CN102897993A - Method for preparing high-purity quartz sands by using natural vein quartz ores - Google Patents
Method for preparing high-purity quartz sands by using natural vein quartz ores Download PDFInfo
- Publication number
- CN102897993A CN102897993A CN2012104119275A CN201210411927A CN102897993A CN 102897993 A CN102897993 A CN 102897993A CN 2012104119275 A CN2012104119275 A CN 2012104119275A CN 201210411927 A CN201210411927 A CN 201210411927A CN 102897993 A CN102897993 A CN 102897993A
- Authority
- CN
- China
- Prior art keywords
- quartz
- quartz sand
- flotation
- drying
- sand
- 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.)
- Pending
Links
Landscapes
- Silicon Compounds (AREA)
Abstract
The invention relates to a method for preparing high-purity quartz sands by using natural vein quartz ores, which belongs to the technical field of ore machining and raw materials for a quartz glass crucible for producing a drawn monocrystalline silicon. The method comprises the following steps of: using the natural vein quartz ores as raw materials; carrying out high temperature calcining-water quenching on the natural vein quartz ores so as to remove inclusions in the natural vein quartz ores and impurities in gaps of the vein quartz ores; removing almost trace element impurities through a flotation and mixed acid impregnation technology; and finally, washing the vein quartz ores by using ethanol-deionized water to furthest remove organic impurities introduced in the flotation and acid pickling process and other soluble impurities, so as to obtain the high-purity quartz sands, wherein the raw materials are provided for preparing the quartz glass crucible for producing the drawn monocrystalline silicon.
Description
Technical field
The present invention relates to a kind of method that adopts natural quartz deposit to prepare glass sand, belong to mineral processing and produce pulling monocrystal silicon quartz glass crucibles raw material technical field.
Background technology
High purity quartz purity requirement SiO
2Content is more than 99.99%, because having excellent high-temperature thermal stability and chemical stability, electrical insulating property, optics and radiation-resistant property, is widely used in fields such as electronic industry, semi-conductor, aerospace, opticfiber communication.Usually, monocrystalline silicon growing is very strict with the material purity requirement of quartz glass crucibles, if the aluminium content overproof can affect the purity of pulling monocrystal silicon, when sodium, when the potassium equal size is too high, the softening temperature of quartz crucible reduces greatly, can't carry out crystal pulling.Along with the fast development of hi-tech industry, the crystal product specification of quality is also improving constantly, and the Crystal Resances trend is exhausted, all is faced with the in short supply of high grade quartz raw material in the world wide.In order to tackle this crisis, high purity quartz is sought as the articles for use that replace of crystal by the developed countries such as U.S., moral, day.Domesticly many research work have also been carried out in this respect, although seek out some effective methods of purification through years of researches, the requirement that quartzy purity does not still reach hi-tech industry, the main dependence on import of its raw material sources.In addition, China's quartz sand dopant species, occurrence status and distribute differently give to be purified and also to have been brought great difficulty.The purifying technique key is in the control of flotation and acidleach condition, although method for floating by there being the fluorine method to be converted into floride-free method, floride-freely can not show a candle to free-floride without acid system and have acid system ripe, therefore be not applied to industrial production; In recent years the experimental study that many focus of attention acidleach are purified, but different because of kind, experiment condition and the method for used acid, refining effect also is not quite similar.
The present invention is directed to natural quartz deposit, on the basis of its process mineralogy of research, proposed a kind ofly except traditional technology is improved, also the quartz sand after the flotation is carried out respectively the method that classification and pyroprocessing prepare glass sand.That the method has advantages of is simple, with low cost, be suitable for scale operation, for the comprehensive utilization quartz deposit and promote the fast-developing significant of sun power industry.
Summary of the invention
Main purpose of the present invention provides a kind of method that adopts natural quartz deposit to prepare glass sand.It is raw material that the present invention adopts natural quartz deposit, through to its high-temperature calcination-shrend remove wherein inclusion and the impurity in the quartz deposit crack; Remove most micro-impurity by flotation, nitration mixture soaking technology again; At last it is adopted ethanol-washed with de-ionized water, farthest remove other impurity and some soluble impurities that flotation and acid cleaning process process are introduced, obtain glass sand, produce pulling monocrystal silicon for preparation and supply raw materials with quartz glass crucibles.
