CN109279665A - A kind of processing method of nickle cobalt lithium manganate ternary waste material - Google Patents

A kind of processing method of nickle cobalt lithium manganate ternary waste material Download PDF

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CN109279665A
CN109279665A CN201811066427.6A CN201811066427A CN109279665A CN 109279665 A CN109279665 A CN 109279665A CN 201811066427 A CN201811066427 A CN 201811066427A CN 109279665 A CN109279665 A CN 109279665A
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cobalt
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CN109279665B (en
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郑忆依
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China Combustion Energy Environmental Energy (Shandong) Co.,Ltd.
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Abstract

The invention discloses a kind of processing methods of nickle cobalt lithium manganate ternary waste material.Ternary waste material is added into alkali soluble solution, amphoteric metal aluminium etc. is dissolved into solution, realize the separation of aluminium and other components, the solid after separation aluminium is restored into furnace reduction again, substance after reduction adds pure water, lithia is dissolved in hot pure water and obtains lithium hydroxide, to realize the separation between lithium and nickel cobalt manganese, by controlling the additional amount of sulfuric acid and the pH of final process and terminal, to realize the separation of the metals such as the stronger manganese metal of activity and nickel cobalt, slag after separating manganese is after pulp, by electromagnetic separation, add dissolving with hydrochloric acid, obtained nickel and cobalt solution is passed through chlorine under certain temperature and pressure, so that cobalt ions oxydrolysis is trivalent cobalt precipitating, to realize the separation of nickel cobalt.Process of the present invention is short, and waste water yield is few, and material recovery rate is high, and obtained product is LITHIUM BATTERY, and added value of product is high.

Description

A kind of processing method of nickle cobalt lithium manganate ternary waste material
Technical field
The present invention relates to a kind of processing methods of nickle cobalt lithium manganate ternary waste material, belong to waste recycling field.
Background technique
As the adjustment of national policy, vehicle look forward to the raising to course continuation mileage demand, battery enterprise is laid out ternary battery one after another Business.Nickle cobalt lithium manganate with relatively inexpensive nickel and manganese instead of in cobalt acid lithium 2/3rds or more cobalt, advantage in terms of cost It is clearly compared with other lithium cell anode material lithium manganates, LiFePO 4, nickel-cobalt lithium manganate material and cobalt acid lithium It is very close in terms of chemical property and processing performance, so that nickel-cobalt lithium manganate material becomes new battery material and gradually takes For cobalt acid lithium, become the favorite of lithium ion battery material of new generation.
2015, the annual sales amount of New-energy electric vehicle was more than 33.11 ten thousand, and was produced in new-energy automobile in 2016 Sales volume is more than 50.7 ten thousand, and there are about 50% for year-on-year speedup.The service life of lithium ion battery is generally 3~5 years, with lithium-ion electric The production and consumption in pond, will certainly generate a large amount of waste and old lithium ion battery, if to these waste and old lithium ion batteries set no Reason, certainly will will cause the waste of very important resource and generate a large amount of harmful substance.Specific manifestation is as follows:
First is that containing there are many valuable metals, such as cobalt, nickel, aluminium, lithium in waste and old lithium ion battery.For cobalt aspect, China 95% cobalt be from external import, and the whole world cobalt yield have 150,000 tons, this 150,000 ton-mile face, which has 80%, to be got by recycling 's;
Second is that the various heavy (such as cobalt, nickel) contained in waste and old lithium ion battery, electrolyte (lithium hexafluoro phosphate etc.), These heavy metals and organic matter all can cause huge harm to the health of natural environment and the mankind;
Third is that the diaphragm, shell etc. in waste and old lithium ion battery belong to nondegradable waste, if without having The processing of effect is just piled up arbitrarily, and a large amount of noxious waste pollution and serious air pollution will certainly be brought to environment.
In conclusion the recycling of waste and old lithium ion battery is very important, for the recycling of ternary lithium battery, due to just Containing valuable metals such as lithium, cobalt, nickel in the material of pole, recovery value is huge, so by everybody attention.
For the processing of nickle cobalt lithium manganate ternary waste material, sulfuric acid and reducing agent dissolution is generally added in conventional technique, so Afterwards by elements such as P204 extraction and separation MnZns therein, nickel salt and cobalt salt, raffinate warp are obtained using P507 extraction and separation It crosses precipitating and recycles lithium therein, this process is very long, and equipment investment is big, and waste water yield is more, and the rate of recovery is low, and due to nickel cobalt manganese Content it is suitable, extraction series is especially long.
Summary of the invention
In view of this, process is short the present invention provides a kind of processing method of nickle cobalt lithium manganate ternary waste material, waste water is generated Amount is few, and material recovery rate is high, and obtained product is LITHIUM BATTERY, can return to the raw material for doing ternary anode material of lithium battery.
The present invention solves above-mentioned technical problem by following technological means:
A kind of processing method of nickle cobalt lithium manganate ternary waste material of the invention, is following steps:
(1) aqueous slkali being added in nickle cobalt lithium manganate ternary waste material, impregnated 4-6 hours, soaking temperature is 50-65 DEG C, filtering, It obtains containing aluminum solutions and filter residue, filter residue is dried and sieved after washing, and screenings is put into reduction furnace and is restored, reduction temperature Degree is 330-450 DEG C, and the recovery time is 6-9 hours, and discharging obtains cooling material after then cooling down;
(2) by cooling expect that hot pure water stirring is added, maintaining the temperature of whipping process is 90-95 DEG C, mixing time 3-4 Hour, it is separated by solid-liquid separation, obtains filtrate containing lithium and filter residue, filter residue is mixed with filtrate containing lithium after washing, by cleaning solution;
(3) sulfuric acid solution pulp is added in filter residue after the washing for obtaining step (2), and the concentration of sulfuric acid solution is 1- 2mol/ L, the ratio between the molal quantity of manganese is 0.9-0.95:1 in filter residue after sulfuric acid is added and washs, when the pH of reaction to solution is greater than 6.5, Continuously adding sulfuric acid and maintaining the pH of reaction is 6-6.5, is stirred to react at this ph, is 20-50mg/L to the cobalt content in solution When, stop reaction, filtering obtains manganese containing solution and cobalt nickel slag, and cobalt nickel slag obtains cobalt nickel washed-residue by washing, cleaning solution with contain Manganese solution mixing;
(4) after cobalt nickel washed-residue adds water slurry, by electromagnetic separation, magnetic separation material is obtained, hydrochloric acid solution is added in magnetic separation material, Temperature is to be stirred to react 3-4 hours at 60-80 DEG C, is then filtered, and the first filtrate and the first filter residue are obtained, and the first filtrate is added anti- It answering in kettle, then it is 140-160 DEG C in temperature that adjusting pH, which is 1.8-2.5, it is passed through chlorine and pressure is made to be 1.5-2 atmospheric pressure, It reacts under this atmospheric pressure 3-5 hours, is filtered after then cooling down release, obtain cobalt precipitating and nickel solution, nickel solution is by concentration Crystallization obtains LITHIUM BATTERY nickel chloride, and cobalt precipitating is added sulfuric acid solution, adds reducing agent, it is molten to obtain cobaltous sulfate after being completely dissolved Liquid obtains battery grade cobalt sulfate crystal by condensation crystallization;
(5) ammonium bicarbonate soln is added in filtrate containing lithium, and the pH for adjusting solution is 7.2-7.5, and reaction temperature is taken the photograph for 35-45 Family name's degree, is then filtered, and obtains battery-level lithium carbonate;
(6) manganese containing solution obtains LITHIUM BATTERY manganese sulfate by condensing crystallizing, and the mother liquor after crystallization is passed through hydrogen sulfide gas, will After nickel cobalt content therein is reduced to 10ppm or less, filtering, filter residue is back in reduction furnace, and filtrate returns mixed with manganese containing solution It closes.
The concentration of step (1) aqueous slkali is 3-5mol/L, is passed through carbon dioxide containing aluminum solutions, adjusts the pH of solution For 9-10, by filtering and washing obtains aluminium hydroxide.
Cooling material and the mass ratio of hot pure water are 1:4-5 in the step (2), and washing is washed using four-stage counter-current.
The concentration of hydrochloric acid solution is 1.5-2mol/L in the step (4).
The concentration of ammonium bicarbonate soln is 2-3mol/L in the step (5), and the time that ammonium bicarbonate soln is added is 1.5-2 hours, the filtrate obtained after filtering obtained ammonium fertilizer by condensing crystallizing.
The Baume degrees for being concentrated into solution in the step (6) when condensing crystallizing is 49-51, is then cooled down, rate of temperature fall is 2-3 DEG C/h, being cooled to temperature is 10-15 DEG C, is centrifuged using decanter centrifuge.
The reducing agent that the step (1) uses when restoring is at least one of hydrogen, methane, carbon monoxide, water-gas.
The present invention handles nickle cobalt lithium manganate ternary waste material, first uses alkali soluble solution, amphoteric metal aluminium etc. is dissolved into solution, Using separation of solid and liquid, the separation of aluminium and other components is realized, then the solid after separation aluminium is restored into furnace reduction, due to lithium For active metal, cannot be restored by reducing gas such as hydrogen, and nickel cobalt manganese etc. can be reduced, the substance after reduction adds pure Water washing, lithia is dissolved in hot pure water and obtains lithium hydroxide, and the metals such as cobalt nickel manganese are insoluble, to realize lithium and nickel cobalt Separation between manganese.
Sulfuric acid is added in slag after separation, following reaction occurs:
Mn+H2SO4----MnSO4+H2
M+H2SO4----MSO4+H2(M Ni/Co)
Mn+MSO4----M+MnSO4(M Ni/Co)
By controlling the additional amount of sulfuric acid and the pH of final process and terminal, to realize the stronger metal of activity The separation of the metals such as manganese and nickel cobalt, wherein dissolution reaction and displacement reaction has occurred, obtained manganese solution is obtained by condensing crystallizing To LITHIUM BATTERY manganese sulfate, the mother liquor after condensing crystallizing returns after hydrogen persulfide is except nickel cobalt to be used, obtained a small amount of removal of impurities slag It comes back for restoring.
Slag after separating manganese is after pulp, by electromagnetic separation, by the metal powders such as magnetic nickel cobalt with Do not have the separation such as magnetic other impurities such as copper, lead, adds dissolving with hydrochloric acid, obtained nickel and cobalt solution is in certain temperature and pressure It is passed through chlorine under power, so that cobalt ions oxydrolysis is trivalent cobalt precipitating, and nickel can not be oxidized at this ph, to realize The separation of nickel cobalt, obtained nickel solution obtain LITHIUM BATTERY nickel chloride crystal by condensing crystallizing, and sulphur is added in obtained cobalt precipitating Acid solution and reducing agent, dissolution obtain cobalt sulfate solution, obtain battery grade cobalt sulfate using condensing crystallizing.
Ammonium hydrogen carbonate is added in obtained lithium hydroxide, obtains battery-level lithium carbonate by precipitating, mother liquor passes through condensing crystallizing Ammonium fertilizer is obtained, whole process does not generate waste water, condensing crystallizing mistake in addition to the recycling of aluminium generates waste water outlet substantially elsewhere The vapor that journey generates can obtain pure water by condensing recovery, return and use, waste water yield is few, and realizes complete group Point, such as the recycling of aluminium, nickel, cobalt, manganese, lithium.
Compare other techniques, this process flow is short, and the rate of recovery of component is high, and the solid waste of generation is few, obtains electricity Lithium carbonate, cobaltous sulfate, nickel chloride and the manganese sulfate of pond grade, can return to and prepare nickel-cobalt lithium manganate cathode material again, reached circulation The purpose of reconstruction.
This process flow is short, and can be realized all components, such as the recycling and utilization of aluminium foil, phosphate, molysite, lithium salts, Available aluminium hydroxide, iron oxide red, battery grade lithium phosphate and hydrophosphate, the rate of recovery is high, at low cost, value-added content of product It is high.
Beneficial effects of the present invention: process is short, and waste water yield is few, and material recovery rate is high, and obtained product is battery Grade, can return to the raw material for doing ternary anode material of lithium battery.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the SEM for the aluminium hydroxide that the embodiment of the present invention 1 obtains.
Specific embodiment
Below with reference to attached drawing, the present invention is described in detail, a kind of nickle cobalt lithium manganate ternary waste material of the present embodiment Processing method is following steps:
(1) aqueous slkali being added in nickle cobalt lithium manganate ternary waste material, impregnated 4-6 hours, soaking temperature is 50-65 DEG C, filtering, It obtains containing aluminum solutions and filter residue, filter residue is dried and sieved after washing, and screenings is put into reduction furnace and is restored, reduction temperature Degree is 330-450 DEG C, and the recovery time is 6-9 hours, and discharging obtains cooling material after then cooling down;
(2) by cooling expect that hot pure water stirring is added, maintaining the temperature of whipping process is 90-95 DEG C, mixing time 3-4 Hour, it is separated by solid-liquid separation, obtains filtrate containing lithium and filter residue, filter residue is mixed with filtrate containing lithium after washing, by cleaning solution;
(3) sulfuric acid solution pulp is added in filter residue after the washing for obtaining step (2), and the concentration of sulfuric acid solution is 1- 2mol/ L, the ratio between the molal quantity of manganese is 0.9-0.95:1 in filter residue after sulfuric acid is added and washs, when the pH of reaction to solution is greater than 6.5, Continuously adding sulfuric acid and maintaining the pH of reaction is 6-6.5, is stirred to react at this ph, is 20-50mg/L to the cobalt content in solution When, stop reaction, filtering obtains manganese containing solution and cobalt nickel slag, and cobalt nickel slag obtains cobalt nickel washed-residue by washing, cleaning solution with contain Manganese solution mixing;
(4) after cobalt nickel washed-residue adds water slurry, by electromagnetic separation, magnetic separation material is obtained, hydrochloric acid solution is added in magnetic separation material, Temperature is to be stirred to react 3-4 hours at 60-80 DEG C, is then filtered, and the first filtrate and the first filter residue are obtained, and the first filtrate is added anti- It answering in kettle, then it is 140-160 DEG C in temperature that adjusting pH, which is 1.8-2.5, it is passed through chlorine and pressure is made to be 1.5-2 atmospheric pressure, It reacts under this atmospheric pressure 3-5 hours, is filtered after then cooling down release, obtain cobalt precipitating and nickel solution, nickel solution is by concentration Crystallization obtains LITHIUM BATTERY nickel chloride, and cobalt precipitating is added sulfuric acid solution, adds reducing agent, it is molten to obtain cobaltous sulfate after being completely dissolved Liquid obtains battery grade cobalt sulfate crystal by condensation crystallization;
(5) ammonium bicarbonate soln is added in filtrate containing lithium, and the pH for adjusting solution is 7.2-7.5, and reaction temperature is taken the photograph for 35-45 Family name's degree, is then filtered, and obtains battery-level lithium carbonate;
(6) manganese containing solution obtains LITHIUM BATTERY manganese sulfate by condensing crystallizing, and the mother liquor after crystallization is passed through hydrogen sulfide gas, will After nickel cobalt content therein is reduced to 10ppm or less, filtering, filter residue is back in reduction furnace, and filtrate returns mixed with manganese containing solution It closes.
The concentration of step (1) aqueous slkali is 3-5mol/L, is passed through carbon dioxide containing aluminum solutions, adjusts the pH of solution For 9-10, by filtering and washing obtains aluminium hydroxide.
Cooling material and the mass ratio of hot pure water are 1:4-5 in the step (2), and washing is washed using four-stage counter-current.
The concentration of hydrochloric acid solution is 1.5-2mol/L in the step (4).
The concentration of ammonium bicarbonate soln is 2-3mol/L in the step (5), and the time that ammonium bicarbonate soln is added is 1.5-2 hours, the filtrate obtained after filtering obtained ammonium fertilizer by condensing crystallizing.
The Baume degrees for being concentrated into solution in the step (6) when condensing crystallizing is 49-51, is then cooled down, rate of temperature fall is 2-3 DEG C/h, being cooled to temperature is 10-15 DEG C, is centrifuged using decanter centrifuge.
The reducing agent that the step (1) uses when restoring is at least one of hydrogen, methane, carbon monoxide, water-gas.
Embodiment 1
A kind of processing method of nickle cobalt lithium manganate ternary waste material, is following steps:
(1) aqueous slkali is added in nickle cobalt lithium manganate ternary waste material, impregnated 5 hours, soaking temperature is 59 DEG C, and filtering obtains Containing aluminum solutions and filter residue, filter residue is dried and is sieved after washing, and screenings is put into reduction furnace and is restored, and reduction temperature is 420 DEG C, the recovery time is 8 hours, and discharging obtains cooling material after then cooling down;
(2) by cooling expect that hot pure water stirring is added, maintaining the temperature of whipping process is 93 DEG C, and mixing time is 3.5 hours, It is separated by solid-liquid separation, obtains filtrate containing lithium and filter residue, filter residue is mixed with filtrate containing lithium after washing, by cleaning solution;
(3) sulfuric acid solution pulp is added in filter residue after the washing for obtaining step (2), and the concentration of sulfuric acid solution is 1.5mol/ L, the ratio between molal quantity that sulfuric acid and manganese in filter residue after washing is added is 0.93:1, when the pH of reaction to solution is greater than 6.5, continues to add Entering sulfuric acid to maintain the pH of reaction is 6-6.5, is stirred to react at this ph, when the cobalt content in solution is 30mg/L, is stopped anti- It answers, filters, obtain manganese containing solution and cobalt nickel slag, cobalt nickel slag obtains cobalt nickel washed-residue by washing, and cleaning solution and manganese containing solution are mixed It closes;
(4) after cobalt nickel washed-residue adds water slurry, by electromagnetic separation, magnetic separation material is obtained, hydrochloric acid solution is added in magnetic separation material, Temperature is to be stirred to react 3.5 hours at 70 DEG C, is then filtered, and the first filtrate and the first filter residue are obtained, and reaction is added in the first filtrate In kettle, adjusting pH is 1.95, is then 155 DEG C in temperature, is passed through chlorine and pressure is made to be 1.8 atmospheric pressure, in this atmospheric pressure Lower reaction 4.5 hours, is filtered after then cooling down release, obtains cobalt precipitating and nickel solution, and nickel solution obtains electricity by condensing crystallizing Pond grade nickel chloride, cobalt precipitating is added sulfuric acid solution, adds reducing agent, obtain cobalt sulfate solution after being completely dissolved, by condensation Crystallization obtains battery grade cobalt sulfate crystal;
(5) ammonium bicarbonate soln is added in filtrate containing lithium, and the pH for adjusting solution is 7.3, and reaction temperature is 42 degrees Celsius, then Filtering, obtains battery-level lithium carbonate;
(6) manganese containing solution obtains LITHIUM BATTERY manganese sulfate by condensing crystallizing, and the mother liquor after crystallization is passed through hydrogen sulfide gas, will After nickel cobalt content therein is reduced to 10ppm or less, filtering, filter residue is back in reduction furnace, and filtrate returns mixed with manganese containing solution It closes.
