Method and floating rig for diamond-carrying kimberlite pipe development

FIELD: mining, particularly open cast kimberlite pipe mining.

SUBSTANCE: method involves mining ore body by hydromining device of floating dredger; supplying diamond-containing pulp to floating dressing plant, recovering diamonds and transporting reject material from pit to preliminarily prepared plate for following utilization thereof. Ore body is developed by hydromining device reciprocation across total ore body area. Diamonds are recovered by serial pump decomposition, sizing, dressing and conditioning. Residual material is utilized by dewatering thereof in centrifuge and stacking for following usage for building material production.

EFFECT: simplified method and rig and decreased power inputs for kimberlite pipe development.

2 cl, 2 dwg

 

The invention relates to the mining industry, namely to open the development of diamondiferous kimberlite pipes. Most successfully the present invention can be used for the development of diamond-bearing kimberlite pipes in the European North of Russia and, in particular, in the Arkhangelsk region.

From the patent of Russia №2258810 known method of kimberlite pipes in difficult hydrogeological conditions of permafrost and install floating airlifting dredge for the development of diamond-bearing kimberlite pipes in difficult hydrogeological conditions of permafrost.

How is that before opening hydrate accumulations aquifers from the bottom of the pit are a well of large diameter to a final depth of mining, constructing inclined shaft, which connects to a given depth with the hole, and then in the career space launch hydrate accumulations of the high pressure brine. On the surface of a pond place airlifting the dredger. At the bottom of the reservoir is lowered bulldozer-loosening universal crown. Loosening pre razuprochneniya brine kimberlites produce a bulldozer spiral benches, starting from a well of large diameter to the end edges of the horizon. And for the best of the destruction of kimberlites spiral moves bulldozer ori is notroot in two opposing directions. Destroyed small fraction of ore by airlift dredger the pulp is transported to the beneficiation plant. A large fraction, which has not passed through the air pump dredger, bulldozer served to the mouth of the well, which under its own weight through the hole, coffered vault gets on skimovie lifts inclined shaft. On the inclined trunk of ore fed to the surface to the warehouse ore. Mining of kimberlite pipes below the bottom of the quarry are under vertical angles maturity bots without production Stripping. In stock ore is zaratrusta ore, and then fined ore is fed to the concentrator.

The disadvantage of this method is that its implementation uses a large number of complex high-energy equipment and that the method is applicable only for the development of permafrost kimberlites in complex hydrogeological conditions.

The system includes a floating dredge with air pump connected to the discharge sloping pipeline beyond career over the orebody kimberlite pipes. The pipeline is associated with a processing plant located on the surface of the earth. Quarry filled hydrate accumulations of the high-pressure brine. To do this, from the bottom of the pre-selected career center kimberlite pipes are well bol the large diameter to the final depth testing. Construct inclined shaft, which is connected with a bore of large diameter at the level of finite depth testing. Well of large diameter and inclined shaft equip skipovymi lifts. Skimovie lifts associated with the stock of ore placed on the ground surface near the concentrator. After execution of the skip hoist in an inclined hole and the Central hole in the pit let hydrate accumulations of the high pressure brine. On the surface of the brine is located above the floating dredger with the airlift suction tip. At the bottom of the reservoir is placed bulldozer-loosening.

The device operates as follows.

Bulldozer-the Ripper produces loosening partially razuprochneniya brine rock kimberlite spiral approaches, starting from the mouth of the well of large diameter to the end edges of the horizon. And for the best of the destruction of kimberlites spiral moves bulldozer oriented in two opposing directions. Then use airlifting dredge carry out the extraction and transportation of the formed fine fraction by slurry pipeline to the concentrator. A larger fraction of the ore, which were not in the airlift, the bulldozer is served to the mouth of the well, in which the ore under its own weight at first, gets to the valve bore, and the ZAT is it loaded into the skip hoist. Skips deliver ore on an inclined shaft to the ore stockpile. In stock proizvoditsa zaratrusta ore crushers. Melatonina ore is fed into the concentrator.

The installation has a complex structure and contains a large number of high-energy equipment. In addition, the installation is applicable only for the development of permafrost kimberlites in complex gidrogeologicheskikh conditions.

The closest analogue of the claimed inventions are the way of the development of diamond-bearing kimberlite pipes and floating installation, described in the patent of Russia №2081321.

Method development is as follows.

In the preparatory period outside of the outline of the ore body along the perimeter to create a cutoff barrier, insulating aquifers in the overlying sedimentary rocks and partially in the host rocks. Then make the opening of the ore body open mining quarry or suction apparatus. The excavated soil from the trench above the ore body is moved and placed in a tailings dam tailings after Stripping in a pit filled with water to the level of the natural ground water level, lower suction shell and floating concentrator equipped hydroporinae units. Direct develo the weave kimberlite pipes deep-sea dredging is carried out in the following sequence. Pre-ore body in plan and section mark in the form of a tube on a vertical concentric blocks. Allocate Central ore, which extends vertically down to the design depth of the mine, and the peripheral units with the development of the zone of contact with the host rocks. Concentric elongated ellipsoid contour lines periferiinyh vertical blocks correspond to the shape of the tube in the plan. The excavation of the ore body is carried out by sequential testing concentric blocks from top to bottom with a gradual lowering of excavation in the form of a funnel from the Central ore pillars to the sides and forming in the contact zone of the safety pillar of the massive rocks of the ore formation. Dredge and concentrator equipped hydroporinae units, consisting of giant shells and airlifting units. Hydroporinae units is placed over the face, down the column to the bottom, served in hydroporinae aggregates working agents (high-pressure water and compressed air) and proceed to the hydraulic breaking, loosening, disintegration and erosion of ore high-pressure jets acting downward and lateral directions. Repulsed ore body is continuously pumped by air lift in the receiving device of the dredger and concentrator. From dredger Hydra is a mixture of flexible floating pipeline serves on the concentrator. Giant shells and airlifting columns, merged into hydroporinae aggregates dredger and concentrator have technical grid that provides the linkage of the adjacent jetting faces. Technological equipment concentrator set to experience layout almatycnnkhaleej drag, developing alluvial deposits. Final tailings beneficiation plant for flexible floating pipeline serves on the beach and then through the main pipeline is sent to the tailings pond. After settling of the pulp clarified water layer of abstraction serves to pump station water recycling and transfer on suction projectile and processing plant for reuse. To reduce the amount of tailings slurry tailings pre-sent for installation thickening and filtration. The filtrate is returned to the suction projectile and concentrator, and the thickened tailings are placed in the tailings pond, where they accumulate without any subsequent disposal, representing a substantial danger to the environment.

The installation includes a craft, consisting of two modules floating of dredges and floating concentrator. Dredge and a concentrator is equipped with a set hydropobic is x units, consisting of a water jet cutting apparatus and airlifting columns. Technological equipment concentrator set to experience layout almatycnnkhaleej drag, developing alluvial deposits. Dredge associated floating slurry pipeline from a floating processing plant. Final tailings away from the floating concentrator on floating pipeline associated with onshore pipelines, culminating in a pre-prepared TMF limited bulk dams. Before tailing dump at the end of the trunk pipeline is hosted installation thickening and filtration of the pulp. Near the tailings placed in the water intake and pump station recycled water supply associated with the dredge and processing plant pipelines recycled water supply.

Before developing diamond deposits along its outline perform a cutoff barrier, which is constructed by drilling and filling them with cement slurry. Construction of the tailings carried out by excavation above the ore body and the construction of dams around tailings outside of the ore body. The ore body of the Kimberley mark on concentric blocks. In a water-filled pit place of floating samsara and floating concentrator.

Floating installation for the development of diamond-bearing kimberlite pipes works as follows. The excavation of the ore body is carried out by sequential testing of the previously marked vertical blocks kimberlite pipes, starting from the Central unit and carry it downward. In hydroporinae units served working agents (high-pressure water and air) and proceed to the hydraulic breaking, loosening, disintegration and erosion of ore high-pressure jets acting downward and lateral directions. Repulsed ore body is continuously or periodically pumped by air lift in the reception device of the dredger and concentrator. From the dredge slurry on floating pipeline enters the floating concentrator.

Final tailings beneficiation plant floating on the slurry pipeline act in terrestrial trunk pipeline through which the liquid tailings are sent to the tailings pond. Before entering the tailings go to install thickening and filtration. The clarified water being sucked into the water intake station and the circulating water is returned via pipelines water recycling on the dredge and floating processing plant, and the condensed liquid tailings accumulated in the tailings pond.

The basis for this is the way of the development of diamond-bearing kimberlite pipes and floating plants for the development of diamond-bearing kimberlite pipes was tasked, to the operation of the method was carried out in such a manner and in a floating installing hydroponicly aggregate dredger and a processing plant would be designed in such a manner that a simplification of the method and the installation in General and the reduction of energy consumption on the development of the Kimberley, thanks to what was achieved would reduce the cost of production of diamonds.

This object is achieved in that in the method development diamondiferous kimberlite pipes, including the development of the ore body hydroponicum unit floating dredger, filing diamond slurry on a floating processing plant, the extraction of diamonds and transportation tails beyond career on a prepared site for recycling, what's new is that the development of the ore body is carried out by consecutive reciprocating movement hydroporinae unit floating dredge over the entire area of the ore body, the extraction of diamonds at the processing plant is carried out by sequentially performed operations disintegration of the pulp, the classification of particles on the screens, abrasion particles in the planetary mill, separation of particles by size in megarectum the noise and the extraction of diamonds on rudersberg tables and rentgenolyuminestsentnye separators, and disposal of tailings ASU is estlat by dehydration by centrifugation and storage for subsequent use in the production of construction materials.

The task is achieved by the fact that in the floating installation is to develop diamondiferous kimberlite pipes containing suction projectile with hydroponicum unit associated floating slurry pipeline placed on the pontoon processing plant, associated floating slurry pipeline from the onshore main slurry pipeline, what's new is that floating installation contains one hydroporinae unit suction type concentrator contains a number of centrifugal disintegrator, screens, at least one planetary mill, rudersberg tables and x-ray separators.

Due to such operations of way, and such execution hydroporinae unit and concentrator achieved simplification of fashion and design in General, reduced power consumption on the development of kimberlite pipes, which leads to reduction in cost of production of diamonds.

Below the essence of the proposed method the development of diamondiferous kimberlite pipes and floating plants for the development of diamond-bearing kimberlite pipes is explained in more detail detailed example with reference to the accompanying drawings, on which:

figure 1 shows the scheme of processing of kimberlite ore using the proposed floating mouth is ovci;

figure 2 shows the block diagram of the concentrator.

The inventive method and installation for its implementation is implemented as follows.

As shown in figure 1, revealed quarry flooded by groundwater. In the waters of the quarry there is a craft consisting of two modules - floating suction dredger 1 and the floating concentrator 2. Dredge 1 has hydroponicly unit 3 is lowered to the bottom on the frame 4. Given the low strength of kimberlite ore tubes, for the development of which the unit may be used, hydroponicly unit 3 has a Central porogressive discharge pipe and covering his pulpotomy pipe 5, which dredger 1 is associated with the processing plant 2. When designing a floating installing more durable kimberlite ore hydroponicly unit 3 can be made in the form of airlifting hydroporinae unit, similar hydroponicum aggregates used in the nearest equivalent. If necessary, the floating installation can be performed in a single floating block that hosts the dredger 1 and a concentrator 2.

The development of kimberlite pipes is carried out by consecutive reciprocating movement hydroporinae unit 3 dredger 1 (figure 1) over the entire area of the host kimberlite Tr is the KJV. Soft ore kimberlite pipes (the ratio of strength Protodyakonov - no more than 1.6) with a high content of clay fraction easily eroded hydroponicum unit 3 dredger 1 and pulpotomy pipe 5 is supplied to the floating concentrator 2.

Concentrator 2 (figure 2) comprises a centrifugal disintegrator 6 and odniesieniu rumble 7, forming a block of disintegration. Oversize space screen 7 is connected with the second centrifugal disintegrator 8, which is connected odniesieniu thunder 9, forming a second disintegrating unit. Oversize space thunder 9 is connected with the planetary mill 10 deep abrasion. Planetary mill 10 is connected with mnogorazemny roar 11. Oversize space rumble 11 depending on the size they separate fractions associated with rudersberg tables 12 and rentgenolyuminestsentnye separators 13. Planetary mill 10, mnohohrishny rumble 11, rudersberg tables 12 and rentgenolyuminestsentnye separators 13 form a block enrichment and refinement. Fine fraction (particle size of 1.6 mm or less), separated on all screens, form tails released from the concentrator on floating pipeline 14 (figure 1).

Floating pipeline 14 is associated with the coastal trunk pipeline 15. Coastal trunk PU is improved 15 associated with dewatering centrifuge 16. Dehydrated tails with an approximate moisture content of 15-20% by Elevator 17 received in stock tails, from where they subsequently collected for use in the production of construction materials. The filtrate from the dewatering centrifuge 16 is returned back into the quarry. Part of the moisture remaining in the tails after zentrifugenbau, further away from them due to drainage through the drainage channels 18. If necessary, the number of disintegration blocks and blocks of enrichment and refinement can be more specified above.

Received from the dredge slurry is fed to the first cage 6. Disintegrated them with the mixture comes to dvuhestny rumble 7 where it is separated into two fractions with a particle size of from 1.6 to 50 mm and less than 1.6 mm, oversize space rumble 7 allocated fraction is fed to the second cage 8, where the fraction of re-desintegrated. With the cage 8, the mixture is fed to screens 9, which emits predominantly fraction less than 1.6 mm, and the fraction is larger than 1.6 mm arrives in a planetary mill 10, where there is a deep abrasion of the material at virtually 100% preservation of diamonds. With the planetary mill 10 material goes to managerexecutive rumble 11, where a final separation of the fractions by size. The fraction with a particle size of from 50 to 4 mm comes the t rudersberg tables 12, and the fraction with a particle size of from 4 to 1.6 mm come on rentgenolyuminestsentnye separators 13. Tables 12 and the separator 13 is 100% allocation of all diamonds received from the pulp to the beneficiation plant.

Separated on the screens 7, 9 and 11 of the fraction of particle size less than 1.6 mm, form the tails, which are discharged from the concentrator 2 floating on the slurry pipeline 14 (1) in the coastal pulpotomy the pipeline 15. With a pipeline of 15 tails come in dewatering centrifuge 16, where it is dehydrated to 15-20% moisture content. Dewatered tailings Elevator 17 is fed to the stock tails. The filtrate from the centrifuge 16 is returned back into the quarry. In stock tails is further dewatered by drainage. Eye-catching moisture back through the drainage channels 18 back into the quarry. Thus in the warehouse remain almost dry fraction with particle size less than 1.6 mm, which are retrieved from the warehouse for successful application in the production of building materials. Thus, the use of the claimed floating installation for the development of diamond-bearing kimberlite pipes does not require a cumbersome and dangerous for the environment tailings requiring constant supervision for their safety.

From the specific examples of the proposed ISO is reteni for each specialist in this area there is a clear opportunity to implement them with the task. However it is also clear that in their implementation can be made small changes, which, however, will not exceed the volume of the inventions defined by the following claims.

Method and installation for its implementation simple. Installation is simple in construction and reliable in operation. In the process, and the operation of the unit requires very little energy, which reduces the cost of production of diamonds. Used in the installation of the concentrator contains the minimum number of processing equipment. This ensures 100% extraction of diamonds. When implementing the method, and when using installation is not required dangerous for the environment tailings, and the resulting dry tails can be used in the production of construction materials.

1. Method development diamondiferous kimberlite pipes, including the development of the ore body hydroponicum unit floating dredger, filing diamond slurry on a floating processing plant, the extraction of diamonds and transportation tails beyond career on a prepared site for recycling, characterized in that the development of the ore body is carried out by consecutive reciprocating movement of the Hydra the production unit over the entire area of the ore body, the extraction of diamonds at the processing plant is carried out by sequentially performed operations disintegration of the pulp, the classification of particles on the screens, abrasion particles in the planetary mill, separation of particles by size in megarectum the crash and recovery of diamonds on rudersberg tables and rentgenolyuminestsentnye separators, and disposal of tailings is carried out by dehydration by centrifugation and storage for subsequent use in the production of construction materials.

2. Floating installation for the development of diamond-bearing kimberlite pipes containing suction projectile with hydroponicum unit associated floating slurry pipeline placed on the pontoon processing plant, associated floating slurry pipeline from the onshore main slurry pipeline, characterized in that the floating installation contains one hydroporinae unit suction type concentrator contains a number of centrifugal disintegrator, screens, at least one planetary mill, rudersberg tables and x-ray separators.



 

Same patents:

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2 cl, 1 ex, 1 tbl, 4 dwg

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28 cl, 2 ex

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2 cl, 2 dwg, 2 tbl

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16 cl, 2 dwg, 2 tbl

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EFFECT: the invention ensures the increased efficiency of the desintegration and the decreased losses of the useful ingredient with the nondesintegrated argillous pellets.

2 cl, 1 tbl, 2 ex

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3 dwg

FIELD: mining industry; methods of concentration of the magnetite ores.

SUBSTANCE: the invention is pertaining to the method of concentration of the minerals, in particular, the magnetite ores. The method allows to reduce the share of the ballast (not requiring crushing) material. The method includes the feeding of the pulp-shaped material intended for the wet magnetic separation into the apparatus, where using the gravitational method the pulp-shaped material is separated for two fractions: the light fraction and the heavy fraction. The heavy fraction is sent directly for crushing (uniting it with the magnetic product of separation), or using the magnetic field divide it into the nonmagnetic part and the magnetic part. At that the nonmagnetic part is dumped in the refuse tailings, while the magnetic part is directed to the mill or subjected to the gravitational separation with production of the heavy and light products. The heavy product consisting of the particles of the opened useful mineral is withdrawn avoiding the crushing as the rough iron concentrate. The light product consisting of the accreted particles is routed into the drum-type mill.

EFFECT: the invention allows to reduce the share of the ballast (not requiring crushing) material.

5 cl, 6 dwg

FIELD: processes for separating carbon-containing component of natural coal, coal slime or waste materials of coal concentration, possibly in coal, fuel and metallurgical industry branches for producing high-grade, high-calorie, low ash content coal.

SUBSTANCE: method for concentrating coal comprises steps of mixing initial coal raw material and water for receiving water-coal suspension; adding to said suspension agglomerating agent; separating carbon-containing component of coal raw material and ash in water-coal suspension; extracting carbon-containing component by flotation; in addition introducing frothing agent to water-coal suspension and separating carbon-containing component of coal raw material and ash by means of steam blown-in by separate streams for thinning ash-fraction component. Water-coal suspension includes 7.00 - 50.00 mass parts of water per 1 mass part of coal. Flow rate of steam is no more than 500 kg per ton of initial coal raw material. Flow rate values of agglomerating agent and frothing agent are in range 3 - 7 kg and 0.05 -0.15 kg respectively per 1 t of water-coal suspension.

EFFECT: reduced expenses for realization of method, less loss of yield of carbon-containing component, enhanced efficiency of removing ash from carbon-containing component.

9 cl, 2 tbl, 6 ex

FIELD: automatically controlled operation of concentration mills, in particular, flotation separation of converter matte.

SUBSTANCE: method involves additionally determining content of 20-45 micrometer fractions in wastes of test classifications of first and second grinding stages and maintaining said content within the range of 15-20% and 10-15% by weight of ground mass, respectively, and maintaining content of fraction sized up to 45 μm within the range of 45-50% and 25-35% by weight of ground mass, respectively, with waste density of 2.0-2.2 kg/l and 1.9-2.1 g/l, respectively, by altering water to converter matte ratio during charging of first grinding stage mill and density of wastes of test classifications of first and second grinding stages depending on variations in content of fraction of 20 μm to 45 μm; additionally determining content of 5-45 μm fraction and maintaining said content within the range of 65-75% by weight of ground mass, and maintaining content of fraction sized up to 45 μm within the range of 80-95% by weight of ground mass by varying water to converter matte ratio during charging of first stage grinding mill depending on variations in content of 5-45 μm sized fractions.

EFFECT: reduced slug formation and increased extent of releasing concretions of ground crude material.

3 dwg, 2 tbl, 2 ex

FIELD: concentration of minerals; coal concentrating plants for producing coal concentrate from coal sludge.

SUBSTANCE: proposed method consists in pulping the starting material followed by separating the grain coal part from rock component by hydraulic classification in vertical gravity-type hydraulic classifier where grain part is separated from rock component due to difference in size of grains and density of medium in ascending flow of water carrying the suspended rock part and entrapping the rock component in thickeners. Rock component is entrapped in thickener by means of polyfunctional material used as filtering, coagulating, flocculating, sorbing, draining and water-repellent layers; this material is subjected to regeneration at release of rock part. Water passed through water-repellent layer is returned to hydraulic classifier for washing-off the coal, thus completing the circulating cycle. Concentrated grain coal part obtained in hydraulic classifier is subjected to dehydration in centrifuge for separation of centrifuged effluent in circulating water storage tank and coal concentrate which is mixed with binder in mixer and is directed afterwards for granulation and subsequent drying.

EFFECT: enhanced efficiency of extraction of combustible mass from coal sludge.

1 dwg, 1 ex

FIELD: heat-and-power engineering.

SUBSTANCE: processing consists in separation of glass microspheres from total waste mass by agitating slurry for 10-12 min while maintaining liquid-to-solids ratio between 3:1 and 5:1 followed by settling and removal of microspheres from the slurry surface. Separation of non-burned organic residues is performed after they are reduced to fragments (90% of class 0.044 mm) in flotation process, which is carried out at initial pH 7 and flotation pH 9 employing kerosene in amounts 45-70 kg/t in main flotation and 25-40 kg/t in control flotation. Flotation is followed by step-by-step magnetic separation, first in week magnetic field at 50-150 mTl and then in magnetic fields of gradually increased intensity: from 500 to 1700 mTl with steps of 200 mTl.

EFFECT: increased integrated recovery of all valuable constituents of ash-and-slack waste.

4 cl

FIELD: concentration of minerals.

SUBSTANCE: proposed method includes disintegration of dust at simultaneous preparation of pulp and removal of foreign admixtures; operations are performed in scrubber-washing drum. Then pulp is admitted to pulp line in counter-flow; aeration of pulp is performed in pulp line by means of air bubbles of one size and duration of life no less than 1-2 minutes; proposed method includes also forming standing acoustic waves perpendicularly to pulp flow at frequency ωac corresponding to resonance frequency ω0 of air bubbles of one size 10. Action of centrifugal and acoustic fields on pulp is performed in acoustic chamber at hydrostatic pressure of 4-5 atm. Acoustic field is formed in acoustic chamber by waves of final amplitude at frequency ωac corresponding to resonance frequency ω0of air bubbles of one size 10 by means of acoustic radiators smoothly distributed over surface of acoustic chamber.

EFFECT: enhanced efficiency of entrapping fine gold.

7 dwg

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