CN106044735A - Synthesizing method for low-cost battery-grade iron phosphate - Google Patents
Synthesizing method for low-cost battery-grade iron phosphate Download PDFInfo
- Publication number
- CN106044735A CN106044735A CN201610373707.6A CN201610373707A CN106044735A CN 106044735 A CN106044735 A CN 106044735A CN 201610373707 A CN201610373707 A CN 201610373707A CN 106044735 A CN106044735 A CN 106044735A
- Authority
- CN
- China
- Prior art keywords
- ferrous sulfate
- iron phosphate
- low
- grade iron
- aqueous solution
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
- C01B25/375—Phosphates of heavy metals of iron
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a synthesizing method for low-cost battery-grade iron phosphate. The synthesizing method comprises the following steps of purifying, wherein a ferrous sulfate aqueous solution is prepared, a purifying agent is added, filtering is carried out, and ferrous sulfate filter liquor is obtained; mixing, wherein a phosphorus source aqueous solution is prepared, the phosphorus source aqueous solution and the ferrous sulfate filter liquor are stirred and mixed, and a mixture solution is obtained; oxidizing, wherein hydrogen peroxide is dropwise added into the mixture solution, Fe<2+> is oxidized into Fe<3+>, and Fe3+ is obtained through precipitation; separating, wherein a filter cake is washed until eluate is neutral and contains no SO4<2-> ions; drying, wherein the washed filter cake is fully dried, then grinding and screening are carried out, and the battery-grade iron phosphate (FePO4.2H2O) powder is obtained; evaporating, wherein the filer liquor and ammonium hydroxide are subjected to neutralization, then evaporating and crystallizing are carried out, and ammonium sulfate fertilizer is obtained. The method is low in cost, simple in process and easy to control, and obtained iron phosphate is small in granularity and high in purity; besides, it can be considered to recycle water obtained through evaporation as reaction liquor, and thus economic benefits are created while the environment is protected.
Description
Technical field
The invention belongs to new forms of energy and technical field of lithium ion, particularly relate to a kind of low-cost cell-grade iron phosphate
Synthetic method.
Background technology
Positive electrode is the important component part of lithium ion battery, is the bottle of restriction lithium ion battery large-scale promotion application
Neck, improves performance, the key of reduction cost especially.Anode material for lithium-ion batteries not only occupies about the 30% of battery cost,
But also be the security performance being largely fixed battery.Improve the specific energy of material further, reduce cost and improve peace
Full performance becomes the dominant direction of the research and development of current anode material for lithium-ion batteries.
The appearance of LiFePO4 positive electrode, has aboundresources, environmental friendliness with it, safety is good, it is more stable etc. to circulate
Advantage and cause the extensive concern of people, particularly its high safety performance, high thermal stability and eco-friendly advantage to lithium from
The large-scale application of sub-battery has very important significance, and is paid attention to by global video automobile and green energy-storing equipment manufacturer.
Ferric phosphate lithium cell is well suited for applying in energy storage industry by aspect advantages such as its safety, efficiency, life-span and environmental protection, present
Mobile base station meet an urgent need lithium ion power supply almost all select ferric phosphate lithium cell.
Iron phosphate has key as the main raw material(s) of synthesizing iron lithium phosphate, its quality to the impact of LiFePO4 performance
Effect.Current domestic iron phosphate manufacturing enterprise is on the low side, and scope of the enterprise is generally little, its reason be LiFePO4 be nearly 2 years the most quick-fried
Hairdo increases, and its synthesis technique is primarily present problems with: one, pyroreaction synthesis technique is more severe to the condition of equipment
Carving, energy consumption is high, is not suitable for industrialized production；Two, existing employing liquid-phase precipitation crystallization processes needs repeatedly the acid of regulation system
Basicity, exists that technological process is complicated, building-up process is wayward, the concordance of product and less stable.
Summary of the invention
The technical problem to be solved is for the deficiencies in the prior art, it is provided that a kind of cost is relatively low, operation letter
Single, easily controllable, have and utilize the method realizing large-scale industrial production battery-grade iron phosphate.The titanium white that main employing is cheap
Ferrous sulfate by-product makees source of iron, improves added value while reducing cost；Tune is first passed through before this external product oxidation precipitation
The concentration of joint ferrous sulfate and phosphorus source carrys out the pH value of controlled reaction-precipitation, is not required to additionally with alkaline conditioner (such as ammonia), it is to avoid
Because during dropping, local concentration is too high and produce Fe (OH)3Precipitation, thus efficiently control the ferrum phosphorus ratio in iron phosphate.
For solving above-mentioned technical problem, the synthetic method of the present invention a kind of low-cost cell-grade iron phosphate, it is characterized by bag
Include following steps:
S1, remove impurity: ferrous sulfate and water are configured to the ferrous sulfate aqueous solution that concentration is 0.01-2mol/L, to sulphuric acid
Ferrous aqueous solution adds cleaner, is filtrated to get ferrous sulfate filtrate after purification；
S2, mixing: phosphorus source and water are configured to the phosphorus source aqueous solution that concentration is 0.01-2mol/L, by phosphorus source aqueous solution with
The stirring mixing of described ferrous sulfate filtrate, obtains mixed liquor；
S3, oxidation: in described mixed liquor, be slowly added dropwise hydrogen peroxide, make Fe2+It is oxidized to Fe3+And be precipitated out；
S4, separation: filter S3 products therefrom, and filter cake is washed until eluate is in neutrality and without SO4 2-From
Son；
S5, drying: the filter cake after being washed by S4 is the driest at a temperature of not higher than 120 DEG C, then grind and sieve
To battery-grade iron phosphate (FePO4·2H2O) powder；
S6, evaporation: the filtrate obtained by S4 is neutralized with ammonia, obtains ammonium sulfate fertilizer by evaporative crystallization.
Further, cleaner described in S1 is sodium sulfide, sodium polysulphide or phosphoric acid, and addition is that titanium white by product sulphuric acid is sub-
The 0.5-10% of weight of iron mark.
Further, phosphorus source described in S2 is phosphate, acid phosphate or phosphoric acid, and addition is ferrous sulfate mole
0.95-1.1 times.
Further, the concentration of hydrogen peroxide described in S3 is 10-30%, and addition is the 0.5-of ferrous sulfate mole
1.0 again.
Further, when dripping hydrogen peroxide in S3, the oxidizing temperature of reactant liquor is 25-90 DEG C, and the response time is 0.5h-5h.
Further, by the regulation of ferrous sulfate and phosphorus source concentration being made the pH value control of hydrogen peroxide oxidation postprecipitation in S3
System is between 1.0-3.0.
The invention has the beneficial effects as follows:
1, the synthetic method of battery-grade iron phosphate of the present invention directly use titanium white by product ferrous sulfate guarantee low
Cost；Being not required to the ferrum phosphorus ratio that extra alkaline conditioner efficiently controls in iron phosphate, technique is simple.
2, the synthetic method process of battery-grade iron phosphate of the present invention is easily controllable, Fe/P is stable, product granularity is thin
Little, be evenly distributed, purity higher.
3, the synthetic method of battery-grade iron phosphate of the present invention produces almost without the three wastes, reduces the same of environmental protection pressure
Time create substantial amounts of economic benefit, belong to environmental protection production technology.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained on the premise of not making creative work, broadly falls into present invention protection
Scope.
The synthetic method of the present invention a kind of low-cost cell-grade iron phosphate, is characterized by comprise the following steps:
S1, remove impurity: ferrous sulfate and water are configured to the ferrous sulfate aqueous solution that concentration is 0.01-2mol/L, to sulphuric acid
Ferrous aqueous solution adds cleaner, is filtrated to get ferrous sulfate filtrate after purification；
S2, mixing: phosphorus source and water are configured to the phosphorus source aqueous solution that concentration is 0.01-2mol/L, by phosphorus source aqueous solution with
The stirring mixing of described ferrous sulfate filtrate, obtains mixed liquor；
S3, oxidation: in described mixed liquor, be slowly added dropwise hydrogen peroxide, make Fe2+It is oxidized to Fe3+And be precipitated out；
S4, separation: filter S3 products therefrom, and filter cake is washed until eluate is in neutrality and without SO4 2-From
Son；
S5, drying: the filter cake after being washed by S4 is the driest at a temperature of not higher than 120 DEG C, then grind and sieve
To battery-grade iron phosphate (FePO4·2H2O) powder；
S6, evaporation: the filtrate obtained by S4 is neutralized with ammonia, obtains ammonium sulfate fertilizer by evaporative crystallization.
Further, the preferred sodium sulfide of cleaner described in S1, phosphoric acid, addition is preferably titanium white by product ferrous sulfate
The 1-8% of mass fraction.
Further, phosphorus source preferably phosphate described in S2, acid phosphate, its addition is ferrous sulfate mole
0.98-1.05 times.
Further, the concentration of described hydrogen peroxide described in S3 is 10-30%, and the amount of addition is preferably ferrous sulfate mole
0.6-0.9 times of amount.
Further, when dripping hydrogen peroxide in S3, the oxidizing temperature of reactant liquor is preferably 25-70 DEG C, and the response time is preferably
1h-4h。
Further, by the regulation of ferrous sulfate and phosphorus source concentration being made the control of hydrogen peroxide oxidation postprecipitation pH value in S3
System is preferably between 1.5-2.5.
Embodiment 1: 83.4g titanium white by product ferrous sulfate is dissolved in (C=0.2mol/L) in 1500mL water, is stirred at room temperature down
Add 0.42g (0.5%) powdery sodium sulfide, be filtered to remove the black precipitate of generation, obtain the copperas solution of purification；Will
34.5g ammonium dihydrogen phosphate is dissolved in 1500mL water (C=0.2mol/L) and joins in above-mentioned solution, is slowly added dropwise under room temperature
20.4gH2O2(30%), dripping off insulation 1h after reaction rises to 70 DEG C, now the pH value of reactant liquor is 1.8, filters the precipitation separated out,
The filter cake obtained is washed with water to eluate in neutrality and without SO4 2-Ion, more overnight dry at 105 DEG C to constant weight and must produce
Product FePO4·2H2O, filtrate neutralizes through ammonia, evaporates, crystallizes to obtain producing ammonium sulfate byproduct chemical fertilizer.
Embodiment 2: 83.4g titanium white by product ferrous sulfate is dissolved in (C=0.5mol/L) in 600mL water, is stirred at room temperature down
Adding 0.83g (1.0%) powdery sodium sulfide, be filtered to remove the black precipitate of generation, the green gel being filtered to remove generation sinks
Form sediment, obtain the copperas solution of purification；38.8g diammonium phosphate is dissolved in 600mL water (C=0.5mol/L) and joins
In above-mentioned solution, under room temperature, it is slowly added dropwise 54.4g H2O2(concentration 15%), drips off insulation 3h after reaction rises to 50 DEG C, the most instead
The pH value answering liquid is 1.5, filters the precipitation separated out, and the filter cake obtained is washed with water to eluate in neutrality and without SO4 2-From
Son, more overnight dry at 115 DEG C to constant weight and obtain product F ePO4·2H2O, filtrate neutralizes through ammonia, evaporates, crystallizes to obtain by-product sulfur
Acid ammonium fertilizer.
Embodiment 3: 83.4g titanium white by product ferrous sulfate is dissolved in (C=1.0mol/L) in 300mL water, is stirred at room temperature down
Add the H of 2.09g 85% concentration3PO4(2.5%) copperas solution after purification, is obtained；63.9g ammonium phosphate is dissolved in
In 300mL water (C=1.0mol/L) join in above-mentioned solution, under room temperature, it is slowly added dropwise 35.7g H2O2(concentration 20%), drips
Complete reaction is incubated 2.5h after rising to 60 DEG C, and now the pH value of reactant liquor is 2.0, filters the precipitation separated out, the filter cake water obtained
Wash to eluate in neutrality and without SO4 2-Ion, more overnight dry at 110 DEG C to constant weight and obtain product F ePO4·2H2O, filter
Liquid neutralizes through ammonia, evaporates, crystallizes to obtain producing ammonium sulfate byproduct chemical fertilizer.
The synthetic method of the present invention a kind of low-cost cell-grade iron phosphate is with cheap titanium white by product seven water sulphuric acid
Ferrous and phosphorus source is reaction raw materials, regulates the pH value that oxidation precipitation separates out, technical process by controlling their reaction density
Because not using traditional alkaline pH adjusting agent and without Fe (OH)3Produce；The filtrate obtained is neutralized with ammonia, by evaporation knot
Brilliant ammonium sulfate fertilizer.Invented technology cost is relatively low, process is simple for this, easily controllable；Gained iron phosphate granularity is tiny, purity relatively
High；In addition the water that filtrate steams it is also conceivable to reuse and does reactant liquor, creates economic benefit while protection environment.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. the synthetic method of a low-cost cell-grade iron phosphate, it is characterised in that comprise the following steps:
S1, remove impurity: ferrous sulfate and water are configured to the ferrous sulfate aqueous solution that concentration is 0.01-2mol/L, to ferrous sulfate
Aqueous solution adds cleaner, is filtrated to get ferrous sulfate filtrate after purification；
S2, mixing: phosphorus source and water are configured to the phosphorus source aqueous solution that concentration is 0.01-2mol/L, by phosphorus source aqueous solution with described
The stirring mixing of ferrous sulfate filtrate, obtains mixed liquor；
S3, oxidation: in described mixed liquor, be slowly added dropwise hydrogen peroxide, make Fe2+It is oxidized to Fe3+And be precipitated out；
S4, separation: filter S3 products therefrom, and filter cake is washed until eluate is in neutrality and without SO4 2-Ion；
S5, drying: the filter cake after being washed by S4 is the driest at a temperature of not higher than 120 DEG C, then grinding is sieved and is obtained electricity
Pond level iron phosphate (FePO4·2H2O) powder；
S6, evaporation: the filtrate obtained by S4 is neutralized with ammonia, obtains ammonium sulfate fertilizer by evaporative crystallization.
The synthetic method of a kind of low-cost cell-grade iron phosphate the most according to claim 1, it is characterised in that described in S1
Cleaner is sodium sulfide, sodium polysulphide or phosphoric acid, and addition is the 0.5-10% of titanium white by product ferrous sulfate mass fraction.
The synthetic method of a kind of low-cost cell-grade iron phosphate the most according to claim 1, it is characterised in that described in S2
Phosphorus source is phosphate, acid phosphate or phosphoric acid, and addition is 0.95-1.1 times of ferrous sulfate mole.
The synthetic method of a kind of low-cost cell-grade iron phosphate the most according to claim 1, it is characterised in that described in S3
The concentration of hydrogen peroxide is 10-30%, and addition is 0.5-1.0 times of ferrous sulfate mole.
The synthetic method of a kind of low-cost cell-grade iron phosphate the most according to claim 1, it is characterised in that drip in S3
During hydrogen peroxide, the oxidizing temperature of reactant liquor is 25-90 DEG C, and the response time is 0.5h-5h.