Its processing step and principle are as follows:
(1) screening: choose the measured vein quartz raw ore of matter, and with impurity and the foreign bodies removal of its saliency.
(2) calcining-shrend: be incubated 1～5h after placing retort furnace to be heated to 900～1100 ℃ the block vein quartz of select, after calcining finishes sample ore taken out and directly put into quenching-in water.
(3) drying-fragmentation-grinding: the sample of above-mentioned processing is placed vacuum drying oven, carry out abundant drying.The vein quartz piece is crushed to particle diameter less than the fritter of 1～5cm after adopting jaw crusher to drying, and recycling sealed analysis and sample making pulverizer is micron-sized quartz sand with fragment grinding to particle diameter.
(4) flotation: the quartz sand H that step (3) is obtained
2SO
4It is 5.0～7.0 solution that preparing solution becomes pH, then adds an amount of different flotation agent and carries out flotation process in flotation cell, and feldspar and the less impurity of other density are removed.
(5) washing-drying: the impurity that obtains flotation agent remaining in the quartz sand and surface with deionized water flush away above-mentioned steps; Then be placed in the vacuum drying oven, be heated to 110～150 ℃ and carry out abundant drying.
(6) high-temperature calcination: the quartz sand that step (5) is obtained carries out calcination processing at 1200～1400 ℃.
(7) nitration mixture dipping: the quartz sand after the high-temperature calcination is added steeping vat after the mixed acid solution mixing (wherein pulp density is 50%) of certain proportioning, insulated and stirred reaction after water-bath is heated to 50～95 ℃, reaction times is 0.5～3h, to remove most micro-impurity in the quartz sand.
(8) ethanol-washed with de-ionized water: under the room temperature condition, the quartz sand that step (7) is obtained adds in the ethanol while stirring dipping, repeats more than 7 times; Then it is washed more than 10 times with appropriate amount of deionized water, until neutral.
(9) freeze-day with constant temperature: with certain drying plant quartz sand obtained above is carried out drying, obtain pulling monocrystal silicon production quartz crucible raw material.
Embodiment
Embodiment one:
(1) screening: choose the measured vein quartz raw ore of matter, and with impurity and the foreign bodies removal of its saliency.
(2) calcining-shrend: be incubated 1h after placing retort furnace to be heated to 900 ℃ the block vein quartz of select, after calcining finishes sample ore taken out and directly put into quenching-in water.
(3) drying-fragmentation-grinding: the sample of above-mentioned processing is placed vacuum drying oven, carry out abundant drying.The vein quartz piece is crushed to particle diameter less than the fritter of 2cm after adopting jaw crusher to drying, and recycling sealed analysis and sample making pulverizer (GJ-2) is the quartz sand of 2～100 μ m to particle diameter with the fragment grinding.
(4) flotation: take by weighing the quartz sand 200g that step (3) obtains, with appropriate amount of deionized water and 20%H
2SO
4Preparing solution becomes the solution of pH=5.0, take sodium oleate as the feldspar activator, Sodium hexametaphosphate 99 is quartzy inhibitor, dodecylamine hydrochloride is the feldspar collecting agent, join it into certain proportioning (flotation reagent batching design be shown in Table 1) and to carry out flotation in the flotation cell that fills mixed slurry and process, flotation time is 20min, utilizes difference quartzy and the feldspar zero point, and feldspar and the less impurity of other density are removed.
(5) washing-drying: the impurity that obtains flotation agent remaining in the quartz sand and surface with deionized water flush away above-mentioned steps; Then be placed in the vacuum drying oven, be heated to 110 ℃ and carry out abundant drying.
(6) high-temperature calcination: the quartz sand that step (5) is obtained carries out calcination processing at 1200 ℃, 1400 ℃ respectively.
(7) nitration mixture dipping: with the quartz sand after the pyroprocessing and employing H
2SO
4, HCl, HNO
3After solution (concentration and the proportioning are shown in Table 3) mixing of HF mixed preparing, add steeping vat, the concentration that makes ore pulp is 50%, stirring reaction 1h under the insulation be heated to 50 ℃ in water-bath after is to remove the micro-impurity that is dissolved in after inclusion and crack break in the quartz sand particle in the solution.
(8) ethanol-washed with de-ionized water: through the quartz sand that nitration mixture soaks, surface attachment has the soluble impurity that soaks out, and not only can affect composition analysis, also can emit harmful sour gas, contaminate environment and etching apparatus when drying.Under the room temperature condition, the quartz sand that step (7) is obtained adds in the ethanol while stirring dipping, repeats about 7 times, and the impurity of promotion quartz sand surface and the raffinate after the pickling are to Liquid Phase Diffusion; Then it is washed more than 10 times with appropriate amount of deionized water, until neutral.
(9) freeze-day with constant temperature: with certain drying plant quartz sand obtained above is carried out drying, temperature is 110 ℃, and the time is 2h, obtains glass sand 1, and its purity reaches more than 99.995%, and wherein the micro-foreign matter content of part is shown in Table 4.
Embodiment two:
(1) screening: choose the measured vein quartz raw ore of matter, and with impurity and the foreign bodies removal of its saliency.
(2) calcining-shrend: be incubated 1h after placing retort furnace to be heated to 900 ℃ the block vein quartz of select, after calcining finishes sample ore taken out and directly put into quenching-in water.
(3) drying-fragmentation-grinding: the sample of above-mentioned processing is placed vacuum drying oven, carry out abundant drying.The vein quartz piece is crushed to particle diameter less than the fritter of 2cm after adopting jaw crusher to drying, and recycling sealed analysis and sample making pulverizer is the quartz sand of 2～100 μ m to particle diameter with the fragment grinding.
(4) flotation: take by weighing the quartz sand 200g that step (3) obtains, with appropriate amount of deionized water and 20%H
2SO
4Preparing solution becomes the solution of pH=5.0, take sodium oleate as the feldspar activator, Sodium hexametaphosphate 99 is quartzy inhibitor, the stearylamine hydrochloride is the feldspar collecting agent, join it into certain proportioning (flotation reagent batching design be shown in Table 2) and to carry out flotation in the flotation cell that fills mixed slurry and process, flotation time is 20min, utilizes difference quartzy and the feldspar zero point, and feldspar and other density are removed less than 1 impurity.
(5) washing-drying: the impurity that obtains flotation agent remaining in the quartz sand and surface with deionized water flush away above-mentioned steps; Then be placed in the vacuum drying oven, be heated to 110 ℃ and carry out abundant drying.
(6) high-temperature calcination: the quartz sand that step (5) is obtained carries out calcination processing at 1200 ℃, 1400 ℃ respectively.
(7) nitration mixture dipping: with the quartz sand after the pyroprocessing and employing H
2SO
4, HCl, HNO
3After solution (concentration and the proportioning are shown in Table 3) mixing of HF mixed preparing, add steeping vat, the concentration that makes ore pulp is 50%, stirring reaction 1h under the insulation be heated to 50 ℃ in water-bath after is to remove the micro-impurity that is dissolved in after inclusion and crack break in the quartz sand particle in the solution.
(8) ethanol-washed with de-ionized water: through the quartz sand that nitration mixture soaks, surface attachment has the soluble impurity that soaks out, and not only can affect composition analysis, also can emit harmful sour gas, contaminate environment and etching apparatus when drying.Under the room temperature condition, the quartz sand that step (7) is obtained adds in the ethanol while stirring dipping, repeats about 7 times, and the impurity of promotion quartz sand surface and the raffinate after the pickling are to Liquid Phase Diffusion; Then it is washed more than 10 times with appropriate amount of deionized water, until neutral.
(9) freeze-day with constant temperature: with certain drying plant quartz sand obtained above is carried out drying, temperature is 110 ℃, and the time is 2h, obtains glass sand 2, and its purity reaches more than 99.99%, and wherein the micro-foreign matter content of part is shown in Table 5.
The design of table 1 flotation reagent batching
| Raw material | Amino dodecane | Sodium hexametaphosphate 99 | Sodium oleate |
| Massfraction wt% | 11.84 | 65.79 | 22.37 |
The design of table 2 flotation reagent batching
| Raw material | Stearylamine | Sodium hexametaphosphate 99 | Sodium oleate |
| Massfraction wt% | 11.84 | 65.79 | 22.37 |
Each sour concentration and proportioning in table 3 mixed acid solution
| Reagent | H 2SO 4 | HCl | HNO 3 | HF |
| Concentration (%) | 20 | 18 | 10 | 5 |
| Proportioning | 10 | 5 | 3 | 2 |
The micro-foreign matter content of part in table 4 glass sand 1
The micro-foreign matter content of part in table 5 glass sand 2
Claims (4)
1. method that adopts natural quartz deposit to prepare glass sand, it is characterized in that: described preparation method comprises following steps,
(1) screening: choose the measured vein quartz raw ore of matter, and with impurity and the foreign bodies removal of its saliency.
(2) calcining-shrend: be incubated 1～5h after placing retort furnace to be heated to 900～1100 ℃ the block vein quartz of select, after calcining finishes sample ore taken out and directly put into quenching-in water.
(3) drying-fragmentation-grinding: the sample of above-mentioned processing is placed vacuum drying oven, carry out abundant drying.The vein quartz piece is crushed to particle diameter less than the fritter of 1～5cm after adopting jaw crusher to drying, and recycling sealed analysis and sample making pulverizer is micron-sized quartz sand with fragment grinding to particle diameter.
(4) flotation: the quartz sand H that step (3) is obtained
2SO
4It is 5.0～7.0 solution that preparing solution becomes pH, then adds an amount of different flotation agent and carries out flotation process in flotation cell, and feldspar and the less impurity of other density are removed.
(5) washing-drying: the impurity that obtains flotation agent remaining in the quartz sand and surface with deionized water flush away above-mentioned steps; Then be placed in the vacuum drying oven, be heated to 110～150 ℃ and carry out abundant drying.
(6) high-temperature calcination: the quartz sand that step (5) is obtained carries out calcination processing at 1200～1400 ℃.
(7) nitration mixture dipping: the quartz sand after the pyroprocessing is added steeping vat after the mixed acid solution mixing (wherein pulp density is 50%) of certain proportioning, insulated and stirred reaction after water-bath is heated to 50～95 ℃, reaction times is 0.5～3h, to remove most micro-impurity in the quartz sand.
(8) ethanol-washed with de-ionized water: under the room temperature condition, the quartz sand that step (7) is obtained adds in the ethanol while stirring dipping, repeats more than 7 times; Then it is washed more than 10 times with appropriate amount of deionized water, until neutral.
(9) freeze-day with constant temperature: with certain drying plant quartz sand obtained above is carried out drying, obtain pulling monocrystal silicon production quartz crucible raw material.
2. according to claims 1 described a kind of method that adopts natural quartz deposit to prepare glass sand, it is characterized in that: described high-temperature calcination is that the quartz sand particle after flotation, the cleaning is carried out calcination processing under 1200～1400 ℃ condition, further to remove gas, the liquid that may exist in the quartz sand small-particle or to mix inclusion and other volatile impurity.
3. according to claims 1 described a kind of method that adopts natural quartz deposit to prepare glass sand, it is characterized in that: described nitration mixture dipping is with the H of the quartz sand after the high-temperature calcination processing with certain proportioning
2SO
4, HCl, HNO
3After mixing (wherein pulp density is 50%), HF adds steeping vat, insulated and stirred reaction after water-bath is heated to 50～95 ℃, and the reaction times is 0.5～3h, to remove most micro-impurity in the quartz sand.
