CN1177571A - Energy-saving silicon-extracting technology - Google Patents
Energy-saving silicon-extracting technology Download PDFInfo
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- CN1177571A CN1177571A CN97105177A CN97105177A CN1177571A CN 1177571 A CN1177571 A CN 1177571A CN 97105177 A CN97105177 A CN 97105177A CN 97105177 A CN97105177 A CN 97105177A CN 1177571 A CN1177571 A CN 1177571A
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- silicon
- energy
- coke
- burnt
- extracting technology
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The technological process for smelting metallic silicon from siliceous ore includes the following steps: breaking siliceous ore; ball-grinding to obtain siliceous ore powder; mixing the obtained siliceous ore powder with petroleum coke, binder and water; press-forming to obtain silicon-coke coagulate; placing said silicon-coke coagulate in thermal control furnace and smelting at about 1700 deg. C to obtain metallic silicon. Said silicon-coke coagulate is made into the form of column body with through holes and still more gaps, so that it possesses good air permeability and thermal conductivity, and can be quickly molten in the thermal control furnace, therefore it can save electricity consumption, save raw material, reduce labour intensity and reduce production cost.
Description
The present invention relates to a kind of energy-saving silicon-extracting technology, be applicable to metal smelting silicon.
Traditional metal smelting silicon production technique is the raw material quartzite to be crushed to diameter 2-8 centimetre bulk, around refinery coke and charcoal mix the electrode bar of pouring in the thermal control stove, produces 1700 ℃ of high-temperature fusion by electrode, through the smelting generation Pure Silicon Metal of certain hour.Because of the raw material space is few in the stove, ventilation property is poor, need combustion-supportingly and manually to stirring in the stove with charcoal, Pure Silicon Metal power consumption per ton reaches 14500～15000 and spends, and utilization rate of raw materials is low.
Task of the present invention is a kind of energy-saving silicon-extracting technology of research, adopts the production technology of the burnt coagulation body of prefabricated silicon, the purpose that reach energy-conservation, save material, reduces labor intensity.
Task of the present invention is realized by following scheme.Energy-saving silicon-extracting technology is: with the silica fragmentation, ball milling becomes silica flour, mixes with refinery coke, binding agent and water, and the repressed burnt coagulation body of silicon that is shaped in the thermal control stove of packing into, is smelted into Pure Silicon Metal under about 1700 ℃ high temperature.The burnt coagulation body of silicon is bar shape, and through hole is arranged on the cylinder.The component of the burnt coagulation body of silicon is (weight percent): silica flour 60～65%, and refinery coke 20～25%, binding agent is an amount of, moisture content 3～10%.
The burnt coagulation body of the silicon of energy-saving silicon-extracting technology provided by the present invention and design is the great discovery on the refining silicon process technology.The burnt coagulation body of silicon has more space, makes its good permeability, and heat conductivility is good in the thermal control stove, and fusion is fast, and does not need charcoal combustion-supporting.Melting Pure Silicon Metal per ton can be saved power consumption 3000 degree, saves refinery coke 15%, saves charcoal, reduces manually stirring number of times in the stove, can utilize less than the quartzite of 2cm, has reduced production cost widely.
Embodiment.The technical process of present embodiment is: silica → cleaning → cracker is milled to the burnt coagulation body of 140～150 orders → adding refinery coke, binding agent, water mixing → stirring → compression moulding → silicon → enter thermal control stove → produce under 1700 ℃ of high temperature at electrode bar → Pure Silicon Metal.The burnt coagulation body of its silicon is cylindric, diameter 5cm, and long 7cm, there is a through hole at the center, and latus rectum is 1.5cm, water content about about 15%.The component of the burnt coagulation body of silicon is: silica flour 65%, refinery coke 25%, binding agent 7%, moisture content 3%.
Claims (3)
1. energy-saving silicon-extracting technology, tool is characterised in that ball milling becomes silica flour with the silica fragmentation, mixes with stone tar, binding agent and water, the repressed burnt coagulation body of silicon that is shaped to, in the thermal control stove of packing into, melting generates Pure Silicon Metal under about 1700 ℃ high temperature.
2. energy-saving silicon-extracting technology according to claim 1 is characterized in that the burnt coagulation body of silicon is bar shape, has through hole on the cylinder.
3. energy-saving silicon-extracting technology according to claim 1 is characterized in that the component of the burnt coagulation body of silicon is (weight percent): silica flour 60～65%, and refinery coke 20～25%, binding agent is an amount of, moisture content 3～10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105177A CN1053639C (en) | 1997-07-16 | 1997-07-16 | Energy-saving silicon-extracting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97105177A CN1053639C (en) | 1997-07-16 | 1997-07-16 | Energy-saving silicon-extracting technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177571A true CN1177571A (en) | 1998-04-01 |
| CN1053639C CN1053639C (en) | 2000-06-21 |
Family
ID=5167729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97105177A Expired - Fee Related CN1053639C (en) | 1997-07-16 | 1997-07-16 | Energy-saving silicon-extracting technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1053639C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386410B (en) * | 2008-04-15 | 2011-04-27 | 南安市三晶阳光电力有限公司 | Method for softening metallic silicon smelting-furnace slag |
| CN102311116A (en) * | 2010-06-29 | 2012-01-11 | 比亚迪股份有限公司 | Industrial silicon smelting method |
| CN102786054A (en) * | 2012-09-07 | 2012-11-21 | 昆明冶金研究院 | Method for reduction smelting of microsilica |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5888113A (en) * | 1981-11-17 | 1983-05-26 | Denki Kagaku Kogyo Kk | Purification of metallic silicon |
| US4388286A (en) * | 1982-01-27 | 1983-06-14 | Atlantic Richfield Company | Silicon purification |
| CN87104483A (en) * | 1985-12-26 | 1988-12-07 | 陶氏康宁公司 | A kind of processing method with plasma smelting silicon |
-
1997
- 1997-07-16 CN CN97105177A patent/CN1053639C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386410B (en) * | 2008-04-15 | 2011-04-27 | 南安市三晶阳光电力有限公司 | Method for softening metallic silicon smelting-furnace slag |
| CN102311116A (en) * | 2010-06-29 | 2012-01-11 | 比亚迪股份有限公司 | Industrial silicon smelting method |
| CN102311116B (en) * | 2010-06-29 | 2013-03-13 | 比亚迪股份有限公司 | Industrial silicon smelting method |
| CN102786054A (en) * | 2012-09-07 | 2012-11-21 | 昆明冶金研究院 | Method for reduction smelting of microsilica |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1053639C (en) | 2000-06-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |