CN103896286A - Process for preparing high-purity quartz by using powdered silica - Google Patents
Process for preparing high-purity quartz by using powdered silica Download PDFInfo
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- CN103896286A CN103896286A CN201410161996.4A CN201410161996A CN103896286A CN 103896286 A CN103896286 A CN 103896286A CN 201410161996 A CN201410161996 A CN 201410161996A CN 103896286 A CN103896286 A CN 103896286A
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Abstract
The invention discloses a process for preparing high-purity quartz by using powdered silica. Through the steps of mineral processing, calcining and water quenching, grinding, magnetic separation, electrostatic separation, acid pickling, deionized water cleaning, drying and the like, high-purity quartz with a SiO2 content of greater than or equal to 99.95% is obtained. The process disclosed by the invention has the advantages of low raw material price, rich mineral reserves, simple and reasonable technological process, high SiO2 content, energy conservation and environmental protection, and the like.
Description
Technical field
The present invention relates to high-purity quartz and manufacture field, specifically relate to the technique that a kind of high tripoli is prepared high-purity quartz.
Background technology
High-purity quartz material has excellent physics-chem characteristic, and hardness is high, high temperature resistant, corrosion-resistant, electric conductivity is low, wave penetrate capability is good, stable performance.Particularly its inherent molecular chain structure, crystal shape and lattice variations rule, the thermal expansivity that makes it have is little, high-insulation, piezoelectric effect, resonance effect with and unique optical characteristics, obtain applying more and more widely as fields such as the sealing-in of Novel electric light source, microelectronics, high insulation, aerospace, defence and militaries in many high-tech areas.
High-purity quartz material is prepared in domestic main use crystal, quartz deposit (CN103086382A) and high-quality quartz sand (CN101391871A) ore deposit.Due to these several raw material mineral reserve scarcities, expensive, complicated process of preparation, be difficult to meet growing demand.
Summary of the invention
The invention provides a kind of high tripoli and prepare the technique of high-purity quartz, through ore dressing → calcining → shrend → abrasive dust → magnetic separation → electrostatic separation → pickling → washed with de-ionized water → operations such as oven dry, obtain SiO
2the high-purity quartz of content>=99.95%.
Prepare the technique of high-purity quartz with high tripoli, SiO in described high tripoli
2content>=98%.
In above-mentioned technique, calcining temperature is 850～900 ℃, and calcining duration is 1 hour.
In above-mentioned technique, after abrasive dust, particle diameter reaches 1800 orders.
In above-mentioned technique, adopting magnetic strength is 50～15000 Gausses' magnetic plant, effectively removes iron, ferrotianium class ferromagnetism and weak magnetic impurity.
In above-mentioned technique, adopting voltage is 20～30 kilovolts of electrostatic separators, removes non magnetic ore deposit in mineral as impurity such as potassium, albite, aluminium, micas.
In above-mentioned technique, adopt the mixing solutionss such as hydrochloric acid, oxalic acid, citric acid and hydrofluoric acid to carry out pickling.
The high-purity quartz SiO that adopts above-mentioned technique to obtain
2content>=99.95%.
The present invention compared with prior art has the following advantages:
1, the present invention utilizes and domesticly enriches high tripoli for raw material, cheap, has reduced the manufacturing cost of high-purity quartz, and economic benefit is high.
2, preparation technology of the present invention is simple, advanced technology, good impurity removing effect.
3, the high-purity quartz SiO that technique of the present invention obtains
2content>=99.95%, meets the need of market.
Accompanying drawing explanation
Fig. 1 is process flow sheet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, to make those skilled in the art can implement according to this with reference to specification sheets word.
Select and use SiO
2the high tripoli raw ore of content>=98%; The ore deposit soil that selection meets the demands is put into calcining furnace and is calcined, and calcining temperature is 850～900 ℃, and calcining duration is 1 hour; Ore deposit soil after calcining enters chilling in water, makes mineral structure become loose; Ore deposit soil with the high silicon liner ultra-fine grinding mill of homogenous medium material after to shrend carries out Ultrafine Grinding and reaches 1800 orders; Adopting magnetic strength is 50～15000 Gausses' magnetic plant, effectively removes iron in the soil of ore deposit, ferrotianium class ferromagnetism and weak magnetic impurity; To adopt voltage be 20～30 kilovolts of electrostatic separators, removes non magnetic ore deposit in the soil of ore deposit as impurity such as potassium, albite, aluminium, micas; Adopt the mixing solutionss such as hydrochloric acid, oxalic acid, citric acid and hydrofluoric acid to carry out pickling to ore deposit soil, remove in the soil of ore deposit the impurity such as iron, sodium, lead, calcium, aluminium, magnesium; The washing of employing deionization, effectively removes the impurity after pickling; Pass through again baking operation, obtain SiO
2the high-purity quartz of content>=99.95%.
After testing, the high-purity quartz material composition of preparation is as shown in table 1, SiO
2content>=99.95%, meets the demands.
