Method for increasing concentration of components recovered from rock slurry by magnetic method and recovering these low-loss components from magnetic separator

FIELD: chemistry.

SUBSTANCE: invention refers to a method for recovering magnetic components from an aqueous dispersion containing magnetic and non-magnetic components. A method for recovering agglomerates from valuable ore and at least one magnetic particle as magnetic components from the water dispersion containing these magnetic components, and the waste ore as the non-magnetic components by the water dispersion through a reactor space, wherein the water dispersion by at least one magnet mounted on an outer side of the reactor space, divided in at least one flow I containing the magnetic components, and at least one flow II containing the non-magnetic components. At least one magnet is flexibly mounted on an outer side of the reactor space, or at least one magnet is rigidly mounted, whereas the generated magnetic field is movable, and the magnetic components in flow I are processed with a wash flow so that flow I is re-distributed by the wash flow, and the non-magnetic components with a portion of the wash flow are delivered back to the water dispersion. The presented method is implemented by means of the reactor comprising the reactor space, at least one magnet mounted on the outer side of the reactor space, at least one feed line and at least one vent line for flow I, at least one vent line for flow II and at least one device for processing flow I with the wash flow.

EFFECT: more effective recovery of the magnetic components.

6 cl, 5 dwg, 2 ex

The present invention relates to a method for separating magnetic components from an aqueous dispersion containing these magnetic components and non-magnetic components, by carrying out an aqueous dispersion through a reactor space in which the aqueous dispersion with at least one magnet placed on the outside of the reactor space, separated by at least one thread I containing magnetic components and at least one stream II, containing non-magnetic components and magnetic components in the stream I is treated with the flushing flow; reactor comprising a reactor space, at least one placed on the outside of the reactor space of the magnet, at least one inlet pipe, at least one outlet conduit for flow I and at least one outlet conduit for the flow II, and at least one device for handling thread I wash flow and also the use of this reactor in the method according to the invention.

In particular, the present invention relates to a method or reactor for the separation of naturally occurring ores to obtain the rich ore with the highest possible purity. Specialist it is known that naturally occurring ore can be subjected to processing, which to them, when n�need after grinding, add magnetic particles, so that in effect the surface properties of the valuable ore (rich) and magnetic particles formed agglomerates of valuable ore and magnetic particles, which unlike the remaining waste rock magnetic, and the magnetic field can separate them.

Methods for isolating such magnetic components from a mixture, in particular from an aqueous dispersion containing these magnetic components and non-magnetic components, the specialist is already known.

According to the prior art, for example, the system can be subject to separation of the aqueous suspension near a rotating magnetic drum. The force of magnetic attraction between the magnetic drum and magnetic components these components are held on the drum, and due to the rotational movement to be separated from the separation of the aqueous dispersion. Non-magnetic components is not fixed by the drum effect of the missing force of gravity, so they remain in dispersion. Magnetic components can be removed from the magnetic drum, using, for example, mechanical pullers, separating magnetic components from the drum. With today's technology it is also possible to control the magnetic action on a rotating drum, so that, for example, after the magnetic components are removed by the rotating drum of the variance, the magnetic field can �tclocal, magnetic components will lose adhesion to the drum, and they can pick up. With today's technology due to the separation of the dispersion can be performed by unidirectional flow with rotation of the drum. At our current level of technology also known methods in which the flow of the aqueous dispersion is carried out in counter-current to the direction of rotation of the drum.

In General, the methods known at present levels of technology, different the drawback that can achieve only insufficient separation efficiency, as in adhering to magnetic drum magnetic agglomerates enabled and non-magnetic gangue. It, therefore, is also isolated from the dispersion. After separation of magnetic agglomerates non-magnetic components remain in the concentrate and in the post-processing of ore concentrates, for example, metallurgical repartition lead to negative values of the space-time yield and thus to increased costs for the entire process. With today's technology, the application of a rotating magnetic roller is not possible to effectively reduce the share of non-magnetic components.

Thus, the present invention is to provide a method of separating magnetic constituents from an aqueous dispersion containing these magnetic components and non-magnetic components, which� differs what magnetic components containing, for example, desirable valuable ore is allocated, for example due to deposits on the magnetic components, the minimum proportion of non-magnetic components, so as to increase the efficiency of the method.

Another challenge is to minimize the proportion of involuntarily separated non-magnetic components, so that during further processing of the magnetic components, particularly valuable ores, to obtain a high performance space-time yield. In addition, advantageously, the separated fraction was present, if possible, a small fraction of non-magnetic components, because especially in the allocation of naturally occurring ores of non-magnetic components contain essentially oxide compounds during the processing of valuable ore metallurgical repartition pass into the slag and adversely affect the metallurgical process (melting). Thus, the present invention is also to provide a method for isolating a naturally occurring ore that provides education in the subsequent process of smelting (metallurgical) small amount of slag.

According to the invention these problems are solved using the method of separating magnetic constituents from an aqueous dispersion containing these magnetic components and non-magnetic components through the aqueous dispersion through a reactor space in which the aqueous dispersion with at least one magnet placed on the outside of the reactor space, separated by at least one thread I containing magnetic components and at least one stream II, containing non-magnetic components, characterized in that the magnetic components in the stream I is treated with a flushing stream.

In addition, according to the invention these problems are solved by a reactor comprising a reactor space, at least one fixed on the outer side of the reactor space of the magnet, at least one inlet pipe, at least one outlet conduit for the flow I, at least one outlet conduit for the flow II and at least one device for handling thread I flush the stream and through the use of this reactor in the method according to the invention.

Below is a detailed explanation of the method according to the invention.

The method according to the invention serves for the separation of magnetic constituents from an aqueous dispersion containing these magnetic components and non-magnetic components.

According to the invention by using method you can do to separate all of the magnetic components from non-magnetic components of�will pull your boots off in the water dispersion.

In a preferred form of execution of the method according to the invention is used to split water dispersion, which is obtained by processing naturally occurring ores.

In a preferred form of execution of the method according to the invention to be separation of the aqueous dispersion comes from the following method for allocating at least one first substance from a mixture comprising this at least one first substance and at least one second substance, and at least two substances are separated from each other, processing the mixture in an aqueous dispersion of at least one magnetic particle, at least one first substance and at least one magnetic particle is joined [to each other] and thus form the magnetic components of the aqueous dispersion, and at least one second substance and at least one magnetic particle are not connected, so at least one second substance preferably forms a non-magnetic components of the aqueous dispersion.

Overlay (connection) at least one first substance and at least one magnetic particle [each other] for the formation of magnetic components is due to the attractive interaction between the particles.

According to the invention may, for example, that shown� the particles were agglomerated, since the surface of the at least one first substance itself is hydrophobic, or, if necessary, hydrophobizing processing at least one surface-active substance. Since the magnetic component of the surface either by itself hydrophobic, or, if necessary hydrophobizing additionally, the deposition of these particles due to hydrophobic interactions. Since the surface of the at least one second hydrophilic substances, the magnetic particles and at least one second substance is not joined to each other. The method of forming these magnetic agglomerates described for example in international application WO 2009/030669 A1. On this publication, a reference is given explicitly in application to all the details of this method.

"Hydrophobic" in the present invention means that the corresponding particle can then be gidrofobizirovan by processing at least one surface-active substance. It is also possible that particle, hydrophobic by itself, additionally gidrofobizirovan by processing at least one surface-active substance.

"Hydrophobic" in the present invention means that the contact angle of water in air at the surface of the corresponding hydrophobic prophetic�STV" or "gidrofobizirovannogo substances" > 90°. "Hydrophilic" in the context of the present invention means that the contact angle of water in air at the surface of the corresponding "hydrophobic substance" <90°.

The formation of magnetic agglomerates, i.e., magnetic components, which can be separated by means of the method according to the invention, can also occur due to other magnetic interactions, for example, due to the dependent on pH, the Zeta potential of the respective surfaces, see, e.g., published international applications WO 2009/010422 and WO 2009/065802.

In a preferred form of execution of the method according to the invention at least one first substance which forms a magnetic particle magnetic components represents at least one hydrophobic metal compound or coal and the at least one second substance forming the non-magnetic components, preferably represents at least one hydrophilic metal compound.

