Method for dredging of hard-dredging thawed placers

FIELD: mining.

SUBSTANCE: invention relates to mining industry and can be used in dredging of thawed placers. Method includes removal of dead ground from dredging site, digging of drainage trench, pre-dredging of sand layer, removal of boulders, flooding and dredging of sands. Pre-dredging is performed over the uncovered area through sand blading by backhoe excavator, which draws transverse juds in travelling trench.

EFFECT: improved dredger performance, reduced loss of mineral in the soil, and lower unit costs of dredging of hard-dredging placers.

2 cl, 2 dwg

 

The invention relates to the mining industry and can be used when designing dredging method thawed gravel deposits.

Known dredging method of placer developments, which has the best technical-economic indicators in comparison with other methods.

However, the scope of application of this method is limited by the number of mining and geological criteria. The most effective mnogozachatkovye Draghi used for developing predominantly irrigated fields, presents legkoperevarimye rocks [1].

The disadvantages of this method are:

- significant decrease in performance Draghi while rising energy costs on trudnoobrabatyvaemyh Sands (increased stony, hard cemented sediments);

- leaving michalovich and mihalovich pillars at the bottom of the richest part of the reservoir;

the inability of the development of the upper layer of solid rock of the float;

the inability of developing Sands even with average strength light drag (capacity scoops 80 litres or less).

Also known is a method of preparation of placers to the development, which is in preparation Sands permafrost alluvial deposits bulldozer for testing dredging method [2].

The essence of the method lies in the fact that the houtem layer thawing permafrost cutting thawing bulldozer waste rock and sand, containing useful components, place on a raft in separate piles. Then dumps Sands, located between the waste rock dumps, flood and operate the dredge.

The disadvantage of this method is the use of expensive mode of transportation of rock mass with a bulldozer, and this leads to higher mining in General. Using this method is economically justified on frozen fields that require large areas for natural thawing, but not melted.

The known method development trudnoreshaemyh placers, taken as a prototype, including Stripping, creating a drainage trench along a prepared area to the raft, Perevalova sand, boulder removal, flooding and dredging [3].

The method is as follows. Traversed opening production in the form of the pit to the raft. After Stripping of the float, begin the removal of peat and Perevalova sand in the pit with separate their accommodation by area. In these works the most appropriate equipment are excavators, draglines.

The disadvantages of the method:

the poor performance of dragline on trudnoobrabatyvaemyh Sands;

- inability Stripping the richest, but durable prilotkovoj of the reservoir because of the small efforts of the cutting edge of the bucket;

- neobhodimosti costly dragline with a big boom length;

- moving Sands when Perevalova at a relatively great distance.

The challenge which seeks the invention is to improve the performance of the dredge and the reduction of unit costs in the development of melt trudnoreshaemyh placers.

The task can be solved through technical result, which is in preparation trudnoreshaemyh placers to dredging by Perevalova Sands inexpensive equipment - excavator backhoe - without moving the rock mass over long distances.

This technical result is achieved in that in the method development thawed trudnoreshaemyh placers, including the removal of waste rock from the area of dredging, excavation of drainage trenches, preliminary development of the reservoir Sands, boulder removal, flooding and dredging of sand, according to the invention prior to the development of trudnorazlichimo reservoir Sands carried out on the area uncovered area by Perevalova Sands excavator backhoe cross benches moving the trench. For drainage slaughter excavator backhoe along a prepared plot are drainage trench to the float, and periodically renew by removal of the overburden, and the incoming ground water pumped by the pump.

The entity with whom the person is following.

The way of the development of melt trudnoreshaemyh placers carried out in three sites located along the alluvial deposits and formed periodically constructed dams. Far from the dredge site are overburden removal, on the second site make Perevalova Sands excavator backhoe, and the third dragonaut prepared Sands. On the second site before starting work on Perevalova Sands pass along an area of the drainage trench to the float and pump out the water.

Comparative analysis shows that the proposed method of development trudnoreshaemyh melt placers differs from the prototype, i.e., meets the requirements of the invention according to the criterion "novelty".