High-purity quartz material composition (massfraction/%)
Although embodiment of the present invention are open as above, but it is not limited in listed utilization in specification sheets and embodiment, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (8)
1. high tripoli is prepared a technique for high-purity quartz, it is characterized in that, through ore dressing → calcining → shrend → abrasive dust → magnetic separation → electrostatic separation → pickling → washed with de-ionized water → operations such as oven dry, obtains SiO
2the high-purity quartz of content>=99.95%.
2. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that, SiO in described high tripoli
2content>=98%.
3. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that, calcining temperature is 850～900 ℃, and calcining duration is 1 hour.
4. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that, after abrasive dust, particle diameter reaches 1800 orders.
5. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that, adopting magnetic strength is 50～15000 Gausses' magnetic plant, effectively removes iron, ferrotianium class ferromagnetism and weak magnetic impurity.
6. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that, adopting voltage is 20～30 kilovolts of electrostatic separators, removes non magnetic ore deposit in mineral as impurity such as potassium, albite, aluminium, micas.
7. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that, adopts the mixing solutionss such as hydrochloric acid, oxalic acid, citric acid and hydrofluoric acid to carry out pickling.
8. high tripoli according to claim 1 is prepared the technique of high-purity quartz, it is characterized in that the high-purity quartz SiO of acquisition
2content>=99.95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410161996.4A CN103896286B (en) | 2014-04-21 | 2014-04-21 | The technique of high-purity quartz prepared by a kind of high tripoli |
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|---|---|---|---|
| CN201410161996.4A CN103896286B (en) | 2014-04-21 | 2014-04-21 | The technique of high-purity quartz prepared by a kind of high tripoli |
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| CN103896286A true CN103896286A (en) | 2014-07-02 |
| CN103896286B CN103896286B (en) | 2016-03-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556046A (en) * | 2014-12-23 | 2015-04-29 | 江苏泽龙石英有限公司 | Production process of preparing high-purity silica by virtue of quartz sands |
| CN105819454A (en) * | 2015-01-06 | 2016-08-03 | 华南师范大学 | Method for removing pyrite impurity from quartz |
| CN105948062A (en) * | 2016-04-28 | 2016-09-21 | 江苏凯达石英有限公司 | Preparation method of highly pure quartz sands |
| CN107626437A (en) * | 2017-09-19 | 2018-01-26 | 江苏凯达石英股份有限公司 | A kind of glass sand preparation method of ultra-low metals content |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126727A (en) * | 2010-11-25 | 2011-07-20 | 黄山恒源石英材料有限公司 | Method for purifying vein quartz under non-pickling condition |
| RU2011125742A (en) * | 2011-06-22 | 2012-12-27 | Учреждение Российской академии наук Институт геологии Карельского научного центра Российской академии наук | METHOD OF ENRICHMENT OF NATURAL QUARTZ RAW MATERIAL |
| CN103086382A (en) * | 2012-09-28 | 2013-05-08 | 刘少云 | Process for preparing high-purity quartz from vein quartz |
-
2014
- 2014-04-21 CN CN201410161996.4A patent/CN103896286B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126727A (en) * | 2010-11-25 | 2011-07-20 | 黄山恒源石英材料有限公司 | Method for purifying vein quartz under non-pickling condition |
| RU2011125742A (en) * | 2011-06-22 | 2012-12-27 | Учреждение Российской академии наук Институт геологии Карельского научного центра Российской академии наук | METHOD OF ENRICHMENT OF NATURAL QUARTZ RAW MATERIAL |
| CN103086382A (en) * | 2012-09-28 | 2013-05-08 | 刘少云 | Process for preparing high-purity quartz from vein quartz |
Non-Patent Citations (1)
| Title |
|---|
| 杨妮: "硅石制备高纯超细二氧化硅的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556046A (en) * | 2014-12-23 | 2015-04-29 | 江苏泽龙石英有限公司 | Production process of preparing high-purity silica by virtue of quartz sands |
| CN105819454A (en) * | 2015-01-06 | 2016-08-03 | 华南师范大学 | Method for removing pyrite impurity from quartz |
| CN105948062A (en) * | 2016-04-28 | 2016-09-21 | 江苏凯达石英有限公司 | Preparation method of highly pure quartz sands |
| CN105948062B (en) * | 2016-04-28 | 2018-02-13 | 江苏凯达石英有限公司 | The preparation method of glass sand |
| CN107626437A (en) * | 2017-09-19 | 2018-01-26 | 江苏凯达石英股份有限公司 | A kind of glass sand preparation method of ultra-low metals content |
| CN107626437B (en) * | 2017-09-19 | 2019-11-29 | 江苏凯达石英股份有限公司 | A kind of glass sand preparation method of ultra-low metals content |
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| CN103896286B (en) | 2016-03-02 |
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Address after: 221412 Xinyi City, Xuzhou Province town of Lake Town Industrial Park, No. 18, No. Patentee after: Jiangsu Kaida quartz Limited by Share Ltd Address before: The new city of Xinyi road 221400 Jiangsu city of Xuzhou province No. 10 Patentee before: Jiangsu Kaida Silica Co., Ltd. |
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