At least one first substance is particularly preferably is a compound of a metal selected from the group of sulfide ores, oxide and/or containing carbonate ores, for example azurite [Cu₃(CO₃)₂(OH)₂] or malachite [Cu₂(OH)₂|(CO₃]]), or noble metals, which can be selectively deposited surface-asset�OE connection with the formation of the hydrophobic properties of the surface.

At least one second substance is particularly preferably is a compound selected from the group comprising an oxide and a hydroxide compound, such as silicon dioxide SiO₂, silicates, aluminosilicates, for example feldspars, for example albite Na(Si₃Al)O₈, mica, for example Muscovite KAl₂[(OH, F)₂AlSi₃O₁₀], garnets (Mg, Ca, Fe^II)₃(Al, Fe^III)₂(SiO₄)₃Al₂O₃, FeO(OH), FeCO₃and other related minerals and mixtures thereof. This is at least one hydrophilic compound of the metal itself remagnino and also becomes magnetic due to the annexation of at least one magnetic particle. Thus, at least one hydrophilic metal compound in a preferred form of execution forms a non-magnetic components of variance to be split.

Examples of applicable according to the invention is sulfide ore selected, for example, from the group of copper ores, which form covellite CuS, chalcopyrite (copper pyrites) CuFeS₂, bornite Cu₅FeS₄chalcocite (copper glitter) Cu₂S and mixtures thereof, and other sulfides, such as molybdenum sulfide (IV) and pentlandite (NiFeS₂)

Suitable oxidic metal compounds which can be used according to the invention, preferably selected from the group, Kotor�u to form a silicon dioxide SiO ₂, silicates, aluminosilicates, for example feldspars, for example albite Na(Si₃Al)O₈, mica, for example Muscovite KAl₂[(OH, F)₂AlSi₃O₁₀], garnets (Mg, Ca, Fe^II)₃(Al, Fe^III)₂(SiO₄)₃and other related minerals and mixtures thereof.

Accordingly, when implementing the method according to the invention is preferably used a mixture of ores produced from ore deposits and are treated with corresponding magnetic particles.

In a preferred form of execution of the method according to the invention a mixture containing at least one first substance and at least one second substance provided in step (A) in the form of particles ranging in size from 100 nm to 200 microns, e.g., see U.S. patent US 5051199. Preferably apply a mixture of ores are characterized by a content of sulfide minerals at least 0.01 wt.%, preferably at least 0.5 wt.%, and particularly preferably at least 3 wt.%.

Examples of applicable according to the invention of sulfide minerals present in applicable according to the invention mixtures is above. Additionally, the mixtures may be present, and the sulfides of other metals than copper, such as iron sulfides, lead, zinc or molybdenum, i.e., FeS/FeS₂, PbS, ZnS or MOS₂. In addition, be processed according� to the invention mixtures of ores may be present oxidic compounds of metals and semimetals, for example silicates or borates or other salts of metals and semimetals, for example phosphates, sulfates or oxides/hydroxides/carbonates and other salts, for example azurite [Cu₃(CO₃)₂(OH)₂], malachite [Cu₂(OH₂)₂(CO₃)]], barite (BaSO₄), monazite ((La-Lu)PO₄). Further examples of the at least one first substance, which is separated by means of the method according to the invention, the noble metals such as Au, Pt, Pd, Rh, which may be in the form of native metal, alloy or the associated view.

For forming a magnetic component aqueous dispersion to be treated according to the invention, created a contact at least one first substance from the above-mentioned group with at least one magnetic particle so that by bonding or sintering to obtain magnetic components. In the General case, the magnetic components may contain all known specialist magnetic particles.

In a preferred form of execution of the at least one magnetic particle is selected from the group consisting of magnetic metals, for example iron, cobalt, Nickel, and mixtures thereof, ferromagnetic alloys of magnetic metals, for example NdFeB, SmCo and mixtures thereof, for example magnetite, maghemite, cubic ferrites of the General formula (I)

where

M is selected from Co, Ni, Mn, Zn and mixtures thereof, and

x≤1,

hexagonal ferrites, such as barium ferrite or strontium MF₆O₁₉where M=Ca, Sr, Ba, and mixtures thereof. The magnetic particles may further have an outer layer, for example, of SiO₂.