For evidence of conformity of the invention, the criterion of "inventive step" conducted an additional search and comparison with other technical solutions known from the information sources. Ways to develop trudnoreshaemyh melt placers, where Perevalova Sands excavator backhoe produced in the circuit of stocks is not detected. The proposed method of development trudnoreshaemyh melt placers meets the criteria of the invention "inventive step"as the totality of its essential features allows you to create conditions for high-performance, Draghi and the sa is output to lower unit costs when developing trudnoreshaemyh melt placers, to reduce the loss of minerals in the subsoil due to Perevalova sand at all depths (thanks to the effort of digging excavator backhoe), which is not obvious from the prior art.

Proof of compliance with the proposed method of development thawed trudnoreshaemyh placers the criterion of "industrial application" is the acceptance to use at the dredging site (local project testing Medium Colourscape dredging of the polygon in the Kemerovo region, performed "Irgiredmet" in 2007 under contract # 378/16 with Central gold mining company).

The invention is illustrated by drawings, where:

figure 1 shows a schematic diagram plots the training and testing dredging of the polygon in plan;

figure 2 is a longitudinal section areas of training and development dredging of the polygon along the line A-A.

Drawings made at the time of full development of the proposed technical solution.

The method is as follows.

Remove the overburden 1, for example, a bulldozer. After removal of the overburden 1 adjacent to the dredge area (front Stripping meanwhile, is moving up the valley along the border of the planned dredging progress excavator backhoe 2 is passed drainage trench 3. The length of the trench 3 and the need for pumping water is out of it depend on the slope of the float. The rock mass (sand) from the drainage trench 3 is temporarily placed on the blade 4 of the overburden. Perevalova rock mass (Sands) is carried out by excavator backhoe 2 by excavation of trenches 5 transverse to the extension of dredging stroke width of about 1 m at the bottom. At the beginning of Perevalova sand mountain mass of the first trench (the one closest to dredging the bottom) is laid out on the dividing pillar, and subsequent tranches - in the bed of the previous trench. Large boulders 6, uncovered during Perevalova of rock, laid excavator backhoe 2 on the surface and as they accumulate transported bulldozer 7 beyond the contour of the stock. Ground water from the drainage trench 3 pump 8 is discharged outside the zone of operation of the excavator backhoe 2.

The use of the proposed method will improve the performance Draghi, to reduce the loss of minerals in the subsoil and unit costs in the development of melt trudnoreshaemyh placers using excavator backhoe and not moving Sands outside of the outline of stocks.

Sources of information

1. Shorokhov S.M. in Technology and comprehensive mechanization of alluvial deposits. The textbook. manual for schools. - 2nd ed., revised and enlarged extra - M.: Nedra, 1973.

2. Description of the invention to the patent of Russian Federation №1683374, IPC5E21C 41/26, published. 20.10.1999,

3. About isana invention to author's certificate No. 1788267, IPC6E21C 41/26, published. 27.11.1995,

1. Method development trudnoreshaemyh melt placers, including the removal of waste rock from the area of dredging, excavation of drainage trenches, preliminary development of the reservoir Sands, boulder removal, flooding and dredging of Sands, characterized in that the preliminary development trudnorazlichimo reservoir Sands carried out on the area uncovered area by Perevalova Sands excavator backhoe cross benches moving the trench.

2. The method according to claim 1, characterized in that the dewatering slaughter excavator backhoe along a prepared plot are drainage trench to the float, and periodically renew by removal of the overburden, and the incoming ground water pumped by the pump.



 

Same patents:

FIELD: mining.

SUBSTANCE: invention refers to combined development of gold placers using mini-dredges. Complex consists of a dredge with a stacker and installations meant for deep processing of sandy and clay rock of gold placers, a high-head hydromonitor device with a system controlling the barrel movement in a vertical plane, and a hydraulic transport free-flow system. Complex is equipped with a bridge rigidly fixed in the dredge nose part. Bridge is provided with a round divertor intended for movement, and a round divertor meant for a support, which are rigidly fixed on the bridge posts. High-head hydromonitor device is installed on a base rotated by means of a drive. Rotary base is hinged to the platform and equipped with linear guideways. Platform is equipped with a drive of linear guideways which are connected with a round divertor intended for movement, and provided with an additional support connected with round divertor meant for the support.

EFFECT: intensifying mining process including development of terrace high-level placers.

4 dwg

FIELD: mining.

SUBSTANCE: invention refers to development of closely cemented and high plasticity sandy and clay rocks of terrace gold placers combined with development of the dredge range. Complex consists of a dredge with a stacker and installations meant for deep processing of sandy and clay rock of gold placers, a high-head hydromonitor device with a system controlling the barrel turn in a vertical plane, and a hydraulic transport pressure system. Complex is equipped with a bridge one end of which is hinged to a cross member of the dredge nose part posts and connected with a bridge turn drive, and free end is equipped with a linear guideway moving in a horizontal plane by means of a drive. Free end of the bridge by means of guides and sliding supports is telescoped with a crossbar with a stable support, which moves by means of a drive, and bridge is equipped with an additional stable support adjustable as per position relative to the hinge and movable linear guideway. Bridge is provided with longitudinal holes and guides. Additional stable support comes into contact with the bridge longitudinal holes, and is equipped with linear guideways coming into contact with the bridge guides. High-head hydromonitor device is installed on the end of the movable crossbar so that it can move in a vertical plane by means of a drive. The bridge turn drive is installed on a movable base connected via linear guideways to the guides.

EFFECT: intensifying mining process.

6 dwg

FIELD: mining.

SUBSTANCE: invention refers to development of congealed high-plasticity sandy and clay rocks of terrace gold placers combined with development of the dredge range. Complex with a hydromonitor laser system consists of a dredge with a stacker and installations meant for deep processing of sandy and clay rock of gold placers, a high-head hydromonitor device with a system controlling the barrel turn in a vertical plane, and a hydraulic transport pressure system. Laser infrared-radiation system is installed on a rotating platform angle-wise to high-head hydromonitor device with the possibility of simultaneous movement in vertical and horizontal planes. Rotating platform is installed on linear guideways, and hinged to the base, and to its swing drive. Base is connected to the guide posts by means of sliding supports and installed so that it can move in a vertical plane via a system of drive.

EFFECT: intensifying mining process of the dredge range including development of terrace high-level placers with congealed and high-plasticity sandy and clay rocks.

3 dwg

FIELD: mining.

SUBSTANCE: method of development of thick flat-lying coal bed on clots of irregular shape is intended for extraction of coal from sections with limited resources which for economic reasons can not be extracted by means of complex mechanisation. The method includes preparing an extraction pillar by making transport and ventilation entries at a bed roof and a hydro-transport entry at a bed floor with the axis of the hydro-transport entry set-off against the axis of the transport entry to the direction of massif. The extraction pillar is divided into strips with stopes; simultaneously there is assembled a roof bolting while leaving between-stopes massifs virgin. The stopes are made at the bed roof from the transport to ventilation entry. Neighbour stopes are linked with connections. A borehole is drilled approximately along the axis of the stope from the hydro-transport entry to each stope. A hydro-transport slit is cut with a hydro-monitored jet from the head of the borehole to the ventilation entry along the axis of the stope till the bed floor, and in the reverse direction coal is extracted with a hydro-monitor below the stope floor and partially under the massif from the flank side. Transporting of loose coal in mine workings above the stope floor is performed with traditional means, for example with self-propelled car and conveyer, while below the stope floor it is transported in form of pulp. After extraction of coal in stopes there is performed extraction of massif under the transport entry and further - under the ventilation entry by the similar method.

EFFECT: increased efficiency and safety of development.

2 cl, 6 dwg

FIELD: mining.

SUBSTANCE: complex method of hydro excavation of minerals consists of development mining, of equipping with ventilation system and system of heating of mine working, of hydraulic breaking up of bed with an automated mining combine in a continuous mode of operation with installation of face supports, of hydraulic transporting of broken rock, of concentration of obtained mass and its further dehydration, of drying of water encroached beds, and of purifying of process liquid with its recirculation. Hydraulic breaking up of a bed is carried out simultaneously with its impulse mechanical destruction by means of introducing an abrasive material of upgraded hardness into a liquid jet; further abrasive material is separated from broken rock at the time of its hydraulic transporting and concentrating; concentration of broken rock and partial separation of liquid pulp with abrasive material from broken rock are performed by means of transporting and mixing them at the roller type facility; flowing down pulp with abrasive material is driven to purification by means of a pumping system wherein solid particles of abrasive material are separated from the rest of the pulp and where abrasive material is saturated with solid particles of broken rock of specified dimension. Saturated abrasive material is directed to recirculation, while partially purified process liquid is mixed with the liquid obtained at drying of water saturated beds; then process liquid is finally purified by cold evaporation and is brought to recirculation. A portion of purified process liquid is supplied to the ventilation system of mine working and is dispersed in air in form of fine dispersed particles; continuous control measurements of air temperature, of explosion hazardous particles and coal dust contents in air are carried out during mine working operations.

EFFECT: upgraded versatility, efficiency, automaton, quality and reliability of process behavior in constraint conditions of mine working, improvement of ecological situation at mine.

4 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining and can be employed at development of deposits of minerals in form of an edge seam overlapped with mass of rocks of basic sediments by means of borehole hydraulic mining. The method of hydraulic borehole mining incorporates opening out a rock mass overlaying a producing horizon with a vertical borehole; then a successive boring of several producing inclined wells is performed out of this borehole in several directions along the pitch at a hanging wall, then up and down washing out of the horizon of deposits is carried out from producing wells, and as a hydraulic borehole device goes up, a case column is taken out; before termination of borehole washing out a required safety massif of rock is left at the upper portion of the borehole.

EFFECT: increased efficiency of hydraulic borehole mining of minerals and increased output owing to extension of development zone.

7 dwg

FIELD: mining.

SUBSTANCE: invention is referred to a mining industry and can be used in development of firm minerals. The method of hydro mining operations includes hydraulic crushing of a rock bed, hydro transportation of broken off rock, supply of stowing material in a worked out room using a pipe line. Loose rock is enriched and dehydrated, and the waste received at beneficiating of loose rock is blended with a pulp received at dehydration of loose rock. The obtained mixture is used for filling the waste area. Sacciform resilient perforated shell is put in the waste area. Further on, it is connected with the filling material pipe and filled with filling material under heavy pressure. The flowing fluid obtained by perforation is collected and sent for treatment and recirculation.

EFFECT: better filling reliability of the waste area and safety of mining operations, lower expenses for filling, improved ecological situation on mine and in its neighborhoods due to fluid recirculation in the technological process.

3 dwg

FIELD: mining engineering.

SUBSTANCE: bullet consists of external pulplifting pipe section 1 fitted with seal assemblers and inner water-and air delivering pipes 2 and 4, which upper ends are output from pulplifting pipes, lower end of water delivering pipe is fitted with checker 3, and lower end of air delivering pipe is fixed with sprayer 5. Inside pulplifting and air delivering pipes addition sectional pipe is installed 6 for delivering of warmed water and steam for defrostation of formations, which ends are derived beyond pulplifting pipe.

EFFECT: effectiveness improvement of excavation and working of frozen sedimentary strata.

5 cl, 3 dwg, 1 ex

FIELD: mining engineering.

SUBSTANCE: method includes reagent solution feeding in section for outside water bleaching, given for washing. At that outside water is divided in elementary fluent. Separate fluids are intermixing with reagent and unite them into common flow. Result is achieved by means of by fluids reagent feeding and more intensive mixing of flow with reagent.

EFFECT: effectiveness improvement of flocculation.

FIELD: machine building.

SUBSTANCE: environmental separation method in airlifting of submersible deposits of minerals and its implementation system which comprises lifted pipe, replenishment camera with a branch, feeding pipe, pump with force piping, air separator assembled on the lifted pipe, lifted pipe mixer connected to the force piping of the pump, compressor with a corresponding force piping, water separator assembled in an intermediate cross section of the pump force piping - separate accumulator, connected to a separate accumulator, and branch outgoing to environment, additional mixer connected to the pump force piping and to the compressor force piping, and fluid consumption sensor. Additional accumulator is installed in the intermediate cross section of the feeding pipe, and suction and force pipelines of an additional pump are tied to an additional accumulator. The separate accumulator comprises indicators of fluid level, suction pipeline of the additional pump is equipped with a tip, located in the additional accumulator. The force pipeline of the additional pump comprises pivotal position distributing valve, and blade wheel is installed in the additional accumulator. At that the force piping of the pump and the branch, connected to the separate accumulator, are equipped with corresponding controlled valves. The suction pipeline of the compressor is equipped with a filter and connected to an air separator, while a rotation speed sensor - a tachometer -is connected to the blade wheel.

EFFECT: improvement of environmental separation method in airlifting of submersible deposits of minerals; improvement of the ocean ecosystem.

2 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention refers to loose ground mining devices, and can be used for deep alluvial deposits of hard mineral resources, and mainly coastal shelf deposits. Alluvial mining device includes a body with a suction connection pipe and with scouring atomisers connected with a discharge cavity. Body is made in the form of a tubular shell the height of which exceeds the distance from surface to rim rock, and lateral dimensions of the body do not exceed a double action radius of scouring atomisers. Body cross section is square-shaped, at that scouring atomisers are arranged on the sides of the square, and suction connection pipes are located at its angles. Body is equipped at least with one vibrator. Internal wall of the body is equipped with a device forming a force impact which is perpendicular to internal surface of the body; device is made in the form of a hollow torus-shaped shell attached to internal surface of the body and equipped with the device changing pressure in the shell cavity, mostly with a reversible hydraulic pump.

EFFECT: providing the possibility of removing loose materials, and maintaining a vertical position of the resulting cavity walls.

3 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention refers to extraction of valuable minerals from hard and high viscous sand-clay rocks at open development of auriferous gravel deposits. The hydro-transporting pressurised system with the static cavitator consists of a tube bend and reflection elements. Elements of narrowing, elements of expanding and a reducing ring are located inside the straight section of the tube and are made complex from parts, the interior surfaces of which form conic surfaces with gaps. Tops of formed conic surfaces are turned to each other, while the reflection elements are conjugated with thrust collars and assembled before the narrowing elements and after the expanding elements down the hydro-stream motion; they are oriented along the axes of symmetry and axes of gaps of the narrowing and expanding elements of the static cavitator; the reflection elements are made in form of a right triangle, acute angles of which are oriented counter the hydro-stream motion before the narrowing elements, while they are oriented down the hydro-stream motion after the expanding element.

EFFECT: intensification of process of directed destruction of sand-clay rock by means of hydro-mechanical cavitation at pressurised hydro-transporting to systems of deep processing.

5 dwg

FIELD: mining.

SUBSTANCE: invention concerns mining and can be applied in dragging of tiered gravel deposits. The method involves combined dragging of valley placer tier together with bench and bench hillside placer sands, which are developed, shifted and laid by earth-moving machines to a surface of valley placer tier prepared for dragging in advance.

EFFECT: higher degree of deposit development.

2 dwg

FIELD: mining engineering.

SUBSTANCE: excavation method of alluvial deposits includes preliminary preparation of riffled opening and disruption module, preliminary mechanical breakage and fluid wash of formation in mine face, its distillation and direction into riffled opening, free-flow formation water transportation with its free slacking in transportation process. Following breakage, disintegration and supplying on formation processing are made consequently in disintegration module of technological complex, at that formation breakage is made under the influence of surface-active environment - water and moving with periodical vertical deepening of disintegrating scoop with cone bottom, and formation disintegration and carrying out of dead ground into barrow are made with moving of module fixed at the traverse pier with disintegrated scoop before carrying of prepared formation on processing complex conveyer.

EFFECT: effectiveness improvement of excavation with intensification of the formation breakage process with complex mechanical-and-physical properties while alluvial deposits working.

6 dwg 2 cl

FIELD: mining industry.

SUBSTANCE: said geotechnological complex is provided for disintegration of high-strength rock by means of disintegration automatic control system. The complex is provided with a rigidly supported trestle and mechanical disintegrators. The trestle cross beam has a centered and pivoted platform, which can be moved by means of rolling contact bearings, while mechanical disintegrators are provided with independent positioning system.

EFFECT: improved efficiency of mining due to intensification of disintegration of rock with complex physical and mechanical properties during dredging and placer mining.

6 dwg

FIELD: mining industry.

SUBSTANCE: said geotechnological complex for gold dredging and placer mining incorporates a module for preliminary disintegration and hydroerosion of rock in the face with guiding shields, a disintegrating module located below the level of grooved trench for rock hydraulic transportation, a processing complex with hydrotransportation systems and waste dumping system. The disintegrating module has a chute located inside the closed loop of trench for disintegrated rock accumulation. The chute is directed along the rock inflow for rock hydrotransportation and is sloped in the direction of waste dumping. Along the chute and over it, a rigidly supported trestle is installed. The trestle is provided with a bucket driven along the cross beam for rock disintegration. On both sides of the chute, at an angle, transverse flaring chutes with rigidly wall-mounted disintegrators are installed.

EFFECT: improved efficiency of mining due to intensification of disintegration of rock with complex physical and mechanical properties during dredging and placer mining.

6 dwg

FIELD: mining industry.

SUBSTANCE: said complex is provided with a supported trestle and an ultrasonic and mechanical tumbling module. Rotatable ultrasonic radiation module is connected to movable carriage rim by means of a hub and sliding supports. The movable carriage is provided with a drive for moving it along the trestle cross beam and a drive for turning the ultrasonic radiation module around the movable carriage yoke axis. The rotatable ultrasonic radiation module has drives for moving the ultrasonic sources in the vertical plane, a dual drive for moving the ultrasonic sources in horizontal plane, sensors to determine the rock physical and mechanical state, and communication links with functional module of disintegration process automatic control system.

EFFECT: improved efficiency of mining due to intensification of disintegration of rock with complex physical and mechanical properties during dredging and placer mining.

2 dwg

FIELD: mining industry.

SUBSTANCE: said geotechnological complex incorporates a trestle with a tumbling bucket, a tumbling module with a chute located inside the closed loop of trench for disintegrated rock accumulation. The chute is directed along the rock inflow. The tumbling bucket installation provides for possibility of linear and angular displacement in the vertical plane; the bucket has slots and L-shaped rippers.

EFFECT: improved efficiency of mining due to intensification of disintegration of rock with complex physical and mechanical properties during dredging and placer mining.

5 dwg

FIELD: mining industry, possible use during extraction of natural and man-made gravel deposits of both mineral resources of high density (gold, platinum, etc), and valued minerals of low density.

SUBSTANCE: method for softening and disintegration of argillaceous sands of gravel deposits includes driving a water-feeding trench, driving a water-collecting trench in 80-100 meters along direction of fall of deposit bed in parallel to water-feeding trench, depth of water-collecting trench providing for difference of bottom levels in trenches 1,5-3 meters, filling water-feeding trench with water and recharging it to maintain constant water level by means of gate and spillway with raised spillway gate, building walling dam 1-1,5 meters high, limiting the part of deposit being processed in plan, with spillway, after that outputs of filtration flow into water-collecting trench are constructed which are fixed by wetting of upper slope for height of 1-2 meters, then spillway gate is lowered onto spillway spine, and that part of deposit is flooded with water for depth of 0,8-1,3 meters and this level is maintained for initial softening of argillaceous sands of gravel deposits, after that dredger plant is assembled, consisting of suck-in line with suction device, dredger itself and force sludge duct. At the end of force sludge duct, vortex generator is mounted together with hydrodynamic cavitator, due to which during launch of operation of dredger plant argillaceous sands of gravel deposits along the way from face and suction device of dredger to hydrodynamic cavitator are subjected to second stage of softening and disintegration, and in hydrodynamic cavitator - to third-stage final disintegration, and then are dispatched to dressing plant.

EFFECT: increased productiveness and extraction efficiency during extraction of natural and man-made gravel deposits due to efficient softening and disintegration of argillaceous sands of gravel deposits and release of valued components during hydro-transportation of sands to dressing equipment.

2 dwg

FIELD: agricultural; devices for treatment.

SUBSTANCE: the invention is pertaining to the field of clarification of water at the industrial development of the placer deposits with utilization of the wastes of the timber loggings and extraction of the finely dispersed gold from the water runoffs of the gold mining. In the bed of the diversion channel they form the firebreak out of the filtering material containing the wood sawdust mass subjected to the preliminary sorting at the vibration installation and having the ratio of the fractions from 1 to 5 mm up to the fraction from 5 up to 15 mm as 1:3 and packaged in the netted forms made out of the wire skeleton. After the water clarification the wood sawdust mass is subjected to dehydration by pressing and to drying and incineration for extraction of the fine fractions of gold. The technical result of the invention is the increased efficiency of the water clarification and extraction of gold.

EFFECT: the invention ensures the increased efficiency of the water clarification and extraction of gold.

1 dwg

FIELD: mining industry.

SUBSTANCE: device has screw, having transporting spiral ribbon held on the shaft. Equipment is provided with U-shaped chute and perforated drum with armature in form of screw ribbon, having curvilinear shape in cross-section, arched in the direction of movement. Drum is mounted in upper portion of U-shaped chute. In its lower portion a screw is mounted.

EFFECT: higher productiveness.

3 dwg

Up!