4. according to claims 1 described a kind of method that adopts natural quartz deposit to prepare glass sand, it is characterized in that: described ethanol-washed with de-ionized water is the quartz sand behind the nitration mixture dipping to be added in the ethanol to flood while stirring at ambient temperature, repeats more than 7 times; Then it is washed more than 10 times with appropriate amount of deionized water, until neutral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104119275A CN102897993A (en) | 2012-10-25 | 2012-10-25 | Method for preparing high-purity quartz sands by using natural vein quartz ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104119275A CN102897993A (en) | 2012-10-25 | 2012-10-25 | Method for preparing high-purity quartz sands by using natural vein quartz ores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102897993A true CN102897993A (en) | 2013-01-30 |
Family
ID=47570529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104119275A Pending CN102897993A (en) | 2012-10-25 | 2012-10-25 | Method for preparing high-purity quartz sands by using natural vein quartz ores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102897993A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539133A (en) * | 2013-11-05 | 2014-01-29 | 武汉理工大学 | Method for preparing ultralow-metallic-element ultrahigh-purity quartz through mixed acid hot-pressing leaching reaction |
| CN103736597A (en) * | 2013-12-30 | 2014-04-23 | 新疆有色金属研究所 | Feldspar or quartz surface cleaning method |
| CN104003405A (en) * | 2014-06-06 | 2014-08-27 | 浠水县精纯石英砂厂 | Environment-friendly method for preparing high-purity quartz sand by utilizing vein quartz and quartz stone calcining furnace |
| CN104743779A (en) * | 2015-03-23 | 2015-07-01 | 连云港福东正佑照明电器有限公司 | Preparation method of quartz raw material for low-deformation-rate crucible applicable to production of single crystals |
| CN105218008A (en) * | 2015-09-30 | 2016-01-06 | 安徽坤隆新型建材有限公司 | A kind of aerated bricks anticracking grout |
| CN105218142A (en) * | 2015-09-30 | 2016-01-06 | 安徽坤隆新型建材有限公司 | A kind of aerated bricks mortar |
| CN105218143A (en) * | 2015-09-30 | 2016-01-06 | 安徽坤隆新型建材有限公司 | A kind of high ductility aerated bricks mortar |
| CN105271990A (en) * | 2015-09-30 | 2016-01-27 | 安徽坤隆新型建材有限公司 | Composite modified mortar for air-entrained bricks |
| CN106566524A (en) * | 2016-11-03 | 2017-04-19 | 重庆长江造型材料（集团）股份有限公司 | Preparation process for quartz sand fracturing proppant |
| CN106753317A (en) * | 2016-11-21 | 2017-05-31 | 四川南联环资科技股份有限公司 | A kind of method that utilization quartz tail sand produces oil well proppant |
| CN109384244A (en) * | 2018-12-29 | 2019-02-26 | 黄冈师范学院 | A kind of process using industrial silicon ash oxidation purification fine silica powder |
| CN109399649A (en) * | 2018-12-27 | 2019-03-01 | 王平 | A kind of preparation process applied to high purity sand |
| CN110898982A (en) * | 2019-12-02 | 2020-03-24 | 凯盛石英材料（太湖）有限公司 | Method for preparing optical glass raw material by adopting river channel wastes |
| CN112357925A (en) * | 2020-11-12 | 2021-02-12 | 徐州融鑫新材料有限公司 | Purification process for quartz sand by using microorganisms |
| CN114031086A (en) * | 2021-12-02 | 2022-02-11 | 江苏联瑞新材料股份有限公司 | Preparation method of high-purity low-uranium submicron spherical silicon dioxide micropowder |
| CN115010138A (en) * | 2022-07-25 | 2022-09-06 | 宁远华创粉体材料有限公司 | Preparation process of high-efficiency, energy-saving and environment-friendly high-purity quartz sand |
| CN115709999A (en) * | 2022-11-23 | 2023-02-24 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Method for extracting high-purity quartz sand from granite pegmatite |
| CN115849393A (en) * | 2022-08-01 | 2023-03-28 | 西南科技大学 | High-purity quartz and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4123287A1 (en) * | 1991-07-13 | 1991-11-21 | Reinhard Knof | Treatment of silica granulate to remove inclusions - uses hydrofluoric acid mixed with organic acid to reduce dissolution of silica from clean material and increase removal of inclusions |
| CN101254923A (en) * | 2008-04-07 | 2008-09-03 | 安徽工业大学 | Method for preparing high-purity ground quartz |
| CN101391871A (en) * | 2007-09-18 | 2009-03-25 | 晟茂（青岛）先进材料有限公司 | Method for preparing high purity quartz sand |
| CN102432022A (en) * | 2011-08-26 | 2012-05-02 | 田辉明 | Method for producing ultra-pure quartz sand by vein quartz and high-temperature chlorination device |
| CN102602942A (en) * | 2012-03-25 | 2012-07-25 | 连云港金瑞照明电器有限公司 | Method for preparing high-purity quartz sand |
-
2012
- 2012-10-25 CN CN2012104119275A patent/CN102897993A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4123287A1 (en) * | 1991-07-13 | 1991-11-21 | Reinhard Knof | Treatment of silica granulate to remove inclusions - uses hydrofluoric acid mixed with organic acid to reduce dissolution of silica from clean material and increase removal of inclusions |
| CN101391871A (en) * | 2007-09-18 | 2009-03-25 | 晟茂（青岛）先进材料有限公司 | Method for preparing high purity quartz sand |
| CN101254923A (en) * | 2008-04-07 | 2008-09-03 | 安徽工业大学 | Method for preparing high-purity ground quartz |
| CN102432022A (en) * | 2011-08-26 | 2012-05-02 | 田辉明 | Method for producing ultra-pure quartz sand by vein quartz and high-temperature chlorination device |
| CN102602942A (en) * | 2012-03-25 | 2012-07-25 | 连云港金瑞照明电器有限公司 | Method for preparing high-purity quartz sand |
Non-Patent Citations (1)
| Title |
|---|
| 侯清麟等: "石英-长石的浮选分离工艺研究", 《湖南工业大学学报》, vol. 25, no. 3, 31 May 2011 (2011-05-31), pages 27 - 30 * |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539133B (en) * | 2013-11-05 | 2015-07-22 | 武汉理工大学 | Method for preparing ultralow-metallic-element ultrahigh-purity quartz through mixed acid hot-pressing leaching reaction |
| CN103539133A (en) * | 2013-11-05 | 2014-01-29 | 武汉理工大学 | Method for preparing ultralow-metallic-element ultrahigh-purity quartz through mixed acid hot-pressing leaching reaction |
| CN103736597B (en) * | 2013-12-30 | 2016-02-17 | 新疆有色金属研究所 | The method of feldspar or quartz mineral surface clean |
| CN103736597A (en) * | 2013-12-30 | 2014-04-23 | 新疆有色金属研究所 | Feldspar or quartz surface cleaning method |
| CN104003405A (en) * | 2014-06-06 | 2014-08-27 | 浠水县精纯石英砂厂 | Environment-friendly method for preparing high-purity quartz sand by utilizing vein quartz and quartz stone calcining furnace |
| CN104743779A (en) * | 2015-03-23 | 2015-07-01 | 连云港福东正佑照明电器有限公司 | Preparation method of quartz raw material for low-deformation-rate crucible applicable to production of single crystals |
| CN104743779B (en) * | 2015-03-23 | 2017-03-29 | 连云港福东正佑照明电器有限公司 | Suitable for the preparation method of the low deformation rate crucible quartz raw material of monocrystalline production |
| CN105218008A (en) * | 2015-09-30 | 2016-01-06 | 安徽坤隆新型建材有限公司 | A kind of aerated bricks anticracking grout |
| CN105271990A (en) * | 2015-09-30 | 2016-01-27 | 安徽坤隆新型建材有限公司 | Composite modified mortar for air-entrained bricks |
| CN105218143A (en) * | 2015-09-30 | 2016-01-06 | 安徽坤隆新型建材有限公司 | A kind of high ductility aerated bricks mortar |
| CN105218142A (en) * | 2015-09-30 | 2016-01-06 | 安徽坤隆新型建材有限公司 | A kind of aerated bricks mortar |
| CN106566524A (en) * | 2016-11-03 | 2017-04-19 | 重庆长江造型材料（集团）股份有限公司 | Preparation process for quartz sand fracturing proppant |
| CN106753317A (en) * | 2016-11-21 | 2017-05-31 | 四川南联环资科技股份有限公司 | A kind of method that utilization quartz tail sand produces oil well proppant |
| CN109399649A (en) * | 2018-12-27 | 2019-03-01 | 王平 | A kind of preparation process applied to high purity sand |
| CN109384244A (en) * | 2018-12-29 | 2019-02-26 | 黄冈师范学院 | A kind of process using industrial silicon ash oxidation purification fine silica powder |
