CN103599850B - Carborundum recovery catalyst and preparation method thereof in silicon chip cutting waste material - Google Patents
Carborundum recovery catalyst and preparation method thereof in silicon chip cutting waste material Download PDFInfo
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- CN103599850B CN103599850B CN201310615229.1A CN201310615229A CN103599850B CN 103599850 B CN103599850 B CN 103599850B CN 201310615229 A CN201310615229 A CN 201310615229A CN 103599850 B CN103599850 B CN 103599850B
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Abstract
Carborundum recovery catalyst in silicon chip cutting waste material, is made up of the raw material of following weight portion: sulphur nitrogen nitrile ester 1-2, salicylic acid 2-3, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester 1-2, vulcanized sodium 1-2, isopropyl ethyl thiourethane 4-5, trithiocarbonic acid sodium 1-2,2-sodium naphthalene sulfonate 3-4, dimeric dibasic acid 4-5, terpenic oil 5-7, citric acid 1-2, O-alkyl-N-alkyl sulfide are by carbamate 5-7, methyl alcohol 30-35, diesel oil 45-50, auxiliary agent 10-12, water 30-34; Described auxiliary agent is mixed by the raw material of following weight portion: 12-15% hydrochloric acid solution 20-24, ethanol 40-45, dispersing agent MF 3-4, water 100. Medicament of the present invention is divided silicon and carborundum efficiently, and technique is simple, with low cost, and accumulation rate and the rate of recovery of silicon and carborundum are high.
Description
Technical field
The present invention relates to silicon and the powder separation technology field of carborundum in mortar that silicon wafer wire saw technique produces, relate in particular to carborundum recovery medicament and preparation method thereof in a kind of silicon chip cutting waste material.
Background technology
Various silicon chips, comprise the Silicon Wafer that monocrystalline silicon and polysilicon solar battery slice, microelectronic industry are used, and generally adopt steel wire scroll saw to coordinate the cutting of silicon carbide abrasive slurry to produce, and are called for short mortar once. Silicon wafer thickness is generally 0.22mm, also there is no at present the development trend of attenuate, line kerf width is generally 0.18-0.30mm, this means that the HIGH-PURITY SILICON material that has 20-60% is become to sawdust enters mortar, and it extracts to reclaim and equals to open up the HIGH-PURITY SILICON raw material sources that a kind of new scale is considerable.
Although reclaim the considerable benefit of HIGH-PURITY SILICON, but the physico-chemical property of silicon and carborundum is comparatively approaching, also little about the achievement in research of this project so far, there is no actual production successful story yet, need further feasible separation medicament and the method for actual production of research.
Summary of the invention
The object of the present invention is to provide carborundum recovery catalyst and preparation method thereof in a kind of silicon chip cutting waste material, use this medicament carborundum rate of recovery high, carborundum purity is high.
Technical scheme of the present invention is as follows:
Carborundum recovery catalyst in a kind of silicon chip cutting waste material, is characterized in that being made up of the raw material of following weight portion: sulphur nitrogen nitrile ester 1-2, salicylic acid 2-3, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester 1-2, vulcanized sodium 1-2, isopropyl ethyl thiourethane 4-5, trithiocarbonic acid sodium 1-2,2-sodium naphthalene sulfonate 3-4, dimeric dibasic acid 4-5, terpenic oil 5-7, citric acid 1-2, O-alkyl-N-alkyl sulfide are by carbamate 5-7, methyl alcohol 30-35, diesel oil 45-50, auxiliary agent 10-12, water 30-34; Described auxiliary agent is mixed by the raw material of following weight portion: 12-15% hydrochloric acid solution 20-24, ethanol 40-45, dispersing agent MF 3-4, water 100.
The preparation method of carborundum recovery catalyst in described silicon chip cutting waste material, it is characterized in that comprising the following steps: water, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester, vulcanized sodium, isopropyl ethyl thiourethane, 2-sodium naphthalene sulfonate are mixed, be heated to 45-55 DEG C, add dimeric dibasic acid, terpenic oil, citric acid, O-alkyl-N-alkyl sulfide by carbamate, stir, be heated to 65-70 DEG C, add other residual components, stir 10-15 minute, must use this flotation agent time, flotation agent and mortar weight ratio are 1:2-3; Mortar is mixed with flotation agent, stir 4-6min with the rotating speed of 1000-1200rad/min, system layering while leaving standstill, upper strata is carborundum, middle for liquid level, lower floor are silicon, scraping upper strata carborundum is collected lower floor's silicon and is realized separation.
Beneficial effect of the present invention
Medicament of the present invention is divided silicon and carborundum efficiently, and technique is simple, with low cost, and accumulation rate and the rate of recovery of silicon and carborundum are high.
Detailed description of the invention
Carborundum recovery catalyst in a kind of silicon chip cutting waste material, by following weight portion (kilogram) raw material make: sulphur nitrogen nitrile ester 1, salicylic acid 3, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester 1, vulcanized sodium 2, isopropyl ethyl thiourethane 4, trithiocarbonic acid sodium 2,2-sodium naphthalene sulfonate 4, dimeric dibasic acid 4, terpenic oil 7, citric acid 1, O-alkyl-N-alkyl sulfide are by carbamate 5, methyl alcohol 30, diesel oil 45, auxiliary agent 12, water 30; Described auxiliary agent is mixed by the raw material of following weight portion: 12-15% hydrochloric acid solution 20, ethanol 40, dispersing agent MF 4, water 100.
The preparation method of carborundum recovery catalyst in described silicon chip cutting waste material, it is characterized in that comprising the following steps: water, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester, vulcanized sodium, isopropyl ethyl thiourethane, 2-sodium naphthalene sulfonate are mixed, be heated to 45-55 DEG C, add dimeric dibasic acid, terpenic oil, citric acid, O-alkyl-N-alkyl sulfide by carbamate, stir, be heated to 65-70 DEG C, add other residual components, stir 10-15 minute, to obtain final product.
While using this flotation agent, flotation agent and mortar weight ratio are 1:2.5; Mortar is mixed with flotation agent, stir 5min with the rotating speed of 1100rad/min, system layering while leaving standstill, upper strata is carborundum, middle for liquid level, lower floor are silicon, scraping upper strata carborundum is collected lower floor's silicon and is realized separation.
In the carbonization that this embodiment collects, remaining silicon is less than 0.4%wt, and carborundum remaining in mortar is less than 5%wt.
Claims (1)
1. a carborundum recovery catalyst in silicon chip cutting waste material, is characterized in that being made up of the raw material of following weight portion: sulphur nitrogen nitrile ester 1-2, salicylic acid 2-3, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester 1-2, vulcanized sodium 1-2, isopropyl ethyl thiourethane 4-5, trithiocarbonic acid sodium 1-2,2-sodium naphthalene sulfonate 3-4, dimeric dibasic acid 4-5, terpenic oil 5-7, citric acid 1-2, O-alkyl-N-alkyl sulfide are by carbamate 5-7, methyl alcohol 30-35, diesel oil 45-50, auxiliary agent 10-12, water 30-34; Described auxiliary agent is mixed by the raw material of following weight portion: 12-15% hydrochloric acid solution 20-24, ethanol 40-45, dispersing agent MF 3-4, water 100;
In described silicon chip cutting waste material, the preparation method of carborundum recovery catalyst comprises the following steps: water, glycerin polyoxyethylene ether polyoxypropylene ether fatty acid ester, vulcanized sodium, isopropyl ethyl thiourethane, 2-sodium naphthalene sulfonate are mixed, be heated to 45-55 DEG C, add dimeric dibasic acid, terpenic oil, citric acid, O-alkyl-N-alkyl sulfide by carbamate, stir, be heated to 65-70 DEG C, add other residual components, stir 10-15 minute, to obtain final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310615229.1A CN103599850B (en) | 2013-11-28 | 2013-11-28 | Carborundum recovery catalyst and preparation method thereof in silicon chip cutting waste material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310615229.1A CN103599850B (en) | 2013-11-28 | 2013-11-28 | Carborundum recovery catalyst and preparation method thereof in silicon chip cutting waste material |
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| Publication Number | Publication Date |
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| CN103599850A CN103599850A (en) | 2014-02-26 |
| CN103599850B true CN103599850B (en) | 2016-05-04 |
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| CN201310615229.1A Expired - Fee Related CN103599850B (en) | 2013-11-28 | 2013-11-28 | Carborundum recovery catalyst and preparation method thereof in silicon chip cutting waste material |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689152B (en) * | 2016-03-02 | 2018-04-24 | 安徽正丰再生资源有限公司 | A kind of flotation solvent for recycling carborundum and silicon |
| CN105689153B (en) * | 2016-03-02 | 2018-04-24 | 安徽正丰再生资源有限公司 | A kind of flotation solvent of high selectivity separation carborundum and silicon |
| CN105665151A (en) * | 2016-03-02 | 2016-06-15 | 安徽正丰再生资源有限公司 | Flotation agent for extracting silicon carbide micropowder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3259243A (en) * | 1963-06-28 | 1966-07-05 | Little Inc A | Silicon carbide recovery |
| US3319785A (en) * | 1963-09-30 | 1967-05-16 | Kempten Elektroschmelz Gmbh | Flotation process for the purification of silicon carbide |
| JP2004223321A (en) * | 2003-01-20 | 2004-08-12 | Hayaji Shibata | Method and apparatus for separating sio2 particle and sic particle, and separated/recovered sic |
| CN102388121A (en) * | 2008-12-31 | 2012-03-21 | Memc新加坡私人有限公司 | Methods to recover and purify silicon particles from saw kerf |
| CN102399620A (en) * | 2011-10-08 | 2012-04-04 | 江苏佳宇资源利用股份有限公司 | Method for recovering silicon carbide component from crystal silicon cutting waste mortar |
-
2013
- 2013-11-28 CN CN201310615229.1A patent/CN103599850B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3259243A (en) * | 1963-06-28 | 1966-07-05 | Little Inc A | Silicon carbide recovery |
| US3319785A (en) * | 1963-09-30 | 1967-05-16 | Kempten Elektroschmelz Gmbh | Flotation process for the purification of silicon carbide |
| JP2004223321A (en) * | 2003-01-20 | 2004-08-12 | Hayaji Shibata | Method and apparatus for separating sio2 particle and sic particle, and separated/recovered sic |
| CN102388121A (en) * | 2008-12-31 | 2012-03-21 | Memc新加坡私人有限公司 | Methods to recover and purify silicon particles from saw kerf |
| CN102399620A (en) * | 2011-10-08 | 2012-04-04 | 江苏佳宇资源利用股份有限公司 | Method for recovering silicon carbide component from crystal silicon cutting waste mortar |
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