The synthetic method of a kind of low-cost cell-grade iron phosphate the most according to claim 5, it is characterised in that pass through in S3
Regulation to ferrous sulfate and phosphorus source concentration makes the pH value of hydrogen peroxide oxidation postprecipitation control between 1.0-3.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373707.6A CN106044735A (en) | 2016-05-31 | 2016-05-31 | Synthesizing method for low-cost battery-grade iron phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373707.6A CN106044735A (en) | 2016-05-31 | 2016-05-31 | Synthesizing method for low-cost battery-grade iron phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106044735A true CN106044735A (en) | 2016-10-26 |
Family
ID=57171476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610373707.6A Pending CN106044735A (en) | 2016-05-31 | 2016-05-31 | Synthesizing method for low-cost battery-grade iron phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106044735A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902637A (en) * | 2017-12-19 | 2018-04-13 | 贵州大龙汇成新材料有限公司 | A kind of production method of high-purity phosphoric acid iron |
| CN108455547A (en) * | 2018-02-11 | 2018-08-28 | 衢州华友钴新材料有限公司 | A kind of low impurity high ferro phosphorus is than greatly than the preparation method of table battery-grade iron phosphate |
| CN108584902A (en) * | 2018-06-15 | 2018-09-28 | 山东鲁北企业集团总公司 | A kind of method of titanium white solid waste production battery level ferric pyrophosphate |
| CN109110741A (en) * | 2018-11-08 | 2019-01-01 | 中钢集团安徽天源科技股份有限公司 | A kind of method that mother liquor substep recycles in phosphoric acid ferrimanganic preparation process |
| CN109786744A (en) * | 2019-01-24 | 2019-05-21 | 中南大学 | A method of phosphoric acid ferrisodium electrode is prepared using industrial by-product ferrous sulfate |
| CN110342485A (en) * | 2019-08-06 | 2019-10-18 | 贵州开瑞科技有限公司 | A kind of battery-grade iron phosphate alkali-free formula production method |
| CN110540185A (en) * | 2019-09-17 | 2019-12-06 | 襄阳泽东新能源发展有限公司 | synthesis process of battery-grade iron phosphate |
| CN110937586A (en) * | 2018-09-25 | 2020-03-31 | 杭州长凯能源科技有限公司 | Circular economy process for preparing materials |
| CN110980678A (en) * | 2019-12-26 | 2020-04-10 | 湖南雅城新材料有限公司 | Preparation method of iron phosphate with low cost and low impurities |
| CN111360033A (en) * | 2020-03-23 | 2020-07-03 | 蒋央芳 | Recycling treatment method of ferrotitanium sludge |
| CN112158818A (en) * | 2020-09-08 | 2021-01-01 | 合肥国轩高科动力能源有限公司 | Method for preparing modified iron phosphate from modified iron phosphate and steel pickling waste liquid and application |
| CN112661129A (en) * | 2021-01-27 | 2021-04-16 | 四川大学 | Preparation method of iron phosphate |
| CN112678792A (en) * | 2020-12-28 | 2021-04-20 | 大连博融新材料有限公司 | Iron phosphate, preparation method and application thereof |
| CN113307243A (en) * | 2021-07-08 | 2021-08-27 | 河南佰利新能源材料有限公司 | Method for preparing iron phosphate by recycling mother liquor |
| CN114560455A (en) * | 2022-03-08 | 2022-05-31 | 四川大学 | Method for preparing battery-grade iron phosphate by using ferrous sulfate and phosphoric acid |
| CN115140721A (en) * | 2022-05-24 | 2022-10-04 | 抚州润泰药业有限公司 | Method for synthesizing battery-grade iron phosphate from byproduct ferrous sulfate and byproduct phosphoric acid |
| CN115448276A (en) * | 2022-08-16 | 2022-12-09 | 四川龙蟒磷化工有限公司 | Battery anode material precursor and preparation method thereof |
| CN115650188A (en) * | 2022-09-08 | 2023-01-31 | 广西金茂钛业有限公司 | Method for preparing iron phosphate by using titanium dioxide byproduct ferrous sulfate |
