A double screw washing system for laterite nickel ore

Abstract

This application relates to a laterite nickel ore double screw washing system. It includes a double screw mining machine, a movable sieve and a conveyer belt. The double-screw ore washing machine has a slurry outlet. The slurry is derived from the slurry outlet. The movable sieve can drive the selected material to move from its feeding end to its discharging end. The conveyer belt is provided below the discharge end of the movable sieve: Ore is imported into the double screw washing machine. The double-screw ore washing machine scrubbed the ore material. The scrubbed slurry flows from the slurry outlet to the movable sieve. The movable sieve sieves the slurry, stops the scum in the slurry, and brings it down onto tbe conveyer belt. Via the conveyer belt, it is delivered to a designated location.

Description

[0001] Description

[0002] A DOUBLE SCREW WASHING SYSTEM FOR LATERITE NICKEL ORE

[0003] FILED OF DISCLOSURE

[0004] The present application relates to the technical field of laterite nickel ore , especially to a double spiral washing system of laterite nickel ore .

[0005] BACKGROUND

[0006] At present , in the hydrometallurgy process of laterite nickel ore , the cylinder washing machine and the double screw washing machine are generally used to clean the laterite nickel ore in turn, so as to select the large gravel and small gravel in the laterite nickel ore in turn, so as to facilitate the subsequent treatment of the pulp .

[0007] However, laterite nickel ore , besides containing gravel , also contains wood, grass scum, the existing cylinder washing machine and double spiral washing machine cannot screen the scum, so that scum with the ore pulp flows into the subsequent process , for example , scum is easy to make the reconcentration processing stage of the cyclone and spiral chute block, thus af fect the processing ef ficiency of the whole mineral processing .

[0008] SUMMARY

[0009] In view of this , it is necessary to provide a laterite nickel ore double screw washing system to solve the problem that the existing cylinder washing machine and double screw washing machine cannot screen the above scum, interfering with the normal operation of the equipment , thus af fecting the treatment e f ficiency of the whole mineral processing .

[0010] The present application provides a laterite nickel ore double screw washing system, including a double screw mining machine , a movable sieve and a conveyor belt having a slurry outlet , the feed end of the moving sieve is connected to the slurry outlet , the slurry derived through the slurry outlet , and the movable sieve can move the screened material from its feed end to the discharge end, the conveyor is arranged at the lower side of the discharge end of the movable screen .

[0011] Further, the double screw mining machine includes a pool body and two screws , the tank is formed with a scrubbing groove extending along its length direction, the scrubbing groove is inclined along its length and the bottom of the pool is provided with the slurry outlet for the slurry overflow of the pool , the screws are parallel to the scrub groove and are all embedded into the scrub groove , the two screws are rotated to the pool body to scrub the solid medium in the slurry of the pool .

[0012] Further, the movable screen includes a vibration frame , a plate screen, an elastic member, and a vibration motor, through which is the vibration frame is connected to the double screw washer, and the slurry outlet is positioned above the vibration frame on which the plate frame is mounted and is inclined downward in a direction away from the slurry outlet and extending to a position above the conveyor belt .

[0013] Further, the elastic element also comprises two connecting bars , two connecting bars , and two connecting bars , and two bars .

[0014] Further, the movable screen comprises a cartridge , a tubular screen, and a rotating member that is coaxally embedded in the cartridge and connected to the cartridge via the rotating member, and the slurry outlet extends into the tubular screen, which is inclined downward in a direction away from the slurry outlet .

[0015] Further, the bottom of the barrel has a first outlet and a second outlet port at the bottom of the barrel screen, the second outlet away from the slurry outlet , the inner bottom of the barrel wall forms a tapered inner bottom wall , and the first outlet at the tip of the conical inner bottom wall .

[0016] Further, the rotating member includes four bearing seats , two shafts and four rollers , two arranged parallel to the sides of the tubular screen, each of the rotating shaft is connected to the inner wall of the sieve , each of the rollers is connected to the outer wall of the tubular screen, the two shafts rotate in the same direction to drive the tubular wheel through the friction force between the roller and the tubular screen . Further, four limit rings disposed on the tubular screen are arranged against each side of the roller .

[0017] Further, the double screw washer and the movable sieve are arranged in a one-to-one arrangement along the length of the conveyor belt .

[0018] Further, it also includes a discharging assembly for receiving the slurry screened through the movable screen, and the feeding end of the discharge assembly is provided at the bottom of the movable screen .

[0019] Compared with the existing technology, the ore material is imported into the double screw washing machine , the double screw washing machine washes the ore material , the scrubbed slurry flows from the slurry outlet to the active sieve , the movable sieve screens the slurry, blocks the scum in the slurry, and makes it fall on the conveyor belt , and is transported to the designated location through the conveyor belt .

[0020] BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG . 1 is a schematic diagram of the double coil washing system in the laterite nickel ore ;

[0022] FIG . 2 is the embodiment of this application, providing a schematic diagram of the vibration screen installed in the double screw washing system;

[0023] FIG . 3 shows the structure of the vibration screen in the laterite nickel double screw washing system;

[0024] FIG . 4 is the embodiment of this application, the installation diagram of the cylindrical sieve in the double spiral washing system of laterite nickel ore ;

[0025] FIG . 5 is the embodiment of this application, the structural diagram of the cylindrical sieve in the laterite nickel double screw washing system;

[0026] FIG . 6 is a schematic diagram of the configuration of a double-screw washing system provided in the embodiment of this application . DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0027] The preferred embodiment of the application is described in combination with the drawings , wherein the drawings form part of the application and are used together with the embodiment of the application to explain the principles of the application, not to define the scope of the application .

[0028] Due to the existence of wood and grass impurities in laterite nickel ore , in the process of washing ore , the above impurities form scum in the pulp, which i f not treated will af fect the normal operation of the equipment in the subsequent process . Therefore , this application removes the scum in the pulp by improving the washing system .

[0029] As shown in FIG . 1 and 6 , a laterite nickel ore double coil washing system provided in this application includes a double screw washing machine , a movable sieve 300 , and a conveyor belt 400 , a slurry outlet 110 , the feeding end of the movable sieve 300 is connected to the slurry outlet 110 , the movable sieve 300 is exported through the slurry outlet 110 , and the movable sieve 300 can drive the selected material from its feeding end to its discharging end, and the conveyor belt 400 is disposed at the lower side of the discharging end of the movable sieve 300 .

[0030] In implementation, the ore material is introduced into the double screw mining machine , and the double screw mining washing machine washes the ore material . The scrubbed slurry flows from the slurry outlet 110 to the movable sieve 300 . The active sieve 300 screens the slurry to intercept the scum in the slurry and makes it fall on the conveyor belt and transmits it to the designated position through the conveyor belt 400 .

[0031] The double screw mining machine in the present embodiment includes a pool body 100 and two screws 200 with a slurry groove arranged at the bottom of the tank body 100 , which is provided with a slurry outlet 110 for the overflow of the pool body 100 . The two screws 200 are arranged parallel to the scrubbing groove and are embedded in the scrubbing groove . The two screws 200 are rotatively connected with the pool body 100 to scrub the solid medium in the slurry in the tank body 100 . It is understandable that the slurry imported into the doublescrew washing machine contains solid media such as pulp and gravel , as well as scum, and the gravel follows . During the scrubbing, the solid medium such as gravel moves in the inclined upward direction under the conveying of the screw 200 until discharged to the gravel conveyor belt , the scrubbed slurry is exported from the slurry outlet 110 , and finally, the movable sieve 300 screens and blocks the material in the slurry, the scum .

[0032] In one embodiment , in order to facilitate the introduction of the pulp to be scrubbed into the scrubbing tank, and including an inlet end 120 extending above the scrubbing tank, the inlet end 120 may use a pipe or other structure to reali ze the transport of the slurry, which is not limited . Meanwhile , the slurry outlet 110 in this embodiment may be framed or round, excluding the shape of the slurry outlet 110 .

[0033] To facilitate the rotation of the two screws 200 , The driver 210 can be configured to drive two screws 200 , In one embodiment , The drive member 210 includes a rotary motor 211 , two first gears 212 , two drive shafts 213 , and two second gears 214 , The rotary motor 211 is fixed attached to the side wall of the pool body 100 , The output end of the rotary motor 211 is connected to one of the screws 200 , Two first gears 212 are respectively arranged on the two screws 200 , Both drive shafts 213 are rotationally connected to the pool body 100 , Two second gears 214 are respectively set on two transmission shafts 213 , Opposite sides of two second gears 214 , The opposite sides of the two second gears 214 are each engaged with the two first gears 212 .

[0034] Of course , the driving member 210 can also drive the two screws 200 to rotate synchronously by means of dual motors , which is not limited in this application .

[0035] The movable sieve 300 in this embodiment is disposed at the slurry outlet 110 of the pool body 100 to receive the slurry derived through the slurry outlet 110 , through which the movable sieve 300 acts to screen the scum in the slurry . With the action of the movable sieve 300 , the intercepted scum gradually falls to the conveyor belt 400 along the inclined direction of the movable sieve 300 . The operation of the movable screen 300 include vibration, rotation and shaking, and described in detail .

[0036] Example 1 :

[0037] As shown in FIG . 2 , the movable screen 300 in this embodiment is a vibrator 310 through which to vibrate to screen the scum in the slurry .

[0038] As shown in FIG . 3 , the vibration screen 310 includes a vibration frame 311 , a plate screen 312 , an elastic member 313 and a vibration motor 314 , the vibration frame 311 is connected to the bottom of the pool body 100 via the elastic member 313 , and the slurry outlet 110 is positioned above the vibration frame 311 , and the plate screen 312 is mounted on the vibration frame 311 , inclined downward in a direction away from the slurry outlet 110 and extends above the conveyor belt 400 .

[0039] In one embodiment , the elastic member 313 includes a plurality of springs 313a, with the vibration frame 311 connected to the pool body 100 via a plurality of springs 313a . The vibration motor 314 is opened by compression and stretching of the spring 313a to achieve the vibration of the plate screen 312 connected to the vibration frame 311 .

[0040] To ensure stable vibration, The elastic member 313 also includes two parallel-disposed connecting rods 313b, a plurality of limit rods 313c, and a plurality of connecting blocks 313d, Two connecting rods 313b are firmly attached to the pool body 100 , The top ends of the plurality of limit rods 313c are separately connected with the two connecting rods 313b, The bottom ends of the plurality of limit rods 313c are each slide-connected with the plurality of connection blocks 313d in a vertical direction, The plurality of connection blocks 313d are fixed connected to the vibration frame 311 , The plurality of springs 313a are disposed on the plurality of limit rods 313c, Both ends of the plurality of springs 313a meet with the connecting rod 313b and the connecting block 313d, respectively .

[0041] Example 2 :

[0042] As shown in FIG . 4 , the movable sieve 300 in this embodiment is a cylindrical sieve 320 through which it rotates to screen the scum in the slurry . As shown in FIG . 5 , in one embodiment , the cylindrical screen 320 includes a cartridge 321 , a cylindrical screen 322 and a rotating member 323 embedded in the barrel 321 and connected to the cartridge 321 via the rotating member 323 , with the slurry outlet 110 extending into the tubular screen 322 and disposed downward in a direction away from the slurry outlet 110 .

[0043] Where the first outlet port 321 a and the second outlet port 321b are provided at the bottom of the sieve barrel 321 , the first outlet port 321a is located below the tubular screen 322 , the second outlet port 321b is located away from the slurry outlet 322 , and the inner outlet wall of the sieve barrel 321 forms a vertically expanded inner bottom wall 321c, and the first outlet port 321a is disposed at the tip of the conical inner bottom wall 321c .

[0044] In one embodiment , the rotary member 323 includes four bearing bases 323a, two shafts 323b and four rollers 323c, two rollers 323b 323b meet the outer wall of the tubular screen 323b via the bearing shaft 323b and the two wheels 322 drive the tubular screen 322 between the rollers 3232 .

[0045] In order to avoid the tubular screen 322 sliding along its axial direction, this embodiment also includes four limiting rings 322 a disposed on the tubular screen 322 , and each side of the roller 323c meets the limiting ring 322a . Meanwhile , it should be noted that a motor may be used to drive the rotating shaft 323b .

[0046] Example 3 :

[0047] In Example 2 , the roller 323c is an eccentric wheel . With the rotation of the eccentric wheel , not only can drive the tubular screen 322 to rotate , but also can drive the tubular screen 322 to shake .

[0048] The conveyor belt 400 in the present embodiment is used to deliver the scum out of the sieve .

[0049] As shown in FIG . 6 , multiple double screw mining machines in the plant are arranged side by side , so the conveyor belt 400 can cooperate with a plurality of double screw mining machines arranged side by side . Speci fically, the double screw mining machines and the movable sieve 300 are arranged one by one , and the multiple double spiral mining machines are arranged in turn along the length of the conveyor belt 400 . A single conveyor belt can handle the scum transported by multiple movable screens , ef fectively reducing the labor cost .

[0050] The present embodiment also includes a discharging assembly 500 for receiving the slurry screened through the active sieve 300 .

[0051] In one embodiment , the discharge assembly 500 includes the discharge tube 510 . However, due to the operation of the moving sieve 300 , the pulp cannot be ef fectively imported into the discharge pipe 510 , so a trans fer box 520 can be provided, the trans fer box 520 is arranged at the bottom of the moving sieve 300 , and the top of the discharge pipe 510 is connected to the trans fer box 520 to solve the above problems .

[0052] Compared with the existing technology : the ore material is introduced into the double screw washing machine , the double screw washing machine washes the ore material , and the scrubbed slurry flows from the s lurry outlet 110 to the movable sieve 300 . The active sieve 300 screens the slurry, blocks the scum in the pulp and falls to the conveyor belt , and delivers it to the designated position through the conveyor belt 400 .

[0053] The above mentioned is only the best speci fic embodiment of this application, but the protection scope of this application is not limited to this . Any change or replacement that can be easily imagined by the technical personnel familiar in the technical scope disclosed in this application shall be covered within the protection scope of this application .

Claims

WHAT IS CLAIMED IS1 . A laterite nickel double screw washing system comprising :Double screw mining washing machine , which has a slurry outlet ;The movable sieve , the feed end thereof is connected to the slurry outlet , the slurry is derived from the movable sieve , and the slurry outlet can move the selected material from its feed end to its discharging end;A conveyor belt is provided below the discharging end of the moving screen .2 . The laterite nickel double coil washing system of claim 1 , wherein the double screw washing machine includes a pool body and two screws formed with a scrub groove extending along its length direction and the bottom of the pool is disposed with a slurry outlet for the overflow of the pool , the tank, and the two screws are connected to the pool body to scrub the solid medium in the pool slurry .3 . The laterite nickel ore double screw washing system of claim 1 , wherein the movable screen includes a vibration frame , a plate screen, an elastic member, and a vibration motor, the vibration frame is connected to the double screw washer and the slurry outlet is located above the vibration frame , the plate screen is mounted on the vibration frame inclined downward in a direction away from the slurry outlet and extends above the conveyor belt .4 . The laterite nickel double screw washing system according to claim 3 , It is characteri zed by the fact that , The elastic member further includes two connecting rods , a plurality of limit bars , and a plurality of connecting blocks , The two connecting rods are attached to the double screw washer, The tips of the plurality of the limit rods are separately connected to the two connecting rods , The bottom ends of the plurality of limit rods are respectively slide connected with the plurality of connecting blocks in a vertical direction, The plurality of the connection blocks are fixed connected to the vibration frame , The plurality of springs are respectively set on the plurality of limit rods , The ends ofthe plurality of springs are respectively with the connecting rod and the connecting block .5 . The laterite nickel ore double screw washing system of claim 1 , wherein the movable screen includes a cartridge , a tubular screen, and a rotating member coaxially embedded in the cartridge and connected to the cartridge via the rotating member, and the slurry outlet extends into the tubular screen, which is inclined downward in a direction away from the slurry outlet .6 . The laterite nickel double screw washing system of claim 5 , wherein the bottom of the barrel has a first outlet at the bottom of the barrel and the second outlet at the outlet with the inner bottom wall forming a conical inner bottom wall , and the first outlet is disposed at the tip of the conical inner bottom wall .7 . The laterite nickel double screw washing system of claim 5 , wherein the rotation includes four bearing seats , two shafts , and two rollers disposed parallel to the two sides of the tubular web to the inner wall of the web via the bearing seat , and each of the rollers is connected to the outer wall of the tubular screen by the friction force between the roller and the tubular web .8 . The laterite nickel double screw washing system of claim 7 , further comprising four limit rings disposed on the tubular screen against each side of the roller .9 . The laterite nickel double coil washing system of claim 1 , wherein the double coil washer and the movable sieve are disposed one to one , and a plurality of double coil washing machines are arranged along the length of the conveyor belt .10 . The laterite nickel double coil washing system of claim 1 , further comprising a discharging assembly for receiving slurry screened through the movable sieve disposed at the bottom of the movable sieve .

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