CN103964444A - Method for producing high-purity quartz sand - Google Patents
Method for producing high-purity quartz sand Download PDFInfo
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- CN103964444A CN103964444A CN201410184258.1A CN201410184258A CN103964444A CN 103964444 A CN103964444 A CN 103964444A CN 201410184258 A CN201410184258 A CN 201410184258A CN 103964444 A CN103964444 A CN 103964444A
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Abstract
The invention discloses a method for producing high-purity quartz sand. The method comprises the following steps: magnetic separation, floatation separation, staged de-sliming, acid-leaching washing, drying and finished product obtaining. Through magnetic separation, garnet, hematite, limonite, ilmenite and coenobium particles thereof are removed. Mica and Fe2 in the quartz are removed through floatation separation. Through adding a dispersant for scrubbing, electric repulsion on the surfaces of impurity minerals and quartz particles is increased, and the effect of separating the impurity minerals from the quartz particles is enhanced. In particular, through double acid leaching and double washing, film iron on the surfaces of silica sand particles and iron minerals or iron-containing minerals accompanying in the quartz sand are separated through the function of acid in dissolving iron and other harmful elements. The high-purity quartz sand is produced through the strict technical steps.
Description
Technical field
The invention belongs to the deep process technology of quartz sand, relate in particular to a kind of production method of glass sand.
Background technology
Quartz sand claims again silica sand, is a kind of common nonmetalliferous ore raw material, and its Application Areas is very extensive.Quartz sand ore dressing purification and the deep processing development of China utilize more lately, and are mainly used in building industry, glass manufacture, ceramic industry and foundary industry, and a common ground in these fields is exactly that quartz sand demand is large, raw materials quality requires low.For the high grade quartz sand in some places of production of China, substantially purify or slightly through purifying, can meet industrial sand demand without ore dressing.
At present, the most advanced with the quartz sand ore dressing purification techniques of the U.S. abroad, feature is that industrialization output is large, equipment specialization and production automation degree high, its product developed into for the 6th generation (impurity total mass mark is less than 8 × 10-6, and transparency is optical grade).The high-tech areas such as aerospace, atomic energy technology, laser, fiber optic communications, military project are widely used in through the ore dressing high-purity and ultra-pure quartz sand made of purifying.Along with scientific and technical progress, high-tech also will roll up by the demand of silicon, and the increasingly exhausted of mineral crystal resource makes people have to sight to turn on substitute-high-purity and ultra-pure quartz sand of mineral crystal.Therefore, actively seek and promote the progress of quartz sand ore dressing purification techniques, the suitability for industrialized production low-costly and in high volume that realizes purity quartzite, high-purity and ultra-pure quartz sand, to making up the deficiency of mineral crystal resource, meets high-tech silicon demand and has important practical significance.Two sections of patent documentations through retrieval discovery with Topic relative of the present invention, but all there is complex process in the production method in these patent documentations, the problem that production cost is high, if publication number is wherein the high purity quartz sand manufacturing method of CN 102887516 A, although the quartz sand purity of producing is high, but a word used in place name firing technique of twice, has relatively high expectations to Technology, and general enterprises is difficult to accomplish.
Summary of the invention
The object of this invention is to provide a kind of production method of glass sand, by quartz sand precision work, quartz sand product total impurities is controlled in 10ppm, purity reaches more than 99.99%.
The object of the invention is to be achieved through the following technical solutions, a kind of production method of glass sand, its processing step is:
1, magnetic separation: be 80-100 object quartz sand particles by smashing fineness, adopt dry-type magnetic extractor to carry out primary election, mainly remove garnet, rhombohedral iron ore, limonite, ilmenite and intergrowth particle thereof, suitable magneticstrength should be 10000Oe.
2, flotation: use H
2sO
4adjust agent, pH=2.5～3, petroleum sodium sulfonate is made collecting agent. and orange alcohol oil is made pore forming material, is mainly mica and the Fe removing in quartz
2.
3, classification, desliming: the present invention adopts the method that adds dispersion agent effective powerful to clean, to improve scrub effect.The object that adds dispersion agent is the electric repulsion that increases impure mineral and quartz particles surface, strengthen the mutual separating effect of impure mineral and quartz particles, adopt vinylbenzene-vinylformic acid as dispersion agent, when dispersant dosage is 400-500g/t, the scouring time is while being 15-25 minutes, its best results.Employing adds dispersion agent effective powerful and cleans technical process, by obtain-0.6+0.1mm of graded desliming, the Fe in product
20
3drop to below 0.1% Sio from 0.25% of raw ore
2content is also greater than 99%, has obtained good scouring refining effect, and washed ore productive rate is also up to more than 73%.
4, acid leaching, washing: the hot acid agitation leach method that adopts two acidleach two to wash, remove the film iron and iron mineral or the iron-bearing mineral etc. of association in quartz sand that separate silica sand particle surface.Acidleach flow process is: and mixing acid I soaks-washs-and mixing acid II soaks-washs;
5, dry: after two acidleach two washings, dry l5～20rain at 100-120 DEG C, just glass sand finally.After tested, Sio2 content reaches 99.99%, Fe content and is≤2.35ppm.
Describedly in step 4 acid leaching, washing, adopt the hot acid agitation leach method that two acidleach two are washed to be:
1. the proportioning of mixing acid I is HCI:H
2sO
4=0.5:1, acidleach concentration is: quartz: mixing acid: water=100:35:40; Acidleach temperature is 38-42 DEG C, and leaching time is 6-10 hour; Washing after acidleach I, all adopts tap water (washing 3 times).2. mixing acid II is HC1, H
2sO
4, HN0
3, HF, HF concentration is 8-10%, acidleach concentration is: quartz: mixing acid: water: 100:60:50; Acidleach temperature is 45～50 DEG C, and leaching time is 4-6 hour; First washing after acidleach II, also wash with tap water. in the time that washings approaches neutrality, then use deionized water wash 3 times.
The invention has the beneficial effects as follows:
By magnetic separation, remove garnet, rhombohedral iron ore, limonite, ilmenite and intergrowth particle thereof; Remove mica and the Fe in quartz by flotation
2; By adding dispersion agent to clean, increase the electric repulsion on impure mineral and quartz particles surface, strengthen the mutual separating effect of impure mineral and quartz particles; Particularly wash through two acidleach two, with acid, the solvency action of iron and other harmful element is separated film iron and iron mineral or the iron-bearing mineral of association in quartz sand of silica sand particle surface.In a word, through above-mentioned strict processing step, produce highly purified quartz sand.Whole production technique is reasonable, and production cost is low.
Embodiment
Embodiment: a kind of production method of glass sand, its processing step is: magnetic separation, flotation, graded desliming, acid leaching, washing, dry, finished product.
1, magnetic separation: be 80-100 object quartz sand particles by smashing fineness, the dry-type magnetic extractor that adopts magneticstrength to should be 10000Oe carries out primary election.
2, flotation: use H
2sO
4adjust agent, pH=2.5～3, petroleum sodium sulfonate is made collecting agent. and orange alcohol oil is made pore forming material.
3, classification, desliming: the method that the present invention adopts dosing effective powerful to clean, to improve scrub effect.The object that adds dispersion agent is the electric repulsion that increases impure mineral and quartz particles surface, strengthen the mutual separating effect of impure mineral and quartz particles, adopt vinylbenzene-vinylformic acid as dispersion agent, when dispersant dosage is 450g/t, the scouring time is while being 20 minutes, its best results.Adopt dosing effective powerful to clean technical process, by obtain-0.6+0.1mm of graded desliming, the Fe in product
20
3drop to below 0.1% Sio from 0.25% of raw ore
2content is also greater than 99%, has obtained good scouring refining effect, and washed ore productive rate is also up to more than 73%.
4, acid leaching, washing: the hot acid agitation leach method that adopts two acidleach two to wash, remove the film iron and iron mineral or the iron-bearing mineral etc. of association in quartz sand that separate silica sand particle surface.Acidleach flow process is: and mixing acid I soaks-washs-and mixing acid II soaks-washs:
1. the proportioning of mixing acid I is HCI:H
2sO
4=0.5:1, acidleach concentration is: quartz: mixing acid: water=100:35:40; Acidleach temperature is 38-42 DEG C, and leaching time is 8 hours.Washing after acidleach I. all adopt tap water (washing 3 times).2. mixing acid II is HC1, H
2sO
4, HN0
3, HF, HF concentration can not be greater than 10%, acidleach concentration is: quartz: mixing acid: water: 100:60:50; Acidleach temperature is 45～50 DEG C, and leaching time is 5 hours; First washing after acidleach II, also wash with tap water. in the time that washings approaches neutrality, then use deionized water wash 3 times.
5, dry: after two acidleach two washings, dry l5～20rain at 110 DEG C, just glass sand finally.After tested, Sio2 content reaches 99.99%, Fe content and is≤2.35ppm.
Claims (2)
1. a production method for glass sand, is characterized in that comprising following processing step:
(1) magnetic separation: be 80-100 object quartz sand particles by smashing fineness, adopt dry-type magnetic extractor to carry out primary election, suitable magneticstrength should be 10000Oe;
(2) flotation: use H
2sO
4adjust agent, pH=2.5～3, petroleum sodium sulfonate is made collecting agent, and orange alcohol oil is made pore forming material;
(3) classification, desliming: adopt the method that adds dispersion agent effective powerful to clean, adopt vinylbenzene-vinylformic acid as dispersion agent, when dispersant dosage is 400-500g/t, the scouring time is while being 15-25 minutes;
(4) acid leaching, washing: adopt the two acidleach two hot acid agitation leach method of washing, remove the film iron and iron mineral or the iron-bearing mineral etc. of association in quartz sand that separate silica sand particle surface, acidleach flow process is: mixing acid I soaks-washs-and mixing acid II soaks-washs;
(5) dry: after two acidleach two washings, dry l5～20rain at 100-120 DEG C, just glass sand finally, after tested, Sio2 content reaches 99.99%, Fe content and is≤2.35ppm.
2. the production method of a kind of glass sand as claimed in claim 1, the hot acid agitation leach method that two acidleach two that it is characterized in that adopting in step (4) acid leaching, washing are washed is:
1. the proportioning of mixing acid I is HCI:H
2sO
4=0.5:1, acidleach concentration is: quartz: mixing acid: water=100:35:40; Acidleach temperature is 38-42 DEG C, and leaching time is 6-10 hour; Washing after acidleach I, all adopts tap water (washing 3 times);
2. mixing acid II is HC1, H
2sO
4, HN0
3, HF, HF concentration is 8-10%, acidleach concentration is: quartz: mixing acid: water: 100:60:50; Acidleach temperature is 45～50 DEG C, and leaching time is 4-6 hour; Washing after acidleach II, also, first with tap water washing, in the time that washings approaches neutrality, then uses deionized water wash 3 times.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105327785A (en) * | 2015-11-16 | 2016-02-17 | 合肥万泉非金属矿科技有限公司 | Flotation technology of PPM level low-iron high-purity quartz sand |
| US20170194631A1 (en) * | 2014-06-20 | 2017-07-06 | The Regents Of The University Of California | Porous silicon electrode and method |
| CN107128936A (en) * | 2017-06-26 | 2017-09-05 | 安徽安顺硅基玻璃原料有限公司 | A kind of quartz sand purifying technique |
| CN107188185A (en) * | 2017-07-07 | 2017-09-22 | 临沂昊泉硅业科技有限公司 | A kind of utilization quartz sand tailings purifies the production method of high crystobalite sand |
| CN109046747A (en) * | 2018-08-10 | 2018-12-21 | 江苏凯达石英股份有限公司 | The technique that composite algorithm prepares glass sand |
| CN109225603A (en) * | 2018-08-10 | 2019-01-18 | 江苏凯达石英股份有限公司 | High-purity low-iron quartz sand purifying technique |
| CN109530055A (en) * | 2018-09-30 | 2019-03-29 | 福建省吉康新型建材有限公司 | A kind of method of purity quartzite |
| CN110665631A (en) * | 2019-09-11 | 2020-01-10 | 江苏凯达石英股份有限公司 | Preparation method of high-purity quartz sand |
| CN113546748A (en) * | 2021-07-19 | 2021-10-26 | 宁化日昌升新材料有限公司 | Machine-made sand flotation and magnetic separation combined mica removing process |
| CN113603102A (en) * | 2021-07-27 | 2021-11-05 | 深圳市考拉生态科技有限公司 | Quartz sand alkali leaching purification process |
| CN114392836A (en) * | 2021-12-16 | 2022-04-26 | 江苏中腾石英材料科技股份有限公司 | Processing technology of high-purity quartz sand |
| CN116037295A (en) * | 2023-02-14 | 2023-05-02 | 中国电建集团成都勘测设计研究院有限公司 | Method for removing mica in machine-made sand by wet method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170194631A1 (en) * | 2014-06-20 | 2017-07-06 | The Regents Of The University Of California | Porous silicon electrode and method |
| 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 |
| CN105327785A (en) * | 2015-11-16 | 2016-02-17 | 合肥万泉非金属矿科技有限公司 | Flotation technology of PPM level low-iron high-purity quartz sand |
| CN107128936A (en) * | 2017-06-26 | 2017-09-05 | 安徽安顺硅基玻璃原料有限公司 | A kind of quartz sand purifying technique |
| CN107188185A (en) * | 2017-07-07 | 2017-09-22 | 临沂昊泉硅业科技有限公司 | A kind of utilization quartz sand tailings purifies the production method of high crystobalite sand |
| CN109225603A (en) * | 2018-08-10 | 2019-01-18 | 江苏凯达石英股份有限公司 | High-purity low-iron quartz sand purifying technique |
| CN109046747A (en) * | 2018-08-10 | 2018-12-21 | 江苏凯达石英股份有限公司 | The technique that composite algorithm prepares glass sand |
| CN109530055A (en) * | 2018-09-30 | 2019-03-29 | 福建省吉康新型建材有限公司 | A kind of method of purity quartzite |
| CN109530055B (en) * | 2018-09-30 | 2021-03-05 | 福建省吉康新型建材有限公司 | Method for refining quartz sand |
| CN110665631A (en) * | 2019-09-11 | 2020-01-10 | 江苏凯达石英股份有限公司 | Preparation method of high-purity quartz sand |
| CN113546748A (en) * | 2021-07-19 | 2021-10-26 | 宁化日昌升新材料有限公司 | Machine-made sand flotation and magnetic separation combined mica removing process |
| CN113603102A (en) * | 2021-07-27 | 2021-11-05 | 深圳市考拉生态科技有限公司 | Quartz sand alkali leaching purification process |
| CN114392836A (en) * | 2021-12-16 | 2022-04-26 | 江苏中腾石英材料科技股份有限公司 | Processing technology of high-purity quartz sand |
| CN116037295A (en) * | 2023-02-14 | 2023-05-02 | 中国电建集团成都勘测设计研究院有限公司 | Method for removing mica in machine-made sand by wet method |
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Effective date of registration: 20160615 Address after: 276306, Linyi County, Shandong Province, Yinan County town of Green Camel Linyi Sheng Mining Co., Ltd. Applicant after: LINYI SHENGQUAN MINING CO.,LTD. Applicant after: LINYI HAOQUAN SILICA SAND TECHNOLOGY CO.,LTD. Address before: 276306, Linyi County, Shandong Province, Yinan County town of Green Camel Linyi Sheng Mining Co., Ltd. Applicant before: LINYI SHENGQUAN MINING CO.,LTD. |
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Effective date of registration: 20220808 Address after: Linyi Shengquan Mining Co., Ltd., resident of Qingtuo Town, Yinan County, Linyi City, Shandong Province, 276306 Patentee after: LINYI SHENGQUAN MINING CO.,LTD. Address before: Linyi Shengquan Mining Co., Ltd., resident of Qingtuo Town, Yinan County, Linyi City, Shandong Province, 276306 Patentee before: LINYI SHENGQUAN MINING CO.,LTD. Patentee before: LINYI HAOQUAN SILICA SAND TECHNOLOGY CO.,LTD. |