| CN115650191A (en) * | 2022-10-28 | 2023-01-31 | 贵州川恒化工股份有限公司 | Preparation method of sheet battery-grade iron phosphate |
| CN115744851A (en) * | 2022-10-19 | 2023-03-07 | 锂源(深圳)科学研究有限公司 | Method for recycling and preparing battery-grade iron phosphate |
-
2016
- 2016-05-31 CN CN201610373707.6A patent/CN106044735A/en active Pending
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902637A (en) * | 2017-12-19 | 2018-04-13 | 贵州大龙汇成新材料有限公司 | A kind of production method of high-purity phosphoric acid iron |
| CN108455547A (en) * | 2018-02-11 | 2018-08-28 | 衢州华友钴新材料有限公司 | A kind of low impurity high ferro phosphorus is than greatly than the preparation method of table battery-grade iron phosphate |
| CN108455547B (en) * | 2018-02-11 | 2019-09-03 | 衢州华友钴新材料有限公司 | A kind of preparation method of low impurity high-speed rail phosphorus than bigger serface battery-grade iron phosphate |
| CN108584902A (en) * | 2018-06-15 | 2018-09-28 | 山东鲁北企业集团总公司 | A kind of method of titanium white solid waste production battery level ferric pyrophosphate |
| CN110937586B (en) * | 2018-09-25 | 2023-09-22 | 杭州长凯能源科技有限公司 | Circular economic process for preparing material |
| CN110937586A (en) * | 2018-09-25 | 2020-03-31 | 杭州长凯能源科技有限公司 | Circular economy process for preparing materials |
| CN109110741A (en) * | 2018-11-08 | 2019-01-01 | 中钢集团安徽天源科技股份有限公司 | A kind of method that mother liquor substep recycles in phosphoric acid ferrimanganic preparation process |
| CN109110741B (en) * | 2018-11-08 | 2021-10-12 | 中钢天源股份有限公司 | Method for recycling mother liquor step by step in preparation process of iron phosphate manganese |
| CN109786744A (en) * | 2019-01-24 | 2019-05-21 | 中南大学 | A method of phosphoric acid ferrisodium electrode is prepared using industrial by-product ferrous sulfate |
| CN110342485A (en) * | 2019-08-06 | 2019-10-18 | 贵州开瑞科技有限公司 | A kind of battery-grade iron phosphate alkali-free formula production method |
| CN110540185A (en) * | 2019-09-17 | 2019-12-06 | 襄阳泽东新能源发展有限公司 | synthesis process of battery-grade iron phosphate |
| CN110980678A (en) * | 2019-12-26 | 2020-04-10 | 湖南雅城新材料有限公司 | Preparation method of iron phosphate with low cost and low impurities |
| CN111360033A (en) * | 2020-03-23 | 2020-07-03 | 蒋央芳 | Recycling treatment method of ferrotitanium sludge |
| CN112158818B (en) * | 2020-09-08 | 2022-08-09 | 合肥国轩高科动力能源有限公司 | Method for preparing modified iron phosphate from modified iron phosphate and steel pickling waste liquid and application |
| CN112158818A (en) * | 2020-09-08 | 2021-01-01 | 合肥国轩高科动力能源有限公司 | Method for preparing modified iron phosphate from modified iron phosphate and steel pickling waste liquid and application |
| CN112678792A (en) * | 2020-12-28 | 2021-04-20 | 大连博融新材料有限公司 | Iron phosphate, preparation method and application thereof |
| CN112678792B (en) * | 2020-12-28 | 2022-05-13 | 大连博融新材料有限公司 | Iron phosphate, preparation method and application thereof |
| CN112661129A (en) * | 2021-01-27 | 2021-04-16 | 四川大学 | Preparation method of iron phosphate |
| CN113307243A (en) * | 2021-07-08 | 2021-08-27 | 河南佰利新能源材料有限公司 | Method for preparing iron phosphate by recycling mother liquor |
| CN114560455A (en) * | 2022-03-08 | 2022-05-31 | 四川大学 | Method for preparing battery-grade iron phosphate by using ferrous sulfate and phosphoric acid |
| CN115140721A (en) * | 2022-05-24 | 2022-10-04 | 抚州润泰药业有限公司 | Method for synthesizing battery-grade iron phosphate from byproduct ferrous sulfate and byproduct phosphoric acid |
| CN115140721B (en) * | 2022-05-24 | 2024-03-12 | 抚州润泰药业有限公司 | Method for synthesizing battery grade ferric phosphate from byproduct ferrous sulfate and byproduct phosphoric acid |
