CN103663465A - Quartz sand purifying technology - Google Patents
Quartz sand purifying technology Download PDFInfo
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- CN103663465A CN103663465A CN201310587859.2A CN201310587859A CN103663465A CN 103663465 A CN103663465 A CN 103663465A CN 201310587859 A CN201310587859 A CN 201310587859A CN 103663465 A CN103663465 A CN 103663465A
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Abstract
The invention provides a quartz sand purifying technology, and belongs to the field of preparation process of quartz sand. The quartz sand purifying technology provided by the invention comprises the steps of crushing, scrubbing, desliming, flotation, acid leaching and microbiological leaching, and optimizing treatment is performed on all steps. The technology is simple, and excellent in purification effect, and the high-quality refined quartz sand of which the content of SiO2 is equal to or greater than 99.9%, the content of Fe2O3 is less than or equal to 0.006%, the content of Al2O3 is less than or equal to 0.05% and the content of TiO2 is less than or equal to 0.02%.
Description
Technical field
The invention belongs to the preparation technology of quartz sand, be specifically related to a kind of quartz sand purifying technique.
Background technology
Glass sand is unique raw material of high-quality silica glass for the high-technology fields such as production optical-fibre communications, electronic industry, semi-conductor, sun power, laser and aerospace, current internationally recognized glass sand element impurity standard, the glass sand that Shi Yi U.S. You Niming (UNIMIN) company produces is standard, its IOTA-CG grade is least significant end product, metallic element total impurities 22ppm ±, in 1 ton of quartz sand, the content of impurity element is less than 22 grams and just reaches glass sand standard.Glass sand is to take that the quartz mine of natural output is raw material production, in quartz mine, contain a large amount of impure minerals, mainly mica mineral and feldspathoid, during glass sand is produced, first exactly to remove impure mineral nearly all in quartz sand, for this reason, scientific worker has carried out a large amount of effort.
In quartz sand, contain iron contamination, if will obtain molten silicon micro mist, these iron contaminations must be removed.And while preparing molten silicon micro mist in prior art, usually adopt magnetic separation process, but this can only comprise removing the magnetic mineral of intergrowth particle, as impure minerals such as rhombohedral iron ore, limonite, biotite, ilmenite, pyrite and garnets, and for the film iron on quartz sand particle surface or contaminate the removal effect of iron, unsatisfactory.
Summary of the invention
For addressing the above problem, the invention provides a kind of quartz sand purifying technique, adopt following technical scheme:
A quartz sand purifying technique, is characterized in that comprising the following steps:
(1) fragmentation: raw material quartz mine is crushed to 20-40mm, obtains material A;
(2) clean: material A is carried out to mechanical scrub, obtain material B;
(3) desliming: utilize desliming bucket to remove shale and the moisture in described material B, obtain material C;
(4) flotation: by material C add water size mixing to concentration be 20 ~ 30%, add pore forming material, and add dilute sulphuric acid to pH=2.0 ~ 3.0, remove surfactant foam, the lower solid obtaining, through super-dry, obtains material D;
(5) acidleach: material D is added to mixing acid, after agitation leach 2 ~ 4h,, then dry to neutral through washing at 80 ℃, obtain material E;
(6) Microorganism Leaching: by adding water in described material E, be mixed with quartz mortar, and add microorganism leach deironing operation, then through super-dry, obtain quartz sand finished product.
Preferably, the pore forming material described in step (4) is amino dodecane acetate.
Preferably, the mixing acid described in step (5) is: 20% sulfuric acid: 36% hydrochloric acid: 70% nitric acid: hydrofluoric acid=50:25:15:10; The add-on of described mixing acid according to mass ratio is: material C: mixing acid: water=100:25:50.
Preferably, described in step (6) described in microorganism be AN bacterium.
Beneficial effect of the present invention is as follows:
1. quartz sand purifying technique provided by the invention, the operation that contains flotation, removes the aluminium impurity in quartz sand raw ore, and except aluminium rate reaches 41%, productive rate reaches 91%.
2. in quartz sand purifying technique provided by the invention, employing be hot acid agitation leach technique, consuming time short, enhance productivity.
3. in quartz sand purifying technique provided by the invention, utilize AN bacterium to leach deironing to the quartz sand after pulverizing, can remove the film iron on quartz sand particle surface or contaminate iron, make the clearance of Fe2O3 more than 76%, low 0. 006 % that reach of the grade of Fe2 O3 in selected rear quartz sand.
4. quartz sand purifying technique provided by the invention, is optimized processing to its each step, and technique is simple, and impurity elimination is effective, can obtain SiO2 >=99.9%, Fe2O3≤0.006%, Al2O3≤0.05%, the fine and quality quartz sand of TiO2≤0.02%.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
embodiment 1
A quartz sand purifying technique, comprises the following steps:
(1) fragmentation: raw material quartz mine is crushed to 20-40mm, obtains material A;
(2) clean: material A is carried out to mechanical scrub, obtain material B;
(3) desliming: utilize desliming bucket to remove shale and the moisture in described material B, obtain material C;
(4) flotation: by material C add water size mixing to concentration be 20 ~ 30%, add pore forming material amino dodecane acetate, and add dilute sulphuric acid to pH=2.0 ~ 3.0, remove surfactant foam, the lower solid obtaining, through super-dry, obtains material D;
(5) acidleach: material D is added to mixing acid, after agitation leach 2 ~ 4h,, then dry to neutral through washing at 80 ℃, obtain material E;
(6) Microorganism Leaching: by adding water in described material E, be mixed with quartz mortar, and add microorganism leach deironing operation, then through super-dry, obtain quartz sand finished product.
embodiment 2
A quartz sand purifying technique, comprises the following steps:
(1) fragmentation: raw material quartz mine is crushed to 20-40mm, obtains material A;
(2) clean: material A is carried out to mechanical scrub, obtain material B;
(3) desliming: utilize desliming bucket to remove shale and the moisture in described material B, obtain material C;
(4) flotation: by material C add water size mixing to concentration be 20 ~ 30%, add pore forming material amino dodecane acetate, and add dilute sulphuric acid to pH=2.0 ~ 3.0, remove surfactant foam, the lower solid obtaining, through super-dry, obtains material D;
(5) acidleach: material D is added to mixing acid, and (described mixing acid is: 20% sulfuric acid: 36% hydrochloric acid: 70% nitric acid: hydrofluoric acid=50:25:15:10; The add-on of described mixing acid according to mass ratio is: material C: mixing acid: water=100:25:50), at 80 ℃, after agitation leach 2 ~ 4h, through washing, to neutral, then dry, obtain material E;
(6) Microorganism Leaching: by adding water in described material E, be mixed with quartz mortar, and add microorganism leach deironing operation, then through super-dry, obtain quartz sand finished product.
Preferably, described in step (6) described in microorganism be AN bacterium.
embodiment 3
A quartz sand purifying technique, comprises the following steps:
(1) fragmentation: raw material quartz mine is crushed to 20-40mm, obtains material A;
(2) clean: material A is carried out to mechanical scrub, obtain material B;
(3) desliming: utilize desliming bucket to remove shale and the moisture in described material B, obtain material C;
(4) flotation: by material C add water size mixing to concentration be 20 ~ 30%, add pore forming material amino dodecane acetate, and add dilute sulphuric acid to pH=2.0 ~ 3.0, remove surfactant foam, the lower solid obtaining, through super-dry, obtains material D;
(5) acidleach: material D is added to mixing acid, and (described mixing acid is: 20% sulfuric acid: 36% hydrochloric acid: 70% nitric acid: hydrofluoric acid=50:25:15:10; The add-on of described mixing acid according to mass ratio is: material C: mixing acid: water=100:25:50), at 80 ℃, after agitation leach 2 ~ 4h, through washing, to neutral, then dry, obtain material E;
(6) Microorganism Leaching: by adding water in described material E, be mixed with quartz mortar, and add AN bacterium leach deironing operation, then through super-dry, obtain quartz sand finished product.
Claims (4)
1. a quartz sand purifying technique, is characterized in that comprising the following steps:
Broken: raw material quartz mine to be crushed to 20-40mm, to obtain material A;
Clean: material A is carried out to mechanical scrub, obtain material B;
(3) desliming: utilize desliming bucket to remove shale and the moisture in described material B, obtain material C;
(4) flotation: by material C add water size mixing to concentration be 20 ~ 30%, add pore forming material, and add dilute sulphuric acid to pH=2.0 ~ 3.0, remove surfactant foam, the lower solid obtaining, through super-dry, obtains material D;
(5) acidleach: material D is added to mixing acid, after agitation leach 2 ~ 4h,, then dry to neutral through washing at 80 ℃, obtain material E;
(6) Microorganism Leaching: by adding water in described material E, be mixed with quartz mortar, and add microorganism leach deironing operation, then through super-dry, obtain quartz sand finished product.
2. quartz sand purifying technique according to claim 1, is characterized in that the pore forming material described in step (4) is amino dodecane acetate.
3. quartz sand purifying technique according to claim 1, is characterized in that the mixing acid described in step (5) is: 20% sulfuric acid: 36% hydrochloric acid: 70% nitric acid: hydrofluoric acid=50:25:15:10; The add-on of described mixing acid according to mass ratio is: material C: mixing acid: water=100:25:50.
4. quartz sand purifying technique according to claim 1, it is characterized in that described in step (6) described in microorganism be AN bacterium.
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| CN201310587859.2A CN103663465A (en) | 2013-11-21 | 2013-11-21 | Quartz sand purifying technology |
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| CN201310587859.2A CN103663465A (en) | 2013-11-21 | 2013-11-21 | Quartz sand purifying technology |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964444A (en) * | 2014-05-05 | 2014-08-06 | 临沂晟泉矿业有限公司 | Method for producing high-purity quartz sand |
| CN104556047A (en) * | 2014-12-23 | 2015-04-29 | 江苏泽龙石英有限公司 | Production process for preparing high-purity quartz powder from quartzite |
| CN105000565A (en) * | 2015-07-16 | 2015-10-28 | 安徽东阳矿业科技有限公司 | Compounding-based quartz sand purification technology |
| CN105060299A (en) * | 2015-07-16 | 2015-11-18 | 安徽东阳矿业科技有限公司 | Quartz sand purification technology |
| CN105060302A (en) * | 2015-07-16 | 2015-11-18 | 安徽东阳矿业科技有限公司 | Chemical-biological purification method for quartz sand |
| CN105110609A (en) * | 2015-07-22 | 2015-12-02 | 青岛文创科技有限公司 | Preparation method of quartz tube, quartz plate or quartz rod |
| CN105819668A (en) * | 2016-05-19 | 2016-08-03 | 台玻安徽玻璃有限公司 | Impurity removing method for mirror-manufacturing-level float glass |
| CN107662922A (en) * | 2016-07-30 | 2018-02-06 | 湖北永绍科技股份有限公司 | A kind of method of purification of quartz sand |
| CN109485048A (en) * | 2017-09-15 | 2019-03-19 | 江苏闽江矿业有限公司 | A kind of impurity removal process of quartz sand |
| CN110668453A (en) * | 2019-11-12 | 2020-01-10 | 东海县博汇新材料科技有限公司 | Method for purifying superfine silica powder by using microorganism mixed strain |
| 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 |
| CN113019682A (en) * | 2019-12-24 | 2021-06-25 | 江苏康姆罗拉特种陶瓷有限公司 | Processing and purifying process for high-purity fused quartz sand |
| CN115924919A (en) * | 2022-12-29 | 2023-04-07 | 临沂超技材料科技有限公司 | Purifying equipment and purifying method for ultra-pure quartz sand |
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| CN102173425A (en) * | 2010-12-28 | 2011-09-07 | 汪徐春 | Method for preparing high-purity quartz sand by iron removal based on ammonium salt complexation |
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| CN102173425A (en) * | 2010-12-28 | 2011-09-07 | 汪徐春 | Method for preparing high-purity quartz sand by iron removal based on ammonium salt complexation |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964444B (en) * | 2014-05-05 | 2016-08-24 | 临沂晟泉矿业有限公司 | A kind of production method of glass sand |
| CN103964444A (en) * | 2014-05-05 | 2014-08-06 | 临沂晟泉矿业有限公司 | Method for producing high-purity quartz sand |
| CN104556047A (en) * | 2014-12-23 | 2015-04-29 | 江苏泽龙石英有限公司 | Production process for preparing high-purity quartz powder from quartzite |
| CN105000565A (en) * | 2015-07-16 | 2015-10-28 | 安徽东阳矿业科技有限公司 | Compounding-based quartz sand purification technology |
| CN105060299A (en) * | 2015-07-16 | 2015-11-18 | 安徽东阳矿业科技有限公司 | Quartz sand purification technology |
| CN105060302A (en) * | 2015-07-16 | 2015-11-18 | 安徽东阳矿业科技有限公司 | Chemical-biological purification method for quartz sand |
| CN105110609A (en) * | 2015-07-22 | 2015-12-02 | 青岛文创科技有限公司 | Preparation method of quartz tube, quartz plate or quartz rod |
| CN105819668A (en) * | 2016-05-19 | 2016-08-03 | 台玻安徽玻璃有限公司 | Impurity removing method for mirror-manufacturing-level float glass |
| CN107662922A (en) * | 2016-07-30 | 2018-02-06 | 湖北永绍科技股份有限公司 | A kind of method of purification of quartz sand |
| CN109485048A (en) * | 2017-09-15 | 2019-03-19 | 江苏闽江矿业有限公司 | A kind of impurity removal process of quartz sand |
| CN110668453A (en) * | 2019-11-12 | 2020-01-10 | 东海县博汇新材料科技有限公司 | Method for purifying superfine silica powder by using microorganism mixed strain |
| CN113019682A (en) * | 2019-12-24 | 2021-06-25 | 江苏康姆罗拉特种陶瓷有限公司 | Processing and purifying process for high-purity fused quartz sand |
| 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 |
| CN115924919A (en) * | 2022-12-29 | 2023-04-07 | 临沂超技材料科技有限公司 | Purifying equipment and purifying method for ultra-pure quartz sand |
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Application publication date: 20140326 |