CN103086382A - Process for preparing high-purity quartz from vein quartz - Google Patents
Process for preparing high-purity quartz from vein quartz Download PDFInfo
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Abstract
The invention discloses a process for preparing high-purity quartz from vein quartz, which comprises the steps of raw vein quartz ore selection, laser fracturing, electromagnetic roasting, water quenching, pulverization and grading, high-gradient magnetic separation, electrostatic separation, impurity removal based on a microwave complexing method, deionized water cleaning and drying. According to the invention, the process flow and structure are reasonable, the technology is advanced, efficient and easy to control, the impurity removal is targeted, high in quality index and favorable in stability; and the high-purity ultrafine quartz material can be used in such high and new technical fields as novel electric light sources, high-insulation sealing, aerospace instruments, war industry technical products, micro electronics, high-grade optical glass, quartz crucible main materials, quartz tubes and quartz rods.
Description
Technical field
The present invention relates to the technique that a kind of vein quartz prepares high purity quartz, specifically relate to a kind of method that vein quartz prepares high pure and ultra-fine English material.
Background technology
The physics of the uniqueness that the high purity quartz material has, chemical property, the silicate minerals of hard, wear-resisting, stable chemical performance, hardness 7, property is crisp without cleavage, conchoidal fracture, and density is 2.65, its calorifics and mechanical property have obvious anisotropy, be insoluble to acid, be slightly soluble in KOH solution, 1750 ℃ of fusing points.Particularly its inherent molecular chain structure, crystal shape and lattice variations rule, make that it has high temperature resistant, thermal expansivity is little, high-insulation, corrosion-resistant, piezoelectric effect, resonance effect with and unique optical characteristics, bringing into play more and more important effect in many high-tech products.The high purity quartz material plays irreplaceable important foundation effect as the core material of silicon raw material in silicon raw material production and supply.
Along with highlighting of energy dilemma, the innovation of novel material, high pure and ultra-fine English material is irreplaceable main raw in a lot of high-technology fields.And the present SiO of China
2Demand more than 〉=99.99% is increasing, and domestic 90% relies on external import, and 10% relies on crystal to make raw material, but Crystal Resances is rare and expensive, and its stability and silicon-dioxide purity do not break through 99.99% standard.How to break several developed countries such as the U.S., Germany, Japan, Russia to the blockade of China's technology, the technical matters method for preparing high pure and ultra-fine English material with vein quartz replacement mineral crystal is great advantage of the present invention.
Domestic common employing prepare high pure and ultra-fine English material method as: the patent No.: 200710132668.1 its technical process are: roughly select → fragmentation → roasting → shrend → the abrasive dust classification → high terraced magnetic magnetic separation → acid soak → deionization washing → drying → product.Because vein quartz must have lot of trace detrimental impurity and other associated mineral because of environmental influence when becoming the ore deposit.Mainly contain the impurity such as nonmetalliferous ore potassium, albite, aluminium, mica etc., metallic ore rhombohedral iron ore, limonite, spathic iron ore and pyrite, so, the shortcoming that adopts the method to produce is: 1., quartzy inherent inclusion impurity do not obtain effectively accurate the removal; 2., the impurity such as rhombohedral iron ore, limonite, spathic iron ore and pyrite do not obtain effectively accurate the removal; 3., the nonmetalliferous ore impurity that is insoluble in acid is not obtained effectively accurate the removal; 4., whole Production Flow Chart is poor to constant product quality control, unstable product quality; 5., SiO
2Content is 99.95%, is difficult to satisfy the high-tech product application requiring.
Summary of the invention
It is the novel process novel method that raw material prepares the thin material of high-purity stishovite that purpose of the present invention aims to provide a kind of vein quartz that adopts; Make the high pure and ultra-fine quartz material be applied to sealing-in, aero-space instrument, military industrial technology product, microelectronics, high-grade opticglass, quartz crucible major ingredient, silica tube, this class high-technology field of quartz pushrod of Novel electric light source, high insulation.
For achieving the above object, the technique that vein quartz of the present invention prepares high purity quartz is that the employing vein quartz is raw material, follows these steps to be prepared: vein quartz raw ore → laser fracturing → electromagnetism roasting → shrend → abrasive dust classification → high terraced magnetic magnetic separation → electrostatic separation → microwave complexometry removal of impurities → washed with de-ionized water → oven dry;
1, the vein quartz raw ore is carried out laser fracturing, makes its associated mineral separate, meet the requirement of roasting granularity with quartz and quartz particles is punctured to become countless small holes;
2, the quartz particles that meets the roasting granularity requirements is carried out the electromagnetism roasting, makes its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) to become ferromagnetic magnetite;
3, the vein quartz particle after the electromagnetism roasting is placed in water fast cooling fast, makes inclusion, steam bubble, the water wave of its mineral inherences be subjected to the quenching explosion, reduce hardness of minerals in the time of shrend;
4, adopt the homogenous medium material to carry out dry method to the mineral after shrend and wet method is first roughly ground, rear Ultrafine Grinding classification is divided into the 1000-3000 order;
5, the silica powder after the Ultrafine Grinding classification is carried out high terraced magnetic magnetic separation, adopting magnetic strength is 50-15000 Gauss's magnetic plant, carry out remove impurity make use of physics methods according to the magnetic contrast of vein quartz and impure mineral, effectively remove the impurity of iron ore, the similar ferromagnetism in Taiyuan Railway Bureau ore deposit and weak magnetic;
6, the mineral after the terraced magnetic magnetic separation of height are carried out electrostatic separation, the non magnetic ore deposit of removing in mineral for the mineral electrical property difference is potassium, albite, aluminium, this class impurity of mica;
7, to above 1 to 6, mineral after the specific aim removal of impurities carry out the removal of impurities of microwave complexometry, the principle that adopts physics and chemistry to combine, activate the inherent metallic impurity ion of mineral by microwave principle, utilize the heat of microwave to accelerate complexing medicament and the rapid reaction of metallic impurity ion, effectively fast precise is removed harmful micro impurity element in mineral;
8, reacted mineral are carried out washed with de-ionized water, further chemical agent and the silica powder surface impurity of remnants are removed, reduce the electric conductivity of silica powder, make the pH value reach standard; Dry again and namely make product.
Illustrating of above-mentioned steps:
1, raw ore adopts laser fracturing to 0.5-1.5cm, meets the requirement of roasting granularity, and utilizing the laser work principle that quartz particles is punctured becomes countless small holes, and the voltage breakdown 32-34Kv/mm of quartz deposit penetrates its part inclusion and breaks;
2, utilize the waste heat of laser fracturing and quartz particles to puncture and become countless small hole advantages, shortened roasting time, maturing temperature 500-700 ℃, roasting time 1-1.5 hour make its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite) and become ferromagnetic magnetite;
3, for more effective accurate inclusion, steam bubble, water wave of removing the mineral inherences, the quartz particles of maturing temperature 500-700 ℃ is placed in the shrend of water chilling, reduce simultaneously hardness of minerals, then to the mineral after shrend adopt the homogenous medium material first roughly grind and again Ultrafine Grinding reach the 1000-3000 order;
4, the ultrafine quartz powder after mill being adopted magnetic intensity is 50-15000 Gauss's magnetic plant, carry out remove impurity make use of physics methods according to the magnetic contrast of vein quartz and impure mineral, effectively remove iron ore, the similar ferromagnetism in Taiyuan Railway Bureau ore deposit and weak magnetic, make product iron content after magnetic separation less than 5ppm;
5, the mineral after the terraced magnetic magnetic separation of height being adopted voltage is 20-30 kilovolt electrostatic separator, and remove non magnetic ore deposit in mineral for mineral electrical property difference difference: the impurity such as potassium, albite, aluminium, mica make its this foreign matter content less than 50ppm;
6, ultrafine quartz powder after above-mentioned 1-5 item art breading is placed in the microwave reaction tank, add again the complexing medicament: oxalic acid, citric acid, hydrofluoric acid carries out the removal of impurities of microwave complexometry in a small amount, microwave is a kind of high-frequency hertzian wave (ultrahigh-frequency microwaves of per second 2,400,000,000 543 magnetic), utilize the powerful penetrance of microwave, make quartz crystal, inclusion, steam bubble, water wave, the crack, the interpore metal ion in small hole and be dissolved in sour impurity and shake fast, off normal, the active raising, simultaneously under the microwave heat promotes with quartz in iron, sodium, plumbous, calcium, the magnesium plasma carries out effective fast precise complex reaction, produce water-soluble stable comple,
7, the ultrafine quartz powder after above-mentioned processing is mainly washing and dried for two steps, wherein, washing step is to adopt deionized water wash, produce water-soluble stable comple when removing reaction, to reduce the electric conductivity of material, adopt microwave KL-2D-40GZ type drying machine to carry out drying, this equipment is without any pollution, fast energy-saving, product moisture is less than 0.5%.
The technique that vein quartz of the present invention prepares high purity quartz compared with prior art has following excellent effect:
1, the present invention utilizes the domestic vein quartz that enriches to be raw material, break and rely on expensive and resource scarcity crystal is made raw material, energy-conserving and environment-protective, reduced cost, replace imported, save foreign exchange, be adapted to sealing-in, aero-space instrument, military industrial technology product, microelectronics, high-grade opticglass, quartz crucible major ingredient, silica tube, this class high-technology field of quartz pushrod of Novel electric light source, high insulation.
2, the present invention adopts the modern technique removal of impurities such as laser fracturing, electromagnetism roasting, shrend, abrasive dust classification, high terraced magnetic magnetic separation, electrostatic separation, microwave complexometry, make its Sio2 content reach 99.99-99.9998%, impurity level contains＜30ppm, granularity 1000-3000 order, replace imported.The industry requirements such as electronics, high-grade opticglass, quartz crucible major ingredient, silica tube, quartz pushrod.
3, the present invention adopts laser fracturing, utilizes the laser work principle that quartz particles is punctured to become countless small holes; its most of inclusion is penetrated break, the electromagnetism roasting makes its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) to become the effective fast precise of favourable next step the high terraced magnetic magnetic separation of ferromagnetic magnetite and remove in mineral harmful trace impurity.
4, the present invention has adopted electrostatic separation, strives mineral electrical property difference difference is removed non magnetic ore deposit in mineral: potassium, albite, aluminium, this class impurity of mica.
5, the present invention utilizes the powerful penetrance of microwave, make quartz crystal, inclusion, steam bubble, water wave, crack, the interpore metal ion in small hole and be dissolved in that sour impurity shakes fast, offs normal, the active raising, simultaneously under the microwave heat promotes with quartz in trace iron, sodium, lead, calcium, magnesium plasma carry out effective fast precise complex reaction, produce water-soluble stable comple, reach effective fast precise removal of impurities purpose by solid-liquid separation, deionized water wash.
6, process structure rationally, efficient, easy to control except advanced technology, assorted targetedly, high, the good stability of quality index.
Description of drawings
Fig. 1 is process flow sheet.
Embodiment
The present invention is described in further detail below in conjunction with process flow sheet of the present invention.
1, adopt the former mineral content Sio2 of Fcngxin Jiangxi county's vein quartz 〉=98.26%～Sio2 〉=99.2%, foreign matter content is 1.5～0.7%, raw ore is of a size of≤and the 10cm left and right;
2, adopt laser fracturing, raw ore is of a size of≤10cm is crushed to 0.5-1.5cm, its associated mineral being separated with quartz and quartz particles is punctured becomes countless small holes;
3, adopt the electromagnetism roasting, the quartz particles that is crushed to 0.5-1.5cm is placed in the electromagnetism stoving oven, utilize the waste heat of laser fracturing to carry out roasting, maturing temperature 500-700 ℃, made its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) in time 1-1.5 hour and become ferromagnetic magnetite;
4, adopt shrend, the quartz particles of 500-700 ℃ of electromagnetism maturing temperature is placed in the shrend of water chilling, make inclusion, steam bubble, the water wave of its mineral inherences be subjected to the chilling explosion, reduce hardness of minerals in the time of shrend;
5, adopt the high silicon liner ball mill of homogenous medium material first to roughly grind the 100-200 order, then carry out Ultrafine Grinding with the high silicon liner ultra-fine grinding mill of homogenous medium material and reach the 1000-3000 order;
6, adopting high terraced magnetic magnetic separation, magnetic intensity is 50-15000 Gauss's magnetic plant, carries out remove impurity make use of physics methods according to the magnetic contrast of vein quartz and impure mineral, effectively removes iron ore, the similar ferromagnetism in Taiyuan Railway Bureau ore deposit and weak magnetic, makes product iron content after magnetic separation less than 5ppm;
7, adopt electrostatic separation, the mineral after the terraced magnetic magnetic separation of height are adopted voltage is 20-30 kilovolt electrostatic separator, strive electrical property difference difference in mineral is removed non magnetic ore deposit in mineral: potassium, albite, aluminium, this class impurity of mica make its this foreign matter content less than 50ppm;
8, adopt the removal of impurities of microwave complexometry, ultrafine quartz powder after above-mentioned 1-7 item art breading is placed in the microwave reaction tank, then adds the complexing medicament: oxalic acid, citric acid, hydrofluoric acid carries out the removal of impurities of microwave complexometry in a small amount, and the medicament ratio is: silica powder: water=oxalic acid: citric acid: hydrofluoric acid (being industrial), and namely 1 ton of silica powder adds 2 tons of water, and the gross weight of silica powder and water adds 3-6% oxalic acid, the 7-10% citric acid adds 2-4% hydrofluoric acid, and constant temperature is to 50-70 ℃ in the microwave reaction tank, reacted 1-2 hour, microwave is a kind of high-frequency hertzian wave (ultrahigh-frequency microwaves of per second 2,400,000,000 543 magnetic), utilizes the powerful penetrance of microwave, makes quartz crystal, inclusion, steam bubble, water wave, the crack, the interpore metal ion in small hole and be dissolved in sour impurity and shake fast, off normal, the active raising, simultaneously under the microwave heat promotes with quartz in iron, sodium, plumbous, calcium, aluminium, the magnesium plasma carries out effective fast precise complex reaction, produces water-soluble stable comple, reaches the removal of impurities purpose by solid-liquid separation, and total impurities is down to less than 30ppm,
9, adopt the deionization washing, produce water-soluble stable comple when effectively removing reaction, reduce simultaneously the electric conductivity of material, deionized water consumption and product proportion 8: 1, specific conductivity: 1um;
10, adopt microwave KL-2D-40GZ type drying machine to carry out drying at temperature 180-260 ℃, this equipment is without any pollution, fast energy-saving, and product moisture is less than 0.3%.；
11, the main Quality Index Analysis of product:
AI13.4ppm、Ca1.1ppm、Fe0.7ppm、Li1.3ppm、
Mn＜0.1ppm、Ti0.1ppm、B＜0.1ppm?Cu＜0.1ppm、
K0.9ppm、Mg0.3ppm、Na1.2ppm、Ni＜0.1ppm。
Sio2 〉=99.99%-99.9998%, total impurities＜18.4ppm.
Specific conductivity: 1um.
The explanation of technological process principle:
1., laser fracturing utilizes the laser work principle that quartz particles is punctured becomes countless small holes, its most of inclusion is penetrated breaks.
2., the electromagnetism roasting makes its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) to become ferromagnetic magnetite.
3., high terraced magnetic magnetic separation carries out remove impurity make use of physics methods according to the magnetic contrast of vein quartz and impure mineral, effectively removes iron ore, the similar ferromagnetism in Taiyuan Railway Bureau ore deposit and weak magnetic.
4., electrostatic separation is striven mineral electrical property difference difference is removed non magnetic ore deposit in mineral: potassium, albite, aluminium, this class impurity of mica.
5., the removal of impurities of microwave complexometry utilizes the principle that physics and chemistry combines, activate the inherent metallic impurity ion of mineral by microwave principle, utilize the heat of microwave to accelerate complexing medicament and the rapid reaction of metallic impurity ion, effectively fast precise is removed harmful micro impurity element in mineral.
6., deionized water wash, produce water-soluble stable comple when removing reaction, reduce simultaneously the electric conductivity of material.
Produce explanation:
1., laser fracturing, make its associated mineral separate, meet the requirement of roasting granularity with quartz and quartz particles is punctured to become countless small holes.
2., electromagnetism roasting, make its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) to become ferromagnetic magnetite.
3., electrostatic separation, remove the impurity such as potassium in mineral, albite, aluminium, mica.
4., the removal of impurities of microwave complexometry, activate the inherent metallic impurity ion of mineral, accelerate complexing medicament and the rapid reaction of metallic impurity ion.
5., first adopt physical principle to the removal of impurities of mineral, again utilize physical principle in conjunction with the synchronous effectively fast precise removal of impurities simultaneously of chemical agent reaction principle.
6., adopt and above-mentionedly 1. to make vein quartz prepare high purity quartz material SiO to a 5. technical characterstic
2〉=99.99-99.9998%.
Claims (3)
1. a vein quartz prepares the technique of high purity quartz, through vein quartz raw ore → laser fracturing → electromagnetism roasting → shrend → abrasive dust classification → high terraced magnetic magnetic separation → electrostatic separation → microwave complexometry removal of impurities → washed with de-ionized water → oven dry, it is characterized in that
(1) the vein quartz raw ore is carried out laser fracturing, makes its associated mineral separate, meet the requirement of roasting granularity with quartz and quartz particles is punctured to become countless small holes;
(2) quartz particles that meets the roasting granularity requirements is carried out the electromagnetism roasting, makes its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) to become ferromagnetic magnetite;
(3) the vein quartz particle after the electromagnetism roasting is placed in water fast cooling fast, makes inclusion, steam bubble, the water wave of its mineral inherences be subjected to the quenching explosion, reduce hardness of minerals in the time of shrend;
(4) adopt the homogenous medium material to carry out dry method to the mineral after shrend and wet method is first roughly ground, rear Ultrafine Grinding classification is divided into the 1000-3000 order;
(5) silica powder after the Ultrafine Grinding classification is carried out high terraced magnetic magnetic separation, adopting magnetic strength is 50-15000 Gauss's magnetic plant, carry out remove impurity make use of physics methods according to the magnetic contrast of vein quartz and impure mineral, effectively remove the impurity of iron ore, the similar ferromagnetism in Taiyuan Railway Bureau ore deposit and weak magnetic;
(6) mineral after the terraced magnetic magnetic separation of height are carried out electrostatic separation, the non magnetic ore deposit of removing in mineral for the mineral electrical property difference is potassium, albite, aluminium, this class impurity of mica;
(7) to above 1 to 6, mineral after the specific aim removal of impurities carry out the removal of impurities of microwave complexometry, the principle that adopts physics and chemistry to combine, activate the inherent metallic impurity ion of mineral by microwave principle, utilize the heat of microwave to accelerate complexing medicament and the rapid reaction of metallic impurity ion, effectively fast precise is removed harmful micro impurity element in mineral;
(8) reacted mineral are carried out washed with de-ionized water, further chemical agent and the silica powder surface impurity of remnants are removed, reduce the electric conductivity of silica powder, make the pH value reach standard; Dry again and namely make product.
2. vein quartz according to claim 1 prepares the technique of high purity quartz, it is characterized in that
(1) adopt the former mineral content Sio2 of Fcngxin Jiangxi county's vein quartz 〉=98.26%～Sio2 〉=99.2%, foreign matter content is 1.5～0.7%, raw ore is of a size of≤and the 10cm left and right;
(2) adopt laser fracturing, raw ore is of a size of≤10cm is crushed to 0.5-1.5cm, its associated mineral being separated with quartz and quartz particles is punctured becomes countless small holes;
(3) adopt the electromagnetism roasting, the quartz particles that is crushed to 0.5-1.5cm is placed in the electromagnetism stoving oven, utilize the waste heat of laser fracturing to carry out roasting, maturing temperature 500-700 ℃, made its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) in time 1-1.5 hour and become ferromagnetic magnetite;
(4) adopt shrend, the quartz particles of 500-700 ℃ of electromagnetism maturing temperature is placed in the shrend of water chilling, make inclusion, steam bubble, the water wave of its mineral inherences be subjected to the chilling explosion, reduce hardness of minerals in the time of shrend;
(5) adopt the high silicon liner ball mill of homogenous medium material first to roughly grind the 100-200 order, then carry out Ultrafine Grinding with the high silicon liner ultra-fine grinding mill of homogenous medium material and reach the 1000-3000 order;
(6) adopting high terraced magnetic magnetic separation, magnetic intensity is 50-15000 Gauss's magnetic plant, carry out remove impurity make use of physics methods according to the magnetic contrast of vein quartz and impure mineral, effectively remove iron ore, the similar ferromagnetism in Taiyuan Railway Bureau ore deposit and weak magnetic, make product iron content after magnetic separation less than 5ppm;
(7) adopt electrostatic separation, the mineral after the terraced magnetic magnetic separation of height are adopted voltage is 20-30 kilovolt electrostatic separator, remove non magnetic ore deposit in mineral for electrical property difference difference in mineral: potassium, albite, aluminium, this class impurity of mica make its this foreign matter content less than 50ppm;
(8) adopt the removal of impurities of microwave complexometry, the ultrafine quartz powder after above-mentioned 1-7 item art breading is placed in the microwave reaction tank, add the complexing medicament: oxalic acid, citric acid, hydrofluoric acid carries out the removal of impurities of microwave complexometry (the medicament ratio is: silica powder: water=oxalic acid: citric acid: hydrofluoric acid in a small amount again, namely, 1 ton of silica powder adds 2 tons of water, the gross weight of silica powder and water adds 3-6% oxalic acid, 7-10% citric acid, add 2-4% hydrofluoric acid, in the microwave reaction tank constant temperature to 50-70 ℃, the reaction 1-2 hour).Microwave is a kind of high-frequency hertzian wave (ultrahigh-frequency microwaves of per second 2,400,000,000 543 magnetic), utilize the powerful penetrance of microwave, make quartz crystal, inclusion, steam bubble, water wave, crack, the interpore metal ion in small hole and be dissolved in that sour impurity shakes fast, offs normal, the active raising, simultaneously under the microwave heat promotes with quartz in iron, sodium, lead, calcium, aluminium, magnesium plasma carry out effective fast precise complex reaction, produce water-soluble stable comple, reach the removal of impurities purpose by solid-liquid separation, total impurities is down to less than 30ppm;
(9) adopt the deionization washing, produce water-soluble stable comple when effectively removing reaction, reduce simultaneously the electric conductivity of material, deionized water consumption and product proportion 8: 1, specific conductivity: 1um;
(10) adopt microwave KL-2D-40GZ type drying machine to carry out drying at temperature 180-260 ℃, this equipment is without any pollution, fast energy-saving, and product moisture is less than 0.3%.
3. vein quartz according to claim 1 prepares the technique of high purity quartz, it is characterized in that
(1) laser fracturing, make its associated mineral separate, meet the requirement of roasting granularity with quartz and quartz particles is punctured to become countless small holes;
(2) electromagnetism roasting, make its quartz mine contain weak magnetism mineral (rhombohedral iron ore, limonite, spathic iron ore and pyrite etc.) to become ferromagnetic magnetite;
(3) potassium, albite, aluminium, this class impurity of mica in mineral are removed in electrostatic separation;
(4) microwave complexometry removal of impurities, the inherent metallic impurity ion of activation mineral are accelerated complexing medicament and the rapid reaction of metallic impurity ion;
(5) first adopt physical principle to the removal of impurities of mineral, again utilize physical principle in conjunction with the synchronous effectively fast precise removal of impurities simultaneously of chemical agent reaction principle;
(6) 1. make vein quartz prepare high purity quartz material SiO to a 5. technology more than adopting
2〉=99.99-99.9998%.
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| CN111841829A (en) * | 2020-06-23 | 2020-10-30 | 中国地质科学院郑州矿产综合利用研究所 | High-value comprehensive utilization method for quartz sandstone |
| CN112774831A (en) * | 2020-11-27 | 2021-05-11 | 东海县晶峰石英制品有限公司 | Production process of high-purity quartz powder processed by using quartz raw stone |
| 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 |
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