WO2023115605A1

WO2023115605A1 - Acid-insoluble slag backwashing apparatus and use method thereof

Info

Publication number: WO2023115605A1
Application number: PCT/CN2021/141869
Authority: WO
Inventors: 刘书文; 罗维锵; 范佳升; 张�杰; 钟声彪; 黄福艺
Original assignee: 清远市嘉禾稀有金属有限公司
Priority date: 2021-12-24
Filing date: 2021-12-28
Publication date: 2023-06-29
Also published as: CN114225545B; CN114225545A

Abstract

An acid-insoluble slag backwashing apparatus and a use method thereof. The apparatus has a novel structure and comprises a first filter pressing device (100), a feeding device (200), a cleaning tower (300), a pumping device (400) and a second filter pressing device (500) which are sequentially arranged along a feeding path. The first filter pressing device (100) performs filter pressing on acid-insoluble slag, collects a filtrate, scatters a filter residue and then conveys to the feeding device (200). The feeding device (200) conveys and lifts the acid-insoluble slag, and feeds same into the cleaning tower (300) for partition cleaning. The cleaned materials are sent to the pumping device (400) by means of a first confluence pipe (610), and the pumping device (400) pumps the materials to the second filter pressing device (500) which performs filter pressing, collects a filtrate, and discharges a filter residue. By building a mechanical structure matched with a technological process of primary filter pressing-acid-insoluble slag backwashing-secondary filter pressing, the acid-insoluble slag may be subjected to secondary cleaning, and rare earth raw materials adhered to the surface of the acid-insoluble slag can be recycled. Continuous work can be performed in the whole recovery process, the space can be fully utilized, thereby achieving multiple and synchronous processing and improving the recovery processing efficiency.

Description

A kind of acid slag backwashing equipment and using method thereof

technical field

The invention relates to the field of acid-dissolved slag treatment, and more specifically, to an acid-dissolved slag backwashing device and a method for using the same.

Background technique

For the treatment of rare earth raw materials, it is necessary to use hydrochloric acid to dissolve, and then process the solution; when hydrochloric acid dissolves rare earth raw materials, there will be some substances that cannot be dissolved by hydrochloric acid, resulting in acid-soluble slag, which will entrain some rare earth Feed liquid affects the yield of rare earth raw materials. If it is discharged directly, it will cause loss of raw materials, waste of resources, and also affect corporate benefits. Therefore, it is necessary to process acid-soluble slag to recycle rare earth raw materials and reduce waste.

technical problem

At present, the recycling method is mainly through backwashing, and backwashing requires long-term stirring and cleaning. Due to the lack of special equipment, most of them are processed by large-volume stirring tanks at present, and the working efficiency of a single stirring tank is not high. High, multiple mixing tanks will occupy a large area, which is not realistic; moreover, the use of multiple mixing tanks makes the transfer and transfer of waste residues inconvenient. Therefore, it is necessary to design a special equipment to improve Production process efficiency.

technical solution

In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose an acid-dissolved slag backwashing equipment and its use method. Rare earth raw materials on the surface of slag; and the whole recycling process can work continuously to improve the efficiency of recycling.

For reaching this purpose, the present invention adopts following technical scheme:

The invention provides an acid-soluble slag backwashing device, comprising a first filter press device, a feeding device, a cleaning tower, a pumping device, and a second filter press device; the first filter press device press-filters the acid-soluble slag, collects the filtrate, After the filter residue is broken up, it is sent to the feeding device; the feeding device transports and lifts the acid-soluble residue, and throws it into the cleaning tower for partition cleaning. The cleaned material is sent to the pumping device through the first confluence pipe, and the pumping device pumps the material Go to the second filter press device, perform press filtration, collect the filtrate, and discharge the filter residue; the cleaning tower includes a tower body and a plurality of partitions installed inside the tower body, and the partitions divide the tower body into multiple cleaning chambers, each cleaning chamber The bottom of the side wall of the cleaning chamber is connected with a discharge pipe, the discharge pipe is connected with the first confluence pipe, and the discharge pipe is provided with a first solenoid valve; the top of the side wall of the cleaning chamber is connected with a water supply pipe, and the water supply pipe is provided with a second solenoid valve , a plurality of water supply pipes are connected with the second confluence pipe, the bottom of the second confluence pipe is connected with the output port of the booster pump, and the water inlet of the booster pump is connected with the external water source; shaft, the stirring shaft is driven by the first motor, the stirring shaft runs through the entire cleaning chamber, the outer wall of the stirring shaft corresponds to the cleaning chamber, and multiple stirring frames are installed; the inner wall of the cleaning chamber is equipped with a liquid level sensor and a material level sensor; the side wall of the cleaning chamber There is a feeding port on the top; the feeding device includes a first screw machine for horizontal conveying and a second screw machine for vertical conveying, the feeding port of the first screw machine is located below the outlet of the first filter press device, The bottom of the bottom of the screw machine is connected with the output end of the first screw machine; the side wall of the second screw machine is provided with a plurality of discharge ports corresponding to the feeding port, and the height of the discharge port is consistent with the height of the feeding port; multiple guide materials are installed on the second screw machine structure, the material guide structure is set corresponding to the discharge port, and the material guide structure can be used to connect the conduction discharge port and the feeding port, or block the conduction.

In the preferred technical solution of the present invention, the material guide structure includes a guide cylinder, the inner wall of the guide cylinder is adapted to the outer wall of the second screw machine, and is slidably fitted, and the side of the guide cylinder close to the tower body is communicated with a downwardly inclined The diameter of the guide tube is larger than that of the outlet, and the lower end of the guide tube extends into the feeding port; the side of the guide tube away from the guide tube is fixed with a push plate, and the bottom surface of the push plate is in line with the push plate. The end of the piston rod of the rod motor is fixedly connected, and the push rod motor is fixed on the outer wall of the second screw machine through a bracket; the push rod motor can drive the guide cylinder to move vertically, so that the position of the guide tube corresponds to the position of the discharge port; The length from the connecting part of the guide cylinder to the bottom end of the guide cylinder is greater than the aperture of the discharge port, and the push rod motor can drive the guide cylinder to move up to the discharge port to realize blocking.

In the preferred technical solution of the present invention, a shielding cover is provided inside the feeding port, and the shielding cover includes two supporting plates, and the supporting plate is provided with a card slot corresponding to the material guide tube, and the shape of the two butt jointed card slots is suitable for the outer wall of the material guide tube. Matching; the wall surface of the support plate away from the material guide pipe is fixed with a telescopic cover, the other end of the telescopic cover is fixed on the inner wall of the feeding port, and the two sides of the telescopic cover slide against the two side walls of the feeding port; The movement of the tube expands and contracts, and always maintains the shielding of the feeding port.

In a preferred technical solution of the present invention, guide strips are fixed on both sides of the outer wall of the second screw machine, and guide bars are provided on the inner wall of the guide cylinder correspondingly, and the guide cylinder slides vertically along the guide bar through the slide grooves.

In the preferred technical solution of the present invention, the pumping device includes a transfer box and a mortar pump, the feed inlet of the transfer box communicates with the bottom end of the first confluence pipe, and the outlet of the transfer box and the feed inlet of the mortar pump pass through a pipeline Connected, the discharge port of the mortar pump is connected with a feed pipe, and the feed pipe is connected with the feed port of the second filter press device.

In the preferred technical solution of the present invention, the first filter press device includes a filter press body, a receiving bucket installed under the filter press body, and a plurality of crushing rollers are mounted inside the receiving bucket; the bottom of the receiving bucket is inclined, And there is a groove on the lower side of the inclination, the groove is an arc groove structure, and a plurality of filter holes are arranged at the bottom of the groove; the inner turret of the groove is equipped with crushing rollers, and the rotating shafts of the crushing rollers and multiple crushing rollers are connected with each other. The output shaft of the second motor is driven and connected through the sprocket chain assembly, and the second motor is fixedly installed on the outer wall of the receiving bucket; the second filter press device has the same structure as the first filter press device.

In the preferred technical solution of the present invention, the outer wall of the crushing roller is fixed with a plurality of convex tooth groups, the convex tooth groups are distributed in a circular array around the axis of the crushing roller, and the convex tooth groups include a plurality of convex teeth distributed in an array along the axial direction The inner wall of the bottom of the receiving bucket is fixed with a plurality of slots, the slots correspond to the positions of the protruding teeth, the thickness of the protruding teeth is adapted to the width of the slots, and the rotation of the crushing roller can drive the protruding teeth into the slots; A plurality of vibrating motors are fixedly installed on the outside of the bottom.

In a preferred technical solution of the present invention, the top surface of the partition is inclined and slopes downward toward the side of the discharge pipe, and the discharge pipe slopes downward toward the side of the first confluence pipe.

The invention provides a method for using acid-dissolved slag backwashing equipment, comprising the following steps:

S1. The first filter press device press-filters the acid-soluble slag put in for the first time, and collects the filtrate; the filter residue falls into the receiving bucket, and is discharged after being broken up by the crushing roller and the crushing roller;

S2. The crushed filter residue enters the feeding device, and passes through the first screw machine and the second screw machine; connects the guide structure corresponding to the empty cleaning chamber, and puts an appropriate amount of filter residue into the corresponding cleaning chamber; disconnected;

S3. Inject a preset amount of clean water into the corresponding cleaning chamber, and start the first motor to stir the filter residue and clean water inside, so as to backwash the filter residue, and the whole cleaning process lasts for at least 2 hours;

S4. After the preset cleaning time is reached, open the first electromagnetic valve on the corresponding discharge pipe, and send the cleaned filter residue and liquid to the transfer box;

S5. The mortar pump pumps and transfers the material in the transfer box to the second filter press device, performs the second filter press, and collects the filtrate; the filter residue falls into the receiving bucket, and is broken up by the crushing roller and the crushing roller back out.

Further, in step S1, the second motor drives the crushing roller and the crushing roller to rotate synchronously, and the vibration motor is also started synchronously, the vibration can be transmitted to the card slot, and the protruding teeth extend into the card slot and are held against the side of the card slot The vibration will also be transmitted when the wall is crushed, which will accelerate the shaking and stirring of the material, and also promote the movement of the material to the crushing roller to accelerate the discharge.

Beneficial effect

The invention provides an acid-soluble slag backwashing device and its use method, which has a novel structure, including sequentially setting a first filter press device, a feed device, a cleaning tower, a pumping device, and a second filter press device along the feeding path; wherein, The first filter press device press-filters the acid-soluble slag, collects the filtrate, breaks up the filter residue and throws it to the feeding device; the feeding device transports and lifts the acid-soluble slag, throws it into the cleaning tower for partition cleaning, and the cleaned material is passed through The first confluence pipe is sent to the pumping device, and the pumping device pumps the material to the second filter press device for press filtration, collects the filtrate, and discharges the filter residue; build a first-stage filter press-acid soluble slag backwash-secondary press filter The mechanical structure matched with the technological process can carry out secondary cleaning on the acid-dissolved slag and recover the rare earth raw materials adhering to the surface of the acid-dissolved slag; and the whole recovery process can work continuously to improve the recovery and treatment efficiency; the design of the cleaning tower can Occupying space is utilized in the vertical space, and the same stirring shaft can be used to effectively agitate and clean the materials, which can also reduce power consumption; the second screw machine is correspondingly equipped with multiple material guide structures, which can realize when feeding is required Connect the material guide, realize blocking when feeding is not needed, realize automatic material transmission between the feeding device and the cleaning tower, and improve work efficiency.

Description of drawings

Fig. 1 is the distribution plan view of a kind of acid-dissolved slag backwashing equipment provided in the specific embodiment of the present invention;

Fig. 2 is the side view of a kind of acid-dissolved slag backwashing equipment provided in the specific embodiment of the present invention;

Figure 3 is an enlarged view of part A in Figure 2

Fig. 4 is the schematic diagram of the cooperative structure of the feeding device, the cleaning tower, the pumping device, and the second filter press device provided in the specific embodiment of the present invention;

Fig. 5 is an enlarged view of part B in Fig. 4;

Fig. 6 is a schematic diagram of the internal structure of the receiving bucket provided in a specific embodiment of the present invention;

Fig. 7 is a top view of the cooperation between the crushing roller and the locking groove provided in the specific embodiment of the present invention.

In the picture:

100. First filter press device; 110. Filter press body; 120. Receiving bucket; 130. Crushing roller; 131. Convex teeth; 140. Groove; 150. Crushing roller; 160. Second motor; ; 180, vibration motor; 200, feeding device; 210, the first screw machine; 220, the second screw machine; 221, discharge port; 222, guide bar; 230, guide material structure; 231, guide cylinder; Tube; 233, push plate; 234, push rod motor; 300, cleaning tower; 310, tower body; 320, clapboard; 330, cleaning cavity; 331, feeding port; 350, discharge pipe; 360, stirring shaft; 371, liquid level sensor; 372, material level sensor; 400, pumping device; 410, transfer box; 420, mortar pump; 430, feeding pipe; 500, second filter press device; 610, first Confluence pipe; 710, water supply pipe; 711, second solenoid valve; 720, second confluence pipe; 730, booster pump; 800, shielding cover; 810, support plate; 820, telescopic cover.

BEST MODE FOR CARRYING OUT THE INVENTION

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figures 1 to 7, an acid-dissolved slag backwashing device is disclosed in a specific embodiment of the present invention, including a first filter press device 100, a feeding device 200, a cleaning tower 300, a pumping device 400, a second press The filter device 500; the first filter press device 100 press-filters the acid-soluble slag, collects the filtrate and breaks up the filter residue and throws it at the feeding device 200; the feeding device 200 transports and lifts the acid-soluble slag, and throws it into the cleaning tower 300 for further Partition cleaning, the cleaned material is sent to the pumping device 400 through the first confluence pipe 610, and the pumping device 400 pumps the material to the second filter press device 500 for pressure filtration, collects the filtrate, and discharges the filter residue; the cleaning tower 300 includes a tower body 310, a plurality of partitions 320 installed inside the tower body 310, the partitions 320 divide the interior of the tower body 310 into a plurality of cleaning chambers 330, the bottom of the side wall of each cleaning chamber 330 is connected with a discharge pipe 350, and the discharge pipe 350 It communicates with the first confluence pipe 610, and the discharge pipe 350 is provided with a first solenoid valve 351; the top of the side wall of the cleaning chamber 330 is connected with a water supply pipe 710, and the water supply pipe 710 is provided with a second solenoid valve 711, and multiple water supply pipes 710 are all communicated with the second confluence pipe 720, the bottom of the second confluence pipe 720 is communicated with the output port of the booster pump 730, and the water inlet of the booster pump 730 is communicated with the external water source; Stirring shaft 360, the stirring shaft 360 is driven by the first motor, the stirring shaft 360 runs through the entire cleaning chamber 330, the outer wall of the stirring shaft 360 is equipped with a plurality of stirring racks corresponding to the cleaning chamber 330; the inner wall of the cleaning chamber 330 is equipped with a liquid level sensor 371 and The material level sensor 372; the top of the side wall of the cleaning chamber 330 is provided with a feeding port 331; the feeding device 200 includes a first screw machine 210 conveyed horizontally and a second screw machine 220 conveyed vertically, and the feeding port of the first screw machine 210 Located below the discharge port of the first filter press device 100, the bottom of the second screw machine 220 communicates with the output end of the first screw machine 210; the side wall of the second screw machine 220 is provided with a plurality of discharge ports 221 corresponding to the feeding port 331 , the height of the discharge port 221 is consistent with the height of the feeding port 331; a plurality of material guide structures 230 are installed on the second screw machine 220, and the material guide structures 230 are set corresponding to the discharge port 221, and the material guide structures 230 can be used to connect the conduction discharge port 221 and feeding port 331, or blocking conduction.

The above-mentioned acid-soluble slag backwashing equipment has a novel structure, including sequentially setting a first filter press device, a feed device, a cleaning tower, a pumping device, and a second press filter device along the feeding path; wherein, the first filter press device is for Acid-soluble slag press filtration, collect filtrate, filter residue is scattered, and then put it to the feeding device; the feeding device transports and lifts the acid-soluble slag, throws it into the cleaning tower for partition cleaning, and the cleaned material is sent to the At the pumping device, the pumping device pumps the material to the second filter press device for press filtration, collects the filtrate, and discharges the filter residue; build a mechanical structure that matches the process flow of the first-stage filter press-acid soluble slag backwash-secondary press filter , the acid-soluble slag can be cleaned twice, and the rare earth raw materials adhered to the surface of the acid-soluble slag can be recovered; and the whole recovery process can be carried out continuously to improve the recovery and treatment efficiency; the design of the cleaning tower can be carried out in the vertical space Occupies are utilized, and the same stirring shaft can be used to effectively agitate and clean the materials, which can also reduce power consumption; the second screw machine is equipped with multiple material guide structures correspondingly, which can realize the material guide connection when feeding is required. Blocking is realized when feeding is not needed, and the automatic transmission of materials between the feeding device and the cleaning tower is realized to improve work efficiency.

Further, the material guide structure 230 includes a guide cylinder 231, the inner wall of the guide cylinder 231 is adapted to and slidably fitted with the outer wall of the second screw machine 220, and the side of the guide cylinder 231 close to the tower body 310 is communicated with a downwardly inclined The feed pipe 232, the aperture of the feed pipe 232 is larger than the aperture of the discharge port 221, and the inclined lower end of the feed pipe 232 extends into the feeding port 331; the side of the guide cylinder 231 away from the feed pipe 232 is fixedly provided with a push plate 233, the bottom surface of the push plate 233 is fixedly connected with the piston rod end of the push rod motor 234, and the push rod motor 234 is fixed on the outer wall of the second screw machine 220 by a bracket; the push rod motor 234 can drive the guide cylinder 231 to move vertically, Make the material guide tube 232 correspond to the position of the discharge port 221; the length from the connection between the material guide tube 232 and the guide tube 231 to the bottom end of the guide tube 231 is greater than the aperture of the discharge port 221, and the push rod motor 234 can drive the guide tube 231 to move up to the opposite position. The discharge port 221 is blocked; this structural design can realize the opening or sealing of the discharge port through the lifting of the electric guide cylinder of the push rod motor. More specifically, when it is necessary to feed the corresponding cleaning chamber, the corresponding push rod The motor starts, drives the guide cylinder to move down to the position corresponding to the position of the material guide tube and the discharge port, the second screw machine continues to feed the material, and the material can be discharged when it is sent to the open discharge port; when the internal material level sensor detects that the material volume reaches the preset After setting the range, stop the second screw machine, start the push rod motor to drive the guide cylinder to move down, and seal the discharge port to prevent misfeeding when the subsequent cleaning chamber needs to be fed; it should be noted that when the feeding process is completely stopped , the feeding device stops as a whole, the first filter press device can continue to filter, but the generated filter residue is temporarily stored and not put into the feeding device; moreover, when the material is put into the cleaning chamber, the stirring shaft is in a rotating state, and the The material is stirred and will not accumulate in a certain area, so as to detect that the amount of material delivered reaches the preset range.

Further, a shielding cover 800 is provided in the feeding port 331, and the shielding cover 800 includes two supporting plates 810, and the supporting plates 810 are provided with slots corresponding to the feeding tube 232, and the two butted slots are adapted to the shape of the outer wall of the feeding tube 232. Fitting; the support plate 810 is fixed on the wall away from the feeding pipe 232 with a telescoping cover 820, the other end of the telescoping cover 820 is fixed on the inner wall of the feeding port 331, and the two sides of the telescoping cover 820 slide against the two side walls of the feeding port 331 The telescopic cover 820 expands and contracts with the movement of the material guide tube 232, and always maintains the shielding of the feeding port 331; this structural design can effectively block the feeding port, no matter whether the material guide structure is in the feeding state or the blocking state , The shielding cover can block the feeding port; especially when the cleaning tower is located outdoors, this design can prevent the entry of external rodents, birds and other animals.

Further, guide strips 222 are fixed on both sides of the outer wall of the second screw machine 220, and guide bars 222 are provided on the inner wall of the guide cylinder 231 correspondingly. The guide cylinder 231 slides vertically along the guide bar 222 through the slide grooves; this structural design can further define The movement of the guide cylinder makes the port of the guide pipe determined to be maintained inside the feeding port.

Further, the pumping device 400 includes a transfer box 410 and a mortar pump 420, the feed port of the transfer case 410 communicates with the bottom end of the first confluence pipe 610, the discharge port of the transfer case 410 and the feed port of the mortar pump 420 pass through a pipeline Communication, the discharge port of the mortar pump 420 is connected with a feed pipe 430 , and the feed pipe 430 is connected with the feed port of the second filter press device 500 .

Further, the first filter press device 100 includes a filter press body 110, a receiving bucket 120 installed below the filter press body 110, and a plurality of crushing rollers 130 are erected inside the receiving bucket 120; the bottom of the receiving bucket 120 is arranged obliquely, And be provided with groove 140 on the lower side of inclination, groove 140 is an arc groove structure, and the bottom of groove 140 is provided with a plurality of filter holes; Groove 140 internal turret is provided with pulverizing roller 150, and pulverizing roller 150 and multiple The rotating shaft of the strip crushing roller 130 is connected to the output shaft of the second motor 160 through a sprocket chain assembly, and the second motor 160 is fixedly installed on the outer wall of the receiving bucket 120; the second filter press device 500 has the same structure as the first filter press device 100 The receiving bucket can be used to accept the filter residue discharged from the main body of the filter press. The filter residue is effectively broken up and broken by the crushing roller and the crushing roller, which is convenient for subsequent transportation; moreover, the receiving bucket can be used as a temporary storage area for materials, especially for all When backwashing is performed inside the cleaning chamber, the feeding device is in the standby state, and the materials are temporarily stored in the receiving bucket without feeding.

Further, the outer wall of the crushing roller 130 is fixed with a plurality of protruding tooth groups, and the protruding tooth groups are distributed in a circular array around the axis of the crushing roller 130. The protruding tooth groups include a plurality of protruding teeth 131 distributed in an array along the axial direction. The outer wall is fixed with sharp teeth to leave space for the material to fall, and can also accelerate the grinding of the material; it can effectively agitate and break the filter residue to facilitate subsequent smooth discharge; the bottom inner wall of the receiving bucket 120 is fixed with a plurality of card slots 170 , the slot 170 corresponds to the position of the convex tooth 131, the thickness of the convex tooth 131 is adapted to the width of the slot 170, and the crushing roller 130 rotates to drive the convex tooth 131 into the slot 170; the outside of the bottom of the receiving bucket 120 is fixedly installed with A plurality of vibrating motors 180; when the vibrating motor starts, the vibration can be transmitted to the card slot, and the convex teeth extend into the card slot, and the vibration will also be transmitted when it is held against the side wall of the card slot, thereby accelerating the shaking and stirring of the material, and also It can promote the material to move to the crushing roller and accelerate the discharge.

Further, the top surface of the partition 320 is inclined and slopes downward toward the side of the discharge pipe 350, and the discharge pipe 350 slopes downward toward the side of the first confluence pipe 610; it facilitates the discharge of materials and liquid after backwashing.

The invention also discloses a method for using acid-dissolved slag backwashing equipment, which includes the following steps:

The present invention has been described through preferred embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the present application all belong to the protection scope of the present invention.

Embodiments of the present invention

Type the description of the embodiments of the invention paragraph here.

Industrial Applicability

Type the industrial applicability description paragraph here.

Sequence Listing Free Content

Type the sequence listing free content description paragraph here.

Claims

An acid-dissolved slag backwashing equipment is characterized in that:

Including a first filter press device, a feeding device, a cleaning tower, a pumping device, and a second filter press device;

The first filter press device press-filters the acid-soluble slag, collects the filtrate, and breaks up the filter residue and throws it at the feeding device;

The feeding device transports and lifts the acid-soluble slag, and throws it into the cleaning tower for partition cleaning. The cleaned material is sent to the pumping device through the first confluence pipe, and the pumping device pumps the material to the second filter press. Filter, collect the filtrate, and discharge the filter residue;

The cleaning tower includes a tower body and a plurality of partitions installed inside the tower body. The partitions divide the tower body into several cleaning chambers. The bottom of the side wall of each cleaning chamber is connected with a discharge pipe, and the discharge pipe is connected with the first confluence pipe. , the discharge pipe is provided with a first solenoid valve; the top of the side wall of the cleaning chamber is connected with a water supply pipe, and a second solenoid valve is provided on the water supply pipe, and a plurality of water supply pipes are connected with the second confluence pipe, and the second confluence pipe The bottom is connected with the output port of the booster pump, and the water inlet of the booster pump is connected with the external water source; a stirring shaft is installed on the axial position of the tower body, driven by the first motor, and the stirring shaft runs through the entire cleaning chamber, stirring The outer wall of the shaft is equipped with a plurality of stirring frames corresponding to the cleaning chamber; the inner wall of the cleaning chamber is equipped with a liquid level sensor and a material level sensor; the top of the side wall of the cleaning chamber is provided with a feeding port;

The feeding device comprises a first screw machine conveyed horizontally and a second screw machine conveyed vertically. The feed port of the first screw machine is located below the discharge port of the first filter press device, and the bottom of the second screw machine is connected with the first screw machine. The output end of the screw machine is connected; the side wall of the second screw machine is provided with a plurality of discharge ports corresponding to the feeding port, and the height of the discharge port is consistent with the height of the feeding port; multiple material guide structures are installed on the second screw machine. The discharge port is set, and the material guide structure can be used to connect the conduction discharge port and the feeding port, or block the conduction.
A kind of acid-dissolved slag backwashing equipment according to claim 1, characterized in that:

The material guide structure includes a guide cylinder. The inner wall of the guide cylinder is adapted and slidably matched with the outer wall of the second screw machine. The side of the guide cylinder close to the tower body is connected with a downwardly inclined material guide tube. The aperture of the guide tube is Larger than the hole diameter of the discharge port, the inclined lower end of the guide tube extends into the feed port; the side of the guide cylinder away from the guide tube is fixed with a push plate, and the bottom surface of the push plate is fixedly connected with the end of the piston rod of the push rod motor. The push rod motor is fixed on the outer wall of the second screw machine through the bracket; the push rod motor can drive the guide cylinder to move vertically, so that the position of the material guide tube corresponds to the position of the discharge port; The length is greater than the aperture of the discharge port, and the push rod motor can drive the guide cylinder to move up to the discharge port to realize sealing.
A kind of acid-dissolved slag backwashing equipment according to claim 2, characterized in that:

There is a shielding cover inside the feeding port. The shielding cover includes two support plates. The support plate is provided with a card slot corresponding to the material guide tube. The two docked card slots are adapted to the shape of the outer wall of the material guide tube; the support plate is far away from the wall surface of the material guide tube. A telescopic cover is fixed on the top, and the other end of the telescopic cover is fixed on the inner wall of the feeding port. The two sides of the telescopic cover slide against the two side walls of the feeding port; Mouth covering.
A kind of acid slag backwashing equipment according to claim 3, is characterized in that:

Both sides of the outer wall of the second screw machine are fixed with guide strips, and the inner wall of the guide cylinder is correspondingly provided with a chute, and the guide cylinder slides vertically along the guide bar through the chute.
A kind of acid slag backwashing equipment according to claim 3, is characterized in that:

Both sides of the outer wall of the second screw machine are fixed with guide strips, and the inner wall of the guide cylinder is correspondingly provided with a chute, and the guide cylinder slides vertically along the guide bar through the chute.
A kind of acid-dissolved slag backwashing equipment according to claim 5, characterized in that:

The first filter press device includes a filter press body, a receiving bucket installed under the filter press body, and a plurality of crushing rollers are arranged inside the receiving bucket; Groove, the groove is an arc-shaped groove structure, and the bottom of the groove is provided with a plurality of filter holes; the turret inside the groove is equipped with a crushing roller, and the rotating shaft of the crushing roller and multiple crushing rollers and the output shaft of the second motor pass through the sprocket chain The components are connected by transmission, and the second motor is fixedly installed on the outer wall of the receiving bucket; the structure of the second filter press device is the same as that of the first filter press device.
A kind of acid slag backwashing equipment according to claim 6, characterized in that:

The outer wall of the crushing roller is fixed with a plurality of convex tooth groups, and the convex tooth groups are distributed in a circular array around the axis of the crushing roller, and the convex tooth group includes a plurality of convex teeth distributed in an array along the axial direction;

The inner wall of the bottom of the receiving bucket is fixed with a plurality of slots, the slots correspond to the positions of the protruding teeth, the thickness of the protruding teeth is adapted to the width of the slots, and the rotation of the crushing roller can drive the protruding teeth into the slots; the bottom of the receiving bucket A plurality of vibrating motors are fixedly installed on the outside.
A kind of acid slag backwashing equipment according to claim 7, characterized in that:

The top surface of the separator is inclined and slopes downward toward the side of the discharge pipe, and the discharge pipe slopes downward toward the side of the first confluence pipe.
A method for using the acid-dissolved slag backwashing equipment as claimed in claim 8, characterized in that:

Include the following steps:

S1. The first filter press device press-filters the acid-soluble slag put in for the first time, and collects the filtrate; the filter residue falls into the receiving bucket, and is discharged after being broken up by the crushing roller and the crushing roller;

S2. The crushed filter residue enters the feeding device, and passes through the first screw machine and the second screw machine; connects the guide structure corresponding to the empty cleaning chamber, and puts an appropriate amount of filter residue into the corresponding cleaning chamber; disconnected;

S3. Inject a preset amount of clean water into the corresponding cleaning chamber, and start the first motor to stir the filter residue and clean water inside, so as to backwash the filter residue, and the whole cleaning process lasts for at least 2 hours;

S4. After the preset cleaning time is reached, open the first electromagnetic valve on the corresponding discharge pipe, and send the cleaned filter residue and liquid to the transfer box;

S5. The mortar pump pumps and transfers the material in the transfer box to the second filter press device, performs the second filter press, and collects the filtrate; the filter residue falls into the receiving bucket, and is broken up by the crushing roller and the crushing roller back out.
A method for using the acid-dissolved slag backwashing equipment as claimed in claim 8, characterized in that:

Include the following steps:

S1. The first filter press device press-filters the acid-soluble slag put in for the first time, and collects the filtrate; the filter residue falls into the receiving bucket, and is discharged after being broken up by the crushing roller and the crushing roller;

S2. The crushed filter residue enters the feeding device, and passes through the first screw machine and the second screw machine; connects the guide structure corresponding to the empty cleaning chamber, and puts an appropriate amount of filter residue into the corresponding cleaning chamber; disconnected;

S3. Inject a preset amount of clean water into the corresponding cleaning chamber, and start the first motor to stir the filter residue and clean water inside, so as to backwash the filter residue, and the whole cleaning process lasts for at least 2 hours;

S4. After the preset cleaning time is reached, open the first electromagnetic valve on the corresponding discharge pipe, and send the cleaned filter residue and liquid to the transfer box;

S5. The mortar pump pumps and transfers the material in the transfer box to the second filter press device, performs the second filter press, and collects the filtrate; the filter residue falls into the receiving bucket, and is broken up by the crushing roller and the crushing roller back out.