The concentration of step (1) aqueous slkali is 4.2mol/L, is passed through carbon dioxide containing aluminum solutions, adjusts the pH of solution It is 9.5, by filtering and washing obtains aluminium hydroxide.
Cooling material and the mass ratio of hot pure water are 1:4.5 in the step (2), and washing is washed using four-stage counter-current.
The concentration of hydrochloric acid solution is 1.8mol/L in the step (4),.
The concentration of ammonium bicarbonate soln is 2.3mol/L in the step (5), and the time that ammonium bicarbonate soln is added is 1.8 hours, the filtrate obtained after filtering obtained ammonium fertilizer by condensing crystallizing.
The Baume degrees for being concentrated into solution in the step (6) when condensing crystallizing is 49.5, is then cooled down, rate of temperature fall is 2.5 DEG C/h, being cooled to temperature is 13 DEG C, is centrifuged using decanter centrifuge.
The reducing agent that the step (1) uses when restoring is hydrogen.
The rate of recovery of final lithium is 99.3%, and the rate of recovery of cobalt is 98.9%, and the rate of recovery of nickel is 99.1%, the recycling of manganese Rate is 99.3%, and the rate of recovery of aluminium is 99.4%,
As shown in Figure 1, obtained aluminium hydroxide is cotton-shaped aggregate structure, large specific surface area, primary particle size is small, finally obtains Aluminium hydroxide detection data it is as follows:
The detection data of obtained battery grade cobalt sulfate is as follows:
Index Main content Fe Mn Zn Ca Mg Na
Numerical value 99.63% 2.5ppm 21ppm 4ppm 31ppm 21ppm 25ppm
K Pb Ni As Cu Cd Water-insoluble Cl
12ppm 2ppm 39ppm 0.2ppm 1.5ppm 2.3ppm 45ppm 12ppm
The detection data of obtained LITHIUM BATTERY nickel chloride is as follows:
Index Main content Fe Mn Zn Ca Mg Na
Numerical value 99.51% 2.5ppm 24ppm 2ppm 21ppm 13ppm 21ppm
K Pb Co As Cu Cd Water-insoluble pH
12ppm 1ppm 42ppm 0.3ppm 2.1ppm 2.1ppm 35ppm 4.6
The detection data of LITHIUM BATTERY manganese sulfate is as follows:
The detection data of battery-level lithium carbonate is as follows:
Embodiment 2
A kind of processing method of nickle cobalt lithium manganate ternary waste material, is following steps:
(1) aqueous slkali is added in nickle cobalt lithium manganate ternary waste material, impregnated 4.5 hours, soaking temperature is 58 DEG C, and filtering obtains To aluminum solutions and filter residue is contained, filter residue is dried and is sieved after washing, and screenings is put into reduction furnace and is restored, reduction temperature It is 415 DEG C, the recovery time is 8 hours, and discharging obtains cooling material after then cooling down;
(2) by cooling expect that hot pure water stirring is added, maintaining the temperature of whipping process is 93 DEG C, and mixing time is 3.5 hours, It is separated by solid-liquid separation, obtains filtrate containing lithium and filter residue, filter residue is mixed with filtrate containing lithium after washing, by cleaning solution;
(3) sulfuric acid solution pulp is added in filter residue after the washing for obtaining step (2), and the concentration of sulfuric acid solution is 1.5mol/ L, the ratio between molal quantity that sulfuric acid and manganese in filter residue after washing is added is 0.93:1, when the pH of reaction to solution is greater than 6.5, continues to add Entering sulfuric acid to maintain the pH of reaction is 6-6.5, is stirred to react at this ph, when the cobalt content in solution is 35mg/L, is stopped anti- It answers, filters, obtain manganese containing solution and cobalt nickel slag, cobalt nickel slag obtains cobalt nickel washed-residue by washing, and cleaning solution and manganese containing solution are mixed It closes;
(4) after cobalt nickel washed-residue adds water slurry, by electromagnetic separation, magnetic separation material is obtained, hydrochloric acid solution is added in magnetic separation material, Temperature is to be stirred to react 3.5 hours at 75 DEG C, is then filtered, and the first filtrate and the first filter residue are obtained, and reaction is added in the first filtrate In kettle, adjusting pH is 1.95, is then 155 DEG C in temperature, is passed through chlorine and pressure is made to be 1.8 atmospheric pressure, in this atmospheric pressure Lower reaction 4.5 hours, is filtered after then cooling down release, obtains cobalt precipitating and nickel solution, and nickel solution obtains electricity by condensing crystallizing Pond grade nickel chloride, cobalt precipitating is added sulfuric acid solution, adds reducing agent, obtain cobalt sulfate solution after being completely dissolved, by condensation Crystallization obtains battery grade cobalt sulfate crystal;
(5) ammonium bicarbonate soln is added in filtrate containing lithium, and the pH for adjusting solution is 7.42, and reaction temperature is 39 degrees Celsius, so After filter, obtain battery-level lithium carbonate;
(6) manganese containing solution obtains LITHIUM BATTERY manganese sulfate by condensing crystallizing, and the mother liquor after crystallization is passed through hydrogen sulfide gas, will After nickel cobalt content therein is reduced to 10ppm or less, filtering, filter residue is back in reduction furnace, and filtrate returns mixed with manganese containing solution It closes.
The concentration of step (1) aqueous slkali is 4.5mol/L, is passed through carbon dioxide containing aluminum solutions, adjusts the pH of solution It is 9.5, by filtering and washing obtains aluminium hydroxide.
Cooling material and the mass ratio of hot pure water are 1:4.3 in the step (2), and washing is washed using four-stage counter-current.
The concentration of hydrochloric acid solution is 1.8mol/L in the step (4).
The concentration of ammonium bicarbonate soln is 2.6mol/L in the step (5), and the time that ammonium bicarbonate soln is added is 1.8 hours, the filtrate obtained after filtering obtained ammonium fertilizer by condensing crystallizing.
The Baume degrees for being concentrated into solution in the step (6) when condensing crystallizing is 50.3, is then cooled down, rate of temperature fall is 2.4 DEG C/h, being cooled to temperature is 13 DEG C, is centrifuged using decanter centrifuge.
The reducing agent that the step (1) uses when restoring is hydrogen.
The rate of recovery of final lithium is 99.3%, and the rate of recovery of cobalt is 98.7%, and the rate of recovery of nickel is 99.1%, the recycling of manganese Rate is 99.3%, and the rate of recovery of aluminium is 99.4%,
Finally obtained aluminium hydroxide detection data is as follows:
The detection data of obtained battery grade cobalt sulfate is as follows:
Index Main content Fe Mn Zn Ca Mg Na
Numerical value 99.61% 4ppm 18ppm 3ppm 25ppm 20ppm 21ppm
K Pb Ni As Cu Cd Water-insoluble Cl
8ppm 2ppm 35ppm 0.2ppm 1.5ppm 2.1ppm 41ppm 11ppm
The detection data of obtained LITHIUM BATTERY nickel chloride is as follows:
Index Main content Fe Mn Zn Ca Mg Na
Numerical value 99.54% 2.9ppm 32ppm 2ppm 22ppm 11ppm 21ppm
K Pb Co As Cu Cd Water-insoluble pH
11ppm 1ppm 41ppm 0.3ppm 2.4ppm 2.6ppm 39ppm 4.5
The detection data of LITHIUM BATTERY manganese sulfate is as follows:
Index Mn Fe Ni Zn Ca Mg Na
Numerical value 32.2% 4ppm 23ppm 1ppm 13ppm 15ppm 21ppm
K Pb Co As Cu Cd Water-insoluble pH
11ppm 0.2ppm 21ppm 0.2ppm 2ppm 2.1ppm 41ppm 5.8
The detection data of battery-level lithium carbonate is as follows:
Embodiment 3
A kind of processing method of nickle cobalt lithium manganate ternary waste material, is following steps:
(1) aqueous slkali is added in nickle cobalt lithium manganate ternary waste material, impregnated 4.8 hours, soaking temperature is 63 DEG C, and filtering obtains To aluminum solutions and filter residue is contained, filter residue is dried and is sieved after washing, and screenings is put into reduction furnace and is restored, reduction temperature It is 425 DEG C, the recovery time is 8 hours, and discharging obtains cooling material after then cooling down;
(2) by cooling expect that hot pure water stirring is added, maintaining the temperature of whipping process is 93 DEG C, and mixing time is 3.5 hours, It is separated by solid-liquid separation, obtains filtrate containing lithium and filter residue, filter residue is mixed with filtrate containing lithium after washing, by cleaning solution;
(3) sulfuric acid solution pulp is added in filter residue after the washing for obtaining step (2), and the concentration of sulfuric acid solution is 1.7mol/ L, the ratio between molal quantity that sulfuric acid and manganese in filter residue after washing is added is 0.93:1, when the pH of reaction to solution is greater than 6.5, continues to add Entering sulfuric acid to maintain the pH of reaction is 6-6.5, is stirred to react at this ph, when the cobalt content in solution is 30mg/L, is stopped anti- It answers, filters, obtain manganese containing solution and cobalt nickel slag, cobalt nickel slag obtains cobalt nickel washed-residue by washing, and cleaning solution and manganese containing solution are mixed It closes;
(4) after cobalt nickel washed-residue adds water slurry, by electromagnetic separation, magnetic separation material is obtained, hydrochloric acid solution is added in magnetic separation material, Temperature is to be stirred to react 3.5 hours at 69 DEG C, is then filtered, and the first filtrate and the first filter residue are obtained, and reaction is added in the first filtrate In kettle, adjusting pH is 1.9, is then 155 DEG C in temperature, is passed through chlorine and pressure is made to be 1.8 atmospheric pressure, under this atmospheric pressure Reaction 4.5 hours is filtered after then cooling down release, obtains cobalt precipitating and nickel solution, and nickel solution obtains battery by condensing crystallizing Grade nickel chloride, cobalt precipitating are added sulfuric acid solution, add reducing agent, obtain cobalt sulfate solution after being completely dissolved, tie by condensation Crystalline substance obtains battery grade cobalt sulfate crystal;
(5) ammonium bicarbonate soln is added in filtrate containing lithium, and the pH for adjusting solution is 7.4, and reaction temperature is 44 degrees Celsius, then Filtering, obtains battery-level lithium carbonate;
(6) manganese containing solution obtains LITHIUM BATTERY manganese sulfate by condensing crystallizing, and the mother liquor after crystallization is passed through hydrogen sulfide gas, will After nickel cobalt content therein is reduced to 10ppm or less, filtering, filter residue is back in reduction furnace, and filtrate returns mixed with manganese containing solution It closes.
The concentration of step (1) aqueous slkali is 4.5mol/L, is passed through carbon dioxide containing aluminum solutions, adjusts the pH of solution It is 9.7, by filtering and washing obtains aluminium hydroxide.
Cooling material and the mass ratio of hot pure water are 1:4.7 in the step (2), and washing is washed using four-stage counter-current.
The concentration of hydrochloric acid solution is 1.8mol/L in the step (4).
The concentration of ammonium bicarbonate soln is 2.7mol/L in the step (5), and the time that ammonium bicarbonate soln is added is 1.7 hours, the filtrate obtained after filtering obtained ammonium fertilizer by condensing crystallizing.
The Baume degrees for being concentrated into solution in the step (6) when condensing crystallizing is 50.5, is then cooled down, rate of temperature fall is 2.5 DEG C/h, being cooled to temperature is 13 DEG C, is centrifuged using decanter centrifuge.
The reducing agent that the step (1) uses when restoring is methane.
The rate of recovery of final lithium is 99.2%, and the rate of recovery of cobalt is 99.1%, and the rate of recovery of nickel is 99.3%, the recycling of manganese Rate is 99.2%, and the rate of recovery of aluminium is 99.3%,
Finally obtained aluminium hydroxide detection data is as follows:
The detection data of obtained battery grade cobalt sulfate is as follows:
Index Main content Fe Mn Zn Ca Mg Na
Numerical value 99.61% 2ppm 23ppm 4ppm 21ppm 26ppm 23ppm
K Pb Ni As Cu Cd Water-insoluble Cl
21ppm 1ppm 34ppm 0.3ppm 1.4ppm 2.1ppm 43ppm 12ppm
The detection data of obtained LITHIUM BATTERY nickel chloride is as follows:
The detection data of LITHIUM BATTERY manganese sulfate is as follows:
Index Mn Fe Ni Zn Ca Mg Na
Numerical value 32.3% 4ppm 20ppm 1ppm 8ppm 11ppm 27ppm
K Pb Co As Cu Cd Water-insoluble pH
12ppm 0.2ppm 33ppm 0.3ppm 2.7ppm 2.1ppm 49ppm 5.8
The detection data of battery-level lithium carbonate is as follows:
From the point of view of detection data, the aluminium hydroxide of preparation can be used for flame retardant fillers, other are such as lithium carbonate, nickel chloride, sulphur Sour cobalt and manganese sulfate are LITHIUM BATTERY.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this In the scope of the claims of invention.

Claims (7)

1. a kind of processing method of nickle cobalt lithium manganate ternary waste material, which is characterized in that be following steps:
(1) aqueous slkali is added in nickle cobalt lithium manganate ternary waste material, impregnated 4-6 hours, soaking temperature is 50-65 DEG C, and filtering obtains Containing aluminum solutions and filter residue, filter residue is dried and is sieved after washing, and screenings is put into reduction furnace and is restored, and reduction temperature is 330-450 DEG C, the recovery time is 6-9 hours, and discharging obtains cooling material after then cooling down;
(2) by cooling expect that hot pure water stirring is added, maintaining the temperature of whipping process is 90-95 DEG C, and mixing time is 3-4 hours, It is separated by solid-liquid separation, obtains filtrate containing lithium and filter residue, filter residue is mixed with filtrate containing lithium after washing, by cleaning solution;
(3) sulfuric acid solution pulp is added in filter residue after the washing for obtaining step (2), and the concentration of sulfuric acid solution is 1-2mol/L, adds Enter the ratio between sulfuric acid and molal quantity of manganese in filter residue after washing for 0.9-0.95:1, when reacting to the pH of solution greater than 6.5, continues to add Entering sulfuric acid to maintain the pH of reaction is 6-6.5, is stirred to react, when the cobalt content in solution is 20-50mg/L, stops at this ph Reaction, filtering obtain manganese containing solution and cobalt nickel slag, and cobalt nickel slag obtains cobalt nickel washed-residue, cleaning solution and manganese containing solution by washing Mixing;
(4) after cobalt nickel washed-residue adds water slurry, by electromagnetic separation, magnetic separation material is obtained, hydrochloric acid solution is added in magnetic separation material, in temperature It is to be stirred to react at 60-80 DEG C 3-4 hours, then filters, obtain the first filtrate and the first filter residue, reaction kettle is added in the first filtrate Interior, adjusting pH is 1.8-2.5, is then 140-160 DEG C in temperature, is passed through chlorine and pressure is made to be 1.5-2 atmospheric pressure, herein It reacts under atmospheric pressure 3-5 hours, is filtered after then cooling down release, obtain cobalt precipitating and nickel solution, nickel solution passes through condensing crystallizing LITHIUM BATTERY nickel chloride is obtained, cobalt precipitating is added sulfuric acid solution, adds reducing agent, cobalt sulfate solution is obtained after being completely dissolved, passes through It crosses condensation crystallization and obtains battery grade cobalt sulfate crystal;
(5) ammonium bicarbonate soln is added in filtrate containing lithium, and the pH for adjusting solution is 7.2-7.5, and reaction temperature is 35-45 degrees Celsius, Then it filters, obtains battery-level lithium carbonate;
(6) manganese containing solution obtains LITHIUM BATTERY manganese sulfate by condensing crystallizing, and the mother liquor after crystallization is passed through hydrogen sulfide gas, will wherein Nickel cobalt content be reduced to 10ppm or less after, filtering, filter residue is back in reduction furnace, and filtrate returns and mixes with manganese containing solution.
2. a kind of processing method of nickle cobalt lithium manganate ternary waste material according to claim 1, it is characterised in that: the step (1) concentration of aqueous slkali be 3-5mol/L, be passed through carbon dioxide containing aluminum solutions, adjust solution pH be 9-10, by filtering and Washing obtains aluminium hydroxide.
3. a kind of processing method of nickle cobalt lithium manganate ternary waste material according to claim 1, it is characterised in that: the step (2) cooling material and the mass ratio of hot pure water are 1:4-5 in, and washing is washed using four-stage counter-current.
4. a kind of processing method of nickle cobalt lithium manganate ternary waste material according to claim 1, it is characterised in that: the step (4) concentration of hydrochloric acid solution is 1.5-2mol/L in.
5. a kind of processing method of nickle cobalt lithium manganate ternary waste material according to claim 1, it is characterised in that: the step (5) concentration of ammonium bicarbonate soln is 2-3mol/L in, and the time that ammonium bicarbonate soln is added is 1.5-2 hours, after filtering To filtrate by condensing crystallizing obtain ammonium fertilizer.
6. a kind of processing method of nickle cobalt lithium manganate ternary waste material according to claim 1, it is characterised in that: the step (6) Baume degrees for being concentrated into solution in when condensing crystallizing is 49-51, is then cooled down, and rate of temperature fall is 2-3 DEG C/h, is cooled to temperature Degree is 10-15 DEG C, is centrifuged using decanter centrifuge.
7. a kind of processing method of nickle cobalt lithium manganate ternary waste material according to claim 1, it is characterised in that: the step (1) reducing agent used when restoring is at least one of hydrogen, methane, carbon monoxide, water-gas.
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