CN104556047A - Production process for preparing high-purity quartz powder from quartzite - Google Patents
Production process for preparing high-purity quartz powder from quartzite Download PDFInfo
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Abstract
The invention discloses a production process for preparing high-purity quartz powder from quartzite. The production process comprises the following steps: 1) soaking; 2) smashing; 3) calcining; 4) water quenching; 5) grinding; 6) magnetic separation; 7) elestrostatic separation; 8) acid pickling; 9) cleaning by deionized water; 10) drying. According to the production process, the contamination particles are eluted via gradient acidity distribution; before the smashing, strong acid is used for soaking so as to remove the impurities on the surface of the quartzite; during the water quenching, medium/strong acid is used for removing the metal impurities wrapped in the quartzite; during the grinding, in order to protect the equipment from erosion, medium/weak acid is used for removing the impurities during the grinding, and a ball grinding mill is utilized to increase the contact probability and contact area between the acid liquor and the impurities so as to increase the impurity removal efficiency; during the final acid pickling, weak acid is used for further removing a small quantity of residual contamination particles which are not reacted completely; the afterheat generated during the calcination is collected and used for the final drying, so that the energy consumption is reduced and the production cost of the enterprise is decreased.
Description
Technical field
The present invention relates to natural mineral purifying technique, especially relate to the purifying technique of high-purity quartz, particularly relate to a kind of production technique preparing high-purity quartz powder with quartzite.
Background technology
High-purity quartz powder has excellent physics-chem characteristic, and hardness is high, high temperature resistant, corrosion-resistant, electric conductivity is low, wave penetrate capability is good, stable performance.Particularly its inherent molecular chain structure, crystal shape and lattice variations rule, the thermal expansivity made it have is little, the optical characteristics of high-insulation, piezoelectric effect, resonance effect and its uniqueness, obtains applying more and more widely in the field such as sealing-in, aerospace, defence and military of many high-tech areas as Novel electric light source, microelectronics, high insulation.
Along with the new high-tech industries such as optical fiber industry, electronic industry, microelectronics industry develop rapidly, more and more higher to the requirement of high pure and ultra-fine quartz powder, demand is also increasing.The making raw material of current quartzy powder mostly is high-quality natural quartz mineral aggregate, and its technical process is: raw material → coarse crushing → pickling → washing → drying → dry method superfine grinding → classification → product.But the quartzy raw ore quality of all parts of the country differs, foreign matter content difference is very large, and the purity of the high pure and ultra-fine quartz powder adopting traditional technology to obtain is difficult to stablize.Meanwhile, the consumption of processing to the energy of quartz products is huge, needs a large amount of electric energy and heat energy in traditional technology, and this needs to consume a large amount of coal and Sweet natural gas; Meanwhile, in the technique that conventional dry is pulverized, tiny dust can bring expendable physiological damage to operator.How how the purifying technique of developing green environmental protection, enhance productivity, how to reduce the problems such as the energy consumption in production technique, dust and energy recovery recycling, become focus and the difficult point of business research instantly.
Summary of the invention
For above-mentioned weak point, the object of the present invention is to provide a kind of production technique preparing high-purity quartz powder with quartzite of energy-conserving and environment-protective.
