CN105197939A - Acid pickling and waste acid treatment process for improving purity of powdery quartz sand - Google Patents

Acid pickling and waste acid treatment process for improving purity of powdery quartz sand Download PDF

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Publication number
CN105197939A
CN105197939A CN201510626781.XA CN201510626781A CN105197939A CN 105197939 A CN105197939 A CN 105197939A CN 201510626781 A CN201510626781 A CN 201510626781A CN 105197939 A CN105197939 A CN 105197939A
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acid
quartz sand
pickling
calcium
sand powder
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田辉明
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Tian Huiming
Huanggang Normal University
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Abstract

The invention provides an acid pickling and waste acid treatment process for improving purity of powdery quartz sand. The process includes the steps: putting the powdery quartz sand in an acid pickling purification device, and using an acid pump for pumping acid pickling solution into the acid pickling purification device, wherein the acid pickling solution is composed of hydrofluoric acid, fluorosilicic acid, oxalic acid and water or composed of fluorosilicic acid, oxalic acid and water; removing the acid pickling solution after acid pickling, and collecting; delivering the powdery quartz sand to a washing device by clear water after acid pickling, washing to neutral, and dewatering to obtain a finished product of powdery quartz sand; transferring waste acid into a neutralization tank for neutralization, delivering into a sedimentation tank by the pump, and allowing calcium fluosilicate and calcium oxalate to precipitate; delivering the clear water into a regulation tank after precipitation to realize pH adjustment for precipitation of iron ions; using oxalic acid or fluorosilicic acid to adjust pH, precipitating calcium fluosilicate and calcium oxalate again, filtering to obtain clear water, and delivering the clear water to a workshop for recycling. The acid pickling and waste acid treatment process for improving purity of the powdery quartz sand has the advantages of remarkable purity improvement and impurity reduction and simplicity and convenience in subsequent treatment.

Description

A kind of improve quartz sand powder purity pickling and useless acid-treated technique
Technical field
The invention provides a kind of improve quartz sand powder purity pickling and useless acid-treated technique, relate to the formula of pickle solution, after pickling purifying technique and pickling, the treatment process of waste water, belongs to nonmetalliferous ore deep processing and environmental technology field.
Background technology
Quartz sand is one of a kind of important ceramic, and it is widely used in the industries such as glass, pottery, cement, refractory materials; The height of quartz sand grade (purity) and the size of value depend primarily on the number of the metallic impurity mineral content of quartz sand self, especially with impurity iron for the content representing metalliferous mineral is how many, decide self-value and the use value of quartz sand.In order to effectively reduce the content of the irony element in quartz sand, usual people are preparing the way deironing mostly adopting high intensity magnetic separation in quartz sand process, and its effect is not very desirable, is difficult to the requirement reaching expection; For this reason, the general way deironing just adopting chemical pickling in this area, although the way deironing of pickling can reach and exceed the requirement of expection, can produce a large amount of acid-bearing wastewaters in acid cleaning process needs process.This just brings a series of environmental issue.Present people to be used for the acid solution of quartz sand purifying and mostly to adopt strong acid as acid solution and composite acid solutions thereof such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid; What these acid solutions produced wants to accomplish complete recycle containing sour spent acid process (sulfuric acid outer), needs to drop into huge environment friendly system and equipment, and this, for the large enterprise of turnout, is very difficult.
Acid solution composite is in the art as hydrofluoric acid, silicofluoric acid and sulfuric acid; Hydrofluoric acid, silicofluoric acid and nitric acid; Composite acid solutions such as hydrofluoric acid, silicofluoric acid and hydrochloric acid or dioxide-containing silica can be improved, but deironing does not reach requirement; Be that deironing reaches requirement, and the purity of silicon-dioxide can not be improved; Can reach requirement and calcium ion concn after follow-up acid-bearing wastewater process in water exceeds standard and cause the saltiness in the quartz sand after washing too high, the purity of last silicon-dioxide does not still reach the object of expection.
For this reason, the enterprise being engaged in purifying quartz sand in this area urgently wishes to study a kind of acid formula that can either improve quartz sand purity, this acid-bearing wastewater can be processed very well again, acid-bearing wastewater after process all can also be recycled and is not affected the processing method of quality product, and the method also needs to possess: environmental protection facility drops into the technical requirementss such as little, running cost is low, easy to operate, it is also one of brand-new problem of of quartz sand powder purification domain engineering technician.
Summary of the invention
The invention solves the deficiency in background technology, provide a kind of improve quartz sand powder purity pickling and useless acid-treated technique, the present invention can improve the purity of the silicon-dioxide in quartz sand significantly and significant reduce in quartz sand the impure minerals such as aluminium sesquioxide, basic metal, ferric oxide, titanium dioxide, meanwhile, the waste water that subsequent handling of the present invention produces easily processes cleaning.
Realizing the technical scheme that above-mentioned purpose of the present invention adopts is:
A kind of improve quartz sand powder purity pickling and useless acid-treated technique, comprise the following steps: (1), quartz sand powder to be purified is put in pickling purifying plant, pickle solution to be pumped in pickling purifying plant and the negative pressure water absorption system opened in pickling purifying plant with sour pump, described pickle solution is made up of 1 ~ 10% hydrofluoric acid, 5 ~ 20% silicofluoric acid, 3 ~ 20% oxalic acid and 50 ~ 90% water, or is made up of 10 ~ 20% silicofluoric acid, 5 ~ 20% oxalic acid and 60 ~ 85% water;
(2), by heating temperatures to 60 ~ 85 DEG C in pickling purifying plant, and ON cycle system makes the pickle solution of heat circulate dynamic acid-washed quartz sand powder, and pickling removes pickle solution after 3 ~ 6 hours and collects;
(3), deliver in water washing device with clear water by the quartz sand powder after pickling in pickling purifying plant, by quartz sand powder washing to neutrality, dehydration i.e. obtained finished product quartz sand powder;
(4), the pickle solution collected in step (2) is transferred in neutralization tank with after lime slurry neutralization to pH=6 ~ 7, generate calcium silicofluoride and calcium oxalate precipitation, by the pickle solution after neutralization with being pumped in settling tank, in settling tank under calcium silicofluoride and calcium oxalate precipitation, reclaim after the material pressure filter of collecting precipitation is pressed into filter cake and use;
(5), by the clear water after calcium silicofluoride and calcium oxalate precipitation send in equalizing tank again and regulate pH=8.5 ~ 9, with precipitated iron ion, the iron ion material pressure filter after precipitation is pressed into filter cake and reclaims use;
(6), by the clear water after precipitation of iron ions send into equalizing tank again, after regulating pH=6 ~ 7, again precipitate caoxalate with oxalic acid, the calcium ion concn in the clear water obtained after filtering with quartz filter is identical with tap water, can deliver to workshop and recycle.
The dilute sulphuric acid reaction of equivalent with it of described calcium silicofluoride and caoxalate filter cake, the silicofluoric acid of generation and oxalic acid deliver to workshop recycle again, and the calcium sulfate of generation can be made byproduct and sell.
Described iron ion filter cake is sold as the raw material preparing ferrous sulfate.
Because it is a thermopositive reaction that hydrofluoric acid and quartz sand and feldspar react in the present invention, and generation silicon tetrafluoride gas, namely this gas is dissolved in the water of system is silicofluoric acid; And the reaction of silicofluoric acid and quartz sand and feldspar is slow, it can fast decoupled feldspar and molten except quartz sand powder in case of heating; In this system, hydrofluoric acid and quartz sand powder react liberated heat that oxalic acid can be impelled to accelerate complexing are molten except the irony element in quartz sand and feldspar, thus reach can feldspar in fast decoupled quartz sand, reduce again the ferric oxide content in quartz sand fast, thus arrive the object of purifying quartz sand powder purity.
To compare prior art, adopt the composite acid solution of hydrofluoric acid, silicofluoric acid and oxalic acid can improve the purity of the silicon-dioxide in quartz sand significantly and significant reduce in quartz sand the impure minerals such as aluminium sesquioxide, basic metal, ferric oxide, titanium dioxide in the present invention, achieve unexpected effect.But also finding that the composite waste water of other acid solutions of waste water ratio that its subsequent handling produces will easily process and clean a lot, its Economic model is very remarkable.
In addition, the present invention is in the technique processed spent acid, and the calcium sulfate of generation can make byproduct, or is used for producing the products such as Sodium Silicofluoride (potassium) and sodium oxalate (potassium) with produced silicofluoric acid and oxalic acid.The iron ion be settled out can be used as produces ferrous sulfate raw material.Its whole production process does not have waste water, spent acid and waste gas to arrange outward, is the green production process of energy-saving and environmental protection.
Embodiment
Below in conjunction with specific embodiment, detailed specific description is done to the present invention, but protection scope of the present invention is not limited to following examples.
The pickling purifying plant adopted in following examples is the patent No.: the device provided in ZL201110247061.4, the authorized announcement date of this patent: on November 7th, 2012.
Embodiment 1
The step provided in the present embodiment is as follows: (1), put in pickling purifying plant by quartz sand powder to be purified, to be pumped into by pickle solution in pickling purifying plant and the negative pressure water absorption system opened in pickling purifying plant with sour pump, described pickle solution is made up of 10 ~ 20% silicofluoric acid, 5 ~ 20% oxalic acid and 60 ~ 85% water.The quartz sand powder that the quartz sand powder to be purified used in this embodiment produces for Anhui silica sand company, after testing following (massfraction): the SiO of its composition 2: 99.52%, Al 2o 3: 1460ppm, Fe 2o 3: 201ppm, TiO 2: 49.2ppm, Na 20:50.2ppm, K 20:522.8ppm.
(2), by the heating temperatures to 60 DEG C in pickling purifying plant, and ON cycle system makes the pickle solution of heat circulate dynamic acid-washed quartz sand powder, and pickling removes pickle solution after 6 hours and collects.
(3), deliver in water washing device with clear water by the quartz sand powder after pickling in pickling purifying plant, by quartz sand powder washing to neutrality, dehydration i.e. obtained finished product quartz sand powder.Product is after testing: SiO 2: 99.87%, Al 2o 3: 348.6ppm, Fe 2o 3: 23ppm, TiO 2: 14ppm, Na 20:15.6ppm, K 20:65ppm.
(4), the pickle solution collected in step (2) is transferred in neutralization tank with after lime slurry neutralization to pH=6, generate calcium silicofluoride and calcium oxalate precipitation, by the pickle solution after neutralization with being pumped in settling tank, in settling tank under calcium silicofluoride and calcium oxalate precipitation, reclaim after the material pressure filter of collecting precipitation is pressed into filter cake and use;
The dilute sulphuric acid reaction of equivalent with it of described calcium silicofluoride and caoxalate filter cake, the silicofluoric acid of generation and oxalic acid deliver to workshop recycle again, and the calcium sulfate of generation can be made byproduct and sell.
(5), by the clear water after calcium silicofluoride and calcium oxalate precipitation send in equalizing tank again and regulate pH=8.5, with precipitated iron ion, the iron ion material pressure filter after precipitation is pressed into filter cake and reclaims use; The raw material that described iron ion filter cake can be used as preparing ferrous sulfate is sold.
(6), by the clear water after precipitation of iron ions send into equalizing tank again, after regulating pH=6.5, again precipitate caoxalate with oxalic acid, the calcium ion concn in the clear water obtained after filtering with quartz filter is identical with tap water, can deliver to workshop and recycle.
Embodiment 2
The step provided in the present embodiment is as follows: (1), put in pickling purifying plant by quartz sand powder to be purified, to be pumped into by pickle solution in pickling purifying plant and the negative pressure water absorption system opened in pickling purifying plant with sour pump, described pickle solution is made up of 1 ~ 10% hydrofluoric acid, 5 ~ 20% silicofluoric acid, 3 ~ 20% oxalic acid and 50 ~ 90% water.The quartz sand powder that the quartz sand powder to be purified used in this embodiment produces for Anhui silica sand company, after testing following (massfraction): the SiO of its composition 2: 99.52%, Al 2o 3: 1460ppm, Fe 2o 3: 201ppm, TiO 2: 49.2ppm, Na 20:50.2ppm, K 20:522.8ppm.
(2), by the heating temperatures to 80 DEG C in pickling purifying plant, and ON cycle system makes the pickle solution of heat circulate dynamic acid-washed quartz sand powder, and pickling removes pickle solution after 3 hours and collects.
(3), deliver in water washing device with clear water by the quartz sand powder after pickling in pickling purifying plant, by quartz sand powder washing to neutrality, dehydration i.e. obtained finished product quartz sand powder.Product is after testing: SiO 2: 99.91%, Al 2o 3: 196.6ppm, Fe 2o 3:, 14ppm, TiO 2: 9.6ppm, Na 20:7.8ppm, K 20:28ppm.
(4), the pickle solution collected in step (2) is transferred in neutralization tank with after lime slurry neutralization to pH=7, generate calcium silicofluoride and calcium oxalate precipitation, by the pickle solution after neutralization with being pumped in settling tank, in settling tank under calcium silicofluoride and calcium oxalate precipitation, reclaim after the material pressure filter of collecting precipitation is pressed into filter cake and use;
The dilute sulphuric acid reaction of equivalent with it of described calcium silicofluoride and caoxalate filter cake, the silicofluoric acid of generation and oxalic acid deliver to workshop recycle again, and the calcium sulfate of generation can be made byproduct and sell.
(5), by the clear water after calcium silicofluoride and calcium oxalate precipitation send in equalizing tank again and regulate pH=9, with precipitated iron ion, the iron ion material pressure filter after precipitation is pressed into filter cake and reclaims use; The raw material that described iron ion filter cake can be used as preparing ferrous sulfate is sold.
(6), by the clear water after precipitation of iron ions send into equalizing tank again, after regulating pH=7, again precipitate caoxalate with oxalic acid, the calcium ion concn in the clear water obtained after filtering with quartz filter is identical with tap water, can deliver to workshop and recycle.
Embodiment 3
The step provided in the present embodiment is as follows: (1), put in pickling purifying plant by quartz sand powder to be purified, to be pumped into by pickle solution in pickling purifying plant and the negative pressure water absorption system opened in pickling purifying plant with sour pump, described pickle solution is made up of 1 ~ 10% hydrofluoric acid, 5 ~ 20% silicofluoric acid, 3 ~ 20% oxalic acid and 50 ~ 90% water.The quartz sand powder that the quartz sand powder to be purified used in this embodiment produces for Shandong silica sand company, after testing following (massfraction): the SiO of its composition 2: 98.69%, Al 2o 3: 5800ppm, Fe 2o 3: 1510ppm, TiO 2: 230ppm, Na 20:20.5ppm, K 20:1200ppm.
(2), by the heating temperatures to 70 DEG C in pickling purifying plant, and ON cycle system makes the pickle solution of heat circulate dynamic acid-washed quartz sand powder, and pickling removes pickle solution after 3 hours and collects.
(3), deliver in water washing device with clear water by the quartz sand powder after pickling in pickling purifying plant, by quartz sand powder washing to neutrality, dehydration i.e. obtained finished product quartz sand powder.Product is after testing: SiO 2: 99.84%, Al 2o 3: do not detect, Fe 2o 3: 49ppm, TiO 2: 100ppm, Na 20: do not detect, K 20: do not detect.
(4), the pickle solution collected in step (2) is transferred in neutralization tank with after lime slurry neutralization to pH=6.5, generate calcium silicofluoride and calcium oxalate precipitation, by the pickle solution after neutralization with being pumped in settling tank, in settling tank under calcium silicofluoride and calcium oxalate precipitation, reclaim after the material pressure filter of collecting precipitation is pressed into filter cake and use;
The dilute sulphuric acid reaction of equivalent with it of described calcium silicofluoride and caoxalate filter cake, the silicofluoric acid of generation and oxalic acid deliver to workshop recycle again, and the calcium sulfate of generation can be made byproduct and sell.
(5), by the clear water after calcium silicofluoride and calcium oxalate precipitation send in equalizing tank again and regulate pH=8.5, with precipitated iron ion, the iron ion material pressure filter after precipitation is pressed into filter cake and reclaims use; The raw material that described iron ion filter cake can be used as preparing ferrous sulfate is sold.
(6), by the clear water after precipitation of iron ions send into equalizing tank again, after regulating pH=6.4, again precipitate caoxalate with oxalic acid, the calcium ion concn in the clear water obtained after filtering with quartz filter is identical with tap water, can deliver to workshop and recycle.
Embodiment 4
The step provided in the present embodiment is as follows: (1), put in pickling purifying plant by quartz sand powder to be purified, to be pumped into by pickle solution in pickling purifying plant and the negative pressure water absorption system opened in pickling purifying plant with sour pump, described pickle solution is made up of 10 ~ 20% silicofluoric acid, 5 ~ 20% oxalic acid and 60 ~ 85% water.The quartz sand powder that the quartz sand powder to be purified used in this embodiment produces for Shandong silica sand company, after testing following (massfraction): the SiO of its composition 2: 98.76%, Al 2o 3: 6000ppm, Fe 2o 3: 580ppm, TiO 2: 260ppm, Na 20:10ppm, K 20:1300ppm.
(2), by the heating temperatures to 60 DEG C in pickling purifying plant, and ON cycle system makes the pickle solution of heat circulate dynamic acid-washed quartz sand powder, and pickling removes pickle solution after 6 hours and collects.
(3), deliver in water washing device with clear water by the quartz sand powder after pickling in pickling purifying plant, by quartz sand powder washing to neutrality, dehydration i.e. obtained finished product quartz sand powder.Product is after testing: SiO 2: 99.86%, Al 2o 3: do not detect, Fe 2o 3: 76ppm, TiO 2: 180ppm, Na 20: do not detect, K 20: do not detect.
(4), the pickle solution collected in step (2) is transferred in neutralization tank with after lime slurry neutralization to pH=6, generate calcium silicofluoride and calcium oxalate precipitation, by the pickle solution after neutralization with being pumped in settling tank, in settling tank under calcium silicofluoride and calcium oxalate precipitation, reclaim after the material pressure filter of collecting precipitation is pressed into filter cake and use;
The dilute sulphuric acid reaction of equivalent with it of described calcium silicofluoride and caoxalate filter cake, the silicofluoric acid of generation and oxalic acid deliver to workshop recycle again, and the calcium sulfate of generation can be made byproduct and sell.
(5), by the clear water after calcium silicofluoride and calcium oxalate precipitation send in equalizing tank again and regulate pH=8.5, with precipitated iron ion, the iron ion material pressure filter after precipitation is pressed into filter cake and reclaims use; The raw material that described iron ion filter cake can be used as preparing ferrous sulfate is sold.
(6), by the clear water after precipitation of iron ions send into equalizing tank again, after regulating pH=6.5, again precipitate caoxalate with oxalic acid, the calcium ion concn in the clear water obtained after filtering with quartz filter is identical with tap water, can deliver to workshop and recycle.

Claims (3)

1. one kind is improved the pickling of quartz sand powder purity and useless acid-treated technique, it is characterized in that comprising the following steps: (1), quartz sand powder to be purified is put in pickling purifying plant, pickle solution to be pumped in pickling purifying plant and the negative pressure water absorption system opened in pickling purifying plant with sour pump, described pickle solution is made up of 1 ~ 10% hydrofluoric acid, 5 ~ 20% silicofluoric acid, 3 ~ 20% oxalic acid and 50 ~ 90% water, or is made up of 10 ~ 20% silicofluoric acid, 5 ~ 20% oxalic acid and 60 ~ 85% water;
(2), by heating temperatures to 60 ~ 85 DEG C in pickling purifying plant, and ON cycle system makes the pickle solution of heat circulate dynamic acid-washed quartz sand powder, and pickling removes pickle solution after 3 ~ 6 hours and collects;
(3), deliver in water washing device with clear water by the quartz sand powder after pickling in pickling purifying plant, by quartz sand powder washing to neutrality, dehydration i.e. obtained finished product quartz sand powder;
(4), the pickle solution collected in step (2) is transferred in neutralization tank with after lime slurry neutralization to pH=6 ~ 7, generate calcium silicofluoride and calcium oxalate precipitation, by the pickle solution after neutralization with being pumped in settling tank, in settling tank under calcium silicofluoride and calcium oxalate precipitation, reclaim after the material pressure filter of collecting precipitation is pressed into filter cake and use;
(5), by the clear water after calcium silicofluoride and calcium oxalate precipitation send in equalizing tank again and regulate pH=8.5 ~ 9, with precipitated iron ion, the iron ion material pressure filter after precipitation is pressed into filter cake and reclaims use;
(6), by the clear water after precipitation of iron ions send into equalizing tank again, after regulating pH=6 ~ 7 with oxalic acid, precipitation caoxalate, the calcium ion concn in the clear water obtained after filtering with quartz filter is identical with tap water, can deliver to workshop and recycle.
2. the pickling of raising quartz sand powder purity according to claim 1 and useless acid-treated technique, it is characterized in that: the dilute sulphuric acid reaction of equivalent with it of described calcium silicofluoride and caoxalate filter cake, the silicofluoric acid generated and oxalic acid deliver to workshop recycle again, and the calcium sulfate of generation can be made byproduct and sell.
3. the pickling of raising quartz sand powder purity according to claim 1 and useless acid-treated technique, is characterized in that: described iron ion filter cake is sold as the raw material preparing ferrous sulfate.
CN201510626781.XA 2015-09-26 2015-09-26 Acid pickling and waste acid treatment process for improving purity of powdery quartz sand Pending CN105197939A (en)

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CN105692629A (en) * 2016-04-28 2016-06-22 江苏泽龙石英有限公司 Quick cleaning method for quartz sand acid pickling
CN105776341A (en) * 2016-01-29 2016-07-20 青岛百特世达工贸有限公司 Treating technology and system for acid-leaching purifying of feldspar and quartz sand pollutant
CN105948060A (en) * 2016-04-28 2016-09-21 江苏泽龙石英有限公司 Depickling method for pickled quartz sands
CN106185953A (en) * 2016-07-06 2016-12-07 王林 A kind of large-scale quartz sand pickling impurity removal whitening process
CN106185954A (en) * 2016-07-06 2016-12-07 王林 A kind of large-scale quartz sand acid eccysis ferrum impurity removal process
CN108101357A (en) * 2017-12-21 2018-06-01 徐维祥 A kind of quartz sand oxalic acid remove iron after saliferous give up oxalic acid water processing and reuse method
CN108190894A (en) * 2018-01-19 2018-06-22 江苏泽龙石英有限公司 A kind of pickling circulation technology of glass sand
CN108545750A (en) * 2018-06-26 2018-09-18 黄冈师范学院 A kind of process of quick raising quartz material whiteness
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CN109665528A (en) * 2019-01-22 2019-04-23 黄冈师范学院 Method containing corundum type quartzite preparation use for electronic products high purity quartz emery dust
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CN112978999A (en) * 2021-03-03 2021-06-18 安徽南玻石英材料有限公司 Waste water treatment method for pickling quartz sand
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CN105776341A (en) * 2016-01-29 2016-07-20 青岛百特世达工贸有限公司 Treating technology and system for acid-leaching purifying of feldspar and quartz sand pollutant
CN105692629A (en) * 2016-04-28 2016-06-22 江苏泽龙石英有限公司 Quick cleaning method for quartz sand acid pickling
CN105948060A (en) * 2016-04-28 2016-09-21 江苏泽龙石英有限公司 Depickling method for pickled quartz sands
CN105948060B (en) * 2016-04-28 2017-12-08 江苏泽龙石英有限公司 The acid stripping method of acid-washed quartz sand
CN105692629B (en) * 2016-04-28 2017-12-08 江苏泽龙石英有限公司 The method that acid-washed quartz sand is quickly cleaned
CN106185953A (en) * 2016-07-06 2016-12-07 王林 A kind of large-scale quartz sand pickling impurity removal whitening process
CN106185954A (en) * 2016-07-06 2016-12-07 王林 A kind of large-scale quartz sand acid eccysis ferrum impurity removal process
CN108101357A (en) * 2017-12-21 2018-06-01 徐维祥 A kind of quartz sand oxalic acid remove iron after saliferous give up oxalic acid water processing and reuse method
CN108190894B (en) * 2018-01-19 2019-12-06 徐州市万达石英有限公司 acid washing circulation process of high-purity quartz sand
CN108190894A (en) * 2018-01-19 2018-06-22 江苏泽龙石英有限公司 A kind of pickling circulation technology of glass sand
CN108545750A (en) * 2018-06-26 2018-09-18 黄冈师范学院 A kind of process of quick raising quartz material whiteness
CN109534347A (en) * 2018-11-06 2019-03-29 黄冈师范学院 A method of use for electronic products high purity quartz emery dust is prepared containing feldspar ore type quartzite
CN109534347B (en) * 2018-11-06 2021-11-02 黄冈师范学院 Method for preparing high-purity quartz sand powder for electronic products from feldspar ore type quartzite
CN109665528A (en) * 2019-01-22 2019-04-23 黄冈师范学院 Method containing corundum type quartzite preparation use for electronic products high purity quartz emery dust
CN109665528B (en) * 2019-01-22 2021-11-02 黄冈师范学院 Method for preparing high-purity quartz sand powder for electronic products from corundum-containing quartzite
CN112744821A (en) * 2019-10-31 2021-05-04 青川县云龙麒达石英砂有限责任公司 Quartz sand acid elution purification process
CN111204768A (en) * 2020-01-09 2020-05-29 上杭鑫昌龙实业有限公司 Method and device for treating waste acid leached by acid in purification process of quartz tailings
CN111204768B (en) * 2020-01-09 2022-11-11 上杭鑫昌龙实业有限公司 Method and device for treating waste acid leached by acid in quartz tailing purification process
CN111285378A (en) * 2020-02-24 2020-06-16 黄冈师范学院 Preparation method of high-whiteness quartz plate sand
CN111661850A (en) * 2020-06-24 2020-09-15 合肥诺玛非金属矿科技有限公司 Quartz sand acid elution purification processing technology
CN111661850B (en) * 2020-06-24 2022-12-13 合肥诺玛非金属矿科技有限公司 Quartz sand acid elution purification processing technology
CN112978999A (en) * 2021-03-03 2021-06-18 安徽南玻石英材料有限公司 Waste water treatment method for pickling quartz sand
CN113003781A (en) * 2021-03-15 2021-06-22 蕲春县昌兴石英设备有限公司 Treatment method of quartz sand pickling sewage
CN113321216A (en) * 2021-06-22 2021-08-31 中国地质科学院郑州矿产综合利用研究所 Method for preparing high-purity quartz by using quartz vein type tungsten waste stone
CN113321216B (en) * 2021-06-22 2023-09-22 中国地质科学院郑州矿产综合利用研究所 Method for preparing high-purity quartz by using quartz vein type tungsten waste stone
CN114956102A (en) * 2022-05-09 2022-08-30 重庆乾吉机电设备有限公司 Process for preparing high-purity 99.9% quartz sand
CN115403049A (en) * 2022-08-30 2022-11-29 资兴旗滨硅业有限公司 Purification method and purification system of quartz sand

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