CN106219507A - A kind of Application way of electronic material pickling waste phosphoric acid - Google Patents
A kind of Application way of electronic material pickling waste phosphoric acid Download PDFInfo
- Publication number
- CN106219507A CN106219507A CN201610539611.2A CN201610539611A CN106219507A CN 106219507 A CN106219507 A CN 106219507A CN 201610539611 A CN201610539611 A CN 201610539611A CN 106219507 A CN106219507 A CN 106219507A
- Authority
- CN
- China
- Prior art keywords
- solution
- phosphoric acid
- waste phosphoric
- electronic material
- application way
- 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.)
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Classifications
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- 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
- C01B25/36—Aluminium phosphates
-
- 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
- C01B25/30—Alkali metal phosphates
Abstract
The Application way of a kind of electronic material pickling waste phosphoric acid, comprises the steps: 1), the concentration of waste phosphoric acid is adjusted 10% 30% to original content, and solution is divided into A and B two parts；2), A part solution is the most slowly added sodium hydroxide, under room temperature condition, stir 2h, until resolution of precipitate obtains solution C；3), solution C being slowly added in solution B, control ph value, between 4.5 9.5, at ambient temperature, is slowly stirred 1h, obtains solution D；4), to solution D carrying out filtration washing, filtering residue 105 DEG C dries 30 40min, and filtering residue is aluminum phosphate；5), by step 4) in residual filtrate insulation obtain sodium ascorbyl phosphate series of products 105 DEG C of crystallizations.The inventive method is simple, the cost of material is low in use, it is possible to make full use of the resource of lean solution own, and whole technological parameter is easy to control, it is simple to enterprise operations recycles lean solution, it is simple to promote.
Description
Technical field
The present invention relates to the reuse method of a kind of phosphoric acid, the utilization side of a kind of electronic material pickling waste phosphoric acid
Method.
Background technology
Electronic material pickling phosphate discharge liquid mainly contains aluminium ion, phosphoric acid.For a long time, the processing method of this waste liquid is
Dilution neutralisation, will be diluted to after low concentration neutralize with calcium hydroxide by waste liquid, produces aluminum phosphate calcium deposit, then as solid
Useless process.But the body refuse dehydration difficulty produced after Chen Dian, is difficult to be dried, and post-processing difficulty is big, and major part situation is to pile up to treat
Processing, not only occupy a large amount of soil, also result in secondary pollution, the method wastes substantial amounts of bronsted lowry acids and bases bronsted lowry simultaneously.
Summary of the invention
It is an object of the invention to overcome the deficiency of existing recoverying and utilizing method, it is provided that a kind of cost-effective, it is possible to fully
Extract effective element in lean solution, while making full use of lean solution, reduce environmental pollution.
The technical solution adopted for the present invention to solve the technical problems is:
The Application way of a kind of electronic material pickling waste phosphoric acid, it is characterised in that comprise the steps:
1), by the concentration of waste phosphoric acid adjust the 10%-30% to original content, and solution is divided into A and B two parts；
2), A part solution is the most slowly added sodium hydroxide, under room temperature condition, stir 2h, until resolution of precipitate obtains
To solution C；
3), solution C being slowly added in solution B, control ph value, between 4.5-9.5, at ambient temperature, is slowly stirred
Mix 1h, obtain solution D；
4), to solution D carrying out filtration washing, filtering residue 105 DEG C dries 30-40min, and filtering residue is aluminum phosphate；
5), by step 4) in residual filtrate insulation obtain sodium ascorbyl phosphate series of products 105 DEG C of crystallizations.
As this programme optimize content, described step 1) in concentration be adjusted to original content 20%.
The content optimized as this programme, described step 2) in the determination methods of resolution of precipitate be that the ph value measuring solution is
14。
As this programme optimize content, described step 3) in control ph value be 7.
Beneficial effects of the present invention:
The present invention is directed to existing acid pickle treatment technology uses acid-base neutralization method, improved, first waste phosphoric acid is joined
It is set to certain concentration, utilizes sodium hydroxide regulation ph to alkalescence, then recycle waste phosphoric acid adjusted stepwise ph configured,
Realize the purification of phosphoric acid eventually, obtain aluminum phosphate and sodium phosphate series salt；The inventive method is simple, the cost of material is low in use, energy
Enough making full use of the resource of lean solution own, whole technological parameter is easy to control, it is simple to enterprise operations recycles lean solution, it is simple to
Promote；Contaminated aqueous solution element after process is few, and the harm to environment is few.
Detailed description of the invention
Embodiment:
Waste phosphoric acid is adjusted to concentration 10%-30%, is divided into 2 parts, a solution the most slowly adds hydroxide
Sodium, under room temperature condition, stirs 2h, until resolution of precipitate (ph=14), then it is slowly added into the useless phosphorus that another part is adjusted
In acid, control ph4.5-9.5 according to the requirement of phosphate product, at ambient temperature, be slowly stirred 1h, carry out filtration washing,
Filtering residue 105 DEG C drying, filtering residue is aluminum phosphate, and residual filtrate is when 105 DEG C, and conventional crystallization can get sodium ascorbyl phosphate series of products.
The principle of the invention:
Al3++H3PO4+ 4NaOH=NaAlO2+Na3PO4
NaAlO2+Al3++H3PO4=2AlPO4↓+NaH2PO4
2NaAlO2+Al3++H3PO4=3AlPO4↓+Na2HPO4
3NaAlO2+Al3++H3PO4=4AlPO4↓+Na3PO4
H3PO4+ NaOH=Na3PO4。
Table 1 response rate of the present invention parameter influence factor:
The response rate of the present invention is verified through experimenter's many experiments, wherein, when concentration is 20%, and pH value is 7, returns
Yield is up to 98.2%, and not and the customary means of field personnel, but the intellectual work of inventor becomes in the regulation of this parameter
Really.