Technical scheme of the present invention is summarized as follows:
Prepare a production technique for high-purity quartz powder with quartzite, comprise following operation: 1) soak; 2) pulverize; 3) calcine; 4) shrend; 5) grind; 6) magnetic separation; 7) electrostatic separation; 8) pickling; 9) washed with de-ionized water; 10) dry;
Wherein, in operation 1) in, quartzite to be immersed in the first acid solution 0.5 ~ 1 hour, described first acid solution comprises 3 ~ 5wt%HCl, 10 ~ 12wt%HNO
3, 6 ~ 8wt%H
2sO
4with the aqueous solution of 0.1 ~ 0.3wt%HF;
In operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, described second acid solution comprises 1 ~ 3wt%HCl, 2 ~ 4wt%HNO
3, 1 ~ 3wt%H
2sO
4, 6 ~ 8wt% phosphoric acid, 5 ~ 7wt% boric acid, 3 ~ 5wt% phosphorous acid and 10 ~ 12wt% lemon aqueous acid;
In operation 5) in, grinding adopts ball mill to operation 4) gained mineral carry out wet ball grinding, the inner bag surface of described ball mill is provided with acid-resistant layer, in described ball mill, ball milling device surface is equipped with acid-resistant layer, when grinding, in described ball mill, add the 3rd acid solution, described 3rd acid solution comprises 0.5 ~ 1wt% nitric acid, 0.5 ~ 1wt% hydrochloric acid, 2.5 ~ 3.5wt% phosphoric acid, 3 ~ 5wt% tartrate, 4 ~ 6wt% citric acid, 2 ~ 4wt% Phenylsulfonic acid, 2 ~ 4wt% acetic acid and 1 ~ 2wt% grass aqueous acid;
In operation 8) in, adopt the 4th acid solution pickling 1 hour, described 4th acid solution comprises 0.1 ~ 0.3wt% nitric acid, 0.5 ~ 1wt% phosphoric acid, 1 ~ 3wt% citric acid, 0.5 ~ 1.5wt% Phenylsulfonic acid, 0.5 ~ 1.5wt% acetic acid and 0.3 ~ 0.5wt% grass aqueous acid.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, in operation 2) in, when pulverizing, add abrasive material and carry out scrubbing-desliming, described abrasive material comprises: the norbide of 20wt% ~ 25wt%, the silicon carbide of 30wt% ~ 40wt%, and all the other are corundum;
In operation 4) in, when shrend, in described second acid solution, be provided for the ultrasonic wave of shaking, described hyperacoustic frequency is 200 ~ 300Hz.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, in operation 10) in, dry heat used from operation 3) in waste heat in calcining furnace, adherent on the outer wall of calcining furnace a thermal-arrest cabin is set, the cavity for air circulation is provided with in described thermal-arrest cabin, by arranging several gas blowers and insulated piping, freezing air is imported to described thermal-arrest cabin to heat, again by heating after warm air be directed into operation 10) in for dry, described insulated piping inwall is provided with one deck Kapton.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, operation 3) in, calcining temperature is 800 ~ 840 DEG C.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, operation 5) in, by operation 4) to be ground to grain diameter be 1800 orders to gained mineral.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, operation 6) in, magnetic separation employing magneticstrength is the magnetic plant of 500 ~ 15000 Gausses.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, operation 7) in, electrostatic separation employing voltage is the electrostatic separation equipment of 15 ~ 20 kilovolts.
Preferably, the described production technique preparing high-purity quartz powder with quartzite, operation 2) in, quartzite being crushed to particle diameter is 0.5 ~ 2mm.
The invention has the beneficial effects as follows:
1) this case adopts gradient acidity stepwise elution impurity particle; before pulverizing, first adopt strong acid to soak with the film iron and other metallic impurity that remove quartzite surface; when shrend; in employing, strong acid continues the metallic impurity that removing is wrapped in quartzite inside; when grinding; for proterctive equipment is from corrosion; in employing, weak acid is in grinding removal of impurities simultaneously; contact probability and the contact area of acid solution and impurity is increased by ball mill; thus increase dust removal rate; in the end during a step pickling, weak acid is adopted to remove a small amount of remaining unreacted contaminant particles completely further.
1) coarse crushing and scrubbing-desliming are incorporated in an operation, by adding composite abrasive material, make the film iron while coarse crushing, quartzite surface not cleaned by acid solution and mud Impurity removal clean, both improve production efficiency, again reduced energy consumption;
2) when shrend, in order to the structure making the mineral after calcining more be loosened, simultaneously in order to improve the speed of reaction of acid solution and metallic impurity, have employed ultrasonic wave in order to concussion, while ensureing mineral structure loose nature, improve dust removal rate, save time cost;
3) waste heat produced during calcining is collected, and this heat is used for last drying, both reduced energy consumption, and additionally reduced the production cost of enterprise;
4) by the modified version washing lotion removal of impurities stage by stage of stepwise gradient formula, reduce traditional high density acid solution to the corrosion of equipment, meanwhile, add contact probability and the time of acid solution and impurity, further increase the effect of removal of impurities, thus ensure that the high purity of product.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
This case proposes a kind of production technique preparing high-purity quartz powder with quartzite, comprises following operation: 1) soak; 2) pulverize; 3) calcine; 4) shrend; 5) grind; 6) magnetic separation; 7) electrostatic separation; 8) pickling; 9) washed with de-ionized water; 10) dry;
Wherein, in operation 1) in, quartzite to be immersed in the first acid solution 0.5 ~ 1 hour, the first acid solution comprises 3 ~ 5wt%HCl, 10 ~ 12wt%HNO
3, 6 ~ 8wt%H
2sO
4with the aqueous solution of 0.1 ~ 0.3wt%HF; The object of soaking is the metallic impurity removing quartzite surface as much as possible, to improve crush efficiency, reduces the energy consumption pulverized, can alleviate the pressure of follow-up pickling impurity removal simultaneously.Metallic impurity because of quartzite surface are relatively the most stable, therefore stronger acidity is needed to remove, therefore each substances content in the first acid formula should be limited, if acid too high, the acid solution being then adsorbed in quartzite surface can cause the erosion of unrepairable to follow-up equipment, if acid too low, then and the DeGrain of this operation removal of impurities, cause this operation to lose efficacy, cause the waste in the energy and man-hour.
In operation 2) in, when pulverizing, add abrasive material and carry out scrubbing-desliming, this abrasive material comprises: the norbide of 20wt% ~ 25wt%, the silicon carbide of 30wt% ~ 40wt%, and all the other are corundum; The proportioning of abrasive material should be defined, and sets during this proportioning for the mean specific gravity of mud impurity in natural quartz rock, if exceed above-mentioned ratio range, mud impurity in natural quartz rock will be caused cannot to be completely removed totally.In addition, operation 2) in, preferably quartzite being crushed to particle diameter is 0.5 ~ 2mm, so that the precision work of follow-up equipment.
Operation 3) in, calcining temperature is preferably 800 ~ 840 DEG C, and calcination time is preferably 0.5 ~ 1.5 hour.Because this case improves in other operations, therefore calcining temperature lower than the calcining temperature of traditional 900 ~ 1100 DEG C, can meet the requirement of energy-conserving and environment-protective.
In operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, the second acid solution comprises 1 ~ 3wt%HCl, 2 ~ 4wt%HNO
3, 1 ~ 3wt%H
2sO
4, 6 ~ 8wt% phosphoric acid, 5 ~ 7wt% boric acid, 3 ~ 5wt% phosphorous acid and 10 ~ 12wt% lemon aqueous acid; In addition, when shrend, can be provided for the ultrasonic wave of shaking in the second acid solution, hyperacoustic frequency is 200 ~ 300Hz.The effect of shrend be by calcining after mineral after chilling, obtain loose structure, be beneficial to follow-up grinding, significantly can reduce energy consumption, and improve mill efficiency.Shrend the second acid solution used can carry out acid-base reaction by metallic impurity in the Formation period of mineral hole and mineral, by thinking contact reacts with large-area hole, the effect of pickling impurity removal can be improved at least 10%, the ultrasonic wave simultaneously increased can improve the speed of acid-base reaction with the second acid solution coordinated, therefore, in the second acid solution, the content of each component should be limited, if their content is on the low side, then cause the metallic impurity in mineral hole to remove in a large number, thus have impact on the purity of product; If content is higher, then can suppress the growth of mineral hole, corrosion be caused to follow-up grinding plant simultaneously.Same, in order to second acid solution used with shrend matches, hyperacoustic range of frequency also should be limited.Frequency is too high can accelerate the corrosion of acid solution to equipment, and underfrequency also cannot reach the effect of removal of impurities.
In operation 5) in, grinding adopts ball mill to operation 4) gained mineral carry out wet ball grinding, the inner bag surface of ball mill is provided with acid-resistant layer, this acid-resistant layer can be quartz layer or silicon carbide-containing, the quartz layer of norbide, in ball mill, ball milling device surface also must be provided with acid-resistant layer, when grinding, the 3rd acid solution is added in ball mill, 3rd acid solution comprises 0.5 ~ 1wt% nitric acid, 0.5 ~ 1wt% hydrochloric acid, 2.5 ~ 3.5wt% phosphoric acid, 3 ~ 5wt% tartrate, 4 ~ 6wt% citric acid, 2 ~ 4wt% Phenylsulfonic acid, 2 ~ 4wt% acetic acid and 1 ~ 2wt% grass aqueous acid, ball milling is by the process of mineral fragmentation, and be the best moment with acid solution removal of impurities in the process, acid solution and impurity fully mix and contacts, reaction contact surface is large, and duration of contact is long, and impurity-eliminating effect is splendid, consider the impact on equipment, the pickling of following preceding processes, this operation only needs medium acidity on the weak side, therefore, each component concentration of the 3rd acid solution should be limited, if each component concentration is bigger than normal, then causes acid rising, corrosion is caused to equipment, if each component concentration is less than normal, then impurity-eliminating effect can be caused not good, bring impact to the final purity of product.In addition, operation 5) in, preferably by operation 4) grinding of gained mineral is until grain diameter is 1800 orders.
Operation 6) in, magnetic separation employing magneticstrength is the magnetic plant of 500 ~ 15000 Gausses, and iron in the soil of ore deposit, ferrotianium class ferromagnetism and weak magnetic impurity effectively can be removed in height two kinds of magnetic fields.
Operation 7) in, electrostatic separation employing voltage is the electrostatic separation equipment of 15 ~ 20 kilovolts, owing to arriving operation 7) time, metal content in mineral is very low, so the voltage of electrostatic separation is lower than the voltage in traditional technology, it is for removing the non magnetic ore deposit in the soil of ore deposit, as: the impurity such as potassium, albite, aluminium, mica.
In operation 8) in, adopt the 4th acid solution pickling 1 hour, the 4th acid solution comprises 0.1 ~ 0.3wt% nitric acid, 0.5 ~ 1wt% phosphoric acid, 1 ~ 3wt% citric acid, 0.5 ~ 1.5wt% Phenylsulfonic acid, 0.5 ~ 1.5wt% acetic acid and 0.3 ~ 0.5wt% grass aqueous acid.Operation 8) effect be by remaining also not consoluet metallic impurity removing, therefore it is not high to the requirement of strength of acidity, preferably can use some inorganic and organic monoacids, owing to containing polytype acid in composite acid solution, it can remove a greater variety of metal particle and alkaline impurities, and thus in the 4th acid solution, the content of each component should be limited, if too high levels, then cause the wasting of resources, add unnecessary production cost, also unnecessary damage is caused to equipment simultaneously; If content is too low, then tiny metal particle may be caused by Ex-all, the purity of final quartzy powder cannot to be reduced.
In operation 10) in, dry heat used from operation 3) in waste heat in calcining furnace, adherent on the outer wall of calcining furnace a thermal-arrest cabin is set, the cavity for air circulation is provided with in thermal-arrest cabin, by arranging several gas blowers and insulated piping, freezing air is imported to thermal-arrest cabin to heat, then the warm air after heating is directed into operation 10) in for drying, and to circulate with this.Insulated piping inwall is provided with one deck Kapton.
Content >=99.95% of silicon-dioxide in the quartzy powder adopting above-mentioned technique to obtain.
Embodiment 1
Prepare a production technique for high-purity quartz powder with quartzite, comprise following operation: 1) soak; 2) pulverize; 3) calcine; 4) shrend; 5) grind; 6) magnetic separation; 7) electrostatic separation; 8) pickling; 9) washed with de-ionized water; 10) dry;
Wherein, in operation 1) in, quartzite to be immersed in the first acid solution 0.5 hour, the first acid solution comprises 3wt%HCl, 10wt%HNO
3, 6wt%H
2sO
4with the aqueous solution of 0.1wt%HF.
In operation 2) in, when pulverizing, add abrasive material and carry out scrubbing-desliming, this abrasive material comprises: the corundum of the norbide of 20wt%, the silicon carbide of 30wt% and 50wt%.Quartzite being crushed to particle diameter is 0.5 ~ 2mm.
Operation 3) in, calcining temperature is 800 DEG C, and calcination time is 0.5 hour.
In operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, the second acid solution comprises 1wt%HCl, 2wt%HNO
3, 1wt%H
2sO
4, 6wt% phosphoric acid, 5wt% boric acid, 3wt% phosphorous acid and 10wt% lemon aqueous acid; In addition, when shrend, in the second acid solution, be provided for the ultrasonic wave of shaking, hyperacoustic frequency is 200Hz.
In operation 5) in, grinding adopts ball mill to operation 4) gained mineral carry out wet ball grinding, the inner bag surface of ball mill is provided with acid-resistant layer, in ball mill, ball milling device surface also must be provided with acid-resistant layer, when grinding, in ball mill, add the 3rd acid solution, the 3rd acid solution comprises 0.5wt% nitric acid, 0.5wt% hydrochloric acid, 2.5wt% phosphoric acid, 3wt% tartrate, 4wt% citric acid, 2wt% Phenylsulfonic acid, 2wt% acetic acid and 1wt% grass aqueous acid.Further, in operation 5) in, by operation 4) gained mineral grinding until grain diameter reaches 1800 orders.
Operation 6) in, magnetic separation employing magneticstrength is the magnetic plant of 500 ~ 15000 Gausses.
Operation 7) in, electrostatic separation employing voltage is the electrostatic separation equipment of 15 kilovolts.
Operation 8) in, adopt the 4th acid solution pickling 1 hour, the 4th acid solution comprises 0.1wt% nitric acid, 0.5wt% phosphoric acid, 1wt% citric acid, 0.5wt% Phenylsulfonic acid, 0.5wt% acetic acid and 0.3wt% grass aqueous acid.
In operation 10) in, dry heat used from operation 3) in waste heat in calcining furnace, adherent on the outer wall of calcining furnace a thermal-arrest cabin is set, the cavity for air circulation is provided with in thermal-arrest cabin, by arranging several gas blowers and insulated piping, freezing air is imported to thermal-arrest cabin to heat, then the warm air after heating is directed into operation 10) in for drying, and to circulate with this.Insulated piping inwall is provided with one deck Kapton.
Embodiment 2
Prepare a production technique for high-purity quartz powder with quartzite, comprise following operation: 1) soak; 2) pulverize; 3) calcine; 4) shrend; 5) grind; 6) magnetic separation; 7) electrostatic separation; 8) pickling; 9) washed with de-ionized water; 10) dry;
Wherein, in operation 1) in, quartzite to be immersed in the first acid solution 1 hour, the first acid solution comprises 5wt%HCl, 12wt%HNO
3, 8wt%H
2sO
4with the aqueous solution of 0.3wt%HF.
In operation 2) in, when pulverizing, add abrasive material and carry out scrubbing-desliming, this abrasive material comprises: the corundum of the norbide of 25wt%, the silicon carbide of 40wt% and 35wt%.In addition, operation 2) in, quartzite being crushed to particle diameter is 0.5 ~ 2mm.
Operation 3) in, calcining temperature is 840 DEG C, and calcination time is 1.5 hours.
Operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, the second acid solution comprises 3wt%HCl, 4wt%HNO
3, 3wt%H
2sO
4, 8wt% phosphoric acid, 7wt% boric acid, 5wt% phosphorous acid and 12wt% lemon aqueous acid; In addition, when shrend, in the second acid solution, be provided for the ultrasonic wave of shaking, hyperacoustic frequency is 300Hz.
In operation 5) in, grinding adopts ball mill to operation 4) gained mineral carry out wet ball grinding, the inner bag surface of ball mill is provided with acid-resistant layer, in ball mill, ball milling device surface also must be provided with acid-resistant layer, when grinding, in ball mill, add the 3rd acid solution, the 3rd acid solution comprises 1wt% nitric acid, 1wt% hydrochloric acid, 3.5wt% phosphoric acid, 5wt% tartrate, 6wt% citric acid, 4wt% Phenylsulfonic acid, 4wt% acetic acid and 2wt% grass aqueous acid.Further, in operation 5) in, by operation 4) gained mineral grinding until grain diameter reaches 1800 orders.
Operation 6) in, magnetic separation employing magneticstrength is the magnetic plant of 500 ~ 15000 Gausses.
Operation 7) in, electrostatic separation employing voltage is the electrostatic separation equipment of 20 kilovolts.
In operation 8) in, adopt the 4th acid solution pickling 1 hour, the 4th acid solution comprises 0.3wt% nitric acid, 1wt% phosphoric acid, 3wt% citric acid, 1.5wt% Phenylsulfonic acid, 1.5wt% acetic acid and 0.5wt% grass aqueous acid.
In operation 10) in, dry heat used from operation 3) in waste heat in calcining furnace, adherent on the outer wall of calcining furnace a thermal-arrest cabin is set, the cavity for air circulation is provided with in thermal-arrest cabin, by arranging several gas blowers and insulated piping, freezing air is imported to thermal-arrest cabin to heat, then the warm air after heating is directed into operation 10) in for drying, and to circulate with this.Insulated piping inwall is provided with one deck Kapton.
Following table is the purity check (wt%) of the quartzy powder adopting the technique of embodiment 1 and 2 to obtain:
| SiO 2 | Fe 2O 3 | Al 2O 3 | CaO | MgO | K | Na | TiO 2 | WO 3 | SnO 2 | MnO | |
| Embodiment 1 | 99.96 | 0.003 | 0.01 | 0.01 | 0.003 | 0.003 | 0.003 | 0.002 | 0.002 | 0.002 | 0.002 |
| Embodiment 2 | 99.98 | 0.002 | 0.003 | 0.005 | 0.001 | 0.002 | 0.002 | 0.002 | 0.001 | 0.001 | 0.001 |
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details.
Claims (8)
1. prepare a production technique for high-purity quartz powder with quartzite, comprise following operation: 1) soak; 2) pulverize; 3) calcine; 4) shrend; 5) grind; 6) magnetic separation; 7) electrostatic separation; 8) pickling; 9) washed with de-ionized water; 10) dry;
Wherein, in operation 1) in, quartzite to be immersed in the first acid solution 0.5 ~ 1 hour, described first acid solution comprises 3 ~ 5wt%HCl, 10 ~ 12wt%HNO
3, 6 ~ 8wt%H
2sO
4with the aqueous solution of 0.1 ~ 0.3wt%HF;
In operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, described second acid solution comprises 1 ~ 3wt%HCl, 2 ~ 4wt%HNO
3, 1 ~ 3wt%H
2sO
4, 6 ~ 8wt% phosphoric acid, 5 ~ 7wt% boric acid, 3 ~ 5wt% phosphorous acid and 10 ~ 12wt% lemon aqueous acid;
In operation 5) in, grinding adopts ball mill to operation 4) gained mineral carry out wet ball grinding, the inner bag surface of described ball mill is provided with acid-resistant layer, in described ball mill, ball milling device surface is equipped with acid-resistant layer, when grinding, in described ball mill, add the 3rd acid solution, described 3rd acid solution comprises 0.5 ~ 1wt% nitric acid, 0.5 ~ 1wt% hydrochloric acid, 2.5 ~ 3.5wt% phosphoric acid, 3 ~ 5wt% tartrate, 4 ~ 6wt% citric acid, 2 ~ 4wt% Phenylsulfonic acid, 2 ~ 4wt% acetic acid and 1 ~ 2wt% grass aqueous acid;
In operation 8) in, adopt the 4th acid solution pickling 1 hour, described 4th acid solution comprises 0.1 ~ 0.3wt% nitric acid, 0.5 ~ 1wt% phosphoric acid, 1 ~ 3wt% citric acid, 0.5 ~ 1.5wt% Phenylsulfonic acid, 0.5 ~ 1.5wt% acetic acid and 0.3 ~ 0.5wt% grass aqueous acid.
2. the production technique preparing high-purity quartz powder with quartzite according to claim 1, it is characterized in that, in operation 2) in, when pulverizing, add abrasive material and carry out scrubbing-desliming, described abrasive material comprises: the norbide of 20wt% ~ 25wt%, the silicon carbide of 30wt% ~ 40wt%, and all the other are corundum;
In operation 4) in, when shrend, in described second acid solution, be provided for the ultrasonic wave of shaking, described hyperacoustic frequency is 200 ~ 300Hz.
3. the production technique preparing high-purity quartz powder with quartzite according to claim 1, it is characterized in that, in operation 10) in, dry heat used from operation 3) in waste heat in calcining furnace, adherent on the outer wall of calcining furnace a thermal-arrest cabin is set, the cavity for air circulation is provided with in described thermal-arrest cabin, by arranging several gas blowers and insulated piping, freezing air is imported to described thermal-arrest cabin to heat, again by heating after warm air be directed into operation 10) in for dry, described insulated piping inwall is provided with one deck Kapton.
4. the production technique preparing high-purity quartz powder with quartzite according to claim 1, is characterized in that, operation 3) in, calcining temperature is 800 ~ 840 DEG C.
5. the production technique preparing high-purity quartz powder with quartzite according to claim 1, is characterized in that, operation 5) in, by operation 4) to be ground to grain diameter be 1800 orders to gained mineral.
6. the production technique preparing high-purity quartz powder with quartzite according to claim 1, is characterized in that, operation 6) in, magnetic separation employing magneticstrength is the magnetic plant of 500 ~ 15000 Gausses.
7. the production technique preparing high-purity quartz powder with quartzite according to claim 1, is characterized in that, operation 7) in, electrostatic separation employing voltage is the electrostatic separation equipment of 15 ~ 20 kilovolts.
8. the production technique preparing high-purity quartz powder with quartzite according to claim 1, is characterized in that, operation 2) in, quartzite being crushed to particle diameter is 0.5 ~ 2mm.
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| CN103663465A (en) * | 2013-11-21 | 2014-03-26 | 成都兴能新材料有限公司 | Quartz sand purifying technology |
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| CN104891971A (en) * | 2015-05-20 | 2015-09-09 | 南通路博石英材料有限公司 | Manufacturing method of high-purity quartz ceramic slurry |
| CN105271257A (en) * | 2015-11-27 | 2016-01-27 | 湖南鑫生矿冶废弃物综合利用科技有限公司 | Preparation method of quartz powder used for producing glass |
| CN105271257B (en) * | 2015-11-27 | 2017-03-29 | 湖南鑫生矿冶废弃物综合利用科技有限公司 | A kind of preparation method for producing glass silica flour |
| CN107661810A (en) * | 2016-07-30 | 2018-02-06 | 湖北永绍科技股份有限公司 | A kind of method that arkose quartzite prepares glass sand |
| CN107324342A (en) * | 2017-05-20 | 2017-11-07 | 合肥市惠科精密模具有限公司 | A kind of production technology of AMOLED base plate glass silica flour |
| CN107364870B (en) * | 2017-08-30 | 2019-11-12 | 宁晋松宫电子材料有限公司 | A kind of efficient impurity removal crushing process of fritting bottom seed crystal |
| CN107364870A (en) * | 2017-08-30 | 2017-11-21 | 宁晋松宫电子材料有限公司 | A kind of efficient impurity removal crushing process of fritting bottom seed crystal |
| CN107793035A (en) * | 2017-11-09 | 2018-03-13 | 新沂市宏润石英硅微粉有限公司 | A kind of preparation method of fused quartz powder |
| CN108046272A (en) * | 2017-12-20 | 2018-05-18 | 青海大学 | A kind of microwave radiation technology acidleach purifies SILICA FUME method |
| CN108866354A (en) * | 2018-06-20 | 2018-11-23 | 吉首大学 | A method of from high efficiency extraction vanadium in stone containing navajoite |
| CN108866354B (en) * | 2018-06-20 | 2020-12-04 | 吉首大学 | Method for efficiently extracting vanadium from vanadium-containing ore |
| 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 |
| CN112850718A (en) * | 2020-11-27 | 2021-05-28 | 东海县晶峰石英制品有限公司 | Preparation method of high-purity quartz sand processed by using quartz raw stone |
| CN112723363A (en) * | 2020-12-27 | 2021-04-30 | 江苏新达石英有限公司 | Coupling purification process for producing high-purity quartz powder |
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