Device to settle ferromagnetic particles from suspension

FIELD: process engineering.

SUBSTANCE: invention relates to device intended for settling ferromagnetic particles from suspension. Proposed device comprises reactor 2 with, at least, one magnet 3, 4 arranged outside the reactor, suspension flow flowing there through. Reactor 2 has inner chamber 7 and ambient space 8 there around. Note here that said ambient space 7 and inner space 8 are separated by web 6 provided with, at least, one holes 9, 10 arranged nearby said magnet 3, 4.

EFFECT: higher efficiency.

8 cl, 1 dwg

 

The invention relates to a device for the deposition of ferromagnetic particles from a suspension containing permeable to the flow of slurry reactor by at least one located on the outside of the reactor by a magnet.

To obtain ferromagnetic components, which are contained in the ores, the ore is crushed into powder and the resulting powder is mixed with water. To this suspension is affected by the magnetic field created using one or more magnets so that the magnetic particles are attracted to each other due to what they are deposited from suspension.

From DE 27 11 16 AND a device for separation of ferromagnetic particles from a suspension, which is used consisting of iron rods drum. Iron rods during rotation of the drum alternately magnetizers, so that the ferromagnetic particles cling to the iron rod, while the other components of the suspension fall down between the iron bars.

In DE 26 51 137 A1 describes a device for separating magnetic particles from ore material, in which the slurry is sent through a pipe, which is surrounded by a magnetic coil. Ferromagnetic particles are gathered on the edge of the pipe, the other particles are discharged through a Central pipe, which is located inside the pipe.

In US 4 921 597 In the description of the magnetic separator. Magnetic Sep who has combined the drum, which has plenty of magnets. The drum rotates opposite to the direction of flow of the suspension, so that the ferromagnetic particles stick to the drum and stand out from the suspension.

Method for continuous magnetic separation of suspensions is known from WO 02/07889 A2. They use rotating drum in which is fixed a permanent magnet, with the aim of deposition of ferromagnetic particles from a suspension.

In the known devices for separation of ferromagnetic particles from a suspension applies tubular reactor, through which the suspension flows. On the outer wall of the reactor are one or more magnets that attract contained in suspensions of ferromagnetic particles. Under the influence generated by the magnets of the magnetic field of the ferromagnetic particles are moved to the wall of the reactor and are located on the outside of the reactor by a magnet. Although this allows effective separation, however, the deposition method can be performed only intermittently, because after deposition of a certain amount of ferromagnetic particles it is necessary to open the reactor and removing ferromagnetic particles. Only then can re-submit a new suspension in the deposition process.

The basis of the invention is a device for the deposition of the ferromagnetic particles from suspense and, in which the deposition method can be performed continuously and efficiently.

For solving the problem is provided by the device specified at the beginning of the form in which the reactor has an internal space and the surrounding outer space, while the outer space and inner space separated from each other by an insert, and the insert has at least one hole near the at least one magnet.

The device according to the invention has the advantage that it can operate continuously. The suspension flows through the inner space contained in the suspension of ferromagnetic particles fall under the influence created by using at least one magnet of the magnetic field and are attracted to them. Ferromagnetic particles are at least one hole in the outer space and deposited in outer space, preferably on the inner wall of the reactor. Separated thus from flowing through the inner space of the suspension of ferromagnetic particles can then be relatively easy to separate.

Especially it is preferable that the inner space of the device according to the invention has a circular cross-section, and outer space has an annular cross-section. Accordingly, the insert can be made in the form of t is UBA, outer space is limited by the trumpet-shell.

To improve the efficiency of deposition, the insert can have many located at a distance from each other in the direction of flow holes. When the suspension flows through the inner space, the ferromagnetic particles are gradually deposited from suspension, so that the outer space is constantly increasing concentration of ferromagnetic particles.

In the alternative or additionally may be provided that the insert has lots located at a distance from each other in the circumferential direction of the holes and lots of magnets. Each hole in the box can be aligned with the magnet, so that the ferromagnetic particles are moved in the radial direction from the inner space to outer space.

According to one embodiment of the invention can be provided that at least one magnet is made in the form of an electromagnet, which is preferably configured to turn on and off. When there is a single electromagnet, respectively, the set of electromagnets, they can be controlled to turn on and off. When the electromagnet magnetic field disappears, so adhering to the inner wall of the outer space ferromagnetic who astitsy fond of flow. In this state it is possible to separate the suspension, which is located in outer space, thus achieving the desired separation of ferromagnetic particles from a suspension. Then you can re-enable the electromagnets, so that the ferromagnetic particles are from inner space outer space and stick to the inner wall of the reactor. Motion control of ferromagnetic particles in the device according to the invention can be realized by controlling the power generated by at least one electromagnet of the magnetic field.

In the framework of the invention can also be provided that the diameter of the internal space and the external space and the flow velocity of the suspension are chosen so that almost does not occur cross-flow between the inner space and outer space. This requires that between inner space and outer space did not arise, respectively, there were only a small pressure loss, thereby preventing unwanted cross over, so that only the ferromagnetic particles pass from the inner space to outer space, under the influence of a magnetic field.

