Double-groove type automatic ore washing concentrator and ore dressing process thereof

Abstract

The invention belongs to the technical field of ore washing and beneficiation, and particularly relates to a double-groove type automatic ore washing and beneficiation machine and a beneficiation process thereof.The ore washing and beneficiation machine comprises a semi-cylindrical ore washing groove, an auger is rotationally installed in the ore washing groove in the axial direction, and the ore washing and beneficiation machine further comprises a first spraying head, a beneficiation groove and a material receiving sliding table; arc-shaped rods connected with the ore washing tank are fixed to the two sides of the first spray head, the position, away from the first spray head, of the lower wall of the ore washing tank communicates with a feeding sliding way, and the two ore dressing tanks are arranged below the feeding sliding way in an inverted-V shape. The process comprises the steps 1-7, coarse materials are automatically fed, double-groove automatic ore washing and beneficiation are carried out, screening is carried out in three times in the process, and the stirring effect on the coarse ore with tips is achieved. According to the double-groove continuous ore washing and separating device, stirring and screening after coarse ore washing are both considered, the stirring effect on coarse ore with tips is achieved, and clamped coarse ore is automatically discharged in a three-stage gradient mode, so that double-groove continuous ore washing and separating are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of ore washing and beneficiation, and in particular relates to a double-trough automatic ore washing and beneficiation machine and a beneficiation process thereof. Background Art

[0002] Trough-type ore washers generally process ores with a mud content of more than 20%, and mainly use the stirring and scrubbing of spiral stirring blades to separate the ore from the mud. In particular, the mud in the muddy mineral raw materials is sticky after being wetted, which is easy to block the crushing and screening equipment, and is mainly removed by water washing. After washing, the ore is beneficiated according to the diameter and divided into several categories of different sizes.

[0003] In order to facilitate the feeding of ores of different diameters into the roller crusher, the ores are washed out by the trough ore washer and put into the ore concentrator for preliminary selection. The separation of ore washing and ore concentrator makes the continuity of ore processing insufficient. More and more manufacturers choose to sort the ore at the discharge port of the ore washer, and discharge the ore separately through the discharge ports of different opening sizes.

[0004] During the ore washing stage, the ore is pushed forward against the water flow by the action of the auger and enters three downstream feed hoppers with increasing opening sizes. Although ores of different diameters are separated, some ore tips are inserted into the feed ports and cause jamming, which not only hinders the ore dressing process but also blocks the auger, which generally requires shutdown for cleaning, greatly reducing the continuity of ore washing and beneficiation. Summary of the invention

[0005] The purpose of the present invention is to provide a double-trough automatic ore washing and beneficiation machine and its beneficiation process, which takes into account the turning and screening of the coarse ore after water washing, plays a role in moving the coarse ore with sharp edges, and realizes the automatic discharge of the stuck coarse ore in three levels of gradient, so as to achieve continuous double-trough ore washing and beneficiation.

[0006] The technical solution adopted by the present invention is as follows: A double-trough automatic ore washing and concentrator comprises a semi-cylindrical ore washing trough, an auger is axially rotatably installed inside the ore washing trough, and further comprises: A first nozzle, the first nozzle is arranged toward the ore-washing trough, arc-shaped rods connected to the ore-washing trough are fixed on both sides of the first nozzle, and a feeding slideway is connected to a position of the lower wall of the ore-washing trough away from the first nozzle; A ore dressing trough, wherein the two ore dressing troughs are arranged in an inverted "V" shape below the feeding chute, and the lower surfaces of the two ore dressing troughs are provided with a first through hole, a second through hole and a third through hole in sequence from top to bottom, and the first ore dressing rollers are rotatably installed inside the two first through holes, the second ore dressing rollers are rotatably installed inside the two second through holes, and the third ore dressing rollers are rotatably installed inside the two third through holes; A receiving slide, six of which are spaced apart and distributed below the ore dressing tank, one end of each receiving slide being obliquely upwardly fixed with a baffle, and the other end being obliquely downwardly away from the ore washing tank; At startup, the coarse ore that has been cleaned once is sent into the two beneficiation troughs through the primary stage, the intermediate stage and the final stage. At this time, the first beneficiation roller, the second beneficiation roller and the third beneficiation roller are controlled to successively receive three batches of coarse ore with increasing diameters and pass through the first through hole, the second through hole and the third through hole respectively, so that they can be screened three times. Then, the receiving slide and the baffle are used to receive and separate them and slide down separately. The washing trough and the beneficiation trough carry out ore washing and beneficiation simultaneously. At the same time, the first beneficiation roller, the second beneficiation roller and the third beneficiation roller push those coarse ores that cannot be received obliquely upward respectively, so that these coarse ores roll downstream, taking into account the turning and screening of the coarse ore after water washing, and playing a toggling role on the coarse ore with sharp tips, so as to realize the automatic discharge of the stuck coarse ore in three levels of gradient and the independent collection of tailings, so as to achieve continuous ore washing and beneficiation in the double troughs.

[0007] The outside of the ore washing trough is provided with a first motor, a second nozzle and a metal mesh in sequence from top to bottom. The output end of the first motor extends into the ore washing trough and is fixedly connected to the shaft of the auger. The water outlet of the second nozzle faces below the feeding chute. The metal mesh is fixed in an arc shape between the upper ends of the two ore dressing troughs. The metal mesh is used to carry the ore sprayed and flushed by the second nozzle. After the first motor is started, the auger is rotated at a lower transmission ratio differential speed, so that the spiral blades push the coarse ore to slide on the ore washing trough until it slides out of the feeding chute and is received by the curved metal mesh. The second nozzle is opened to spray clean water on the coarse ore for secondary cleaning. The muddy water falls through the mesh holes of the metal mesh and is separated from the coarse ore, thereby realizing secondary cleaning of the coarse ore. The impact of the clean water accelerates the rolling of the coarse ore to both sides of the metal mesh, promotes the coarse ore to enter the two ore dressing troughs, and separates the water flow from the first through hole, the second through hole and the third through hole.

[0008] A flange plate is fixed between the upper edges of the two mineral processing troughs, and the upper surface of the flange plate is detachably connected to the lower surface of the first motor. A hard pipe is installed running through the inside of the flange plate, and the lower end of the hard pipe is connected to a spray water pump, and the upper end extends to the top of the feeding slide and is closed. The inside of the hard pipe is connected to the water inlet of the second nozzle, and the first motor and the hard pipe are supported upward by the flange plate to facilitate the suspension of the second nozzle. The spray water pump is started to suck water, and water can be supplied to the three second nozzles along the hard pipe.

[0009] Three second motors are fixed on one side of the two ore dressing troughs away from the ore washing trough, and the three second motors are respectively used to drive the first ore dressing roller, the second ore dressing roller and the third ore dressing roller, the surfaces of the two first ore dressing rollers are provided with a first material trough, the surfaces of the two second ore dressing rollers are provided with a second material trough, and the surfaces of the two third ore dressing rollers are provided with a third material trough, and the inside of the first material trough, the inside of the second material trough and the inside of the third material trough are all provided with inclined surfaces, and the inclined surfaces are used to move the ore out of the first through hole, the second through hole and the third through hole respectively when rotating. The first through hole and the third through hole are used for automatic discharge. When the second motor is working, the first dressing roller, the second dressing roller and the third dressing roller rotate the first material trough, the second material trough and the third material trough respectively, and the ores with increasing diameters fall into the first material trough, the second material trough and the third material trough in turn, cross the first through hole, the second through hole and the third through hole as they rotate, reach the bottom of the dressing trough, and then fall off and onto the receiving slide. The ores that cannot cross are pushed by the adjacent inclined surfaces to flip upward obliquely and roll to the bottom of the dressing trough, thereby realizing the automatic discharge of the stuck coarse ore in three levels of gradient.

[0010] A flushing water pump for supplying water to the first nozzle is arranged outside the ore washing trough, and a hose is connected between the output end of the flushing water pump and the water inlet of the first nozzle. After the flushing water pump is started, it draws clean water from the water source and transports it to the first nozzle along the hose. At the same time, the hose can buffer the vibration caused by the collision between the auger and the coarse ore, which is conducive to isolating the flushing water pump from such vibration.

[0011] A plurality of bridge frames are welded at intervals on the lower surface of the metal mesh, and two ends of the bridge frames extend toward both sides along the inclined surface of the metal mesh respectively. Cross braces are fixed between the lower surfaces of the bridge frames, and the metal mesh is supported upward at multiple points by the bridge frames and the cross braces, so that the upper limit of the coarse ore bearing capacity of the metal mesh is increased, and the flow of muddy water will not be hindered, and the mesh is far away from the first through hole, the second through hole and the third through hole to avoid hindering the screening of the coarse ore.

[0012] A feed hopper is arranged just above the ore washing trough, and the ore put into the feed hopper is lifted along the inner wall of the ore washing trough by an auger. A mud and water trough is fixed at the lower edge of the ore washing trough, and the coarse material first falls into the feed hopper for concentration, and then falls into the ore washing trough. The coarse material is concentrated by the wide-mouthed feed hopper to reduce the flying coarse material, so that the coarse material is concentrated in the ore washing trough and soaked in water, and the washed mud and water gradually overflow, is collected by the mud and water trough, and then flows downward into the wastewater treatment pool to be purified by flocculation and sedimentation.

[0013] Water blocking plates are fixed on the upper surface of the ore washing trough at both sides of the mud and water trough, and the upper ends of the two water blocking plates extend obliquely upward toward both sides of the ore washing trough respectively, and square steel pipes are fixed between the upper surfaces of the two water blocking plates and both sides of the feed hopper. When mud and water overflow, the two water blocking plates are used to limit the flow on both sides of the mud and water trough, and the feed hopper is supported by the square steel pipe to be suspended in the air to prevent the feed hopper from blocking the overflow, so that the overflow is concentrated in the mud and water trough.

[0014] A main column is fixed on the lower surface of the ore washing trough, and a secondary column fixedly connected to the material receiving slide is fixed on the lower surface of the ore dressing trough.

[0015] A double-trough automatic ore washing and concentrator ore dressing process comprises the following steps: Step 1: The excavated stones are sent to the jaw crusher to be broken into coarse blocks of different sizes, and then sprayed with water to reduce dust; Step 2: Use the conveyor belt to pour the coarse material into the ore washing tank, continue to spray clean water, continue the first washing, and wash off the mud; Step 3: The first motor rotates the auger in the washing tank forward, stirring the coarse materials to rub against each other and peel off the soil, exposing the coarse ore, and pushing the coarse ore to move upward along the inner wall of the washing tank until the coarse ore falls into the feeding chute, and the wastewater mixed with the soil overflows and is discharged; Step 4: The coarse ore rolls down into the two dressing troughs. At this time, the first, second and third dressing rollers are controlled to rotate in one direction, and the coarse ore with increasing diameter is caught in turn and falls into the first, second and third troughs respectively, and can be screened three times; Step 5: At the same time, the inclined surfaces of the first, second and third dressing rollers push the coarse ores that cannot be caught upward, so that the coarse ores roll downstream, taking into account the turning and screening of the coarse ores after washing; Step 6: The selected ore is divided into fine ore, medium ore and large ore from top to bottom, and separated and slid down separately; Step 7: Finally, the fine ore, medium ore, large ore and tailings fall onto different conveyor belts and are transported downstream to different roller crushers to be broken into particles.

[0016] The technical effects achieved by the present invention are: The present invention sends the cleaned coarse ore into two dressing troughs through the primary stage, the intermediate stage and the final stage. At this time, the first dressing roller, the second dressing roller and the third dressing roller are controlled to receive three batches of coarse ore with increasing diameters in turn and pass through the first through hole, the second through hole and the third through hole respectively, so that they can be screened three times. Then, the receiving slide is used to cooperate with the baffle to receive and separate them and slide down respectively. The washing trough and the dressing trough carry out ore washing and ore dressing synchronously. At the same time, the first dressing roller, the second dressing roller and the third dressing roller respectively push those coarse ores that cannot be received obliquely upward, so that these coarse ores roll downstream, taking into account the turning and screening of the coarse ore after water washing, and playing a toggling role on the coarse ore with sharp ends, so as to realize the automatic discharge of the stuck coarse ore in three levels of gradient and the independent collection of tailings, so as to achieve continuous ore washing and ore dressing in the double troughs.

[0017] After the first motor of the present invention is started, the auger is rotated at a relatively low transmission ratio differential speed, so that the spiral blades push the coarse ore to slide on the ore washing trough until it slides out from the feeding chute and is received by the metal mesh with an arc, and the second nozzle is opened to spray clean water toward the coarse ore for secondary cleaning. The muddy water falls through the mesh holes of the metal mesh and is separated from the coarse ore, thereby realizing the secondary cleaning of the coarse ore. The impact of the clean water accelerates the rolling of the coarse ore toward both sides of the metal mesh, promotes the coarse ore to enter the two ore dressing troughs, and separates the water flow from the first through hole, the second through hole and the third through hole.

[0018] When the second motor of the present invention is working, the first beneficiation roller, the second beneficiation roller and the third beneficiation roller rotate the first material trough, the second material trough and the third material trough respectively, and the ores with increasing diameters fall into the first material trough, the second material trough and the third material trough in turn, cross the first through hole, the second through hole and the third through hole as they rotate, reach the bottom of the beneficiation trough, and then break away and fall onto the receiving slide. The ores that cannot cross are pushed by the adjacent inclined surfaces to flip upward obliquely and roll to the bottom of the beneficiation trough, thereby realizing the automatic discharge of the stuck coarse ore in three levels of gradient.

[0019] The present invention, through steps one to seven, starts with the automatic input of coarse materials, and then goes through double-trough automatic ore washing and ore selection, and screens three times in the process, which has a toggling effect on the coarse ores with sharp edges, and realizes the automatic discharge of the stuck coarse ores in three levels of gradient, as well as the independent collection of tailings. The fine ore, medium ore, large ore and tailings after sorting are transported independently without interfering with each other. While saving manual labor, the whole machine has good smoothness of operation and is not prone to jamming, which greatly reduces the frequency of maintenance by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of a double-trough automatic ore washing and concentrator in the first embodiment of the present invention; Figure 2 is a side view of the ore washing tank in the first embodiment of the present invention; Figure 3 It is a front view of two ore dressing tanks in the first embodiment of the present invention; Figure 4 It is a bottom view of two ore dressing tanks in the first embodiment of the present invention; Figure 5 is a side view of the material receiving slide in the first embodiment of the present invention; Figure 6 is a front view of the flange plate in the first embodiment of the present invention; Figure 7 It is a front view of the first mineral separation roller in the first embodiment of the present invention; Figure 8 is a front view of the second mineral separation roller in the first embodiment of the present invention; Fig. 9 It is a front view of the third mineral separation roller in the first embodiment of the present invention; Fig.10 It is a flow chart of a ore dressing process of a double-trough automatic ore washing and concentrator in Embodiment 2 of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Ore-washing trough; 2. Auger; 3. First nozzle; 301. Arc rod; 302. Feeding chute; 4. Ore-dressing trough; 401. First ore-dressing roller; 402. Second ore-dressing roller; 403. Third ore-dressing roller; 404. First material trough; 405. Second material trough; 406. Third material trough; 5. Material receiving slide; 501. Baffle; 6. First motor; 7. Second nozzle; 8. Metal mesh; 9. Flange plate; 10. Hard pipe; 11. Spray water pump; 12. Second motor; 13. First through hole; 14. Second through hole; 15. Third through hole; 16. Hose; 17. Flushing water pump; 18. Bridge; 19. Cross brace; 20. Feed hopper; 21. Mud and water trough; 22. Water blocking plate; 23. Diagonal brace; 24. Main column; 25. Secondary column. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0023] Molybdenum is an important additive for producing alloy steel, which can be used to manufacture transportation equipment, locomotives, industrial machinery and various instruments. Stainless steel containing molybdenum is used to produce precision chemical instruments and equipment used in seawater environments. High-speed steel contains 4% to 9.5% molybdenum and can be used to manufacture high-speed cutting tools. As the demand for molybdenum increases year by year, molybdenum mining is also expanding year by year. The efficiency of manual production is low, so we have made improvements to the traditional automatic ore washing and beneficiation equipment, and given the process steps for the equipment to beneficiate, and carried out ore washing and beneficiation simultaneously, taking into account the turning and screening of the ore after washing, and playing a toggling role on the ore with sharp edges, so as to realize the automatic discharge of the stuck ore in gradients, so as to make the double-trough continuous ore washing and beneficiation.

[0024] Embodiment 1: like Figure 1-9 As shown, a double-trough automatic ore washing and concentrator comprises a semi-cylindrical ore washing trough 1, which is inclined relative to the ground, and an auger 2 is axially rotatably installed inside the ore washing trough 1, the auger 2 is welded by a shaft and a spiral blade, and both ends of the shaft are rotatably installed inside the ore washing trough 1 through bearings, and also comprises: The first nozzle 3 is arranged downward above the lower end of the ore-washing trough 1, and arc rods 301 connected to the ore-washing trough 1 are fixed on both sides of the first nozzle 3. The number of arc rods 301 on each side is set to two, and a feeding chute 302 is connected to the lower wall of the ore-washing trough 1 away from the first nozzle 3.

[0025] The two dressing troughs 4 are arranged in an inverted "V" shape below the feeding chute 302. The lower surfaces of the two dressing troughs 4 are sequentially opened with a first through hole 13, a second through hole 14 and a third through hole 15 from top to bottom. The first dressing rollers 401 are rotatably installed inside the two first through holes 13. The upper surface of the first dressing roller 401 extends into the dressing trough 4 through the first through holes 13. The second dressing rollers 402 are rotatably installed inside the two second through holes 14. The upper surface of the second dressing roller 402 extends into the dressing trough 4 through the second through holes 14. The third dressing rollers 403 are rotatably installed inside the two third through holes 15. The upper surface of the third dressing roller 403 extends into the dressing trough 4 through the second through holes 14. The first dressing roller 401, the second dressing roller 402 and the third dressing roller 403 are all electrically driven and rotate unidirectionally in the dressing trough 4.

[0026] The receiving slide 5, six receiving slides 5 are distributed at intervals below the ore dressing trough 4, and a baffle 501 is fixed obliquely upward at one end of the receiving slide 5. The receiving slide 5 and the baffle 501 are both coated with fiberglass with good wear resistance, and the other end is obliquely downward away from the ore washing trough 1 and connected to the unloading conveyor belt, so that the ore on the receiving slide 5 slides directly onto the belt of the unloading conveyor belt.

[0027] In the initial stage, the excavated stones are sent to the jaw crusher and broken into coarse blocks of different sizes. These coarse materials are mixed with some impurities such as soil and need to be cleaned before being put into the roller crusher. While crushing, water can be sprayed to reduce dust and clean water can be used to take away some of the soil.

[0028] In the intermediate stage, the coarse material on the conveyor belt is poured into the ore washing trough 1, and clean water is continuously sprayed toward the ore washing trough 1 through the first nozzle 3 on the arc rod 301. At the same time, the auger 2 is rotated forward, and the spiral blades stir the coarse material to rub against each other and peel off the soil, exposing the coarse ore, and push the coarse ore to move upward along the inner wall of the ore washing trough 1 until the coarse ore falls into the feeding chute 302, and the waste water mixed with the soil gathers at the lower end of the ore washing trough 1 and is slowly discharged by overflow.

[0029] Until the coarse ore falls to the highest point between the two beneficiation troughs 4, and then rolls toward the inside of the two beneficiation troughs 4, at this time, the first beneficiation roller 401, the second beneficiation roller 402 and the third beneficiation roller 403 are controlled to rotate unidirectionally downward from the upper surface, and three batches of coarse ore with increasing diameters are successively received and respectively pass through the first through hole 13, the second through hole 14 and the third through hole 15, and can be screened three times. The selected ore is divided into fine ore, medium ore and large ore from top to bottom, and then the receiving slide 5 is used to cooperate with the stop The plate 501 receives and separates them and slides down separately. The washing trough 1 and the dressing trough 4 carry out washing and dressing simultaneously. At the same time, the first dressing roller 401, the second dressing roller 402 and the third dressing roller 403 push the coarse ores that cannot be caught upwards, respectively, so that these coarse ores roll downstream, taking into account the turning and screening of the coarse ores after washing, and playing a role in moving the coarse ores with sharp tips, so as to realize the automatic discharge of the stuck coarse ores in three levels of gradient and the independent collection of tailings, so as to achieve continuous washing and dressing of the double troughs.

[0030] Among them, the first beneficiation roller 401, the second beneficiation roller 402 and the third beneficiation roller 403 divide the inside of the beneficiation trough 4 into four areas, which are used for buffering ores of different diameters and have a certain relative independence, so that the three screenings do not interfere with each other.

[0031] In the final stage, fine ore, medium ore, large ore and tailings fall onto different conveyor belts and are transported downstream to different roller crushers to be crushed into granular ore for later use. For the subsequent screening of these granular ores, this embodiment preferably uses a spiral chute with water for sorting.

[0032] See attached Figure 1 , Figure 3 and Figure 4 The outside of the ore washing trough 1 is provided with a first motor 6, a second nozzle 7 and a metal mesh 8 in sequence from top to bottom. The first motor 6 can be a YEJ three-phase asynchronous motor. The output end of the first motor 6 extends into the ore washing trough 1 and is fixedly connected to the shaft of the auger 2. The water outlet of the second nozzle 7 faces the bottom of the feeding chute 302. In this embodiment, three second nozzles 7 are preferably used. The spraying area is larger and covers more coarse ore as much as possible. The metal mesh 8 is arc-shaped and fixed between the upper ends of the two ore dressing troughs 4 by countersunk screws. The metal mesh 8 is used to carry the ore washed by the second nozzle 7. After the motor 6 is started, it rotates the auger 2 at a lower transmission ratio differential, so that the spiral blades push the coarse ore to slide on the ore washing trough 1 until it slides out from the feeding chute 302 and is received by the curved metal mesh 8. The second nozzle 7 is opened to spray clean water on the coarse ore for secondary cleaning. The muddy water falls through the mesh holes of the metal mesh 8 and is separated from the coarse ore, thereby achieving secondary cleaning of the coarse ore. The impact of the clean water accelerates the coarse ore to roll toward both sides of the metal mesh 8, promotes the coarse ore to enter the two beneficiation troughs 4, and separates the water flow from the first through hole 13, the second through hole 14 and the third through hole 15.

[0033] See attached Figure 3 and Figure 6 A flange plate 9 is fixed between the upper edges of the two beneficiation troughs 4 by bolts. The upper surface of the flange plate 9 is detachably connected to the lower surface of the first motor 6. Bolts or buckles can be set on the flange plate 9 to fix the first motor 6. In this embodiment, the bolt fixing method is preferred. The bolts can be unscrewed during maintenance to facilitate the disassembly of the first motor 6. A hard pipe 10 is installed through the flange plate 9. The lower end of the hard pipe 10 is connected to a spray water pump 11, and the upper end extends to the top of the feeding slide 302 and is closed. The bottom of the spray water pump 11 is grounded, and the water inlet is connected to the water source. The inside of the hard pipe 10 is connected to the water inlet of the second nozzle 7. The first motor 6 and the hard pipe 10 are supported upward by the flange plate 9, which facilitates the suspension of the second nozzle 7. The spray water pump 11 is started to suck water from the water source, and water can be supplied to the three second nozzles 7 along the hard pipe 10.

[0034] Refer to the attached Figure 7 , Figure 8 and Fig. 9 , three second motors 12 are fixed on the side of the two beneficiation troughs 4 away from the washing trough 1, and the second motors 12 can be selected from YEJ three-phase asynchronous motors. The second motors 12 are supported by a frame outside, and the frame is grounded. The three second motors 12 are used to drive the first beneficiation roller 401, the second beneficiation roller 402 and the third beneficiation roller 403 respectively. The surfaces of the two first beneficiation rollers 401 are provided with first material troughs 404, and seven groups of first material troughs 404 are distributed along the axial direction of the first beneficiation rollers 401 at intervals, and the number of each group of first material troughs 404 is six. The surfaces of the two second beneficiation rollers 402 are provided with second material troughs 405, and six groups of second material troughs 405 are distributed along the axial direction of the second beneficiation rollers 402 at intervals, and the number of each group of second material troughs 405 is five. The surfaces of the two third beneficiation rollers 403 are provided with third material troughs 406, and five groups of third material troughs 406 are distributed along the axial direction of the first beneficiation rollers 401. The three dressing rollers 403 are axially spaced and arranged, and the number of the third material troughs 406 in each group is four. The inside of the first material trough 404, the inside of the second material trough 405 and the inside of the third material trough 406 on the side facing the upstream of the coarse ore are all provided with inclined surfaces for moving the ore. When the second motor 12 is working, the first dressing roller 401, the second dressing roller 402 and the third dressing roller 403 rotate the first material trough 404, the second material trough 405 and the third material trough 406 respectively, and the ores with increasing diameters fall into the first material trough 404, the second material trough 405 and the third material trough 406 in turn, and cross the first through hole 13, the second through hole 14 and the third through hole 15 as they rotate, and then fall off to the receiving slide 5 when they reach the bottom of the dressing trough 4. The ores that cannot cross are pushed by the adjacent inclined surfaces to flip obliquely upward and roll to the bottom of the dressing trough 4, so as to realize the automatic discharge of the stuck coarse ore in three levels of gradient.

[0035] Further, the lower edges of the two first through holes 13 are fixed with a first high manganese alloy shovel by bolts, the lower edges of the two second through holes 14 are fixed with a second high manganese alloy shovel by bolts, and the lower edges of the two third through holes 15 are fixed with a third high manganese alloy shovel by bolts. The lengths of the first high manganese alloy shovel, the second high manganese alloy shovel and the third high manganese alloy shovel are all 2 cm, which can avoid the first mineral processing roller 401, the second mineral processing roller 402 and the third mineral processing roller 403. The upper edges of the first high manganese alloy shovel, the second high manganese alloy shovel and the third high manganese alloy shovel are serrated. , which is convenient for contacting the ore at multiple points, the first high manganese alloy shovel, the second high manganese alloy shovel and the third high manganese alloy shovel all have a large inclination angle relative to the inclined plane, and the preferred inclination angle in this embodiment is 100°. When contacting the stuck ore, the first high manganese alloy shovel, the second high manganese alloy shovel and the third high manganese alloy shovel respectively press against these ores obliquely to make them rise along the inclined plane, and the ore falling into the first trough 404, the second trough 405 and the third trough 406 will avoid the first high manganese alloy shovel, the second high manganese alloy shovel and the third high manganese alloy shovel, taking into account both screening and automatic discharge of stuck ore.

[0036] Refer to the attached Figure 1 and Figure 2 A flushing water pump 17 for supplying water to the first nozzle 3 is arranged outside the ore washing trough 1. The bottom of the flushing water pump 17 is grounded by bolts. A hose 16 is connected between the output end of the flushing water pump 17 and the water inlet of the first nozzle 3. After the flushing water pump 17 is started, it sucks clean water from the water source and transports it to the first nozzle 3 along the hose 16. At the same time, the hose 16 can buffer the vibration caused by the collision of the auger 2 with the coarse ore, which is conducive to isolating the flushing water pump 17 from such vibration.

[0037] Among them, the first motor 6, the spray water pump 11, the second motor 12 and the flushing water pump 17 are all connected to the industrial computer of the processing station by signal, and automatically run under the control of the preset program to realize double-slot automatic ore washing and beneficiation, which greatly reduces physical labor.

[0038] Refer to the attached Figure 1 , Figure 3 and Figure 4 A plurality of bridge frames 18 are welded at intervals on the lower surface of the metal mesh 8, and the number of the bridge frames 18 is set to three to eight. Firstly, the structural strength of three bridge frames 18 is relatively low, and the structural strength of eight bridge frames 18 is high, but it is easy to hinder the water from leaking down. In this embodiment, the preferred number of bridge frames 18 is five, which has good supporting strength while leaving a sufficiently large spacing for water leakage. The two ends of the bridge frames 18 extend toward both sides along the inclined surface of the metal mesh 8 respectively, and a cross brace 19 is fixed between the lower surfaces of the bridge frames 18. In this embodiment, the preferred number of the cross braces 19 is five, and the metal mesh 8 is supported upward at multiple points by the bridge frames 18 and the cross braces 19, so that the upper limit of the coarse ore bearing of the metal mesh 8 is increased, and it will not hinder the flow of muddy water, and it is far away from the first through hole 13, the second through hole 14 and the third through hole 15, so as to avoid hindering the screening of coarse ore.

[0039] Refer to the attached Figure 1 and Figure 2 A feed hopper 20 is arranged just above the ore washing trough 1. The ore put into the feed hopper 20 is lifted along the inner wall of the ore washing trough 1 by the auger 2. A mud and water trough 21 is fixed at the lower edge of the ore washing trough 1. A wastewater outlet is provided at the lower edge of the mud and water trough 21 for connecting to the wastewater treatment tank. The coarse material first falls into the feed hopper 20 for concentration, and then falls into the ore washing trough 1. The coarse material is concentrated by the wide-mouthed feed hopper 20 to reduce the flying coarse material, so that the coarse material is concentrated in the ore washing trough 1 and soaked in water. The washed mud and water gradually overflow and are collected by the mud and water trough 21, and then flow downward into the wastewater treatment tank to be purified by flocculation and sedimentation.

[0040] Refer to the attached Figure 1 and Figure 2 Water blocking plates 22 are welded on the upper surface of the ore washing trough 1 at both sides of the mud and water trough 21. The upper ends of the two water blocking plates 22 extend obliquely upward toward both sides of the ore washing trough 1 respectively. Diagonal braces 23 are fixed between the upper surfaces of the two water blocking plates 22 and both sides of the feed hopper 20 by bolts. When mud and water overflow, the two water blocking plates 22 are used to limit the flow on both sides of the mud and water trough 21, and the diagonal braces 23 are used to support the feed hopper 20 to be suspended in the air to prevent the feed hopper 20 from blocking the overflow, so that the overflow is concentrated in the mud and water trough 21.

[0041] Refer to the attached Figure 1 , Figure 3 and Figure 5 A main column 24 is fixed to the lower surface of the ore washing trough 1 by bolts, one side of the main column 24 is fixedly connected to the one side of the ore dressing trough 4 by bolts, and a secondary column 25 fixedly connected to the material receiving slide 5 is fixed to the lower surface of the ore dressing trough 4 by bolts. Square steel pipes are welded to the outside of the secondary column 25, and these square steel pipes are fixedly connected to the lower surface of the material receiving slide 5 by bolts. The main column 24 and the secondary column 25 support the entire ore washing and concentrator suspended on the ground, leaving space for unloading materials.

[0042] Embodiment 2: In order to carry out ore washing and mineral processing simultaneously, and take into account the turning and screening of the ore after water washing, we use a conveyor belt to pour the coarse material after jaw crushing into the double-trough automatic ore washing and mineral processing machine in Example 1, which plays a role in stirring the ore with sharp edges, realizes the automatic discharge of the stuck ore in gradient, and realizes the double-trough automatic ore washing and mineral processing.

[0043] like Fig.10 As shown, a double-trough automatic ore washing and concentrator ore dressing process comprises the following steps: Step 1: The excavated stones are sent to the jaw crusher and broken into coarse blocks of different sizes. During the crushing process, water can be sprayed to reduce dust and clean water can be used to take away some of the soil; Step 2: Use a conveyor belt to pour the coarse material into the ore washing tank 1, and continuously spray clean water toward the ore washing tank 1 through the first nozzle 3 on the arc rod 301, and continue the first cleaning to wash away the soil; Step 3: The first motor 6 rotates forwardly the auger 2 in the ore-washing trough 1, and the spiral blades stir the coarse materials to rub against each other and peel off the soil, exposing the coarse ore, and push the coarse ore to move upward along the inner wall of the ore-washing trough 1 until the coarse ore falls into the feeding chute 302, and the waste water mixed with the soil gathers at the lower end of the ore-washing trough 1 and is slowly discharged by overflow; Step 4: The coarse ore falls to the highest point between the two beneficiation troughs 4, and then rolls toward the inside of the two beneficiation troughs 4. At this time, the first beneficiation roller 401, the second beneficiation roller 402 and the third beneficiation roller 403 are controlled to rotate unidirectionally downward from the upper surface, and three batches of coarse ore with increasing diameters are sequentially received and passed through the first through hole 13, the second through hole 14 and the third through hole 15 respectively; Among them, the ores with increasing diameters fall into the first trough 404, the second trough 405, and the third trough 406 in sequence, and can be screened three times, and the washing trough 1 and the beneficiation trough 4 are simultaneously washed and beneficiated; Step 5: At the same time, the inclined surfaces of the first beneficiation roller 401, the second beneficiation roller 402 and the third beneficiation roller 403 push the coarse ores that cannot be caught upward, so that the coarse ores roll downstream, taking into account the turning and screening of the coarse ores after washing, and playing a role in moving the coarse ores with sharp tips, so as to realize the automatic discharge of the stuck coarse ores in three levels of gradient and the independent collection of tailings, so as to achieve continuous washing and beneficiation of the double troughs; Step 6: The selected ore is divided into fine ore, medium ore and large ore from top to bottom, and then received by the receiving slide 5 in cooperation with the baffle 501, separated and slid down separately; Step 7: Finally, the fine ore, medium ore, large ore and tailings fall onto different conveyor belts and are transported downstream to different double-roll crushers, where they are all crushed into granular ore for later use.

[0044] In summary, through steps one to seven, from the automatic input of coarse materials, to the automatic ore washing and beneficiation in the double troughs, and screening in three times during the process, the coarse ores with sharp edges are activated, and the stuck coarse ores are automatically discharged in three levels of gradients, as well as the independent collection of tailings. The fine ore, medium ore, large ore and tailings after sorting are transported independently without interfering with each other. While saving manual labor, the whole machine operates smoothly and is not prone to jamming, which greatly reduces the frequency of maintenance by staff.

[0045] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A double-trough automatic ore washing and concentrator, comprising a semi-cylindrical ore washing trough (1), wherein an auger (2) is axially rotatably mounted inside the ore washing trough (1), characterized in that: Also includes: A first nozzle (3), the first nozzle (3) being arranged toward the ore-washing trough (1), arc-shaped rods (301) connected to the ore-washing trough (1) being fixed on both sides of the first nozzle (3), and a feeding slideway (302) being connected to a position of the lower wall of the ore-washing trough (1) away from the first nozzle (3); A ore dressing trough (4), wherein the two ore dressing troughs (4) are arranged in an inverted "V" shape below the feeding chute (302), and the lower surfaces of the two ore dressing troughs (4) are provided with a first through hole (13), a second through hole (14) and a third through hole (15) in sequence from top to bottom, and a first ore dressing roller (401) is rotatably mounted inside the two first through holes (13), a second ore dressing roller (402) is rotatably mounted inside the two second through holes (14), and a third ore dressing roller (403) is rotatably mounted inside the two third through holes (15); A material receiving slide (5), six of the material receiving slides (5) are spaced apart and distributed below the ore dressing trough (4), one end of each of the material receiving slides (5) is fixed with a baffle (501) obliquely upward, and the other end is obliquely downward away from the ore washing trough (1); When started, the ore washing trough (1) and the ore dressing trough (4) are simultaneously washing and dressing, taking into account the turning and screening of the ore after washing, and playing a role in moving the ore with sharp edges, so as to realize the automatic discharge of the stuck ore in different gradients, so as to achieve continuous ore washing and dressing in the double troughs.

2. A double-trough automatic ore washing and concentrator according to claim 1, characterized in that: The outside of the ore washing trough (1) is provided with a first motor (6), a second nozzle (7) and a metal mesh (8) in order from top to bottom. The output end of the first motor (6) extends into the ore washing trough (1) and is fixedly connected to the shaft of the auger (2). The water outlet of the second nozzle (7) faces below the feeding chute (302). The metal mesh (8) is fixed in an arc shape between the upper ends of the two ore dressing troughs (4). The metal mesh (8) is used to carry the ore washed by the second nozzle (7) spraying water.

3. A double-trough automatic ore washing and concentrator according to claim 2, characterized in that: A flange plate (9) is fixed between the upper edges of the two ore dressing troughs (4), the upper surface of the flange plate (9) is detachably connected to the lower surface of the first motor (6), a hard pipe (10) is installed through the inside of the flange plate (9), the lower end of the hard pipe (10) is connected to a spray water pump (11), the upper end extends to the top of the feeding slide (302) and is closed, and the inside of the hard pipe (10) is connected to the water inlet of the second nozzle (7).

4. A double-trough automatic ore washing and concentrator according to claim 1, characterized in that: Three second motors (12) are fixed on one side of the two ore dressing troughs (4) away from the ore washing trough (1), and the three second motors (12) are used to drive the first ore dressing roller (401), the second ore dressing roller (402) and the third ore dressing roller (403) respectively. The surfaces of the two first ore dressing rollers (401) are provided with a first material trough (404), the surfaces of the two second ore dressing rollers (402) are provided with a second material trough (405), and the surfaces of the two third ore dressing rollers (403) are provided with a third material trough (406). The inside of the first material trough (404), the inside of the second material trough (405) and the inside of the third material trough (406) are all provided with inclined surfaces, and when the inclined surfaces rotate, they are used to move the ore to separate from the first through hole (13), the second through hole (14) and the third through hole (15) respectively to achieve automatic discharge.

5. A double-trough automatic ore washing and concentrator according to claim 1, characterized in that: A flushing water pump (17) for supplying water to the first nozzle (3) is arranged outside the ore washing tank (1), and a hose (16) is connected between the output end of the flushing water pump (17) and the water inlet of the first nozzle (3).

6. A double-trough automatic ore washing and concentrator according to claim 2, characterized in that: A plurality of bridge frames (18) are welded at intervals on the lower surface of the metal mesh (8), two ends of the bridge frames (18) respectively extend toward both sides along the inclined surface of the metal mesh (8), and cross braces (19) are fixed between the lower surfaces of the bridge frames (18).

7. A double-trough automatic ore washing and concentrator according to claim 1, characterized in that: A feed hopper (20) is arranged directly above the ore-washing trough (1), and the ore fed from the feed hopper (20) is lifted along the inner wall of the ore-washing trough (1) by means of an auger (2). A mud and water trough (21) is fixed to the lower edge of the ore-washing trough (1).

8. A double-trough automatic ore washing and concentrator according to claim 7, characterized in that: Water blocking plates (22) are fixed to the upper surface of the ore washing trough (1) at positions on both sides of the mud and water trough (21), the upper ends of the two water blocking plates (22) extend obliquely upward toward both sides of the ore washing trough (1), and oblique braces (23) are fixed between the upper surfaces of the two water blocking plates (22) and both sides of the feed hopper (20).

9. A double-trough automatic ore washing and concentrator according to claim 1, characterized in that: A main column (24) is fixed on the lower surface of the ore washing trough (1), and a secondary column (25) fixedly connected to the material receiving slide (5) is fixed on the lower surface of the ore dressing trough (4).

10. A double-trough automatic ore washing and concentrator ore dressing process, characterized in that: A double-trough automatic ore washing and concentrator applied to any one of claims 1 to 9, comprising the following steps: Step 1: The excavated stones are sent to the jaw crusher to be broken into coarse blocks of different sizes, and then sprayed with water to reduce dust; Step 2: Use a conveyor belt to pour the coarse material into the ore washing tank (1), and continue to spray clean water to continue the first washing to wash away the dirt; Step 3: The first motor (6) rotates the auger (2) in the ore-washing trough (1) forward, stirring the coarse materials to rub against each other and peel off the soil, exposing the coarse ore, and pushing the coarse ore to move upward along the inner wall of the ore-washing trough (1) until the coarse ore falls into the feeding chute (302), and the wastewater mixed with the soil overflows and is discharged; Step 4: The coarse ore rolls toward the inside of the two beneficiation troughs (4). At this time, the first beneficiation roller (401), the second beneficiation roller (402) and the third beneficiation roller (403) are controlled to rotate in one direction, and the coarse ore with increasing diameters is successively caught and falls into the first material trough (404), the second material trough (405) and the third material trough (406), and can be screened in three times; Step 5: At the same time, the inclined surfaces of the first beneficiation roller (401), the second beneficiation roller (402) and the third beneficiation roller (403) respectively push the coarse ores that cannot be caught upward, so that the coarse ores roll downstream, taking into account the turning and screening of the coarse ores after washing; Step 6: The selected ore is divided into fine ore, medium ore and large ore from top to bottom, and separated and slid down separately; Step 7: Finally, the fine ore, medium ore, large ore and tailings fall onto different conveyor belts and are transported downstream to different roller crushers to be broken into particles.

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