CN102674376A - Production method of quartz tailing purification - Google Patents
Production method of quartz tailing purification Download PDFInfo
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- CN102674376A CN102674376A CN201210115767XA CN201210115767A CN102674376A CN 102674376 A CN102674376 A CN 102674376A CN 201210115767X A CN201210115767X A CN 201210115767XA CN 201210115767 A CN201210115767 A CN 201210115767A CN 102674376 A CN102674376 A CN 102674376A
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- quartz
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- tail sand
- tailings
- quartz tail
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Abstract
The invention relates to the technical field of nonmetallic ore processing, in particular to a production method of quartz tailing purification. The production method is characterized by comprising the following process steps: washing and deslagging, alkaline-washing, acid-washing and drying. The production method has the beneficial effects that quartz tailings are changed from wastes into valuables, the purity, the color, the whiteness and other problems of the quartz tailings are basically solved, and the production method can be widely applied to silicon micro-powder, high-grade ceramic aggregates, ceramic fabrics, ceramic glazes, water glass, high-grade glass fiber, electrician electrical fillers, artificial quartz stone plate, precision castings and the like.
Description
(1) technical field: the present invention relates to the processing technique field of nonmetalliferous ore, the working method that especially a kind of quartz tail sand is purified.
The (2) background technology: silica sand is a kind of ceramic; It is widely used in industries such as glass, pottery, refractory materials, casting, chemical industry, electronics, electrical equipment, tap water filter and inorganic silicate; Its production technique is after arriving a certain size bulk to the former mining crusher in crushing of quartzite (rock), to process the interval particle of certain particle size with system sand machine or ore mill again.The technology of its production mainly contains two kinds: a kind of is dry method, and a kind of is wet method.During dry production
,Cause dust pollution easily, the direct labor suffers from silicosis easily, and national strictness limits this method and produces; Wet method is present general working method, and it is to be added to ore particles after the fragmentation and water together in the grinding machine, grinds with irony or stone matter grinding machine.Levigated material and water form slip together, flow out grinding machine.Then, carrying out classification with water sieve or hydraulic grading device again, collect the material of needed grain size intervals, promptly is qualified silica sand, and undesirable big size particles is returned grinding machine and regrinded or use it for anything else in this process.The PM for particulate matter that requires less than certain grain size promptly is usually that our alleged tailings flows into the settling tank deposition.Because this tailings is that warp is pulverized formed particle diameter smaller particles in the course of processing, its surface energy and specific surface area are big than finished sand, and adsorptive power is also strong, and the settling time in water is long.Therefore, the adsorbed impurity of this tailings is also more, and Here it is our common tailings of seeing is than the reason of the color (whiteness) dark (low) of finished sand.Based on knowhow: one ton of quartz sand finished product of every production, need the quartzy raw ore about the 1.2-1.4 ton, produce about 0.2 ton tailings.The enterprise of scale in each silica sand production; The quartz tail sand that thousands of tons even hundreds of thousands of ton are arranged every year, if tailings is not recycled, enterprise not only needs certain place to stack; Pollute to environment, but also directly influence the whole enterprise economic benefit.At present; The domestic several of having only enterprise adopts flotation process to purify and utilizes this tailings; And flotation process can only be removed a certain amount of mechanical irony; But other adsorbed impurity of clean tailings particle surface fully also can't fundamentally solve the problems such as purity, color and whiteness of tailings, and its use range receives very big restriction.Now, most of silica sand manufacturing enterprise does not all carry out deep processing to tailings and is used, but as waste material and refuse treatment, is because up to the present, and the appropriate technology of purity and whiteness does not also improve in China about the silica sand tailings.
The (3) summary of the invention: the object of the invention is exactly in order to solve in the existing silica sand production process tailings to be done the pollution that waste disposal causes and adopted flotation process to handle problems such as the quality product that tailings obtains is not high, the scope of application is restricted and the working method that provides a kind of quartz tail sand to purify.
Design philosophy of the present invention is: 1. (its composition is SiO to utilize quartz
2) the tailings grain diameter less easily and alkali lye (aqueous solution like sodium hydroxide or yellow soda ash or Pottasium Hydroxide or salt of wormwood all can; Sodium hydroxide lye with chlor-alkali plant is most economical) under the situation of heating, reaction generates the water-soluble characteristic of water glass (potassium) and cleans its epidermis; Water glass (potassium) the solution recovery set that generates is used.2. utilize mineral acid (hydrochloric acid, sulfuric acid, nitric acid etc. all can, the be optimum) liquid of heat to remove the alkali matter and the iron mineral impurity of surface adsorption in the shakeout particle, thereby reach the purpose of purification with sulfuric acid.3. the acid-bearing wastewater in the water washing process neutralizes with milk of lime, and neutralization is after the clear water recycling of post precipitation.Its reaction formula is:
The reaction formula of alkaline cleaning procedure is:
2SiO
2 + 4 NaOH = 2Na
20.2SiO
2 + 2H
2O
2SiO
2 + 2Na
2CO
3 = 2Na
20.2SiO
2 + 2CO
2
2SiO
2 + 4 KOH = 2K
20.2SiO
2 + 2H
2O
2SiO
2 + 2K
2CO
3 = 2K
20.2SiO
2 + 2CO
2
The reaction formula of acid cleaning process is:
2Na
20.2SiO
2 + 2H
2SO
4 = 2Na
2SO
4 + 2SiO
2
2K
20.2SiO
2 + 2H
2SO
4 = 2K
2SO
4 + 2SiO
2
Fe + H
2SO
4 = FeSO
4 + H
2
Washing back acid-bearing wastewater neutral reaction formula is:
Ca (OH)
2+ H
2SO
4=CaSO
4(deposition)+H
2O
For realizing the purpose of foregoing invention, the present invention realizes through following steps: 1. washing is removed slag: with clear water washing, desliming, subsequent use after gravity treatment, magnetic separation, dehydration again quartz tail sand; 2. alkali cleaning: band stir and the alkaline bath of heating in tailings after adding above-mentioned cleaning earlier; The alkali lye that adds 5%-30% concentration again, control pulp density (solid-to-liquid ratio) at 30-60%, the 100-160 degree (℃) temperature under stirring reaction 2-8 hour; And then cooling; Filter the alkali lye recovery set with (promptly recycling), with a small amount of clear water washing material, it is subsequent use to dewater again; 3. pickling: the tailings in the acid-resistant reactor of band stirring and heating after the alkali cleaning of adding dehydration earlier; The sulfuric acid or hydrochloric acid or the nitric acid that add 10-20% concentration again; And the concentration of control slip (solid-to-liquid ratio) is at 30-60%, again the 80-100 degree (℃) temperature under after stirring reaction 2-8 hour, the cooling slip; Filter acid solution recovery set usefulness, it is qualified to be to PH=6-7 with the clear water washing material; 4. dry: send into the material after the dehydration in above-mentioned 3 in the drying machine, the 120-500 degree (℃) temperature under drying, cooled material promptly is the high quality quartz tail sand.
In order to improve purity, a magnetic separation of last increase in process step ⑶ among the present invention.
In order to guarantee alkali cleaning effect and reduce cost that the alkali lye that in process step ⑵, uses among the present invention is the aqueous solution of selecting sodium hydroxide or Pottasium Hydroxide for use, it also is feasible using other alkali lye certainly.
Also quartz tail sand being handled waste water later among the present invention and carry out processing and utilizing, specifically is with acid-bearing wastewater, flows into neutralization tank; With the milk of lime PH=7 that neutralizes; Carry out precipitation process then, the clear water of post precipitation reuses, and the calcium sulfate of post precipitation can be used as cement additive.
Production technique of the present invention is simple, and cost is low, and the quartz sand powder quality of production is good, through detecting: SiO
2: 99%-99.8%, Fe
2O
3: 0.003%-0.018%, whiteness: 80-93.Can be widely used in silicon powder, high-grade ceramic aggregate, ceramic lining, ceramic glaze, water glass, high-grade glass fiber, the electric filler of electrician, synthetic quartz stone slab, precision casting etc.; The present invention is scientific and reasonable has made good use of the quartz tail sand resource; Quartz tail sand is turned waste into wealth; And effectively avoided the tailings contaminate environment, have remarkable economic efficiency and social benefit.
The (4) embodiment:
Below in conjunction with concrete embodiment, further detailed description the present invention.Should be understood that these embodiment just in order to demonstrate the invention, but not limit scope of the present invention by any way.
Embodiment 1: the present invention is that the tailings after processing with spirit legendary small dragon with horns mountain range, Qichun County, Hubei Province quartz is a raw material, produces the high quality quartz sand powder, and processing process is following:
(1) flush away slag: slurry, deliver in the header tank, it is carried out countercurrent washing with sand pump with khaki quartz tail sand furnishing 20-50% concentration; After sloughing yellow mud; Stop washing, put the material after washing and select in the machine (like spiral chute), separate the irony material after; Carry out a magnetic separation (employing magnetic separator) again, subsequent use behind the material dewatering after the magnetic separation;
⑵ alkali cleaning: put into above-mentioned material in the alkaline bath of band stirring and heating unit, the alkali lye (can adopt wet chemical is alkali lye) that adds 5% concentration is made into slip, and pulp density (solid-to-liquid ratio) is controlled between 30%; Open to stir and heating unit, its temperature be controlled at about 100 degree, and under this temperature insulation reaction 8 hours; Stop heating, reduce to room temperature, deviate from alkali lye again and return and apply mechanically to material; Behind the less water washing material, it is subsequent use to remove moisture again;
⑶ pickling: put into the acid-resistant reactor that band stirs and heats to the material after the above-mentioned alkali cleaning dehydration; The sulfuric acid that adds 10% concentration again, control pulp density (solid-to-liquid ratio) about 30%, stirring reaction after 8 hours under the temperature of 80 degree again; The cooling slip is deviate from the acid solution recovery set and is used.It is qualified to be to PH=6-7 with the clear water washing material, with the magnetic separation once more of the material after the water washing;
⑷ dry: send into the material after the dehydration magnetic separation in above-mentioned 3 in the drying machine, dry under the temperature of 120 degree, cooled material promptly is that finished product is the high quality quartz sand powder, through detection: SiO
2: 99.5%, Fe
2O
3: 0.008%, whiteness: 82;
⑸ the vitriolated waste water in the water washing process flows into neutralization tank, with the milk of lime PH=7 that neutralizes, carries out precipitation process then, and the clear water of post precipitation reuses.
Embodiment 2: the present invention is that the tailings after processing with the quartz mine in Xin County, Xinyang, Henan is a raw material, produces the high quality quartz sand powder, and processing process is following:
1. washing is removed slag: the slurry with lurid quartz tail sand furnishing 20% concentration, deliver in the header tank with sand pump, it is carried out countercurrent washing; After sloughing yellow mud; Stop to wash, put into gravity concentrator to this material, separate the irony material after; Carry out a magnetic separation again, subsequent use behind the material dewatering after the magnetic separation;
2. alkali cleaning: put into above-mentioned material in band stirring and the heating unit alkaline bath, add the alkali lye (can adopt aqueous sodium hydroxide solution) of 10% concentration, make its pulp density (solid-to-liquid ratio) between 40%; Open to stir and heating, its temperature be controlled at about 120 degree, and under this temperature insulation reaction 6 hours; Stop heating, reduce to room temperature, adopt centrifuging to deviate from the alkali lye recovery set again and use to material; Behind the less water washing material, it is subsequent use to remove moisture again;
3. pickling: put into the acid-resistant reactor that band stirs and heats to the material after the above-mentioned alkali cleaning dehydration; The hydrochloric acid that adds 15% concentration again, control pulp density (solid-to-liquid ratio) about 40%, stirring reaction after 6 hours under the temperature of 90 degree again; The cooling slip is deviate from the acid solution recovery set and is used.It is qualified to be to PH=6-7 with the clear water washing material, send magnetic separator magnetic separation once more with the material after the water washing;
4. dry: send into the material after the dehydration magnetic separation in above-mentioned 3 in the drying machine, dry under the temperature of 200 degree, cooled material promptly is a finished product, through detection: SiO
2: 99.6%, Fe
2O
3: 0.003%, whiteness: 93;
5. the vitriolated waste water in the water washing process flows into neutralization tank, with the milk of lime PH=7 that neutralizes, carries out precipitation process then, and the clear water of post precipitation reuses.
Embodiment 3: the present invention is that the tailings after processing with Qinhuangdao, Henan Province quartz mine is a raw material, produces the high quality quartz sand powder, and processing process is following:
1. washing is removed slag: the slurry of quartz tail sand furnishing 40% concentration of band deep yellow, deliver in the header tank with sand pump, it is carried out countercurrent washing; After sloughing yellow mud; Stop to wash, put into gravity concentrator to this material, separate the irony material after; Carry out a magnetic separation again, subsequent use behind the material dewatering after the magnetic separation;
2. alkali cleaning: put into above-mentioned material in band stirring and the heating unit alkaline bath, add the alkali lye (can adopt potassium hydroxide aqueous solution is alkali lye) of 20% concentration, make its solid-to-liquid ratio between 50%; Open to stir and heating, its temperature be controlled at about 150 degree, and under this temperature insulation reaction 4 hours; Stop heating, reduce to room temperature, deviate from the alkali lye recovery set again and use to material; Behind the less water washing material, it is subsequent use to remove moisture again;
3. pickling: put into the acid-resistant reactor that band stirs and heats to the material after the above-mentioned alkali cleaning dehydration; The nitric acid that adds 18% concentration again, control pulp density (solid-to-liquid ratio) about 50%, stirring reaction after 2 hours under the temperature of 100 degree again; The cooling slip filters the acid solution recovery set and uses.It is qualified to be to PH=6-7 with the clear water washing material;
4. dry: send into the material after the dehydration in above-mentioned 3 in the drying machine, drying under the temperature of 300 degree, cooled material promptly is a finished product.Through detecting: SiO
2: 99%, Fe
2O
3: 0.018%, whiteness: 85;
5. the vitriolated waste water in the water washing process flows into neutralization tank, with the milk of lime PH=7 that neutralizes, carries out precipitation process then, and the clear water of post precipitation reuses.
Embodiment 4: the present invention is that the tailings after processing with the quartz mine of Taihu County, Anqing, Anhui Province is a raw material, produces the high quality quartz sand powder, and processing process is following:
1. washing is removed slag: the slurry with lurid quartz tail sand furnishing 30% concentration, deliver in the header tank with sand pump, it is carried out countercurrent washing; After sloughing yellow mud; Stop to wash, put into gravity concentrator to this material, separate the irony material after; Carry out a magnetic separation again, subsequent use behind the material dewatering after the magnetic separation;
2. alkali cleaning: put into above-mentioned material in band stirring and the heating unit alkaline bath, add the alkali lye (can adopt aqueous sodium carbonate is alkali lye) of 30% concentration, make its pulp density (solid-to-liquid ratio) between 60%; Open to stir and heating, its temperature be controlled at about 160 degree, and under this temperature insulation reaction 2 hours; Stop heating, reduce to room temperature, deviate from the alkali lye recovery set again and use to material; Behind the less water washing material, it is subsequent use to adopt vacuum filtration to remove moisture again;
3. pickling: put into the acid-resistant reactor that band stirs and heats to the material after the above-mentioned alkali cleaning dehydration; The sulfuric acid or hydrochloric acid or the nitric acid that add 20% concentration again; Control pulp density (solid-to-liquid ratio) is about 60%; Stirring reaction is after 4 hours under the temperature of 100 degree again, and the cooling slip filters the acid solution recovery set and uses.It is qualified to be to PH=6-7 with the clear water washing material, with the magnetic separation once more of the material after the water washing;
4. dry: send into the material after the dehydration magnetic separation in above-mentioned 3 in the drying machine, drying under the temperature of 400 degree, cooled material promptly is a finished product.Through detecting: SiO
2: 99.8%, Fe
2O
3: 0.003%, whiteness: 93;
5. the vitriolated waste water in the water washing process flows into neutralization tank, with the milk of lime PH=7 that neutralizes, carries out precipitation process then, and the clear water of post precipitation reuses.
Claims (4)
1. the quartz tail sand working method of purifying is characterized in that: comprise that following process step: ⑴ washing removes slag: with clear water washing, desliming, subsequent use after gravity treatment, magnetic separation, dehydration again quartz tail sand; ⑵ alkali cleaning: band stir and the alkaline bath of heating in tailings after adding above-mentioned cleaning earlier; The alkali lye that adds 5%-30% concentration again, control pulp density is at 30-60%, under the temperature of 100-160 degree stirring reaction 2-8 hour; And then cooling; Filter alkali lye recovery set usefulness, with a small amount of clear water washing material, it is subsequent use to dewater again; ⑶ pickling: the tailings in the acid-resistant reactor of band stirring and heating after the alkali cleaning of adding dehydration earlier; The sulfuric acid or hydrochloric acid or the nitric acid that add 10-20% concentration again; And the concentration of control slip after stirring reaction 2-8 under the temperature of 80-100 degree hour, is cooled off slip again at 30-60%; Filter acid solution recovery set usefulness, it is qualified to be to PH=6-7 with the clear water washing material; ⑷ dry: send into the material after the dehydration in the above-mentioned steps 3 in the drying machine, dry under the temperature of 120-500 degree, cooled material promptly is the high quality quartz tail sand.
2. the working method that a kind of quartz tail sand according to claim 1 is purified; It is characterized in that: quartz tail sand being handled waste water later carry out processing and utilizing, specifically is with acid-bearing wastewater, flows into neutralization tank; With the milk of lime PH=7 that neutralizes; Carry out precipitation process then, the clear water of post precipitation reuses, and the calcium sulfate of post precipitation can be used as cement additive.
3. the working method that a kind of quartz tail sand according to claim 1 is purified is characterized in that: a magnetic separation of last increase in process step ⑶.
4. the working method that a kind of quartz tail sand according to claim 1 is purified, it is characterized in that: the alkali lye that in process step ⑵, uses is the aqueous solution of selecting sodium hydroxide or yellow soda ash or Pottasium Hydroxide or salt of wormwood for use.
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|---|---|---|---|---|
| CN103101919A (en) * | 2013-02-27 | 2013-05-15 | 东华大学 | Method for preparing ultrafine crystalline silica by using quartz tailings |
| CN103372496A (en) * | 2013-06-21 | 2013-10-30 | 田辉明 | Process method for separating quartz sand, arkosic sand and iron powder from river yellow sand |
| CN103979546A (en) * | 2014-05-05 | 2014-08-13 | 临沂晟泉矿业有限公司 | Method for producing purified high-whiteness quartz sand and silica micropowder from quartz sand tailings |
| CN104986774A (en) * | 2015-07-13 | 2015-10-21 | 田辉明 | Process and device for producing quartz sand powder for TFT-LCD (thin film transistor-liquid crystal display) base plate glass by utilizing quartz tail sand |
| CN106629743A (en) * | 2016-11-21 | 2017-05-10 | 四川南联环资科技股份有限公司 | Method for producing quartz sand for ceramic glaze by using quartz tailing |
| CN106810113A (en) * | 2015-12-01 | 2017-06-09 | 衡阳双雁运输机械有限公司 | Reinforced quartzite slate |
| CN107188190A (en) * | 2017-07-07 | 2017-09-22 | 临沂昊泉硅业科技有限公司 | A kind of method that utilization quartz sand tailings produces silicon powder |
| CN107698802A (en) * | 2017-11-09 | 2018-02-16 | 新沂市宏润石英硅微粉有限公司 | A kind of preparation method of high purity silicon micro mist |
| CN107792859A (en) * | 2017-11-09 | 2018-03-13 | 新沂市宏润石英硅微粉有限公司 | A kind of recovery method of environmentally friendly silicon powder |
| CN108165081A (en) * | 2017-12-27 | 2018-06-15 | 温州市艺都装潢有限公司 | Epoxide resin polymer clay and preparation method thereof |
| CN108620228A (en) * | 2018-04-28 | 2018-10-09 | 四川南联环资科技股份有限公司 | A kind of technique of quartz sand tailings processing and recycling |
| CN108855582A (en) * | 2018-06-05 | 2018-11-23 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of production method of artificial quartz stone plate sand |
| CN110002455A (en) * | 2019-03-26 | 2019-07-12 | 黄冈师范学院 | A method of removing blue illite particulate matter from blue mouth quartz sand particle |
| CN110976077A (en) * | 2019-12-25 | 2020-04-10 | 中建材蚌埠玻璃工业设计研究院有限公司 | Method for preparing high-purity quartz sand iron concentrate from magnetite associated granular quartz |
| CN111285379A (en) * | 2020-03-17 | 2020-06-16 | 塔里木大学 | Vermiculite processing clean comprehensive utilization system and method |
| CN111499365A (en) * | 2020-04-22 | 2020-08-07 | 宜宾学院 | Method for whitening weathered sandstone through acid-base combined treatment |
| CN113479894A (en) * | 2021-07-27 | 2021-10-08 | 深圳市考拉生态科技有限公司 | Environment-friendly quartz sand purification process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101919A (en) * | 2013-02-27 | 2013-05-15 | 东华大学 | Method for preparing ultrafine crystalline silica by using quartz tailings |
| CN103372496A (en) * | 2013-06-21 | 2013-10-30 | 田辉明 | Process method for separating quartz sand, arkosic sand and iron powder from river yellow sand |
| CN103979546A (en) * | 2014-05-05 | 2014-08-13 | 临沂晟泉矿业有限公司 | Method for producing purified high-whiteness quartz sand and silica micropowder from quartz sand tailings |
| CN104986774A (en) * | 2015-07-13 | 2015-10-21 | 田辉明 | Process and device for producing quartz sand powder for TFT-LCD (thin film transistor-liquid crystal display) base plate glass by utilizing quartz tail sand |
| CN106810113A (en) * | 2015-12-01 | 2017-06-09 | 衡阳双雁运输机械有限公司 | Reinforced quartzite slate |
| CN106629743B (en) * | 2016-11-21 | 2019-06-07 | 四川南联环资科技股份有限公司 | A method of ceramic glaze quartz sand is produced using quartz tail sand |
| CN106629743A (en) * | 2016-11-21 | 2017-05-10 | 四川南联环资科技股份有限公司 | Method for producing quartz sand for ceramic glaze by using quartz tailing |
| CN107188190A (en) * | 2017-07-07 | 2017-09-22 | 临沂昊泉硅业科技有限公司 | A kind of method that utilization quartz sand tailings produces silicon powder |
| CN107698802A (en) * | 2017-11-09 | 2018-02-16 | 新沂市宏润石英硅微粉有限公司 | A kind of preparation method of high purity silicon micro mist |
| CN107792859A (en) * | 2017-11-09 | 2018-03-13 | 新沂市宏润石英硅微粉有限公司 | A kind of recovery method of environmentally friendly silicon powder |
| CN108165081B (en) * | 2017-12-27 | 2020-04-14 | 温州市艺都装潢有限公司 | Epoxy resin polymer daub and preparation method thereof |
| CN108165081A (en) * | 2017-12-27 | 2018-06-15 | 温州市艺都装潢有限公司 | Epoxide resin polymer clay and preparation method thereof |
| CN108620228A (en) * | 2018-04-28 | 2018-10-09 | 四川南联环资科技股份有限公司 | A kind of technique of quartz sand tailings processing and recycling |
| CN108855582A (en) * | 2018-06-05 | 2018-11-23 | 中建材蚌埠玻璃工业设计研究院有限公司 | A kind of production method of artificial quartz stone plate sand |
| CN110002455A (en) * | 2019-03-26 | 2019-07-12 | 黄冈师范学院 | A method of removing blue illite particulate matter from blue mouth quartz sand particle |
| CN110976077A (en) * | 2019-12-25 | 2020-04-10 | 中建材蚌埠玻璃工业设计研究院有限公司 | Method for preparing high-purity quartz sand iron concentrate from magnetite associated granular quartz |
| CN111285379A (en) * | 2020-03-17 | 2020-06-16 | 塔里木大学 | Vermiculite processing clean comprehensive utilization system and method |
| CN111499365A (en) * | 2020-04-22 | 2020-08-07 | 宜宾学院 | Method for whitening weathered sandstone through acid-base combined treatment |
| CN111499365B (en) * | 2020-04-22 | 2022-05-20 | 宜宾学院 | Method for whitening weathered sandstone through acid-base combined treatment |
| CN113479894A (en) * | 2021-07-27 | 2021-10-08 | 深圳市考拉生态科技有限公司 | Environment-friendly quartz sand purification process |
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