According to one embodiment of the invention, may provide for the control of turning on and off the flow in the outer space and/iLive internal space. For separation accumulated in the outer space of the ferromagnetic particles can include the flow in the outer space, while off in the inner space. Conversely, you can enable flow only in the inner space, so that the ferromagnetic particles under the action of the magnetic field is moved in the outer space where there is no current. You can also include the flow in the outer space in some time intervals or intermittently.

Other advantages and details of the invention are explained below based on an exemplary embodiment with reference to the accompanying drawing.

The Figure schematically shows in section of a device according to the invention for the deposition of ferromagnetic particles from a suspension.

The device 1 includes a reactor 2, on the outer side of which are the magnets 3, 4. In this case we are talking about the magnets that can be turned on and off using the control unit 5.

Reactor 2 contains the insert 6, which is shown in the exemplary embodiment has the shape of a tube. The reactor 2 is also made in the form of pipes, respectively, cylindrical. The insert 6 in the reactor 2 separates the inner space 7 inside the insert 6 from outer space 8, which has an annular cross-section and is bounded by an outer wall of the reactor 2.

The insert 6 has a lot of R is spallogenic at a distance from each other of the holes 9, 10, through which the inner space 7 is connected with outer space 8. Hole 9 is located near the magnet 3, the hole 10 is located near the magnet 4. In other embodiments, the execution may have other openings, which are located on the distribution or on the circumference of the insert 6 and/or in the longitudinal direction of the insert 6, i.e. in the direction of flow. Each of these other holes may be aligned with one magnet.

Shown in the Figure, the device provides the possibility of deposition of ferromagnetic particles from a suspension. The inner space 7 of the reactor 2 is filled through a not shown pipe suspension 11 and through it continuously passes a flow of the suspension 11. When the magnets 3, 4 are enabled by the control unit 5, contained in the suspension of ferromagnetic particles under the influence generated by the magnets 3, 4 magnetic field deviates from the flow in the radial direction. Ferromagnetic particles pass through the apertures 9, 10 and fall into outer space 8 of the reactor 2, where they accumulate on the inner wall, as shown in the Figure. Through outer space 8 may also be a flow of the suspension 11, however, it is also possible that the suspension flows only through the internal space 7, so that in the outer space 8 gradually accumulate ferromagnetic the particles. The velocity of flow in the inner space 7 is coordinated with the geometric parameters of the reactor and, in particular, with the size and number of holes 9, 10 so that between the inner space 7 and the outer space 8 there is almost no pressure loss, so that there is no transverse flow through the holes 9, 10, and only the ferromagnetic particles are moved from the inner space 7 in the outer space 8 under the influence of a magnetic field.

When disconnecting the magnets 3, 4 by means of the control unit 5, or manually released adhering to the inner wall of the reactor 2 of the magnetic particles and can be carried away by the stream and deposited. The Department deposited ferromagnetic particles from the rest of the suspension can then be easily realized by using a sieve or the like

You can use the control unit to control generated by the magnets 3, 4 magnetic field. The magnetic field can be controlled so that it turns on and off at certain intervals or intermittently, so that adhering to the inner wall of the reactor 2 ferromagnetic particles can be separated automatically after a certain time. Using the control unit 5 can also be turned on and off flow through the inner space 7 (primary flow), respectively, the flow in the outer space 8 (secondary is th thread), so you can, for example, purposefully rinse outer space 8.

With the help shown in the Figure, the device continuous operation and continuous deposition of ferromagnetic particles, without interrupting the primary stream.

1. Device for the deposition of ferromagnetic particles from a suspension containing permeable to the flow of slurry reactor by at least one located on the outside of the reactor magnet, characterized in that the reactor (2) has an inner space (7) and surrounding outer space (8), outer space (8) and inner space (7) are separated from each other by inserting (6)and insert (6) has at least one opening (9, 10) near at least one magnet (3, 4).

2. The device according to claim 1, characterized in that the inner space (7) has a circular cross-section, and outer space (8) has an annular cross-section.

3. The device according to any one of claims 1 or 2, characterized in that the insert (6) has many located at a distance from each other in the direction of flow holes (9, 10).

4. The device according to claim 1, characterized in that the insert (6) has many located at a distance from each other in the circumferential direction of the holes (9, 10), each of which meets at least one magnet (3, 4).

6. The device according to claim 5, characterized in that you can control the force generated by the electromagnet (3, 4) magnetic field.

7. The device according to claim 1, characterized in that the diameter of the inner space (7) and outer space (8) and the flow rate of the suspension (11) are chosen so that almost does not occur cross-flow between the inner space (7) and outer space (8).

8. The device according to claim 1, characterized in that it comprises a control unit (5) to turn on and off the flow in the outer space (8) and/or in the inner space (7).



 

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