In a particularly preferred form of execution of the present application, at least one magnetic particle is a magnetite or cobalt ferrite$$\text{C}{o}_{\text{x}}^{\text{2}+}{\text{Fe}}_{\text{1-x}}^{\text{2}+}{\text{Fe}}_{\text{2}}^{\text{3}+}+O_{\text{4}}$$where x≤1.

In a preferred form of execution of the magnetic particles used in the magnetic�tion components, have a size of from 100 nm to 200 μm, particularly preferably from 1 to 50 microns.

To be treated according to the invention aqueous dispersion of magnetic components, i.e. preferably the agglomerates of magnetic particles and valuable ores are in General in a quantity that allows to transport or move an aqueous dispersion with a known specialist methods and devices. Preferably, the aqueous dispersion to be treated according to the invention contain 0.01 to 10 wt.%, particularly preferably 0.2 to 2 wt.%, very preferably 0.5 to 1 wt.%, magnetic components, in each case on the entire aqueous dispersion.

To be treated according to the invention aqueous dispersion of non-magnetic components are in General in a quantity that allows to transport or move an aqueous dispersion with a known specialist methods and devices. Preferably, the aqueous dispersion to be treated according to the invention contains 5-50 wt.%, particularly preferably 10-45 wt.%, extremely preferably 20-40 wt.% non-magnetic components, in each case on the entire aqueous dispersion.

According to the invention the aqueous dispersion is treated, i.e. the dispersion medium is essentially water, for example, 50-95 wt.%, preferably 55-90 wt.%, in each case, about�with respect to the entire aqueous dispersion.

The method, however, can be applied to non-aqueous dispersions or mixtures of solvents with water.

Thus, further addition of water or instead may include other dispersion medium, for example alcohols, such as methanol, ethanol, propanol, for example n-propanol or isopropanol, butanols, for example n-butanol, Isobutanol or tert-butanol, and other organic solvents, such as ketones, for example acetone, ethers, such as dimethyl ether, methyl tert-butyl ether, mixtures of aromatic compounds, such as gasoline or diesel fuel or a mixture of two or more of the mentioned solvents. The number present in addition to water dispersive environments of up to 95 wt.%, preferably up to 80 wt.%, in each case relative to the total variance.

Quantitative data of the individual components present in the aqueous dispersion to be treated according to the invention, in each case, are summarized together with getting 100 wt.%.

In a highly preferred form of execution by means of the method according to the invention treated with an aqueous dispersion, which in addition to water contains no other dispersive media.

Therefore, it is preferably, by applying the method according to the invention treated with an aqueous dispersion, which as the magnetic component contains 0.2-4�S.%, preferably 0.4 to 2 wt.%, particularly preferably 0.5 to 1 wt.% the magnetite particles as non-magnetic components from 0.2 to 4 wt.%, preferably 0.4 to 2 wt.%, particularly preferably 0.5 to 1 wt.% particles of the above-mentioned sulfides, and the remaining part (relative to 100 wt.%) is water.

The method according to the invention includes an aqueous dispersion reactor through the space. According to the invention it is possible to perform the reaction space in an arbitrary manner, to the extent provided extensive enough contact to be separation of the aqueous dispersion to the outside of the reactor space by at least one magnet or created it by at least one magnet's magnetic field. In a preferred form of execution of the present invention, the reactor space use of the reactor space in the form of a pipe. In a particularly preferred form of execution as the reactor space is used an annular reactor. Due to the preferred use of the annular space as the reactor space when scaling (scale increase) of the method according to the invention is able to negotiate the maximum allowable path for magnetic separation (which is identical to the width of the slit colcemid�CSO space) with the available magnetic forces. As reactors tubular shape, and the reactor annular shape known to the skilled worker and described, for example, in textbooks on chemical engineering as tubular reactors or loop reactors.

In principle, the reaction space according to the invention can be positioned in any direction that seems appropriate specialist and which allows a sufficiently high intensity separation when implementing the method according to the invention. For example, the reactor can be installed horizontally or vertically or at any angle between horizontal and vertical. In a preferred form of execution of the reactor space is vertical. Due to the separation of the aqueous dispersion is allowed to flow through the reaction space according to the invention in any possible direction. In a vertically arranged reactor is preferred if the subject of the separation of the aqueous dispersion flows through the reactor space from the top down, so that the aqueous dispersion of a natural force of attraction, and there is no need to apply any additional devices, such as pumps.

In the General case, separate streams of the method according to the invention can also be moved to a known specialist devices, such as pumps.

According�but the invention of the flow of water dispersion through the reactor space in the General case is the current velocity, which allows a sufficiently high intensity separation when implementing the method according to the invention. The rate of flow to be treated an aqueous suspension in the reactor space is from 0.01 to 5 m/s, preferably from 0.05 to 2 m/s, particularly preferably from 0.1 to 1 m/s.

In a preferred form of execution of the magnet is located on the outer side of the reactor space is movable. This preferred form of execution intended to move the magnet along the reactor space, so as to separate the magnetic components from non-magnetic components. Due to the fact that the magnet moves, the magnetic components that attracts a magnet, are also moving in the corresponding direction (stream I). Non-magnetic components, however, do not move, and a water dispersion washes them away, moving further (stream II).

In another preferred form of execution of the magnet is present on the outer side of the reactor space, not placed movably, and the created magnetic field is movable. In this preferred form of execution is not moving the entire magnet, and thanks to a well-known expert electronic control system moves the magnetic field inside the magnet. This also leads to the release of magnetic components in stream I, and non-magnetic components, by contrast, remain in the pot�ke II.

The method according to the invention can be implemented so that at least one magnet or magnetic field created due to the separation of the aqueous dispersion, stream I and stream II are moved in the same direction. In this form of execution, the reactor is operated in the mode unidirectional flow.

In another preferred form of execution of the method according to the invention at least one magnet or magnetic field generated moves in the opposite direction due to the separation of the aqueous dispersion; stream I and stream II move in opposite directions. In this preferred form of execution of the method according to the invention implemented in a countercurrent mode.

In the operation of the counter according to the invention it is necessary to pay attention to the fact that already in the ow to be treated dispersion occurred the separation of magnetic components by at least one magnet, which moves the separated magnetic components, preferably in the form of a compact mass against the direction of flow be treated dispersion. In this case, the possible blockage at the site. In this form of execution of the method according to the invention the rate of flow due to the separation of the aqueous dispersion preferably ≥400 mm/s, particularly n�edocfile ≥1000 mm/s. These high flow velocities ensure that when implementing the method according to the invention, especially in a countercurrent mode, there is no congestion.

On the outer side of the reactor space is placed at least one magnet. Used according to the invention, the magnets can represent all known to those skilled magnets, for example permanent magnets, electromagnets, and combinations thereof. In a preferred form of execution of the at least one magnet placed on the outside of the reactor space in the place where the inside of the reactor space is provided the opportunity to let the flow I and flow II in at least two different outlet conduit. Due to this guaranteed that the magnetic field affects be treated aqueous dispersion in the location in which the spatial division between stream I and stream II.

Division of reactor space according to the invention at least two of the discharge line for the stream I or stream II can be done by means known to those skilled, for example, formed by appropriately deflecting plates, funnels or branches of a pipe.

The method according to the invention is characterized in that the magnetic components in the stream I is treated with a flushing stream. In predpochtitel�Noah form of performance magnetic components, present in dispersion, at least partially, preferably completely, i.e. at least 60 wt.%, preferably at least 90 wt.%, particularly preferably at least 99 wt.%, due to the magnetic field gather on the side of the reactor space, facing the at least one magnet. Because of this, preferred according to the invention, the accumulation of magnetic components outside of the reactor space, there is a compact mass containing dispersive environment, the mass of the magnet moves in one direction. This mass, however, and included therein a non-magnetic components that, if they remain in it, leading to the aforementioned shortcomings of productivity and cost. Due to the arrangement of the magnetic components in the stream I, in particular, those at the outer wall of the reactor compact mass of the magnetic component, the purge flow according to the invention the mass is at least partially locally redistribute. Due to this preferably released the prisoners in it non-magnetic components. The flushing flow preferably takes the released non-magnetic components and magnetic components, in contrast, are moved under the influence of the existing magnetic field (flux (I).

Under promisec�th stream according to the invention the mean flow, which contains no magnetic components, no non-magnetic components. In a particularly preferred form of execution of the flushing stream is water. He, however, can be any of the combinations of water and solvents.

According to the invention the flushing flow can be added to the stream I all well-known specialist methods, for example through nozzles, conventional feed lines, Annularly arranged nozzles, perforated plates and membranes, and combinations thereof.

According to the invention the flushing flow can get to the thread I magnetic components at any angle, which the expert considers appropriate for maximum washing efficiency. In a preferred form of execution of the flushing flow enters the stream I at any angle from 60 to 120°, preferably from 80 to 100°, particularly preferably at a right angle.

The advantage of this preferred angle is that the obtained maximum washing efficiency.

When implementing the method according to the invention the magnetic components of the dispersion to be treated, you can handle the flushing flow from any direction or from either side of the reactor space, which is submitted to the appropriate specialist. Perhaps, for example, to enter the flushing flow near the side �accornero space which are also drawn by the magnet of the magnetic components, preferably in the form of the contact mass. In this form of execution may particularly intensive mixing of the compact mass of the magnetic component. According to the invention it is also possible to introduce the flushing flow near the reactor space, the opposite side, which are drawn by the magnet of the magnetic components, preferably in the form of a compact mass.

According to the invention be processed from the aqueous dispersion are moved through the reaction space, preferably by means of the pump P1. The flushing flow, which handles the magnetic components in the stream I, preferably moved by a pump P2. After the implementation of the method according to the invention thus obtained stream I move the pump P3. In a particularly preferred form of execution of the method according to the invention the flushing flow can be split between working in concert with each other with pumps P2 and P3, and volumetric flow P2 is greater than P3 volumetric flow. Due to this achieve return flush non-magnetic components specified volumetric flow in the flow II.

The present invention also relates to a reactor comprising a reactor space, at least one fixed on the outer side react�rnogo space magnet, at least one inlet pipe, at least one outlet conduit for the flow I, at least one outlet conduit for the flow II and at least one device for handling thread I flush the stream.

In a preferred form of execution of the reactor according to the invention at least one magnet is located on the outer side of the reactor space is movable.

In another preferred form of execution of the at least one magnet placed on the outside of the reactor space is stationary and the magnetic field generated movably.

Located on the outer side of the reactor at least one magnet is used to separate magnetic components present in the dispersion, which is treated in the reactor according to the invention, from non-magnetic components are also available in dispersion. Magnetic components form a stream I, which can be treated and is preferably treated with a wash stream in the reactor according to the invention. The reaction space is preferably ring-shaped or shaped tubes of the reactor space. A device for handling thread I wash stream is, for example, a simple inlet in the reactor space or a set of nozzles, such as nozzles located in the reactor� ring, or a combination.

In addition, the reactor according to the invention is accordingly valid signs, already mentioned in relation to method.

The reactor according to the invention are particularly useful for magnetic separation of components from mixtures which additionally contain non-magnetic components.

Therefore, the present invention concerns also the use of the reactor according to the invention when implementing the method according to the invention. On this application are true with respect to a method and reactor according to the invention.

Figures

A more detailed description of the method according to the invention and the reactor according to the invention is given by the following figures 1-5, and on these figures present preferred form of execution.

The conventions used in the figures have the following meanings:

1 processed by the water dispersion of magnetic and non-magnetic components, for example, the slurry of ore;

2 stream I, the flow of the product;

3 the reactor wall;

4 the annular space of the reactor;

5 the flushing flow;

6 the flow of wash, with non-magnetic components are returned to the slurry of ore;

7 magnetic components after treatment;

8 part a flushing flow with magnetic components;

9 waste moderadamente components

Figure 1 shows a schematic design of a magnetic separator, which is characterized in that the ore slurry by a pump P1 is moved through the annular space (4).

The separated magnetic particles or combinations of particles (2) through the proper management of the magnets directed along the wall (3) arranged concentrically in the annular space (4). There is this flow of product (2) is being held separately redistribution through the flushing stream (5), and non-magnetic components with part of the flushing stream (6) is returned to the ore slurry (1). The separation of the flushing stream is carried out through concerted with each other of the pumps P2 and P3, and rightly: "volumetric flow P2 > P3 volumetric flow". At the end of the magnets purified magnetic particles or combinations of particles (7) is removed from the magnetic separator in the form of a purified concentrate with a portion of the flushing stream (8), purposefully withdrawn by pump P3.

Figure 2 shows the equivalent structure of figure 1 in a countercurrent mode. Summarizing the flushing flow should be so separated magnetically layer of a solid substance, a movable magnet along the wall, was exposed to local reorganization, and thus included in non-magnetic components released�ü would ran would flush the stream.

Figure 3 shows a possible allocation, in which the purge stream is fed through the hole in the wall, the opposite wall with a magnet. This arrangement allows you to distribute points summarize the flushing flow over a large area.

Figure 4 shows the location at which the purge stream is passed through a layer of solids at the wall with the magnet and, thus, achieve optimal release of the non-magnetic components.

Figure 5 shows a possible placement for the announcement of the suspension, which thanks to the announcement of the suspension angle provided with large gaps between the magnet and, consequently, low magnetic force. At sufficient velocity, which in this form of execution must be less than 1000 mm/s, can thus avoid possible obstructions.

Examples

Example 1

Example 1 shows the effect of leaching on the content of non-magnetic material in the concentrate.

The experiments were carried out with the ore slurry with a solids content of about 10 wt.% in unidirectional flow. The rate of flow of the suspension is about 10-13 cm/s. the Magnets are moving with the same velocity as the suspension.

In the first experiment worked without flushing the stream. In the concentrate stream (stream I) had about 17 wt.% the solid substance. The share price�nogo substances was increased from 0.36 wt.% to be processed from an aqueous dispersion to 1.6 wt.%. in the stream I (increase the concentration).

In one experiment according to the invention is used the flushing flow. In the concentrate stream (stream I) had about 5 wt.% the solid substance. The share of valuable substances is increased from 0.36 wt.% to 3.9-4.6 wt.%.

The number of the extracted valuable material in both experiments the same.

Example 2

This example illustrates the effect of flow direction.

The experiments were performed in a Miniplant installation. The suspension was pumped through a glass tube with a branch near where by a toothed belt so moved permanent magnets that the magnetic fraction was received in the branch.

The flow in the branch (stream I) pump constant support, he is about 10 vol.% from the flow of slurry.

Experiments were performed on a model of the ore slurry, i.e. a mixture of valuable material and quartz sand with a content of solids of about 25%. The velocity is about 10 cm/s (unidirectional flow or counter-current to the movement of the magnet). The magnets are moving at a speed of approximately 20 cm/s.

When you experiment with work in unidirectional mode in the concentrate stream (stream I) is found in about 60 to 70% of valuable substances. When you experiment with working in a countercurrent mode in the concentrate stream (stream I) is found in about 95 to 99% �enny substances.

1. A method of separating the agglomerates from the valuable ore and at least one magnetic particle as a magnetic constituents from an aqueous dispersion containing these magnetic components and waste rock ore as non-magnetic components, by carrying out an aqueous dispersion through a reactor space in which the aqueous dispersion with at least one magnet placed on the outside of the reactor space, separated by at least one thread I containing magnetic components and at least one stream II, containing non-magnetic components, wherein at least one magnet is located on the outer side of the reactor space is movably or at least one magnet is stationary and the magnetic field created movably and magnetic components in the process flow of I flush the stream so that the stream I is subjected to redistribution by the flushing stream (5) and non-magnetic components with part of the flushing stream (6) is returned to the aqueous dispersion.

2. A method according to claim 1, characterized in that the magnetic components in the stream I moved in the form of separated magnetically layer of a solid substance (7) to the reactor wall (3) facing at least one magnet.

3. A method according to claim 1 or 2, characterized in that at IU�e one magnet or magnetic field, due to the separation of the aqueous dispersion (1), stream I and stream II are moved in the same direction.

4. A method according to claim 1 or 2, characterized in that the at least one magnet or magnetic field moves in the direction opposite to the direction of motion due to the separation of the aqueous dispersion (1), flow I and flow II.

5. A method according to claim 1 or 2, characterized in that the flushing flow (5) enters the stream I at an angle of 60 to 120°.

6. Reactor for carrying out the method according to one of claims.1-5, comprising a reactor space (4) at least one fixed on the outer side of the reactor space of the magnet, at least one inlet pipe and at least one outlet conduit for the flow I, at least one outlet conduit for the flow II and at least one device for handling thread I flush the stream.