CN202529847U - Ferric pyrophosphate powder preparation system with controllable particle size - Google Patents
Ferric pyrophosphate powder preparation system with controllable particle size Download PDFInfo
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- CN202529847U CN202529847U CN2012201416330U CN201220141633U CN202529847U CN 202529847 U CN202529847 U CN 202529847U CN 2012201416330 U CN2012201416330 U CN 2012201416330U CN 201220141633 U CN201220141633 U CN 201220141633U CN 202529847 U CN202529847 U CN 202529847U
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- ferric pyrophosphate
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Abstract
The utility model relates to a ferric pyrophosphate powder preparation system with controllable particle size. The preparation system comprises a mixing tank, an alkaline tank, a stirring tank, an aging tank and a washing tank. The preparation system is characterized in that the mixing tank and the alkaline tank are arranged in parallel and connected with the stirring tank through parallel flow pipes, and the stirring tank is sequentially connected with the aging tank and the washing tank through direct connection pipes. In the preparation system, the mixing tank, the alkaline tank, the stirring tank, the aging tank and the washing tank are adopted to prepare ferric pyrophosphate powder. By changing reaction temperature, stirring speed, reaction potential of hydrogen (pH) value and reaction time, the ferric pyrophosphate powder with the particle size D50 being 3.0 to 15.0 micrometers can be obtained so as to meet requirements for preparing lithium iron phosphate with different particle sizes. In addition, the particle sizes of finished products are of normal distribution, and the average particle size can be flexibly controlled by changing technological parameters. The preparation system is scientific and reasonable, simple in structure and short in process, operation is easy to control, and industrialization is easy to achieve.
Description
Technical field
The utility model belongs to the battery material field, relates to the preparation of ferric orthophosphate powder, especially a kind of controllable granularity preparation system of ferric orthophosphate powder.
Background technology
Ev industry development at present rapidly; High security and long lifetime to battery propose higher requirement; Iron lithium phosphate becomes the first-selection of power type lithium-ion battery anode material because of advantages such as its high security and long lifetives, and iron lithium phosphate causes the very big interest of people as anode material for lithium-ion batteries.To various different batteries, the globule size of its iron lithium phosphate and size-grade distribution are also different.When being the raw material synthesizing iron lithium phosphate with the Orthophosphoric acid Ferrum, the size distribution of iron lithium phosphate mainly receives the influence of the size-grade distribution of its synthesis material Orthophosphoric acid Ferrum.Therefore control the globule size and the size-grade distribution of Orthophosphoric acid Ferrum well, can control the globule size and the distribution of prepared iron lithium phosphate, to adapt to the demand of different occasions to LiFePO 4 material.
The utility model content
The utility model purpose is to overcome the weak point of prior art, and a kind of controllable granularity preparation system of ferric orthophosphate powder is provided.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of controllable granularity preparation system of ferric orthophosphate powder; Comprise mixing pit, alkaline pond, agitated pool, ageing pond, wash trough; It is characterized in that: said mixing pit, alkaline pond are set up in parallel through also flowing pipe and connect agitated pool, and agitated pool connects ageing pond and wash trough successively through straight pipe.
And said agitated pool is equipped with whisking appliance and temperature regulator.
The beneficial effect of the utility model is:
The utility model adopts mixing pit, alkaline pond, agitated pool, ageing pond, wash trough to make ferric orthophosphate powder; Through changing temperature of reaction, stir speed (S.S.), pH value in reaction and reaction times; Can obtain the ferric orthophosphate powder that granularity D50 is 3.0-15.0 μ m, to satisfy the needs of preparation different grain size size iron lithium phosphate; And the granularity of finished product is normal distribution, can control the size of mean particle size flexibly through changing processing parameter.The utility model preparation system is scientific and reasonable, and is simple in structure, and flow process is short, and is easy to control, is easy to realize industriallization.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model.
Embodiment
Further specify below in conjunction with the structure of accompanying drawing to the utility model, following embodiment is illustrative, is not determinate, can not limit the protection domain of the utility model with following embodiment.
A kind of controllable granularity preparation system of ferric orthophosphate powder; Referring to Fig. 1; Comprise mixing pit 1, alkaline pond 2, agitated pool 4, ageing pond 8, wash trough 9; Connect agitated pool, ageing pond, wash trough successively after wherein mixing pit, alkaline pond are set up in parallel, mixing pit, alkaline pond are set up in parallel through also flowing pipe 3 and connect agitated pools, and agitated pool connects ageing pond and wash trough successively through straight pipe 7.
Said agitated pool is equipped with whisking appliance 6 and temperature regulator 5.
The method that the utility model is made the Orthophosphoric acid Ferrum of controllable granularity is:
(1) in mixing pit with the iron nitrate solution of deionized water preparation 0.5-5mol/L, then according to amount of substance than being Fe
3+: PO
4 3-=1: 1-1: 1 ratio adds phosphoric acid and mixes, and forms iron nitrate and phosphoric acid mixing solutions;
(2) in alkaline pond that sodium hydroxide is water-soluble, the sodium hydroxide solution of formation 1-10mol/L;
(3) with the iron nitrate that mixes and phosphoric acid mixing solutions and sodium hydroxide solution through and the reinforced mode of stream pipe be added in the agitated pool continuously; The temperature of reaction of controlled temperature unit is 30-80 ℃; The stir speed (S.S.) of whisking appliance is 100-600rpm, and reaction pH is 1.5-3.0, successive reaction 2-48h;
(4) 1-5h is handled in ageing in the ageing pond, filters out the Orthophosphoric acid Ferrum sedimentable matter;
(5) with in the Orthophosphoric acid Ferrum sedimentable matter that the filters out input wash trough, use deionized water wash to pH as 6-7 after, carry out drying at 80-120 ℃, obtain ferric orthophosphate powder.
Prepared ferric orthophosphate powder granularity D50 is 3.0-15.0 μ m through the utility model.
Claims (2)
1. the controllable granularity preparation system of a ferric orthophosphate powder; Comprise mixing pit, alkaline pond, agitated pool, ageing pond, wash trough; It is characterized in that: said mixing pit, alkaline pond are set up in parallel through also flowing pipe and connect agitated pool, and agitated pool connects ageing pond and wash trough successively through straight pipe.
2. according to the controllable granularity preparation system of the ferric orthophosphate powder described in the claim 1, it is characterized in that: said agitated pool is equipped with whisking appliance and temperature regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201416330U CN202529847U (en) | 2012-04-06 | 2012-04-06 | Ferric pyrophosphate powder preparation system with controllable particle size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201416330U CN202529847U (en) | 2012-04-06 | 2012-04-06 | Ferric pyrophosphate powder preparation system with controllable particle size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202529847U true CN202529847U (en) | 2012-11-14 |
Family
ID=47131044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201416330U Expired - Lifetime CN202529847U (en) | 2012-04-06 | 2012-04-06 | Ferric pyrophosphate powder preparation system with controllable particle size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202529847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379877A (en) * | 2015-12-27 | 2017-02-08 | 天津赫维科技有限公司 | Continuous preparation device of iron phosphate |
-
2012
- 2012-04-06 CN CN2012201416330U patent/CN202529847U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379877A (en) * | 2015-12-27 | 2017-02-08 | 天津赫维科技有限公司 | Continuous preparation device of iron phosphate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190605 Address after: 300384 No. 6 Huake No. 7 Road, Binhai New Area, Tianjin Binhai High-tech Industrial Development Zone Co-patentee after: China Electric Power Shenzhen Group Co., Ltd. Patentee after: No.18 Inst., China Electronic Sci-Tech Group Corp. Address before: 300381 Li Qi Zhuang Ling Chuang-tzu Road, Nankai District, Nankai District, Tianjin Patentee before: No.18 Inst., China Electronic Sci-Tech Group Corp. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
|
| CX01 | Expiry of patent term |