The basic teaching of the present invention is illustrated, for there is the people of the usual technical ability in this area, and many extensions and change
Changing will be aobvious and the person of being apparent from.The present invention disclosed due to description can be other spy without departing from present invention spirit or general characteristics
Definite form is implemented, and some forms of these particular forms have been noted, so, description embodiments of the disclosure should be regarded as
Illustrate rather than restriction.The scope of the present invention is to be defined by appended claim rather than by described above institute circle
Fixed, within the scope of falling into being changed and will be included in it of the impartial meaning of claim and scope.
To sum up, the present invention produces a desired effect.
Claims (4)
1. the Application way of an electronic material pickling waste phosphoric acid, it is characterised in that comprise the steps:
1), by the concentration of waste phosphoric acid adjust the 10%-30% to original content, and solution is divided into A and B two parts；
2), A part solution is the most slowly added sodium hydroxide, under room temperature condition, stir 2h, until resolution of precipitate obtains molten
Liquid C；
3), solution C being slowly added in solution B, control ph value, between 4.5-9.5, at ambient temperature, is slowly stirred
1h, obtains solution D；
4), to solution D carrying out filtration washing, filtering residue 105 DEG C dries 30-40min, and filtering residue is aluminum phosphate；
5), by step 4) in residual filtrate insulation obtain sodium ascorbyl phosphate series of products 105 DEG C of crystallizations.
The Application way of a kind of electronic material pickling waste phosphoric acid the most according to claim 1, it is characterised in that: described step
1) in, concentration is adjusted to original content 20%.
The Application way of a kind of electronic material pickling waste phosphoric acid the most according to claim 1, it is characterised in that: described step
2) in the determination methods of resolution of precipitate be measure solution ph value be 14.
The Application way of a kind of electronic material pickling waste phosphoric acid the most according to claim 1, it is characterised in that: described step
3) controlling ph value in is 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539611.2A CN106219507A (en) | 2016-07-08 | 2016-07-08 | A kind of Application way of electronic material pickling waste phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539611.2A CN106219507A (en) | 2016-07-08 | 2016-07-08 | A kind of Application way of electronic material pickling waste phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106219507A true CN106219507A (en) | 2016-12-14 |
Family
ID=57519048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610539611.2A Pending CN106219507A (en) | 2016-07-08 | 2016-07-08 | A kind of Application way of electronic material pickling waste phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106219507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744759A (en) * | 2016-12-23 | 2017-05-31 | 新疆智诚同欣环保科技有限公司 | A kind of recovery method high of waste phosphoric acid film when producing electrode foil |
| CN112694097A (en) * | 2021-02-07 | 2021-04-23 | 深圳瑞赛环保科技有限公司 | Control method for chemical waste-throwing phosphoric acid treatment and synthesis of aluminum phosphate molecular sieve |
| CN112707406A (en) * | 2021-02-07 | 2021-04-27 | 深圳瑞赛环保科技有限公司 | Chemical waste-throwing phosphoric acid treatment and synthesis method of aluminium phosphate molecular sieve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456547A (en) * | 2008-12-19 | 2009-06-17 | 深圳市危险废物处理站有限公司 | Comprehensive utilization method of chemical polishing waste phosphoric acid |
| CN103030126A (en) * | 2011-10-10 | 2013-04-10 | 徐州特瑞达环保科技有限公司 | Recovery method for waste phosphoric acid liquor generated in production process of formed foil |
| CN103288067A (en) * | 2013-06-27 | 2013-09-11 | 武汉科梦环境工程有限公司 | Method for recycling phosphates from formed foil pickling wastewater |
-
2016
- 2016-07-08 CN CN201610539611.2A patent/CN106219507A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456547A (en) * | 2008-12-19 | 2009-06-17 | 深圳市危险废物处理站有限公司 | Comprehensive utilization method of chemical polishing waste phosphoric acid |
| CN103030126A (en) * | 2011-10-10 | 2013-04-10 | 徐州特瑞达环保科技有限公司 | Recovery method for waste phosphoric acid liquor generated in production process of formed foil |
| CN103288067A (en) * | 2013-06-27 | 2013-09-11 | 武汉科梦环境工程有限公司 | Method for recycling phosphates from formed foil pickling wastewater |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744759A (en) * | 2016-12-23 | 2017-05-31 | 新疆智诚同欣环保科技有限公司 | A kind of recovery method high of waste phosphoric acid film when producing electrode foil |
| CN106744759B (en) * | 2016-12-23 | 2019-03-15 | 新疆智诚同欣环保科技有限公司 | A kind of high recovery method of waste phosphoric acid film when producing electrode foil |
| CN112694097A (en) * | 2021-02-07 | 2021-04-23 | 深圳瑞赛环保科技有限公司 | Control method for chemical waste-throwing phosphoric acid treatment and synthesis of aluminum phosphate molecular sieve |
| CN112707406A (en) * | 2021-02-07 | 2021-04-27 | 深圳瑞赛环保科技有限公司 | Chemical waste-throwing phosphoric acid treatment and synthesis method of aluminium phosphate molecular sieve |
| CN112707406B (en) * | 2021-02-07 | 2023-05-16 | 深圳瑞赛环保科技有限公司 | Chemical waste disposal phosphoric acid treatment and aluminum phosphate molecular sieve synthesis method |
| CN112694097B (en) * | 2021-02-07 | 2023-09-12 | 深圳瑞赛环保科技有限公司 | Control method for chemical waste disposal phosphoric acid treatment and aluminum phosphate molecular sieve synthesis |
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Application publication date: 20161214 |