| CN115448276A (en) * | 2022-08-16 | 2022-12-09 | 四川龙蟒磷化工有限公司 | Battery anode material precursor and preparation method thereof |
| CN115650188A (en) * | 2022-09-08 | 2023-01-31 | 广西金茂钛业有限公司 | Method for preparing iron phosphate by using titanium dioxide byproduct ferrous sulfate |
| CN115744851A (en) * | 2022-10-19 | 2023-03-07 | 锂源(深圳)科学研究有限公司 | Method for recycling and preparing battery-grade iron phosphate |
| CN115650191A (en) * | 2022-10-28 | 2023-01-31 | 贵州川恒化工股份有限公司 | Preparation method of sheet battery-grade iron phosphate |
| CN115650191B (en) * | 2022-10-28 | 2024-04-02 | 贵州川恒化工股份有限公司 | Preparation method of flaky battery-grade ferric phosphate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106044735A (en) | Synthesizing method for low-cost battery-grade iron phosphate | |
| CN104817059B (en) | A kind of method that battery-grade iron phosphate is prepared by iron powder and phosphatase reaction | |
| DE69525422T2 (en) | Process for the production of high-purity vanadium electrolyte solution | |
| CN109775678A (en) | The method that battery-grade iron phosphate and PHOSPHORIC ACID TECH.GRADE lithium are prepared in waste lithium iron phosphate battery | |
| CN104944400B (en) | The technique that Hydrolyze method prepares iron phosphate | |
| CN103030180B (en) | Production method of high-purity manganese sulfate | |
| CN109704408A (en) | A kind of production method of LITHIUM BATTERY high purity manganese sulfate | |
| CN107190150A (en) | One kind reclaims lithium, iron, the method for current collector aluminum foil in positive material of waste lithium iron phosphate | |
| KR20100083773A (en) | Iron (iii) orthophosphate for li ion accumulators | |
| CN105024072B (en) | A kind of method that lithium ion battery ferric orthophosphate is prepared using iron content raffinate | |
| CN103579608B (en) | The production method of anode material of lithium battery LiMn2O4 electrolytic manganese dioxide | |
| CN110540185A (en) | synthesis process of battery-grade iron phosphate | |
| CN106315629A (en) | Technology for preparing high-purity lithium carbonate through recovering of battery-grade lithium carbonate lithium precipitation mother liquor | |
| CN108183276A (en) | The preparation method of ferric phosphate | |
| CN108557895A (en) | A kind of preparation method of high purity manganese sulfate | |
| CN102887545B (en) | Method for preparing electronic-grade manganese carbonate from manganese-copper-zinc-cobalt-calcium chloride solution | |
| EP4393874A1 (en) | Method for preparing lithium iron phosphate from titanium dioxide by-product of ferrous sulfate | |
| CN107611433A (en) | A kind of method for preparing battery-grade iron phosphate using heavy metal sewage sludge and heavy metal spent acid | |
| CN107265425B (en) | The method for preparing lithium phosphate using pelite containing lithium | |
| CN102897803B (en) | Method for recycling mother solution generated in lithium iron phosphate preparation based on liquid phase method | |
| CN109504861B (en) | Method for recycling residual lithium in electrode material reaction mother liquor prepared by hydrothermal method | |
| CN106803588B (en) | A kind of recycling and reusing method of sodium sulfate waste liquid | |
| CN108059176B (en) | A method of industrial level lithium carbonate is prepared using lithium sulfide waste material | |
| CN109534372A (en) | The method for preparing lithium carbonate using LiFePO4 waste material | |
| CN107792840A (en) | A kind of method that accessory substance ferrophosphorus using industrial yellow phosphorus production prepares ferric phosphate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |