CN103611635B - The flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar - Google Patents
The flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar Download PDFInfo
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- CN103611635B CN103611635B CN201310615103.4A CN201310615103A CN103611635B CN 103611635 B CN103611635 B CN 103611635B CN 201310615103 A CN201310615103 A CN 201310615103A CN 103611635 B CN103611635 B CN 103611635B
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Abstract
Purify in the mortar flotation agent of carborundum, is made up of the raw material of following weight portion: oxidized paraffin wax 3-5, n-butanol 20-24, oleic acid 6-8, castor oil acid 2-3, calgon 4-7, methyl alcohol 50-55, diesel oil 30-35, auxiliary agent 4-5, water 40-50. The present invention uses multi-solvents and water, under the effect of surfactant, forms stable emulsification system, change the interfacial tension of silicon and carborundum, the two has been separated to the auxiliary agent of the application of the invention, make separating of silicon and carborundum more thorough, the carborundum powder purity obtaining is higher; Avoid using high speed centrifugation mode, improved economic benefit.
Description
Technical field
The present invention relates to silicon in mortar that silicon wafer wire saw technique produces and the powder separation technology field of carborundum, relate in particular to the flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar.
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 the flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar, use this flotation agent carborundum rate of recovery high, carborundum purity is high.
Technical scheme of the present invention is as follows:
Purify in the mortar flotation agent of carborundum, is characterized in that being made up of the raw material of following weight portion: oxidized paraffin wax 3-5, n-butanol 20-24, oleic acid 6-8, castor oil acid 2-3, calgon 4-7, methyl alcohol 50-55, diesel oil 30-35, auxiliary agent 4-5, water 40-50. 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 flotation agent of carborundum purifies in described mortar, it is characterized in that comprising the following steps: water, oxidized paraffin wax, calgon, methyl alcohol, n-butanol are mixed, be heated to 35-45 DEG C, add oleic acid, castor oil acid, diesel oil, stir, be heated to 60-70 DEG C, add other residual components, stir 15-19 minute, to obtain final product.
While using this flotation agent, 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
The present invention uses multi-solvents and water, under the effect of surfactant, forms stable emulsification system, change the interfacial tension of silicon and carborundum, the two has been separated to the auxiliary agent of the application of the invention, make separating of silicon and carborundum more thorough, the carborundum powder purity obtaining is higher; Avoid using high speed centrifugation mode, improved economic benefit.
Detailed description of the invention
Purify in the mortar flotation agent of carborundum, by following weight portion (kilogram) raw material make: oxidized paraffin wax 4, n-butanol 22, oleic acid 7, castor oil acid 2.5, calgon 6, methyl alcohol 53, diesel oil 33, auxiliary agent 4.5, water 45. Described auxiliary agent by following weight portion (kilogram) raw material mix: 12-15% hydrochloric acid solution 20, ethanol 40, dispersing agent MF 4, water 100.
The preparation method of flotation agent of carborundum purifies in described mortar, comprise the following steps: water, oxidized paraffin wax, calgon, methyl alcohol, n-butanol are mixed, be heated to 40 DEG C, add oleic acid, castor oil acid, diesel oil, stir, be heated to 65 DEG C, add other residual components, stir 17 minutes, 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 0.3%wt, and carborundum remaining in mortar is less than 5%wt.
Claims (1)
1. purify in the mortar flotation agent of carborundum, is characterized in that being made up of the raw material of following weight portion: oxidized paraffin wax 3-5, n-butanol 20-24, oleic acid 6-8, castor oil acid 2-3, calgon 4-7, methyl alcohol 50-55, diesel oil 30-35, auxiliary agent 4-5, water 40-50; 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 flotation agent of carborundum purifies in described mortar, comprise the following steps: water, oxidized paraffin wax, calgon, methyl alcohol, n-butanol are mixed, be heated to 35-45 DEG C, add oleic acid, castor oil acid, diesel oil, stir, be heated to 60-70 DEG C, add other residual components, stir 15-19 minute, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615103.4A CN103611635B (en) | 2013-11-28 | 2013-11-28 | The flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615103.4A CN103611635B (en) | 2013-11-28 | 2013-11-28 | The flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar |
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| Publication Number | Publication Date |
|---|---|
| CN103611635A CN103611635A (en) | 2014-03-05 |
| CN103611635B true CN103611635B (en) | 2016-05-04 |
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| CN201310615103.4A Expired - Fee Related CN103611635B (en) | 2013-11-28 | 2013-11-28 | The flotation agent of carborundum and preparation method thereof of purifying in a kind of mortar |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491888A (en) * | 2009-03-05 | 2009-07-29 | 南昌大学 | Foam flotation method capable of separating silicon powder and carbon silicon powder |
| CN101623852A (en) * | 2009-03-05 | 2010-01-13 | 周浪 | Method separating silicon powder and silicon carbide powder by interface tension |
| CN102600988A (en) * | 2012-03-08 | 2012-07-25 | 浙江大学 | Foam flotation method for separating silicon powder from silicon carbide powder |
| CN102765722A (en) * | 2012-08-08 | 2012-11-07 | 铁生年 | Method for recovering and separating silicone and silicon carbide powder through foam flotation in silicon wafer cutting effluent |
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2013
- 2013-11-28 CN CN201310615103.4A patent/CN103611635B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491888A (en) * | 2009-03-05 | 2009-07-29 | 南昌大学 | Foam flotation method capable of separating silicon powder and carbon silicon powder |
| CN101623852A (en) * | 2009-03-05 | 2010-01-13 | 周浪 | Method separating silicon powder and silicon carbide powder by interface tension |
| CN102600988A (en) * | 2012-03-08 | 2012-07-25 | 浙江大学 | Foam flotation method for separating silicon powder from silicon carbide powder |
| CN102765722A (en) * | 2012-08-08 | 2012-11-07 | 铁生年 | Method for recovering and separating silicone and silicon carbide powder through foam flotation in silicon wafer cutting effluent |
Non-Patent Citations (1)
| Title |
|---|
| 硅片线锯废砂浆中硅与碳化硅分离技术研究;贺欢欢;《中国优秀硕士学位论文全文数据库（电子期刊）》;20130131;第14-16页 * |
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| CN103611635A (en) | 2014-03-05 |
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Granted publication date: 20160504 Termination date: 20211128 |