CN107854876A - Filter-press arrangement and its application method applied to ternary precursor filtration washing - Google Patents
Filter-press arrangement and its application method applied to ternary precursor filtration washing Download PDFInfo
- Publication number
- CN107854876A CN107854876A CN201711112445.9A CN201711112445A CN107854876A CN 107854876 A CN107854876 A CN 107854876A CN 201711112445 A CN201711112445 A CN 201711112445A CN 107854876 A CN107854876 A CN 107854876A
- Authority
- CN
- China
- Prior art keywords
- filter
- tailgate
- crossbeam
- feedboard
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/30—Feeding devices ; Discharge devices
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The present invention relates to ternary precursor field of material technology, more particularly to a kind of filter-press arrangement and its application method applied to ternary precursor filtration washing.The present invention, including integrally formed frame and crossbeam, the both ends of crossbeam are connected to feedboard and tailgate, wherein feedboard is fixedly connected with crossbeam, tailgate is slidably connected with crossbeam, several filter elements are provided between feedboard and tailgate, the filter element is slidably connected with crossbeam, the compressed oil cylinder being fixedly connected with crossbeam is located at crossbeam close to one end of tailgate, the compressed oil cylinder can promote tailgate to be slided towards close to the direction of feedboard, tailgate side offers tailgate charging aperture, and metal hose connects with tailgate charging aperture.The feedboard and tailgate of the present invention is respectively provided with material feeding function, therefore two charging, two washing can be realized, the pressure filtration washing time is shortened, improves operating efficiency, and agent structure is coated with stainless steel layer or frp layer, magnetic foreign body is effectively prevented to be mixed into handled product.
Description
Technical field
The invention belongs to ternary precursor field of material technology, more particularly to one kind to be applied to ternary precursor filtration washing
Filter-press arrangement and its application method.
Background technology
The quick increasing for being commercially available quick development, thus bringing the electrokinetic cell market demand of electric automobile in recent years
It is long.Nickel-cobalt-manganese ternary material lithium battery because with specific capacity height, good cycle, have a safety feature, it is cheap, be readily synthesized
The advantages that, good solves electrokinetic cell performance and the balance of capacity, has substantially met whole needs of power battery material,
It is acknowledged as one of most promising cobalt acid lithium alternative materials.
Ternary precursor material needs to carry out slurries filtration and impurity washing in process of production, by traditional filter press mistake
Filter washing condition, major impurity S contents are generally 1500-2000ppm, and Na contents are generally 150-200ppm, it is difficult to continue to lead to
Washing is crossed to continue to reduce.And after ternary precursor washing, ternary forerunner is made by drying, screening, iron removaling, the flow such as mixed batch
Body finished product.Power battery anode material is being made by being sintered after being mixed with lithium salts, during whole subsequent production, free from admixture
The flow of removal, therefore the impurity remained can enter battery, and influence can be brought on the storing up electricity performance and security performance of battery.
The traditional filter press of ternary precursor materials'use, can only be from an endfeed or water inlet, low production efficiency, and profit
Washed with hot pure water, pure water consumption is 30-40 yuan/ton of product, and waste water is needed by removing heavy metals, deamination, desalination etc.
Method is handled, and realizes qualified discharge, 70 yuan/ton of waste water of the wastewater treatment process cost.Therefore it is highly desirable to pass through work
The optimization of skill or equipment, pure water consumption and wastewater discharge are reduced, to reduce being processed into for the use cost of pure water and waste water
This.
For example, Chinese utility model patent application discloses a kind of [application of Special washing filter press for ternary material precursor
Number：201120347059.X], the utility model, including tank body, the tank body are supported by support, and the top of the tank body leads to
Cross bolt and be fixed with top cover, the bottom of the tank body has been bolted base, has been provided with the tank body and stops rod, the resistance
Gear stick is horizontal positioned, and one end is fixed with inner tank wall, and the length of the stop rod is the 1/8-3/8 of tank diameter.
The utility model connects by using slip-knot mode, in order to fast assembling-disassembling, but the still unresolved life of the utility model
Produce the problems such as efficiency is low, production cost is high, waste of resource.
The content of the invention
Regarding the issue above, the present invention provides a kind of filter press applied to ternary precursor filtration washing fills
Put.
It is a further object of the present invention to provide a kind of use of the filter-press arrangement applied to ternary precursor filtration washing
Method.
To reach above-mentioned purpose, present invention employs following technical proposal：
A kind of filter-press arrangement applied to ternary precursor filtration washing, including integrally formed frame and crossbeam, it is horizontal
The both ends of beam are connected to feedboard and tailgate, and wherein feedboard is fixedly connected with crossbeam, and tailgate is slidably connected with crossbeam, is entered
Several filter elements are provided between flitch and tailgate, the filter element is slidably connected with crossbeam, is fixedly connected with crossbeam
Compressed oil cylinder is located at crossbeam close to one end of tailgate, and the compressed oil cylinder can promote tailgate to be slided towards close to the direction of feedboard,
Tailgate side offers tailgate charging aperture, and metal hose connects with tailgate charging aperture.
In the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, the filter element includes filter
Be covered in the filter cloth of filter surface, in addition to the diaphragm plate being arranged between filter and filter cloth.
In the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, in addition to it is arranged on connecing in frame
Liquid plate, the underface for connecing liquid plate and being located at filter element, recovery holes are opened in the bottom for connecing liquid plate.
It is described to connect liquid plate in the vertical direction in the above-mentioned filter-press arrangement applied to ternary precursor filtration washing
Height by the gradual step-down in center to edge, recovery holes are arranged on the edge for connecing liquid plate, and recovered liquid baffle plate, which is fixedly connected on, connects liquid
The side of plate.
In the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, also slidably connected on the crossbeam
Pulling car, the pulling car can slide along crossbeam and draw filter plate.
In the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, the crossbeam, feedboard and tailgate
Outer surface be respectively provided with one layer of stainless steel layer or frp layer.
A kind of application method of filter-press arrangement applied to ternary precursor filtration washing, comprises the following steps：
Step 1：Fill process, started shooting after press filtration machine check is errorless, and filter element is compressed using compressed oil cylinder, opened
Material inlet valve and draining valve, the slurry to be filtered of 1 volume is pumped into filter press simultaneously from feedboard and bottom plate, works as filter press
When internal pressure reaches 0.4-0.6MPa, stop charging；
Step 2：Washing process, by the sodium hydroxide solution configured with 0.6-0.7 volumes flow velocity hourly by entering
Flitch and bottom plate are pumped into filter press simultaneously carries out alkali liquid washing, and after alkali liquid washing 1h, stopping is pumped into sodium hydroxide solution, then
Purified water is pumped into filter press simultaneously with 0.6-0.7 volumes flow velocity hourly by feedboard and bottom plate and carries out purifying washing
Wash, after purifying water washing 3h, stopping is pumped into purified water；
Step 3：Expressing process, press pump is opened, water under high pressure is pumped into diaphragm plate, the hydraulic pressure of water under high pressure is 1.0-
1.2MPa, 20-30min is kept, now drain pipe road stops liquid, and squeezing is completed；
Step 4：Discharge process, the compressed oil cylinder of filter press is unclamped, open pulling car, filter is pushed open one by one, by thing
Material is drawn off, and obtains ternary precursor product.
In the application method of the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, treated in step 1
The volume fraction of filter pulp material is 8%-12%.
In the application method of the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, the hydrogen in step 2
Sodium hydroxide solution is that temperature is 60-80 DEG C, and Solute mass fraction is 1%-3% sodium hydroxide solution, and the step 2 is in alkali
Liquid is washed with purified water washing process, and the pressure inside filter press is 0.45-0.55MPa.
In the application method of the above-mentioned filter-press arrangement applied to ternary precursor filtration washing, what step 4 obtained
Na content is 80-100ppm in ternary precursor product, and S content is 800-1000ppm.
Compared with prior art, the advantage of the invention is that：
1st, feedboard and tailgate of the invention are respectively provided with material feeding function, therefore can realize two charging, two washing, shorten
The pressure filtration washing time, improve operating efficiency.
2nd, agent structure of the invention is coated with stainless steel layer or frp layer, and it is handled effectively to prevent that magnetic foreign body is mixed into
In product.
3rd, pressure filtration washing method of the present invention can effectively reduce the impurity content in material, while can reduce whole
During the use of water resource and the discharge of waste water, economize on resources, it is environment-friendly.
4th, the present invention is programmed using PLC carries out the whole pressure filtration washing process of automated procedures control, can realize nobody substantially
Operated under state, save human cost.
Brief description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the left view of the present invention；
Fig. 3 is the structural representation of filter element；
In figure：Frame 1, crossbeam 2, feedboard 3, tailgate 4, filter element 5, compressed oil cylinder 6, tailgate charging aperture 7, metal are soft
Pipe 8, connect liquid plate 9, recovery holes 10, pulling car 11, recovered liquid baffle plate 12, filter plate 51, filter cloth 52, diaphragm plate 53, charging aperture a,
Water inlet b, squeezing mouth c.
Embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Embodiment 1
The present embodiment provides a kind of filter-press arrangement applied to ternary precursor filtration washing, carries out below in conjunction with the accompanying drawings
Illustrate.
With reference to shown in Fig. 1-3, a kind of filter-press arrangement applied to ternary precursor filtration washing, including it is integrally formed
Frame 1 and crossbeam 2, the both ends of crossbeam 2 are connected to feedboard 3 and tailgate 4, and wherein feedboard 3 is fixedly connected with crossbeam 2,
Tailgate 4 is slidably connected with crossbeam 2, and several filter elements 5, the filter element 5 and horizontal stroke are provided between feedboard 3 and tailgate 4
Beam 2 is slidably connected, and the compressed oil cylinder 6 being fixedly connected with crossbeam 2 is located at crossbeam 2 close to one end of tailgate 4, the compressed oil cylinder 6
Tailgate 4 can be promoted to be slided towards close to the direction of feedboard 3, the side of tailgate 4 offers tailgate charging aperture 7, metal hose 8 and tailgate
Charging aperture 7 connects.
The present invention, in use, water washing can be entered from water inlet b from the charging aperture a chargings being arranged on feedboard 3, can be from
The metal hose 8 that tailgate charging aperture 7 with being opened in the side of tailgate 4 connects feeds or intake, so as to realize from feedboard 3 and tail
Plate 4 is fed simultaneously, starts compressed oil cylinder 6, and compressed oil cylinder 6 can promote tailgate 4 to be slided towards close to the direction of feedboard 3, enter original
Material realizes separation of solid and liquid using filter element 5, and liquid portion is discharged by tapping valve, and solid portion is temporarily attached to filter element
On 5, it is achieved thereby that two charging, the purpose of two washing, shorten the pressure filtration washing time, improve operating efficiency.
Frame 1 and crossbeam 2 are integrally formed, and feedboard 3 and tailgate 4 are separately positioned on the both ends of crossbeam 2, wherein feedboard 3 with
Crossbeam 2 is fixedly connected, and tailgate 4 is slidably connected with crossbeam 2, and charging aperture a and water inlet b, the side of tailgate 4 are offered on feedboard 3
Tailgate charging aperture 7 is offered, metal hose 8 is connected with tailgate charging aperture 7, and several filterings are provided between feedboard 3 and tailgate 4
Unit 5, filter element 5 are slidably connected with crossbeam 2, and the compressed oil cylinder 6 being fixedly connected with crossbeam 2 is located at crossbeam 2 close to tailgate 4
One end, in use, water washing can be entered from water inlet b from the charging aperture a chargings being arranged on feedboard 3, can be from being opened in tail
The metal hose 8 that the tailgate charging aperture 7 of the side of plate 4 connects feeds or intake, so as to realize from feedboard 3 and tailgate 4 while enter
Material, start compressed oil cylinder 6, compressed oil cylinder 6 can promote tailgate 4 to be slided towards close to the direction of feedboard 3, enter raw material using filtering
Unit 5 realizes separation of solid and liquid, and liquid portion is discharged by tapping valve, and solid portion is temporarily attached on filter element 5, so as to real
Two charging, the purpose of two washing are showed, have shortened the pressure filtration washing time, improve operating efficiency.
The present invention is not construed as limiting to the concrete structure of filter element 5, as long as can play slurry separation of solid and liquid to be filtered
Effect, such as using filter paper or filter-cloth filtering, but preferably, the filter element 5 includes filter 51 and was covered in
The filter cloth 52 on the surface of filter plate 51, in addition to the diaphragm plate 53 being arranged between filter 51 and filter cloth 52, after the completion of preliminary filtering,
Press pump can be opened, now water under high pressure is pumped into diaphragm plate 53 so that the water-filling of diaphragm plate 53 expands, so as to realize to slurry to be filtered
The further press filtration of material, effectively improves solid-liquid separation effect.
With reference to shown in Fig. 1 and Fig. 2, in addition to it is arranged in frame 1 and connects liquid plate 9, the liquid plate 9 that connects is located at filter element
5 underface, recovery holes 10 are opened in the bottom for connecing liquid plate 9, in fill process, it is possible to produce the problems such as leakage, now
It is arranged on the liquid plate 9 that connects immediately below filter element 5 and collects leakage, and by recovery holes 10 by leakage recycling.
Preferably, the height for connecing the in the vertical direction of liquid plate 9 is set by the gradual step-down in center to edge, recovery holes 10
The edge of liquid plate 9 is being connect, recovered liquid baffle plate 12 is fixedly connected on the side for connecing liquid plate 9, connects the height of the in the vertical direction of liquid plate 9
It can rapidly flow to liquid by the design of the gradual step-down in center to edge to connect the edge of liquid plate 9, the edge of liquid plate 9 is connect by being arranged on
Recovery holes 10 reclaim, and recovered liquid baffle plate 12 is fixedly connected on the side for connecing liquid plate 9 and the upper end of recovered liquid baffle plate 12 is in vertical side
To height on higher than connecing height of the outward flange of liquid plate 9 in vertical direction, to prevent liquid from being overflowed on liquid plate 9 from connecing.
As shown in figure 1, also slidably connecting pulling car 11 on the crossbeam 2, the pulling car 11 can be slided along crossbeam 2
Move and draw filter plate 51, pulling car 11 pushes filter plate 51 open, solid material is drawn off one by one.
As shown in figure 1, the outer surface of the crossbeam 2, feedboard 3 and tailgate 4 is respectively provided with one layer of stainless steel layer or fiberglass
Layer, it can effectively prevent magnetic foreign body to be mixed into handled product, improve product quality.
Embodiment 2
The present embodiment provides the filter-press arrangement applied to ternary precursor filtration washing that a kind of embodiment 1 is provided
Application method, specifically, comprise the following steps：
Step 1：Fill process, started shooting after press filtration machine check is errorless, and filter element is compressed using compressed oil cylinder, opened
Material inlet valve and draining valve, the 1 volume slurry to be filtered that volume fraction is 8% is pumped into press filtration simultaneously from feedboard and bottom plate
In machine, when the pressure inside filter press reaches 0.6MPa, stop charging；
Step 2：Washing process, it is 3% to prepare Solute mass fraction, and temperature is 60 DEG C of sodium hydroxide solution, will be configured
Good sodium hydroxide solution is pumped into filter press and carries out alkali lye simultaneously with 0.7 volume flow velocity hourly by feedboard and bottom plate
Wash, after alkali liquid washing 1h, stopping is pumped into sodium hydroxide solution, then passes through purified water with 0.6 volume flow velocity hourly
Feedboard and bottom plate are pumped into filter press simultaneously carries out purifying water washing, and after purifying water washing 3h, stopping is pumped into purified water, in alkali
Liquid is washed with purified water washing process, and the pressure inside filter press is 0.45MPa；
Step 3：Expressing process, press pump to be opened, water under high pressure is pumped into diaphragm plate, the hydraulic pressure of water under high pressure is 1.0MPa,
30min is kept, now drain pipe road stops liquid, and squeezing is completed；
Step 4：Discharge process, the compressed oil cylinder of filter press is unclamped, open pulling car, filter is pushed open one by one, by thing
Material is drawn off, and obtains ternary precursor product.
As can be seen here, the washing pure water usage amount per single ton of product can be controlled in 15m3Within, therefore whole process can be reduced
The use of middle water resource and the discharge of waste water, economize on resources, environment-friendly.
Preferably, step 1 is programmed using PLC to step 4 and carries out automated procedures control, is programmed and carried out using PLC
Automated procedures control whole pressure filtration washing process, can substantially realize and be operated under unmanned state, save human cost.
Embodiment 3
The present embodiment provides the filter-press arrangement applied to ternary precursor filtration washing that a kind of embodiment 1 is provided
Application method, specifically, comprise the following steps：
Step 1：Fill process, started shooting after press filtration machine check is errorless, and filter element is compressed using compressed oil cylinder, opened
Material inlet valve and draining valve, the 1 volume slurry to be filtered that volume fraction is 12% is pumped into pressure simultaneously from feedboard and bottom plate
In filter, when the pressure inside filter press reaches 0.4MPa, stop charging；
Step 2：Washing process, it is 1% to prepare Solute mass fraction, and temperature is 80 DEG C of sodium hydroxide solution, will be configured
Good sodium hydroxide solution is pumped into filter press and carries out alkali lye simultaneously with 0.6 volume flow velocity hourly by feedboard and bottom plate
Wash, after alkali liquid washing 1h, stopping is pumped into sodium hydroxide solution, then passes through purified water with 0.7 volume flow velocity hourly
Feedboard and bottom plate are pumped into filter press simultaneously carries out purifying water washing, and after purifying water washing 3h, stopping is pumped into purified water, in alkali
Liquid is washed with purified water washing process, and the pressure inside filter press is 0.55MPa；
Step 3：Expressing process, press pump to be opened, water under high pressure is pumped into diaphragm plate, the hydraulic pressure of water under high pressure is 1.2MPa,
20min is kept, now drain pipe road stops liquid, and squeezing is completed；
Step 4：Discharge process, the compressed oil cylinder of filter press is unclamped, open pulling car, filter is pushed open one by one, by thing
Material is drawn off, and obtains ternary precursor product.
Embodiment 4
The present embodiment provides the filter-press arrangement applied to ternary precursor filtration washing that a kind of embodiment 1 is provided
Application method, specifically, comprise the following steps：
Step 1：Fill process, started shooting after press filtration machine check is errorless, and filter element is compressed using compressed oil cylinder, opened
Material inlet valve and draining valve, the 1 volume slurry to be filtered that volume fraction is 10% is pumped into pressure simultaneously from feedboard and bottom plate
In filter, when the pressure inside filter press reaches 0.5MPa, stop charging；
Step 2：Washing process, it is 2% to prepare Solute mass fraction, and temperature is 70 DEG C of sodium hydroxide solution, will be configured
Good sodium hydroxide solution is pumped into filter press and carries out alkali simultaneously with 0.65 volume flow velocity hourly by feedboard and bottom plate
Liquid washs, and after alkali liquid washing 1h, stopping is pumped into sodium hydroxide solution, then leads to purified water with 0.65 volume flow velocity hourly
Crossing feedboard and bottom plate while be pumped into filter press and carry out purifying water washing, after purifying water washing 3h, stopping is pumped into purified water,
In alkali liquid washing and purified water washing process, the pressure inside filter press is 0.50MPa；
Step 3：Expressing process, press pump to be opened, water under high pressure is pumped into diaphragm plate, the hydraulic pressure of water under high pressure is 1.1MPa,
25min is kept, now drain pipe road stops liquid, and squeezing is completed；
Step 4：Discharge process, the compressed oil cylinder of filter press is unclamped, open pulling car, filter is pushed open one by one, by thing
Material is drawn off, and obtains ternary precursor product.
Comparative example 1
Take the slurry 10m that volume fraction is 10%3, sampling detection, testing result such as table 1, pressed according to prior art
After filter washing processing, sampling detection, testing result such as table 2.
Table 1
Table 2
Application examples 1
Take with identical volume fraction in comparative example 1 be 10% slurry 10m3, enter according to the method described in embodiment 4
After the processing of row pressure filtration washing, sampling detection, testing result such as table 3.
Table 3
Contrast table 2 and the testing result of table 3 are understood, using the press filtration of ternary precursor filtration washing provided by the present invention
The application method of machine device carries out pressure filtration washing to ternary precursor, can be effective compared to the pressure filtration washing method of prior art
The content of Na and S in product is reduced, improves the final mass of product.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although frame 1, crossbeam 2, feedboard 3, tailgate 4, filter element 5, compressed oil cylinder 6, tail have more been used herein
Plate charging aperture 7, metal hose 8, connect liquid plate 9, recovery holes 10, pulling car 11, recovered liquid baffle plate 12, filter plate 51, filter cloth 52, every
The terms such as diaphragm plate 53, charging aperture a, water inlet b, squeezing mouth c, but it is not precluded from the possibility using other terms.Use these
Term is used for the purpose of more easily describing and explaining the essence of the present invention；It is construed as any additional limitation all
Disagreed with spirit of the present invention.
Claims (10)
1. a kind of filter-press arrangement applied to ternary precursor filtration washing, including integrally formed frame (1) and crossbeam
(2), it is characterised in that：The both ends of crossbeam (2) are connected to feedboard (3) and tailgate (4), wherein feedboard (3) and crossbeam
(2) it is fixedly connected, tailgate (4) is slidably connected with crossbeam (2), and several filter elements are provided between feedboard (3) and tailgate (4)
(5), the filter element (5) is slidably connected with crossbeam (2), and the compressed oil cylinder (6) being fixedly connected with crossbeam (2) is located at crossbeam
(2) close to one end of tailgate (4), the compressed oil cylinder (6) can promote tailgate (4) to be slided towards close to the direction of feedboard (3), tail
Plate (4) side offers tailgate charging aperture (7), and metal hose (8) connects with tailgate charging aperture (7).
2. it is applied to the filter-press arrangement of ternary precursor filtration washing as claimed in claim 1, it is characterised in that：The mistake
Filter unit (5) includes filter (51) and is covered in the filter cloth (52) on filter (51) surface, in addition to is arranged on filter
(51) diaphragm plate (53) between filter cloth (52).
3. it is applied to the filter-press arrangement of ternary precursor filtration washing as claimed in claim 1, it is characterised in that：Also include
It is arranged in frame (1) and connects liquid plate (9), the underface for connecing liquid plate (9) and being located at filter element (5), recovery holes (10) is opened
It is located at the bottom for connecing liquid plate (9).
4. it is applied to the filter-press arrangement of ternary precursor filtration washing as claimed in claim 3, it is characterised in that：It is described to connect
The height of liquid plate (9) in the vertical direction is arranged on the side for connecing liquid plate (9) by the gradual step-down in center to edge, recovery holes (10)
Edge, recovered liquid baffle plate (12) are fixedly connected on the side for connecing liquid plate (9).
5. it is applied to the filter-press arrangement of ternary precursor filtration washing as claimed in claim 2, it is characterised in that：The horizontal stroke
Pulling car (11) is also slidably connected on beam (2), the pulling car (11) can be slided along crossbeam (2) and dilatory filter plate
(51)。
6. it is applied to the filter-press arrangement of ternary precursor filtration washing as claimed in claim 1, it is characterised in that：The horizontal stroke
The outer surface of beam (2), feedboard (3) and tailgate (4) is respectively provided with one layer of stainless steel layer or frp layer.
7. a kind of filter-press arrangement applied to ternary precursor filtration washing according to claim 1-6 any one
Application method, it is characterised in that comprise the following steps：
Step 1：Fill process, started shooting after press filtration machine check is errorless, and filter element is compressed using compressed oil cylinder, open charging
Valve and draining valve, the slurry to be filtered of 1 volume is pumped into filter press simultaneously from feedboard and bottom plate, inside filter press
Pressure when reaching 0.4-0.6MPa, stop charging；
Step 2：Washing process, the sodium hydroxide solution configured is passed through into feedboard with 0.6-0.7 volumes flow velocity hourly
It is pumped into simultaneously in filter press with bottom plate and carries out alkali liquid washing, after alkali liquid washing 1h, stopping is pumped into sodium hydroxide solution, then will be pure
Change water is pumped into filter press and carries out purifying water washing simultaneously with 0.6-0.7 volumes flow velocity hourly by feedboard and bottom plate,
After purifying water washing 3h, stopping is pumped into purified water；
Step 3：Expressing process, press pump to be opened, water under high pressure is pumped into diaphragm plate, the hydraulic pressure of water under high pressure is 1.0-1.2MPa,
20-30min is kept, now drain pipe road stops liquid, and squeezing is completed；
Step 4：Discharge process, the compressed oil cylinder of filter press is unclamped, open pulling car, push filter open one by one, material is unloaded
Go out, obtain ternary precursor product.
8. it is applied to the application method of the filter-press arrangement of ternary precursor filtration washing, its feature as claimed in claim 7
It is：The volume fraction of slurry to be filtered is 8%-12% in step 1.
9. it is applied to the application method of the filter-press arrangement of ternary precursor filtration washing, its feature as claimed in claim 7
It is：Sodium hydroxide solution in step 2 is that temperature is 60-80 DEG C, and Solute mass fraction is that 1%-3% sodium hydroxide is molten
Liquid, for the step 2 in alkali liquid washing and purified water washing process, the pressure inside filter press is 0.45-0.55MPa.
10. it is applied to the application method of the filter-press arrangement of ternary precursor filtration washing, its feature as claimed in claim 7
It is：Na content is 80-100ppm in the ternary precursor product that step 4 obtains, and S content is 800-1000ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112445.9A CN107854876A (en) | 2017-11-13 | 2017-11-13 | Filter-press arrangement and its application method applied to ternary precursor filtration washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112445.9A CN107854876A (en) | 2017-11-13 | 2017-11-13 | Filter-press arrangement and its application method applied to ternary precursor filtration washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107854876A true CN107854876A (en) | 2018-03-30 |
Family
ID=61701529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711112445.9A Pending CN107854876A (en) | 2017-11-13 | 2017-11-13 | Filter-press arrangement and its application method applied to ternary precursor filtration washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107854876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270292A (en) * | 2019-07-15 | 2019-09-24 | 威孔过滤科技（苏州）有限公司 | Ternary precursor filtering and concentrating system and its method for concentration |
-
2017
- 2017-11-13 CN CN201711112445.9A patent/CN107854876A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270292A (en) * | 2019-07-15 | 2019-09-24 | 威孔过滤科技（苏州）有限公司 | Ternary precursor filtering and concentrating system and its method for concentration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2801259Y (en) | Positive pressure gas liquid washing filter | |
| CN203498238U (en) | Sludge dewatering machine | |
| CN208145542U (en) | A kind of filter press | |
| CN208980475U (en) | A kind of wastewater treatment equipment of the production of lithium battery containing N-Methyl pyrrolidone | |
| CN107854876A (en) | Filter-press arrangement and its application method applied to ternary precursor filtration washing | |
| CN206985914U (en) | A kind of rural domestic sewage treatment pond | |
| CN207822585U (en) | Filter-press arrangement applied to ternary precursor filtration washing | |
| CN207057148U (en) | One kind machining waste iron filing cleaning device | |
| CN202490479U (en) | Circulating piping system for filter pressing working section | |
| CN203235307U (en) | Sealed filter with residual liquor recovery function | |
| CN114522966A (en) | Recovery system and recovery method of nickel cobalt hydroxide | |
| CN210186526U (en) | Solid hazardous waste nickel, cadmium refine with multistage suction filter device | |
| CN219314894U (en) | Intelligent fermenting, clarifying and squeezing machine | |
| CN221535741U (en) | Gas-liquid separation device of filter press | |
| CN206334440U (en) | One kind precipitation sheet frame pressure-filtering deslagging system | |
| CN203004342U (en) | Rinsing device in squeezing machine | |
| CN202724815U (en) | Filter | |
| CN210645292U (en) | Pressure filter device that stearate was used | |
| CN219540324U (en) | Tungsten smelting integrated ion exchange device | |
| CN209468517U (en) | A kind of production equipment of electrolytic aluminum foil | |
| CN220245678U (en) | Solid-liquid separation system of iodine-containing acetic acid waste liquid | |
| CN209123937U (en) | The absorption reuse means of active carbon in a kind of production process | |
| CN204400736U (en) | A kind of acid regeneration equipment | |
| CN211357913U (en) | Double filter element type filter | |
| CN214714513U (en) | Processing apparatus for trace iron is got rid of through extraction to cobalt nickel solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180330 |
|
| WD01 | Invention patent application deemed withdrawn after publication |