| CN109384244B (en) * | 2018-12-29 | 2022-03-04 | 黄冈师范学院 | Process method for purifying silica micropowder by using industrial silica fume oxidation |
| CN110898982A (en) * | 2019-12-02 | 2020-03-24 | 凯盛石英材料（太湖）有限公司 | Method for preparing optical glass raw material by adopting river channel wastes |
| CN110898982B (en) * | 2019-12-02 | 2021-10-26 | 凯盛石英材料（太湖）有限公司 | Method for preparing optical glass raw material by adopting river channel wastes |
| CN112357925A (en) * | 2020-11-12 | 2021-02-12 | 徐州融鑫新材料有限公司 | Purification process for quartz sand by using microorganisms |
| CN114031086A (en) * | 2021-12-02 | 2022-02-11 | 江苏联瑞新材料股份有限公司 | Preparation method of high-purity low-uranium submicron spherical silicon dioxide micropowder |
| CN115010138A (en) * | 2022-07-25 | 2022-09-06 | 宁远华创粉体材料有限公司 | Preparation process of high-efficiency, energy-saving and environment-friendly high-purity quartz sand |
| CN115849393A (en) * | 2022-08-01 | 2023-03-28 | 西南科技大学 | High-purity quartz and preparation method thereof |
| CN115709999A (en) * | 2022-11-23 | 2023-02-24 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Method for extracting high-purity quartz sand from granite pegmatite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102897993A (en) | Method for preparing high-purity quartz sands by using natural vein quartz ores | |
| CN103332694B (en) | Preparation method of raw material sand for quartz crucible | |
| CN102602942B (en) | Method for preparing high-purity quartz sand | |
| CN102674372B (en) | Purification method for high-purity quartz with ultra-low metal elements | |
| CN101948235B (en) | Method for preparing high-purity quartz sand | |
| CN102887516A (en) | Production method of high-purity quartz sand | |
| CN102180584A (en) | Method for removing gas-liquid inclusion and impurity during high-purity quartz sand production | |
| CN107651690B (en) | A kind of method of diamond wire cutting waste material preparation high-quality silicon carbide | |
| CN101391871A (en) | Method for preparing high purity quartz sand | |
| CN106082239B (en) | A kind of high-purity low-iron quartz sand purifying preparation method | |
| CN104340981A (en) | Preparation method for high-purity quartz sand | |
| CN107185708A (en) | A kind of method that high-purity quartz is prepared with mine tailing | |
| CN109336116A (en) | A method of photovoltaic high purity quartz emery dust is prepared containing feldspar ore type quartzite | |
| CN103663465A (en) | Quartz sand purifying technology | |
| CN111153409A (en) | Method for purifying quartz sand by removing iron through microwave heating and ultrasonic-assisted acid leaching | |
| CN101362600B (en) | Method for removing boron from polysilicon by wet metallargy | |
| CN102923752A (en) | New method for decolorizing and whitening phosphogypsum | |
| CN104986773A (en) | Purifying process for quartz raw materials for ultra-clear glass | |
| CN112593083A (en) | Process for recovering germanium from germanium-containing luminescent glass microcrystalline material | |
| CN102746936A (en) | Recycling purification method for carborundum powder in silicon slice cutting waste liquid | |
| CN103183351B (en) | The method of chloridizing roasting-leaching method purifying silicon dioxide ore | |
| CN109019609A (en) | The method of purification of natural powdery quartz, high-purity konilite and quartz ware | |
| CN105692606A (en) | Method for purifying aphanitic graphite flotation concentrate | |
| CN109265010B (en) | Lithium porcelain stone tailing microcrystalline glass and preparation method thereof | |
| CN108793170B (en) | Industrial silicon acid pickling process after ventilation, slagging, smelting and pretreatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |