WO2006085831A1 - Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof - Google Patents
Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof Download PDFInfo
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- WO2006085831A1 WO2006085831A1 PCT/UA2005/000006 UA2005000006W WO2006085831A1 WO 2006085831 A1 WO2006085831 A1 WO 2006085831A1 UA 2005000006 W UA2005000006 W UA 2005000006W WO 2006085831 A1 WO2006085831 A1 WO 2006085831A1
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- carpet
- riffles
- catching
- pulp
- strake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/68—Washing granular, powdered or lumpy materials; Wet separating by water impulse
- B03B5/70—Washing granular, powdered or lumpy materials; Wet separating by water impulse on tables or strakes
Definitions
- the invention relates to structures of strakes and catching carpets for precipitation from pulp of concentrates of such heavy minerals, in initial granulometric composition of which prevail fine-dispersed and/or lamellar particles.
- These strakes and carpets are intended for search and exploration of natural and man-caused placers of valuable heavy minerals and estimation of their recoverable reserves, and, mainly, for their extraction from the dispersed enclosing strata and/or soils at mining of: natural heavy mineral placers, tails of natural heavy mineral placers that were mined by faulty means, crushed dumps of some mining and/or metallurgical works and/or ashes of thermal power-stations that use hard fuel.
- strake refers to such at least single-section device for precipitation of heavy minerals concentrates, which for adjusting of flow velocity and streamline pulp is equipped with at least one set reciprocal mobile stencils formed as a set of longitudinal undulating riffles and transversal riffles; ((catching carpef refers to such removable ground part of each strake section that accumulates of heavy mineral's concentrate;
- «heavy minerals» refers to any mineral, the density of which exceeds the density of enclosing strata and/or soils usually more than twice and which is such native metal as gold, silver, platinum, any other platinum group metal and, sometimes, lead, arsenic and mercury or their natural compounds; ((fine-dispersed particles of heavy minerals)) refers to such particles of these minerals which have a maximal size in the range from 0,1 to 0,005 mm;
- (lamellar particles of heavy minerals)) refers to such particles of these minerals thickness of which is less than their length and width substantially;
- (enclosing strata) refers to such natural mineral as, for example, quartz, or such artificial mineral- like materials as slags or precipitations that arise, in particular, as by-products of complex (polymetallic) ores processing and contained admixtures of valuable heavy minerals;
- “soils» refers to initially loose accumulations of such mineral particles as, preferably, quartz sands that contain admixtures of valuable heavy minerals;
- black schlicb refers to dispersed particles of enclosing strata that have the density near to the density of valuable heavy minerals, for example: particles of such natural minerals as magnetite and ilmenite, and/or particles of such artificial minerals as tailings of ferrous and leaden shot, hard steel grains, ferrous dross and other wastes that are presented in dumping places of metallurgical works widely;
- pulp refers to any fluid suspension that is prepared artificially and contained liquid (usually water) basis and hard phase as mixture of particles of at least one enclosing strata and/or one soil and at least one valuable heavy mineral;
- Concentrate refers to such (usually damp, but not fluid) intermediate product that is precipitated from pulp and enriched by at least one valuable heavy mineral substantially;
- ⁇ target product' refers to selected from a concentrate practically clean valuable heavy mineral
- «channel» refers to at least partly sinuous space between two neighboring undulating riffles or between any extreme undulating riffles of any mobile stencil and the proper sides of such flow-through gutter that is a basic part of strake.
- any strake and catching carpet must: allow as much as possible enrichment of concentrate with target product, be simple for production and servicing and easily-replaceable, be suitable both for exploration and mining of heavy mineral placers, provide the operating safety and as much as possible mild pollution of the environment and low specific power inputs.
- Pulp based on water obtained concentrates and enrichment's tails as mechanical mixtures of chemically unchanged enclosing strata and/or soils particles and non-separated residues of heavy minerals are inert biologically. Therefore, any gravitation enrichment is practically safety for miners and for natural environment.
- This method decreases productivity of strakes the more so as pulp flow could be interrupted more often. These interruptions may increase cost price of target product so, that its extraction could be unprofitable if even climate allows all-the-year-round mining of placers.
- SU 831180 discloses loosening of "bed” by forced vibrations of stencils riffles. Unfortunately, this method provides loosening the upper layer of lade-down in catching carpets cells clastic material only while subjacent layers remain untouched practically.
- the known strake (Fig.1 and specification of RU 2095147) has: (1) a flow-through gutter at least a bottom of which is produced from non-ferromagnetic material and which, when it operates, is inclined to the horizontal line and connected by upper end to a pulp source and by lower end to a means for dumping tails of enrichment,
- the known strake can be equipped with:
- set of such cinematically linked hard stencils of deep filling each of which comprises of lengthwise undulating riffles (these riffles are located either in first strake section above the catching carpet, or in any other strake section above the respective stencils of shallow filling and connected to proper longitudinal reciprocal motion drive), and/or (6) transversal riffles which are fastened rigidly in the stencil frames and placed between the rows of undulating riffles and between each extreme row of such riffles and respective side of flow-through gutter, and have height that is practically equal to height of undulating riffles.
- a known catching carpet (Fig.2 of RU 2095147) has: upper elastic cellular layer in which each cell is confined by bottom and skirting, substrate elastic layer fastened at least in run-position to the upper layer, and flat permanent magnet elements that are fastened with substrate layer and located at least under some cells of upper layer,
- the invention is based on the problem of creation - by change of form and positional relationship of means intended for interrupting stream pulp and loosening of sediment by vertical pushes - such strake and catching carpet which could decrease carry-over of fine- dispersed and/or lamellar particles of valuable heavy minerals into dump substantially and, thus, increase efficiency of target products extraction and their share in any concentrate.
- each row of said separate rotary plates is suspended on a rod pierced respective said flat insertions at a level no more than the half of their height
- each placed under respective cell of the catching carpet permanent magnetic element is placed under points of intersection of the geometrical axis one of said rods and the symmetry plane one of said flat insertions too.
- the first additional feature consists in that said flat insertions of undulating riffles have recesses in their lower parts, and said transversal riffle plates have also in their lower parts at least such one-sided lateral ledges which are placed within said recesses. It allows to limit turns of transversal riffle parts under pulp stream head and speed of hard particles dumping. This is especially important at each next start of process.
- the second additional feature consists in that the strake is equipped with at least one magnetic separator that is placed above at least one selected stencil and connected to reciprocal motion drive relative to this stencil; the separator comprises of magnets their quantity and plane position correspond to the quantity and plane position of permanent magnetic elements under the catching carpet cells.
- Such separator allows catch the ferromagnetic particles of black schlich at vertical vibrations of pulp temporally. Thus, precipitation of said schlich particles together with target product particles into the catching carpet cells hinders substantially.
- the third additional feature consists in that said magnetic separator comprises of a non- ferromagnetic box and set of flat magnets that are placed on pendants within said box and connected to drive of their synchronous swinging movement relative to the bottom of said box.
- said magnetic separator allows to select the black schlich ferromagnetic particles at moments of local pulp splashes and to give back of theirs into pulp stream at moments of local lowering pulp level most effectively.
- each cell of upper layer is equipped with petalous valve that is located above its bottom, and with poil filaments that are fastened to said bottom between the said valve petals and said cell skirting.
- valves petals in said cells open during each vertical push of such catching carpet caused by solenoids and flat permanent magnetic elements and, respectively, push sediment upwards, causing micro-eddies in a liquid medium.
- dumping of heavy minerals particles decreases and share of target product in concentrates and efficiency of its extraction increase substantially.
- the third additional feature consists in that the petals of each valve are closed in initial position. It hinders to intrusion of sediment into valve sub-petalous space that is especially important in the initial period of concentrate precipitation.
- Fig.1 shows positional relationship (in view from above) of stencils parts and flat permanent magnetic elements under the cells of catching carpet (with partial cutaway on butt ends and from the one flow-through gutter side);
- Fig.2 shows transversal riffle plates pendant on rod (axonometric view);
- Fig.3 shows position of transversal riffle plates in relation to undulating riffles (end-view);
- Fig.4 shows the strake section equipped with a magnetic separator (end-view with cutaway of one flow-through gutter side);
- Fig.5 shows a catching carpet (transverse section);
- Fig.6 shows diagram of rearrangement of enclosing strata and/or soil «easy particles» and heavy minerals particles in horizontal velocities' field in any curvilinear channel part (axonometric view);
- Fig.7 shows diagram of short-time interruption of rearrangement of hard particles having different density in velocities' field near the flat insertions in undulating riffles and transversal riffle plates (view from above).
- the flow-through gutter 1 is a basis of any strake according to the invention (Fig.1). It has lateral sides 2 and bottom 3 produced from non-ferromagnetic material.
- said gutter 1 is inclined to the horizontal line (usually under an angle in the range from 6° to 11°) and connected by its upper end to a pulp source and by its lower end to a means for dumping of enrichment's tails.
- a cellular catching carpet 4 (showed on Fig.1 as intersecting lines) is placed on the bottom 3 of said gutter 1.
- Said carpet 4 is equipped with flat permanent magnetic elements 5 at least under some cells (the contours of these elements 5 are shown conditionally on Fig.1 as little circles).
- a set of cinematically linked hard stencils 6 of shallow filling (designated on the whole on Fig.1 by arrows) must be placed above the carpet 4.
- These stencils 6 are produced from non-ferromagnetic material usually and connected to at least one suitable reciprocal motion drive of theirs along the sides 2 of said gutter 1 and said carpet 4 (this drive is designated conditionally on Fig.1 by pair of oppositely directed arrows).
- Each stencil 6 has: first, at least two rows of undulating riffles that are located along the sides 2 of said gutter 1 at one level above a carpet 4; each such riffle consists of practically identical on a height alternated to bulge direction half-sinusoidal parts 7 shaped as circular semicylinders usually, and flat insertions 8 fastened between each neighbor half-sinusoidal parts 7, and second, at least two sets of plate transversal riffles 9 that are suspended on separate rods 10 with possibility of turn into channels between the rows of undulating riffles 7,8 and extreme rows of such riffles 7,8 and the sides 2 of said gutter 1.
- the rods 10 are skipped through said insertions 8 usually at a level no more than half height of theirs.
- Each magnetic element 5 is placed practically under the point of intersection of the geometrical axis one of a rod 10 and symmetry plane one of a flat insertion 8.
- transversal riffle plates' 9 it is desirable for limitation of the transversal riffle plates' 9 turns, that - lower parts of said plates 9 are equipped with at least one-sided lateral ledges 11 , said flat insertions 8 of undulating riffles are equipped with recesses 12 in lower parts too, and said ledges 11 are placed within said recesses 12 (see Fig.3).
- Each strake according to the invention has the means for excitation of vertical vibrations within pulp stream base on not shown especially suitable pulse alternating current generator and solenoids 13 (Fig.4). Windings of said solenoids 13 are connected to said pulse generator, and upper their ends are placed under those cells of catching carpet 4, which are equipped with flat permanent magnetic elements 5.
- the strake is equipped with at least one magnetic separator for catching of ferromagnetic particles from pulp stream and, thus, decreasing their precipitation into concentrate.
- separator comprises of: impenetrable for pulp non-ferromagnetic box 14 that is placed within said gutter 1 above at least one selected stencil 6 (or, preferable, above all stencils 6) of shallow filling, a is not shown especially and designed by oppositely directed arrows only such suitable reciprocal motion drive of said box 14 relative to said stencil 6 that operates, as a rule, in the antiphase mode with the stencils 6 drive, set of flat magnets 15 that are placed on hinged pendants 16 within said box 14 and connected to (for example, pusher) drive 17 for their synchronous swinging movement relative to the box 14 bottom.
- Quantity and plane position of said magnets 15 correspond to the quantity and plane position of permanent magnetic elements 5 under the catching carpet 4 cells.
- the strake may be used for extraction of valuable heavy minerals and exploration of placers with arbitrary cellular catching carpet 4 that is equipped with said permanent magnetic elements 5 fastened in staggered rows or in other suitable order under at least some carpet 4 cells.
- the catching carpet 4 according to the invention for placers' mining and, especially, for exact estimation of mineable reserves of valuable heavy minerals.
- Such carpet 4 has (see Fig.5): substrate layer 18 produced from elastic material, upper cellular layer 19 that is produced from elastic material also, connected to the substrate layer 18 at least in run-position and equipped with such cells 20 each of which is confined by skirting 21 and bottom 22, above-mentioned magnetic elements 5 are fastened with the substrate layer 18 and located at least under some cells 20 of the upper layer 19.
- petalous valves 23 that are located above the bottom 22 of each cell 20, and poil filaments 24 that are connected to the bottom 22 of each cell 20 and placed between the valves 23 petals and the skirting 21 of said cell 20.
- Linear sizes of the cells 20 and other parts of the catching carpet 4 may be selected by person skilled in art taking into consideration initial granulometric composition of enclosing strata and/or soils contained heavy minerals and heavy mineral as such.
- the sizes of cells 20 (in mm) are following: the width in the range from 5 to 10, the length in the range from 10 to 25, the bottom 22 thickness in the range from 1,5 to 2,0, and the skirting 21 height does not exceed 10.
- the carpet 4 may be produced preferably as entire article. This provides stability of magnetic elements 5 location under cracks in the petalous valves 23 grounds. However, upper cellular layer 19 wears out quickly in comparison with substrate layer 18. Therefore, layers 18 and 19 are produced in practice separately.
- the flow-through gutter 1 arranges in run position at angle in the range of 6° to 11° to the horizontal line.
- the cellular catching carpet 4 places on the bottom 2 of said gutter 1 so those flat elements 5 locate practically exactly under the cells 20, or under cracks in the petalous valves 23 grounds (if carpet 4 according to the invention will be used).
- the solenoids 13 can be connected to the pulse current source with some time lag, but no more later when pulp will be appear on the flow-through gutter 1 exit.
- Curvilinear channel parts between the reciprocal mobile undulating riffles 7,8 and such extreme riffles and the sides 2 of said gutter 1 distort velocities' field of «easy particles» of enclosing strata and/or soils and «heavy particles» of target product and cause rearrangement of those particles within pulp down-stream.
- Reciprocal motion of the stencils 6 promotes described rearrangement of hard particles in channels additionally.
- each flat insertion 8 between the half-sinusoidal parts of each undulating riffles 7 causes short-time interruption of rearrangement of hard particles within the pulp stream flowing along the insertion lateral surfaces, impingement of pulp stream with said plates 9 of the transversal riffles suspended on the rods 10 promotes transference of «heavy particles» into such cells 20 of the catching carpet 4 under which magnetic elements 5 are placed (these areas, that are marked by black color on Fig.7.
- each power-up of the solenoids 13 pushes the permanent magnetic elements 5 vertically.
- the valves 23 petals open slightly and push sediment upwards, causing micro-eddies in the liquid medium.
- These micro-eddies stimulate, first of all, stirring-up of sunken within the cells 20 relatively easy particles of enclosing strata and/or soils that slip through poil filaments 24 and go back into pulp stream usually.
- fine- dispersed and, especially, lamellar heavy minerals particles keep by deflecting poil filaments 24 within the cells 20 when the valves 23 petals move downward.
- Reciprocal motion of the box 14 by the pusher 17 (as a rule, antiphase to the stencils 6 motion) and turns of the flat magnets 15 between positions the «parallel» and «at right angle» to the box 14 bottom provide: «snatching» of ferromagnetic particles from the pulp stream in channels at moments of local pulp splashes when permanent magnetic elements 5 push the cells 20, and back-ejection of these particles into pulp stream in other moments of strake operation (usually with their dumping over transversal riffles 9).
- At least upper cellular layer 19 of said catching carpet 4 extracts from the flow-through gutter 1 , and concentrate evacuates from cells 20 and pack up into not shown here container (for storage and transfer to near work that can extract of target product).
- Strakes and catching carpets according to the invention may be easy producing industrially using the arbitrary machine-building plants and factories for rubber goods production.
- the strakes can be used preferably as output devices of: drags or other devices for hydraulic mining of such both natural and man-caused placers those contain precious metals particles related to preferable shallow granulomere classes (less than 0.15 mm), and traditional schlich-concentrating devices and factories.
- strakes with catching carpets are applicable: for cleaning of industrial wastes containing the fine-dispersed mercury particles, lead, arsenic and other heavy metals, for selection of unprofitable gold and platinum admixtures to such friable build materials as sands (at the time of their hydraulic extraction), for accompanying precious metals extraction (even from such unprofitable until now placers as ground precipitation that recover usually when navigating channels and marine shelves deep), for exploration works and researches studies of soils, residual soils, processes of supergene mineralization and sedimentary deposits.
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Abstract
Strake for heavy minerals concentrates precipitation from pulp has flow-through gutter, cellular catching carpet having permanent magnetic elements at least under some cells, reciprocal mobile hard stencils of shallow filling composed of lengthwise undulating riffles and transversal riffles placed within channels between said undulating riffles and/or gutter sides, and means based on pulse alternating current generator, solenoids and said magnetic elements for vertical vibrations excitation within pulp stream. In this strake, alternated in series to bulge direction half-sinusoidal undulating riffle have flat insertions, the transversal riffles are formed as separate rotary plates placed within said channels on rods pierced respective flat insertions, and said magnetic elements are placed under points of intersection of geometrical axles of said rods and the symmetry plane of said flat insertions. Catching carpet from elastic material has an upper layer in each cell of which between skirting a petalous valve is placed, and to the bottom poil filaments are added, and substrate layer which at least under some cells of upper layer is equipped with flat permanent magnetic elements.
Description
STRAKE FOR HEAVY MINERALS CONCENTRATES PRECIPITATION FROM PULP AND CATCHING CARPET THEREOF
Field of the Invention
The invention relates to structures of strakes and catching carpets for precipitation from pulp of concentrates of such heavy minerals, in initial granulometric composition of which prevail fine-dispersed and/or lamellar particles. These strakes and carpets are intended for search and exploration of natural and man-caused placers of valuable heavy minerals and estimation of their recoverable reserves, and, mainly, for their extraction from the dispersed enclosing strata and/or soils at mining of: natural heavy mineral placers, tails of natural heavy mineral placers that were mined by faulty means, crushed dumps of some mining and/or metallurgical works and/or ashes of thermal power-stations that use hard fuel.
Background Art For the purpose of this description, the following terms as employed herein and in the appended claims refer to the following concepts:
«strake» refers to such at least single-section device for precipitation of heavy minerals concentrates, which for adjusting of flow velocity and streamline pulp is equipped with at least one set reciprocal mobile stencils formed as a set of longitudinal undulating riffles and transversal riffles; ((catching carpef refers to such removable ground part of each strake section that accumulates of heavy mineral's concentrate;
«heavy minerals» refers to any mineral, the density of which exceeds the density of enclosing strata and/or soils usually more than twice and which is such native metal as gold, silver, platinum, any other platinum group metal and, sometimes, lead, arsenic and mercury or their natural compounds; ((fine-dispersed particles of heavy minerals)) refers to such particles of these minerals which have a maximal size in the range from 0,1 to 0,005 mm;
((lamellar particles of heavy minerals)) refers to such particles of these minerals thickness of which is less than their length and width substantially;
((enclosing strata)) refers to such natural mineral as, for example, quartz, or such artificial mineral- like materials as slags or precipitations that arise, in particular, as by-products of complex (polymetallic) ores processing and contained admixtures of valuable heavy minerals;
«soils» refers to initially loose accumulations of such mineral particles as, preferably, quartz sands that contain admixtures of valuable heavy minerals;
((black schlicb) refers to dispersed particles of enclosing strata that have the density near to the density of valuable heavy minerals, for example: particles of such natural minerals as magnetite and ilmenite, and/or
particles of such artificial minerals as tailings of ferrous and leaden shot, hard steel grains, ferrous dross and other wastes that are presented in dumping places of metallurgical works widely;
«pulp» refers to any fluid suspension that is prepared artificially and contained liquid (usually water) basis and hard phase as mixture of particles of at least one enclosing strata and/or one soil and at least one valuable heavy mineral;
«concentrate» refers to such (usually damp, but not fluid) intermediate product that is precipitated from pulp and enriched by at least one valuable heavy mineral substantially;
^target product' refers to selected from a concentrate practically clean valuable heavy mineral;
«channel» refers to at least partly sinuous space between two neighboring undulating riffles or between any extreme undulating riffles of any mobile stencil and the proper sides of such flow-through gutter that is a basic part of strake.
It is generally known that: initial concentration of valuable heavy minerals in enclosing strata and soils is rarely more than 1%, and does not exceed 0,1% on mass for precious native metals in mineral placers usually, and substantial part of any valuable heavy mineral is ingrained into dispersed enclosing strata and/or soils as fine-dispersed and/or lamellar particles quite often.
Therefore any strake and catching carpet must: allow as much as possible enrichment of concentrate with target product, be simple for production and servicing and easily-replaceable, be suitable both for exploration and mining of heavy mineral placers, provide the operating safety and as much as possible mild pollution of the environment and low specific power inputs.
These requirements are compatible with difficulty. Therefore, they are succeeded separately or in some combinations until now.
In fact, it is known still from XIX age («Great encyclopedic dictionary POLYTECHNICS,
Moscow: Scientific Publishing House «Great Russian Encyclopaedia)), 1998, p.25 and p.591 ; in Russian: «Eojibi_uoM 3HL4i/ικπoπefli/mecκnM cπoβapb πOJlMTEXHMHECKMI/I)), MocKBa:
Haym-ioe M3flaτenbcτBθ βEojibiuafl POCCMMCIOH 3Hi4KκπoπeAMH», 1998, c.25 ι/ι c.591), two methods for extraction of precious metals from enclosing strata and soils, namely: amalgamation, that is dissolution of metals (preferably gold or platinum) by mercury, separation of amalgam from the not dissolving residue of enclosing strata and/or soil by filtration and separation of target product from filtrate by mercury evaporation, and cyanide leaching, that is selective dissolution (preferably gold or silver) in weak water solutions of alkaline metals cyanides and then precipitation of target product.
These processes have acceptable specific power inputs and, regardless of form and
sizes of particles, provide practically complete extraction of precious metals from enclosing strata and/or soils. However, protection of personnel and environment from such toxic materials as mercury and cyanides is very difficult and costly. In addition, said methods and means for their realization are useless for exploration of placers. Therefore, amalgamating and cyanide leaching use now usually for industrial extraction of precious metals from electronic devices scrap or from concentrates those are obtained by precipitation from "placer's" pulp.
These concentrates obtain usually using relative height of sedimentation velocity of heavy minerals particles contained in pulp in comparison with sedimentation velocity enclosing strata and/or soil particles under the action of Earth gravitation field. The sediments wash off from many non-metallic particles by water or, sometimes, other liquid flow (Shokhin V.N., Lopatin A.G. «Gravitation methods of enrichment*, Moscow: NEDRA Publishing House, 1993; in Russian: LUOXMH B. H., Jloπaτι/iH AT. «rpaBMτau,M0HHbie Meτoflbi o6orameHHfl», MocKBa: HEflPA, 1993). Pulp based on water, obtained concentrates and enrichment's tails as mechanical mixtures of chemically unchanged enclosing strata and/or soils particles and non-separated residues of heavy minerals are inert biologically. Therefore, any gravitation enrichment is practically safety for miners and for natural environment.
However, efficacy of gravitation enrichment decreases as density of target product and density of enclosing strata and/or soils draws together and concentration of fine-dispersed or lamellar particles of valuable heavy mineral increases. Moreover, even if density difference between target product and enclosing strata and/or soils is large (for example, similar to density difference between native gold and quartz sand) "classical" dragging of placers is accompanied by almost full loss of fine-dispersed and/or lamellar particles of gold. For example, extraction about 300 tons of gold from placers in the Amur region of
Russian Federation was finished in accumulation more than 109 m3 tails. As "IRGIREDMET institute" is estimated, these tails contain more than 600 tons of non-separated gold. In other words, the large (on reserves) and practically inaccessible (for usual extraction means) man- caused placer is appeared instead of natural placers. Such losses of gold are caused, as a rule, by use of usual drags and washing devices equipped with strakes of shallow filling. They have monolithic cellular carpets and hard immobile stencils (Karmazin V.I. Processes and machines for enrichment of minerals. - M: NEDRA Publishing House, 1974, pp.115-188; in Russian: Kapwia3MH B.M. πpoLjeccbi M wiaiiiMHbi ana oδoramem/m πoπe3Hbix MCKonaewibix. - M: HEflPA, 1974, c. 115-188). These strakes and catching carpets are simple in design and production and easy-to- operate. However, cells of said carpets are filled by sediment very quickly (for 1 ,5-2 hours of
functioning) and tight. Therefore, small grains and, especially, fine-dispersed and/or lamellar particles of gold skip over arisen «bed» and, together with pulp flow, take away into dump, and obtained concentrate contains the target product too little.
For suppression of this undesirable effect many scientists recommend (up to now), and gold-diggers use practically the simplest method including the steps of: periodic interruption of pulp delivery into the strake, evacuation of the catching carpet, and washing off accumulated concentrate from the carpet cells.
This method decreases productivity of strakes the more so as pulp flow could be interrupted more often. These interruptions may increase cost price of target product so, that its extraction could be unprofitable if even climate allows all-the-year-round mining of placers.
Therefore, attempts to find methods and means for prevention of rapid and excessive compaction of "bed" in strakes are continued.
Thus, SU 831180 discloses loosening of "bed" by forced vibrations of stencils riffles. Unfortunately, this method provides loosening the upper layer of lade-down in catching carpets cells clastic material only while subjacent layers remain untouched practically.
It is known connection of strakes as a whole to the vibrators in order to stir up of all mass of concentrate (see op cit book of V.N. Shokhin and A.G. Lopatin, pp.221 and 228), but this way involves high power inputs and intensive destruction of the strake basic parts. Moreover, vibrations of the strake do not provide effective loosening of concentrate yielding near bottom of the catching carpet cells (especially when black schlich and gold precipitate together).
Therefore, loosening of concentrate for facilitation of separation of enclosing strata and/or soils particles (that are formed the tails of enrichment preferably) from the yielding fine-dispersed and/or lamellar target product particles must be as possible more purposeful.
Strake and catching carpet according to the RU 2095147, which are most near on structures to proposed further strake and carpet, provides such comparatively purposeful loosening of concentrate.
The known strake (Fig.1 and specification of RU 2095147) has: (1) a flow-through gutter at least a bottom of which is produced from non-ferromagnetic material and which, when it operates, is inclined to the horizontal line and connected by upper end to a pulp source and by lower end to a means for dumping tails of enrichment,
(2) a cellular catching carpet which is placed on the flow-through gutter bottom and equipped with permanent magnetic elements at least under some cells, (3) a set of cinematically linked hard stencils of shallow filling, each of which is connected to at least one drive for its reciprocal motion along the flow-through gutter sides
O and said carpet and has:
(3a) at least two longitudinal rows of lengthwise undulating riffles that are placed at one level above the catching carpet, and
(3b) transversal riffles that are placed in spaces between said rows of undulating riffles and between each extreme row of said riffles and flow-through gutter sides,
(4) a means for excitation of vertical vibrations within the pulp stream based on pulse alternating current generator and such solenoids, windings of which are connected to said pulse generator and upper ends of which are placed under those catching carpet cells, which are equipped with said permanent magnetic elements, Optionally, the known strake can be equipped with:
(5) set of such cinematically linked hard stencils of deep filling each of which comprises of lengthwise undulating riffles (these riffles are located either in first strake section above the catching carpet, or in any other strake section above the respective stencils of shallow filling and connected to proper longitudinal reciprocal motion drive), and/or (6) transversal riffles which are fastened rigidly in the stencil frames and placed between the rows of undulating riffles and between each extreme row of such riffles and respective side of flow-through gutter, and have height that is practically equal to height of undulating riffles.
A known catching carpet (Fig.2 of RU 2095147) has: upper elastic cellular layer in which each cell is confined by bottom and skirting, substrate elastic layer fastened at least in run-position to the upper layer, and flat permanent magnet elements that are fastened with substrate layer and located at least under some cells of upper layer,
In described strake, the undulating riffles and transversal riffles of oscillated stencils and skirting of catching carpet cells decelerate the pulp stream and distort the velocities' field of hard particles purposefully. Thus, «easy particles" of enclosing strata and/or soils move off from each bulge of undulating riffle, which skirts pulp stream in any channel, and the heavy minerals particles remain nearby or even approach these bulges. Vertical vibrations of said carpet parts under pulse solenoids' and permanent magnets' action loose concentrate precipitated into the carpet cells. As a result, repeated rearrangement of all hard particles in the velocities' field promotes enrichment of concentrate by target product distinctly.
However, long exploitation of known strake allows to define that it is effective practically under such conditions as: substantial similarity of initial granulometric compositions of dispersed enclosing strata and/or soils and valuable heavy minerals, stability of ratio H/L (that is «Hard phase/Liquid) in pulp in preferable range from 1/10 to
1/7, because "high-liquid" pulp carries the «bed» into dump easily and even wash away the sediment from cells but excess of hard phase hampers loosening of sediment, practical lack of such admixtures as «black schlich».
However, even such favorable conditions are insufficient in order to transfer of most part of fine-dispersed and/or lamellar particles of valuable heavy minerals into concentrate. This undesirable effect is caused by: blending of half-sinusoids of undulating riffle, which do not allow (even with transversal riffle) to fix, even at a short time, such rearrangement of density heterogeneous particles, that may be achieved on each turn of pulp stream, in respect to the catching carpet cells, and vertical vibrations of practically all sediment mass that promote entrapment of fine- dispersed and/or lamellar particles of valuable heavy minerals by pulp flowing in curvilinear channels and carry-over of those particles into dump. This entrapment increases as thickness of «bed» on the known catching carpet grows. Accidental allocation of permanent magnetic elements under carpet cells and undulating riffles increases this entrapment too. Accordingly, the losses of target product may be decreased on the initial stage of the catching carpet cells filling by concentrate only.
Brief Description of the Invention
The invention is based on the problem of creation - by change of form and positional relationship of means intended for interrupting stream pulp and loosening of sediment by vertical pushes - such strake and catching carpet which could decrease carry-over of fine- dispersed and/or lamellar particles of valuable heavy minerals into dump substantially and, thus, increase efficiency of target products extraction and their share in any concentrate.
This problem is solved in that in strake for precipitation of heavy minerals concentrates from pulp, having: (1) a flow-through gutter at least a bottom of which is produced from non-ferromagnetic material and which, when it operates, is inclined to the horizontal line and connected by upper end to a pulp source and by lower end to a means for dumping tails of enrichment,
(2) a cellular catching carpet which is placed on the flow-through gutter bottom and equipped with permanent magnetic elements at least under some cells, (3) a set of cinematically linked hard stencils of shallow filling, each of which is connected to at least one drive for its reciprocal motion along the flow-through gutter sides and said carpet and has:
(3a) at least two longitudinal rows of lengthwise undulating riffles that are placed at one level above the catching carpet, and (3b) transversal riffles that are placed in spaces between said rows of undulating riffles and between each extreme row of said riffles and flow-through gutter sides,
(4) a means for excitation of vertical vibrations within the pulp stream based on pulse alternating current generator and such solenoids, windings of which are connected to said pulse generator and upper ends of which are placed under those catching carpet cells, which are equipped with said permanent magnetic elements, according to the invention
(5) alternated in series to bulge direction half-sinusoidal parts of each undulating riffle are connected by flat insertions, height of which is practically equal to the height of said half- sinusoidal parts,
(6) the transversal riffles, in each their row, are formed as set of separate rotary plates placed within respective channels,
(7) each row of said separate rotary plates is suspended on a rod pierced respective said flat insertions at a level no more than the half of their height,
(8) each placed under respective cell of the catching carpet permanent magnetic element is placed under points of intersection of the geometrical axis one of said rods and the symmetry plane one of said flat insertions too.
These forms and positional relationship of undulating and transversal riffles and permanent magnet elements under the cells of catching carpet allow: first, interrupt such rearrangement of «easy particles» of enclosing strata and/or soil and heavy minerals particles in horizontal velocities' field that was provided during pulp motion around each next half-sinusoid part of undulating riffle (this interruption occurs at short-time near each flat insertion placed between each pair of the half-sinusoidal parts of said undulating riffle), second, promote vertical rearrangement of said particles and, as a results, precipitation of heavy particles and «emersion» of easy particles during each interruption of said horizontal rearrangement, and third, shake effectively (by vertical vibrations of sediment and pulp in a volume being found above each permanent magnetic element) practically all concentrate yielding in cells in order to suspend «easy particles» of enclosing strata and/or soils mainly and kick their basic part over the transversal riffles into pulp stream and then into dump.
As a result of these synchronous processes those occur within and above the catching carpet cells, fine jigging of valuable heavy mineral particles is lightened. Therefore, share of target product in concentrates and its extraction efficiency increase substantially in each work cycle of the strake. Said advantages appear if even - initial granulometric compositions of enclosing strata and/or soils and valuable heavy minerals are different substantially, hard phase of initial pulp contains appreciable amount of black schlich, and the H/L ratio is less than 1/10 or more than 1/7.
The first additional feature consists in that said flat insertions of undulating riffles have recesses in their lower parts, and said transversal riffle plates have also in their lower parts at least such one-sided lateral ledges which are placed within said recesses. It allows to limit turns of transversal riffle parts under pulp stream head and speed of hard particles dumping. This is especially important at each next start of process.
The second additional feature consists in that the strake is equipped with at least one magnetic separator that is placed above at least one selected stencil and connected to reciprocal motion drive relative to this stencil; the separator comprises of magnets their quantity and plane position correspond to the quantity and plane position of permanent magnetic elements under the catching carpet cells. Such separator allows catch the ferromagnetic particles of black schlich at vertical vibrations of pulp temporally. Thus, precipitation of said schlich particles together with target product particles into the catching carpet cells hinders substantially.
The third additional feature consists in that said magnetic separator comprises of a non- ferromagnetic box and set of flat magnets that are placed on pendants within said box and connected to drive of their synchronous swinging movement relative to the bottom of said box. Such magnetic separator allows to select the black schlich ferromagnetic particles at moments of local pulp splashes and to give back of theirs into pulp stream at moments of local lowering pulp level most effectively.
Said problem is solved also in that in the catching carpet for precipitation of heavy minerals concentrates from pulp, which has: upper elastic cellular layer in which each cell is confined by bottom and skirting, substrate elastic layer fastened to the upper layer at least in run-position, and flat permanent magnet elements that are fastened with substrate layer and located at least under some cells of upper layer, according to the invention each cell of upper layer is equipped with petalous valve that is located above its bottom, and with poil filaments that are fastened to said bottom between the said valve petals and said cell skirting.
The valves petals in said cells open during each vertical push of such catching carpet caused by solenoids and flat permanent magnetic elements and, respectively, push sediment upwards, causing micro-eddies in a liquid medium. Under these conditions, belong to sediment "easy particles" of enclosing strata or soils get through poil filaments and give back into pulp stream relatively easy in comparison with fine-dispersed and, especially, lamellar particles of heavy minerals. In fact, they pull again into cells under action of said poil filaments that turn down during reverse motion of said valves petals. As a result, dumping of heavy minerals particles decreases and share of target product in concentrates and efficiency of its extraction increase substantially.
The first additional feature consists in that the width b of crack in each petalous valve ground is related to width B of the carpet cell according to the ratio b = (0,2-0,33)*B. This ratio is preferable in respect of optimal stir of lade-down concentrate when said carpet shakes up.
The second additional feature consists in that the height h of poil filaments is related to height H of the skirting of each carpet cell according to the ratio h = (0,5-2,5) H. It promotes effective precipitation of lamellar particles of such heavy minerals as gold, platinum and silver, and fine- dispersed liquid mercury.
The third additional feature consists in that the petals of each valve are closed in initial position. It hinders to intrusion of sediment into valve sub-petalous space that is especially important in the initial period of concentrate precipitation.
The fourth additional feature consists in that the length L is related to the width B of each carpet cell according to the ratio L = (2,5-4,0) B. It promotes to dumping of "easy particles" of enclosing strata or soils and increase of target product share in concentrates additionally.
It is clear to each person skilled in art that arbitrary combinations of the basic invention and said additional features are possible. Thus, the described below preferable embodiments don't limit the measure of rights nowise.
Brief Description of the Drawings
The invention will now be explained by detailed description of strake and catching carpet with references to the accompanying drawings, in which: Fig.1 shows positional relationship (in view from above) of stencils parts and flat permanent magnetic elements under the cells of catching carpet (with partial cutaway on butt ends and from the one flow-through gutter side);
Fig.2 shows transversal riffle plates pendant on rod (axonometric view); Fig.3 shows position of transversal riffle plates in relation to undulating riffles (end-view); Fig.4 shows the strake section equipped with a magnetic separator (end-view with cutaway of one flow-through gutter side);
Fig.5 shows a catching carpet (transverse section);
Fig.6 shows diagram of rearrangement of enclosing strata and/or soil «easy particles» and heavy minerals particles in horizontal velocities' field in any curvilinear channel part (axonometric view); Fig.7 shows diagram of short-time interruption of rearrangement of hard particles having different density in velocities' field near the flat insertions in undulating riffles and transversal riffle plates (view from above).
Best mode Carrying out of the Invention
The flow-through gutter 1 is a basis of any strake according to the invention (Fig.1). It has lateral sides 2 and bottom 3 produced from non-ferromagnetic material.
In run-position, said gutter 1 is inclined to the horizontal line (usually under an angle in
the range from 6° to 11°) and connected by its upper end to a pulp source and by its lower end to a means for dumping of enrichment's tails.
A cellular catching carpet 4 (showed on Fig.1 as intersecting lines) is placed on the bottom 3 of said gutter 1. Said carpet 4 is equipped with flat permanent magnetic elements 5 at least under some cells (the contours of these elements 5 are shown conditionally on Fig.1 as little circles).
A set of cinematically linked hard stencils 6 of shallow filling (designated on the whole on Fig.1 by arrows) must be placed above the carpet 4. These stencils 6 are produced from non-ferromagnetic material usually and connected to at least one suitable reciprocal motion drive of theirs along the sides 2 of said gutter 1 and said carpet 4 (this drive is designated conditionally on Fig.1 by pair of oppositely directed arrows). Each stencil 6 has: first, at least two rows of undulating riffles that are located along the sides 2 of said gutter 1 at one level above a carpet 4; each such riffle consists of practically identical on a height alternated to bulge direction half-sinusoidal parts 7 shaped as circular semicylinders usually, and flat insertions 8 fastened between each neighbor half-sinusoidal parts 7, and second, at least two sets of plate transversal riffles 9 that are suspended on separate rods 10 with possibility of turn into channels between the rows of undulating riffles 7,8 and extreme rows of such riffles 7,8 and the sides 2 of said gutter 1.
The rods 10 are skipped through said insertions 8 usually at a level no more than half height of theirs. Each magnetic element 5 is placed practically under the point of intersection of the geometrical axis one of a rod 10 and symmetry plane one of a flat insertion 8.
It is desirable for limitation of the transversal riffle plates' 9 turns, that - lower parts of said plates 9 are equipped with at least one-sided lateral ledges 11 , said flat insertions 8 of undulating riffles are equipped with recesses 12 in lower parts too, and said ledges 11 are placed within said recesses 12 (see Fig.3).
Each strake according to the invention has the means for excitation of vertical vibrations within pulp stream base on not shown especially suitable pulse alternating current generator and solenoids 13 (Fig.4). Windings of said solenoids 13 are connected to said pulse generator, and upper their ends are placed under those cells of catching carpet 4, which are equipped with flat permanent magnetic elements 5.
Desirably, that the strake is equipped with at least one magnetic separator for catching of ferromagnetic particles from pulp stream and, thus, decreasing their precipitation into concentrate. Expediently, that such separator (see Fig.4) comprises of: impenetrable for pulp non-ferromagnetic box 14 that is placed within said gutter 1 above at least one selected stencil 6 (or, preferable, above all stencils 6) of shallow filling,
a is not shown especially and designed by oppositely directed arrows only such suitable reciprocal motion drive of said box 14 relative to said stencil 6 that operates, as a rule, in the antiphase mode with the stencils 6 drive, set of flat magnets 15 that are placed on hinged pendants 16 within said box 14 and connected to (for example, pusher) drive 17 for their synchronous swinging movement relative to the box 14 bottom.
Quantity and plane position of said magnets 15 correspond to the quantity and plane position of permanent magnetic elements 5 under the catching carpet 4 cells.
The strake may be used for extraction of valuable heavy minerals and exploration of placers with arbitrary cellular catching carpet 4 that is equipped with said permanent magnetic elements 5 fastened in staggered rows or in other suitable order under at least some carpet 4 cells. However, it is preferable to use the catching carpet 4 according to the invention for placers' mining and, especially, for exact estimation of mineable reserves of valuable heavy minerals. Such carpet 4 has (see Fig.5): substrate layer 18 produced from elastic material, upper cellular layer 19 that is produced from elastic material also, connected to the substrate layer 18 at least in run-position and equipped with such cells 20 each of which is confined by skirting 21 and bottom 22, above-mentioned magnetic elements 5 are fastened with the substrate layer 18 and located at least under some cells 20 of the upper layer 19. petalous valves 23 that are located above the bottom 22 of each cell 20, and poil filaments 24 that are connected to the bottom 22 of each cell 20 and placed between the valves 23 petals and the skirting 21 of said cell 20.
It is desirably if - width b of crack in each petalous valve 23 ground is related to width B of the cell 20 according to the ratio b = (0,2-0,33) B; height h of poil filaments 24 is related to height H of the skirting 21 of each cell 20 according to the ratio h = (0,5-2,5) H; each valve 23 petals were closed in initial position; the length L is related to the width S of each cell 20 according to the ratio L = (2,5-4,0) B, and the each magnetic element 5 width is no less than width b of crack in each petalous valve 23, or preferably equal to this width b, but did not exceed the width B of the cell 20.
Linear sizes of the cells 20 and other parts of the catching carpet 4 may be selected by person skilled in art taking into consideration initial granulometric composition of enclosing strata and/or soils contained heavy minerals and heavy mineral as such. Usually, the sizes of
cells 20 (in mm) are following: the width in the range from 5 to 10, the length in the range from 10 to 25, the bottom 22 thickness in the range from 1,5 to 2,0, and the skirting 21 height does not exceed 10.
Naturally, above-mentioned sizes serve for orientation only and in no way limit possibility of choice of concrete sizes of the carpet's 4 details.
The carpet 4 may be produced preferably as entire article. This provides stability of magnetic elements 5 location under cracks in the petalous valves 23 grounds. However, upper cellular layer 19 wears out quickly in comparison with substrate layer 18. Therefore, layers 18 and 19 are produced in practice separately.
Exploration and mining of heavy minerals placers using invention carry out as follows.
The flow-through gutter 1 arranges in run position at angle in the range of 6° to 11° to the horizontal line. The cellular catching carpet 4 places on the bottom 2 of said gutter 1 so those flat elements 5 locate practically exactly under the cells 20, or under cracks in the petalous valves 23 grounds (if carpet 4 according to the invention will be used).
Then the reciprocal motion drive of the stencils 6 switches and delivery of pulp begins. The solenoids 13 can be connected to the pulse current source with some time lag, but no more later when pulp will be appear on the flow-through gutter 1 exit. Curvilinear channel parts between the reciprocal mobile undulating riffles 7,8 and such extreme riffles and the sides 2 of said gutter 1 distort velocities' field of «easy particles» of enclosing strata and/or soils and «heavy particles» of target product and cause rearrangement of those particles within pulp down-stream.
It is shown on Fig.6, where dark and light circles correspond to the «heavy" and «easy» particles, and half-dark circles correspond to other intermediate particles. In fact, action of resulting force F as a vector sum of the earthly gravitation force F1 and centripetal force F2 causes that «heavy particles» tend to precipitation nearby a surface having minimal radius but
«easy particles» tend to passage along a surface having maximal radius of curvature.
Reciprocal motion of the stencils 6 promotes described rearrangement of hard particles in channels additionally.
The substantial features of the strake work are following (see Fig.7): each flat insertion 8 between the half-sinusoidal parts of each undulating riffles 7 causes short-time interruption of rearrangement of hard particles within the pulp stream flowing along the insertion lateral surfaces, impingement of pulp stream with said plates 9 of the transversal riffles suspended on the rods 10 promotes transference of «heavy particles» into such cells 20 of the catching
carpet 4 under which magnetic elements 5 are placed (these areas, that are marked by black color on Fig.7. are confined by the half-sinusoids parts 7 edges, a portion of each flat insertion 8 and a portion of each transversal riffles' plate 9), vertical pushes acting on the cellular layer 19 of the catching carpet 4 during vibrations of magnetic elements 5 caused by solenoids 13 shake of practically all mass of settling within the cells 20 concentrate effectively.
Accordingly, «easy particles» of enclosing strata and/or soils float to the surface of pulp stream and slip through the upper transversal riffles 9 cuts into dump, but «heavy (including even fine-dispersed and/or lamellar) particles* of valuable heavy mineral fall down the transversal riffles 9 surface into the catching carpet 4 cells 20 and create the concentrate.
Passage of «heavy particles» through a gap between stencils 6 and the skirting 21 of the catching carpet's 4 cells 20 (see Fig.4) is straitened because turn angle of transversal riffle plates 9 is limited by edges of recesses 12 in the flat insertions of undulating riffles 8. This advantage is important especially at each next start of process. The most effective catching of fine-dispersed and/or lamellar particles of valuable heavy minerals and increasing of target product share in concentrate are provided using catching carpet 4 equipped with petalous valves 23 (Fig.5).
In fact, each power-up of the solenoids 13 pushes the permanent magnetic elements 5 vertically. As a result, the valves 23 petals open slightly and push sediment upwards, causing micro-eddies in the liquid medium. These micro-eddies stimulate, first of all, stirring-up of sunken within the cells 20 relatively easy particles of enclosing strata and/or soils that slip through poil filaments 24 and go back into pulp stream usually. At the same time, fine- dispersed and, especially, lamellar heavy minerals particles keep by deflecting poil filaments 24 within the cells 20 when the valves 23 petals move downward. This positive effect occurs most evidently during gold extraction from man-caused placers and demercuration because - gold particles settling between the skirting 21 of the cells 20 and sloping petals surfaces of the petalous valves 23 form dense mass jammed in the gap between opening petals, and micro-particles of liquid mercury flow together and form large slow-moving drops. If pulp contains admixture of ferromagnetic black schlich particles, the strake must be operating with the magnetic separator which placed above the stencils 6 (Fig.4).
Reciprocal motion of the box 14 by the pusher 17 (as a rule, antiphase to the stencils 6 motion) and turns of the flat magnets 15 between positions the «parallel» and «at right angle» to the box 14 bottom provide: «snatching» of ferromagnetic particles from the pulp stream in channels at moments of local pulp splashes when permanent magnetic elements 5 push the cells 20, and
back-ejection of these particles into pulp stream in other moments of strake operation (usually with their dumping over transversal riffles 9).
After filling of cells 20 - pulp stream through the strake interrupts, at least upper cellular layer 19 of said catching carpet 4 extracts from the flow-through gutter 1 , and concentrate evacuates from cells 20 and pack up into not shown here container (for storage and transfer to near work that can extract of target product).
Further process may be repeated as described above. Industrial applicability
Strakes and catching carpets according to the invention may be easy producing industrially using the arbitrary machine-building plants and factories for rubber goods production. The strakes can be used preferably as output devices of: drags or other devices for hydraulic mining of such both natural and man-caused placers those contain precious metals particles related to preferable shallow granulomere classes (less than 0.15 mm), and traditional schlich-concentrating devices and factories.
In addition, strakes with catching carpets according to the invention are applicable: for cleaning of industrial wastes containing the fine-dispersed mercury particles, lead, arsenic and other heavy metals, for selection of unprofitable gold and platinum admixtures to such friable build materials as sands (at the time of their hydraulic extraction), for accompanying precious metals extraction (even from such unprofitable until now placers as ground precipitation that recover usually when navigating channels and marine shelves deep), for exploration works and researches studies of soils, residual soils, processes of supergene mineralization and sedimentary deposits.
Claims
C L A I M S 1. Strake for heavy minerals concentrates precipitation from pulp having:
(1) a flow-through gutter at least a bottom of which is produced from non-ferromagnetic material and which, when it operates, is inclined to the horizontal line and connected by upper end to a pulp source and by lower end to a means for dumping tails of enrichment,
(2) a cellular catching carpet which is placed on the flow-through gutter bottom and equipped with permanent magnetic elements at least under some cells,
(3) a set of cinematically linked hard stencils of shallow filling, each of which is connected to at least one drive for its reciprocal motion along the flow-through gutter sides and said carpet and has:
(3a) at least two longitudinal rows of lengthwise undulating riffles that are placed at one level above the catching carpet, and
(3b) transversal riffles that are placed in spaces between said rows of undulating riffles and between each extreme row of said riffles and flow-through gutter sides, (4) a means for excitation of vertical vibrations within the pulp stream based on pulse alternating current generator and such solenoids, windings of which are connected to said pulse generator and upper ends of which are placed under those catching carpet cells, which are equipped with said permanent magnetic elements, characterized in that (5) alternated in series to bulge direction half-sinusoidal parts of each undulating riffle are connected by flat insertions, height of which is practically equal to the height of said half- sinusoidal parts,
(6) the transversal riffles, in each their row, are formed as set of separate rotary plates placed within respective channels, (7) each row of said separate rotary plates is suspended on a rod pierced respective said flat insertions at a level no more than the half of their height,
(8) each placed under respective cell of the catching carpet permanent magnetic element is placed under point of intersection of geometrical axis one of said rods and the symmetry plane one of said flat insertions too.
2. Strake according to claim 1 , characterized in that said flat insertions of undulating riffles have recesses in their lower parts, and said transversal riffle plates have also in their lower parts at least such one-sided lateral ledges which are placed within said recesses.
3. Strake according to claim 1 or claim 2, characterized in that it is equipped with at least one magnetic separator that is placed above at least one selected stencil and connected to reciprocal motion drive relative to this stencil; the separator comprises of magnets their quantity and plane position correspond to the quantity and plane position of permanent magnetic elements under the catching carpet cells.
4. Strake according to claim 3 characterized in that said magnetic separator comprises of a non-ferromagnetic box and set of flat magnets that are placed on pendants within said box and connected to drive of their synchronous swinging movement relative to the bottom of said box.
5. Catching carpet for precipitation of heavy minerals concentrates from pulp having: upper elastic cellular layer in which each cell is confined by bottom and skirting, substrate elastic layer fastened to the upper layer at least in run-position, and flat permanent magnet elements that are fastened with substrate layer and located at least under some cells of upper layer, characterized in that each cell of upper layer is equipped with petalous valve that is located above its bottom, and with poil filaments that are fastened to said bottom between the said valve petals and the cell skirting.
6. Catching carpet according to claim 5 characterized in that the width b of crack in each petalous valve ground is related to width B of the carpet cell according to the ratio b - (0,2-0,33)S.
7. Catching carpet according to claim 5 characterized in that the height h of poil filaments is related to height H of the skirting of each carpet cell according to the ratio h = (0,5-2,5) H.
8. Catching carpet according to claim 5 characterized in that the petals of each valve are closed in initial position.
9. Catching carpet according to claim 5 characterized in that the length L is related to the width B of each carpet cell according to the ratio L = (2,5-4,0) B.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005327303A AU2005327303A1 (en) | 2005-02-11 | 2005-02-11 | Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof |
| PCT/UA2005/000006 WO2006085831A1 (en) | 2005-02-11 | 2005-02-11 | Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof |
| CN2005800468928A CN101102849B (en) | 2005-02-11 | 2005-02-11 | Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/UA2005/000006 WO2006085831A1 (en) | 2005-02-11 | 2005-02-11 | Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006085831A1 true WO2006085831A1 (en) | 2006-08-17 |
Family
ID=34965886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/UA2005/000006 WO2006085831A1 (en) | 2005-02-11 | 2005-02-11 | Strake for heavy minerals concentrates precipitation from pulp and catching carpet thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101102849B (en) |
| AU (1) | AU2005327303A1 (en) |
| WO (1) | WO2006085831A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009041930A1 (en) * | 2007-09-24 | 2009-04-02 | Oleksii Eduardovich Chertilin | Strake for extraction of heavy minerals from pulp |
| CN101992939A (en) * | 2010-09-13 | 2011-03-30 | 马鞍山钢铁股份有限公司 | Powder containing lump ore conveying system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU831180A2 (en) * | 1972-06-30 | 1981-05-23 | Прииск "Ударник" Ордена Октябрьскойреволюции Сусуманского Горнообогати-Тельного Комбината Объединения"Северовостокзолото" | Sluice |
| SU1440545A1 (en) * | 1986-04-14 | 1988-11-30 | В.И.Семенов, И.К.Грабчак и Н.П.Борисов | Sluice box for concentrating mineral resources |
| RU2095147C1 (en) * | 1995-05-03 | 1997-11-10 | Виктор Трофимович Кардаш | Method of placer mineral concentration by continuous loosening of heavy mineral concentrate and device for its embodiment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2118589U (en) * | 1991-11-04 | 1992-10-14 | 李万恒 | Stepless speed-regulating hair felt launder |
| CN2213570Y (en) * | 1994-09-27 | 1995-11-29 | 王振 | Gold Concentration plastic felt |
-
2005
- 2005-02-11 CN CN2005800468928A patent/CN101102849B/en not_active Expired - Fee Related
- 2005-02-11 WO PCT/UA2005/000006 patent/WO2006085831A1/en active Application Filing
- 2005-02-11 AU AU2005327303A patent/AU2005327303A1/en not_active Abandoned
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU831180A2 (en) * | 1972-06-30 | 1981-05-23 | Прииск "Ударник" Ордена Октябрьскойреволюции Сусуманского Горнообогати-Тельного Комбината Объединения"Северовостокзолото" | Sluice |
| SU1440545A1 (en) * | 1986-04-14 | 1988-11-30 | В.И.Семенов, И.К.Грабчак и Н.П.Борисов | Sluice box for concentrating mineral resources |
| RU2095147C1 (en) * | 1995-05-03 | 1997-11-10 | Виктор Трофимович Кардаш | Method of placer mineral concentration by continuous loosening of heavy mineral concentrate and device for its embodiment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009041930A1 (en) * | 2007-09-24 | 2009-04-02 | Oleksii Eduardovich Chertilin | Strake for extraction of heavy minerals from pulp |
| CN101992939A (en) * | 2010-09-13 | 2011-03-30 | 马鞍山钢铁股份有限公司 | Powder containing lump ore conveying system |
| CN101992939B (en) * | 2010-09-13 | 2013-03-27 | 马鞍山钢铁股份有限公司 | Powder containing lump ore conveying system |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005327303A1 (en) | 2006-08-17 |
| CN101102849B (en) | 2010-05-26 |
| CN101102849A (en) | 2008-01-09 |
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