CN104556047B - A kind of production technology preparing high-purity quartz powder body with quartzite - Google Patents
A kind of production technology preparing high-purity quartz powder body with quartzite Download PDFInfo
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- CN104556047B CN104556047B CN201410815651.6A CN201410815651A CN104556047B CN 104556047 B CN104556047 B CN 104556047B CN 201410815651 A CN201410815651 A CN 201410815651A CN 104556047 B CN104556047 B CN 104556047B
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Abstract
This case discloses a kind of production technology preparing high-purity quartz powder body with quartzite, including following operation: 1) soak；2) pulverize；3) calcining；4) shrend；5) grind；6) magnetic separation；7) electrostatic separation；8) pickling；9) deionized water cleans；10) dry.This case uses gradient acidity stepwise elution impurity particle; strong acid is first used to soak to remove the impurity on quartzite surface before pulverizing; when shrend; in employing, strong acid continuation removes and is wrapped in the metal impurities within quartzite; when grinding; for protection equipment from corrosion; in employing, weak acid is grinding remove impurity simultaneously; acid solution and the contact probability of impurity and contact area is increased by ball mill; thus increase dust removal rate; when last pickling, weak acid is used to remove a small amount of remaining unreacted contaminant particles completely further；The waste heat produced when this case simultaneously is by calcining is collected, and this heat is used for last being dried, and had both reduced energy consumption, and had decreased again the production cost of enterprise.
Description
Technical field
The present invention relates to natural minerals purifying technique, especially relate to the purifying technique of high-purity quartz, special
Do not relate to a kind of production technology preparing high-purity quartz powder body with quartzite.
Background technology
High-purity quartz powder body has the physicochemical characteristics of excellence, hardness is high, high temperature resistant, corrosion-resistant,
Conductivity is low, wave transparent performance is good, stable performance.Particularly in it molecular chain structure, crystal shape and
Lattice variations rule so that it is the thermal coefficient of expansion having is little, high-insulation, piezoelectric effect, resonance effect
And the optical characteristics of its uniqueness, in many high-tech area such as Novel electric light sources, microelectronics, high insulation
Sealing-in, Aero-Space, the field such as defence and military be increasingly widely applied.
Along with the new high-tech industries such as optical fiber industry, electronics industry, microelectronics industry develop rapidly, to height
The requirement of pure superfine quartz powder is more and more higher, and demand is the most increasing.The making of quartz powder body at present
Raw material mostly is high-quality natural quartz mineral aggregate, and its technological process is: raw material → coarse crushing → pickling → washing → dry
Dry → dry method superfine grinding → classification → product.But the quartzy raw ore quality of all parts of the country differs, impurity
Content difference is very big, and the purity of the high pure and ultra-fine quartz powder body that employing traditional handicraft prepares is difficult to stable.With
Time, the processing of quartz products is huge to the consumption of the energy, needs substantial amounts of electric energy and heat in traditional handicraft
Can, this needs to consume substantial amounts of coal and natural gas；Meanwhile, in the technique that conventional dry is pulverized, carefully
Little dust can bring expendable physiological damage to operator.How to develop the purification of environmental protection
How technique, improve production efficiency, how to reduce the energy consumption in production technology, dust and energy regenerating again
The problems such as utilization, become focus and the difficult point of business research instantly.
Summary of the invention
For above-mentioned weak point, it is an object of the invention to provide a kind of energy-conserving and environment-protective with quartzite system
The production technology of standby high-purity quartz powder body.
Technical scheme is summarized as follows:
A kind of production technology preparing high-purity quartz powder body with quartzite, including following operation: 1) soak；
2) pulverize；3) calcining；4) shrend；5) grind；6) magnetic separation；7) electrostatic separation；8) pickling；9)
Deionized water cleans；10) dry；
Wherein, in operation 1) in, quartzite is immersed in the first acid solution 0.5～1 hour, described
One acid solution is to comprise 3～5wt%HCl, 10～12wt%HNO3, 6～8wt%H2SO4With 0.1～0.3wt%HF
Aqueous solution；
In operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, described second acid
Liquid is to comprise 1～3wt%HCl, 2～4wt%HNO3, 1～3wt%H2SO4, 6～8wt% phosphoric acid, 5～7wt%
Boric acid, 3～5wt% phosphorous acid and 10～12wt% Fructus Citri Limoniae aqueous acids；
In operation 5) in, grinding and use ball mill to operation 4) gained mineral carry out wet ball grinding, described
The inner bag surface of ball mill is provided with acid-resistant layer, and in described ball mill, ball milling device surface is equipped with acid-resistant layer,
When grinding, adding the 3rd acid solution in described ball mill, described 3rd acid solution is to comprise 0.5～1wt%
Nitric acid, 0.5～1wt% hydrochloric acid, 2.5～3.5wt% phosphoric acid, 3～5wt% tartaric acid, 4～6wt% citric acid,
2～4wt% benzenesulfonic acids, 2～4wt% acetic acid and 1～2wt% grass aqueous acid；
In operation 8) in, use the 4th acid solution pickling 1 hour, described 4th acid solution be comprise 0.1～
0.3wt% nitric acid, 0.5～1wt% phosphoric acid, 1～3wt% citric acid, 0.5～1.5wt% benzenesulfonic acid, 0.5～
1.5wt% acetic acid and 0.3～0.5wt% grass aqueous acid.
Preferably, the described production technology preparing high-purity quartz powder body with quartzite, in operation 2)
In, when pulverizing, adding abrasive material and carry out scrubbing-desliming, described abrasive material includes: the carbon of 20wt%～25wt%
Changing boron, the carborundum of 30wt%～40wt%, remaining is corundum；
In operation 4) in, when shrend, in described second acid solution, provide the ultrasound wave for concussion,
The frequency of described ultrasound wave is 200～300Hz.
Preferably, the described production technology preparing high-purity quartz powder body 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
One thermal-arrest cabin is set, is provided with the cavity for air circulation in described thermal-arrest cabin, by arranging several
Aerator and insulated piping, import to cold air described thermal-arrest cabin and heat, then by the heat after heating
Air is directed into operation 10) in be used for drying, it is thin that described insulated piping inwall is provided with a strata acid imide
Film.
Preferably, the described production technology preparing high-purity quartz powder body with quartzite, operation 3)
In, calcining heat is 800～840 DEG C.
Preferably, the described production technology preparing high-purity quartz powder body with quartzite, operation 5)
In, by operation 4) to be ground to grain diameter be 1800 mesh to gained mineral.
Preferably, the described production technology preparing high-purity quartz powder body with quartzite, operation 6)
In, the magnetic plant that magnetic separation uses magnetic field intensity to be 500～15000 Gausses.
Preferably, the described production technology preparing high-purity quartz powder body with quartzite, operation 7)
In, the electrostatic separation equipment that electrostatic separation uses voltage to be 15～20 kilovolts.
Preferably, the described production technology preparing high-purity quartz powder body with quartzite, operation 2)
In, it is 0.5～2mm that quartzite is crushed to particle diameter.
The invention has the beneficial effects as follows:
1) this case uses gradient acidity stepwise elution impurity particle, first uses strong acid to soak to remove before pulverizing
Removing thin film ferrum and other metal impurities on quartzite surface, when shrend, in employing, strong acid continues to remove bag
It is rolled in the metal impurities within quartzite, when grinding, for protection equipment from corrosion, weak acid in employing
Grind remove impurity simultaneously, increase acid solution and the contact probability of impurity and contact area by ball mill, thus
Increase dust removal rate, when final step pickling, use weak acid to remove further a small amount of remaining the most anti-
Should contaminant particles completely.
1) coarse crushing and scrubbing-desliming are incorporated in an operation, by adding compounding abrasive material so that
The thin film ferrum do not cleaned by acid solution on quartzite surface while coarse crushing and mud Impurity removal are clean, both carry
High production efficiency, reduces again energy consumption；
2) when shrend, the structure more loosened for the mineral after making calcining, simultaneously in order to improve
Acid solution and the reaction rate of metal impurities, have employed ultrasound wave in order to shake, it is ensured that the loose spy of mineral structure
While property, improve dust removal rate, save time cost；
3) waste heat produced time by calcining is collected, and this heat is used for last being dried, and both reduces
Energy consumption, decreases again the production cost of enterprise；
4) by the modified model washing liquid remove impurity stage by stage of stepwise gradient formula, tradition high concentration acid solution pair is reduced
The corrosion of equipment, meanwhile, adds acid solution and the contact probability of impurity and time, further increases and remove
Miscellaneous effect, thus ensure that the high-purity of product.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, to make those skilled in the art join
Book word can be implemented according to this as directed.
This case proposes a kind of production technology preparing high-purity quartz powder body with quartzite, including following operation:
1) soak；2) pulverize；3) calcining；4) shrend；5) grind；6) magnetic separation；7) electrostatic separation；8)
Pickling；9) deionized water cleans；10) dry；
Wherein, in operation 1) in, quartzite is immersed in the first acid solution 0.5～1 hour, the first acid
Liquid is to comprise 3～5wt%HCl, 10～12wt%HNO3, 6～8wt%H2SO4With 0.1～0.3wt%HF water
Solution；The purpose soaked is to remove the metal impurities on quartzite surface as far as possible, to improve crush efficiency,
Reduce the energy consumption pulverized, the pressure of follow-up pickling impurity removal can be alleviated simultaneously.Because the metal on quartzite surface is miscellaneous
Matter is the most most stable of, it is therefore desirable to stronger acidity could remove, therefore in the first acid formula
Each content of material should be limited, if acid too high, then the acid solution being adsorbed in quartzite surface can be to follow-up
Equipment causes the erosion of unrepairable, if acid too low, then the DeGrain of this operation remove impurity, causes
This operation lost efficacy, and caused the waste in the energy and man-hour.
In operation 2) in, pulverize time, add abrasive material carry out scrubbing-desliming, this abrasive material includes: 20wt%～
The boron carbide of 25wt%, the carborundum of 30wt%～40wt%, remaining is corundum；The proportioning of abrasive material should be defined,
Set for the mean specific gravity of mud impurity in natural quartz rock during this proportioning, if beyond above-mentioned joining
Ratio scope, will cause mud impurity in natural quartz rock cannot be completely removed totally.Additionally, operation 2)
In, it is 0.5～2mm that quartzite is preferably crushed to particle diameter, in order to the polish of follow-up equipment.
Operation 3) in, calcining heat is preferably 800～840 DEG C, and it is little that calcination time is preferably 0.5～1.5
Time.Owing to this case is improved in other operations, therefore calcining heat can less than traditional 900～
The calcining heat of 1100 DEG C, meets the requirement of energy-conserving and environment-protective.
In operation 4) in, gained mineral after calcining being immersed the second acid solution and carries out shrend, the second acid solution is
Comprise 1～3wt%HCl, 2～4wt%HNO3, 1～3wt%H2SO4, 6～8wt% phosphoric acid, 5～7wt% boric acid,
3～5wt% phosphorous acid and 10～12wt% Fructus Citri Limoniae aqueous acids；Additionally, when shrend, can be to the second acid
Thering is provided the ultrasound wave for concussion in liquid, the frequency of ultrasound wave is 200～300Hz.The effect of shrend be by
Mineral after calcining are after chilling, it is thus achieved that loose structure, are beneficial to follow-up grinding, can significantly reduce
Energy consumption, and improve grinding efficiency.The second acid solution used by shrend can be at the formation phase of mineral hole and mineral
Interior metal impurities carry out acid-base reaction, by thinking haptoreaction with large-area hole, can pickling be removed
Miscellaneous effect improves at least 10%, and the ultrasound wave simultaneously increased can improve soda acid with the second acid solution coordinated
The speed of reaction, therefore, in the second acid solution, the content of each component should be limited, if they content are on the low side,
Then cause the metal impurities in mineral hole to remove in a large number, thus have impact on the purity of product；If containing
Measure higher, then can suppress the growth of mineral hole, follow-up milling apparatus be caused corrosion simultaneously.Equally
, in order to match with the second acid solution used by shrend, the frequency range of ultrasound wave also should be limited.Frequently
Rate is too high can accelerate the acid solution corrosion to equipment, and underfrequency is also unable to reach the effect of remove impurity.
In operation 5) in, grinding and use ball mill to operation 4) gained mineral carry out wet ball grinding, ball milling
The inner bag surface of machine is provided with acid-resistant layer, and this acid-resistant layer can be quartz layer or silicon carbide-containing, the quartz of boron carbide
Layer, in ball mill, ball milling device surface also must be provided with acid-resistant layer, when grinding, adds the in ball mill
Three acid solutions, the 3rd acid solution is to comprise 0.5～1wt% nitric acid, 0.5～1wt% hydrochloric acid, 2.5～3.5wt% phosphorus
Acid, 3～5wt% tartaric acid, 4～6wt% citric acid, 2～4wt% benzenesulfonic acid, 2～4wt% acetic acid and 1～
2wt% grass aqueous acid；Ball milling is by process broken for mineral, is with acid solution remove impurity in the process
On good opportunity, acid solution is sufficiently mixed with impurity and contacts, and reaction contact surface is big, and time of contact is long, and remove impurity is imitated
The most splendid, it is contemplated that the impact on equipment, the pickling of following preceding processes, this operation only needs medium on the weak side
Acidity, therefore, each constituent content of the 3rd acid solution should be limited, if each constituent content is bigger than normal,
Then cause acid rising, equipment is caused corrosion；If each constituent content is less than normal, then can cause impurity-eliminating effect
The best, bring impact to the final purity of product.Additionally, operation 5) in, preferably by operation 4) gained
Mineral grind until grain diameter is 1800 mesh.
Operation 6) in, magnetic separation uses magnetic field intensity to be the magnetic plant of 500～15000 Gausses, and just two
Plant magnetic field and can effectively remove ferrum in the soil of ore deposit, ferrotianium class ferromagnetism and weak magnetic impurity.
Operation 7) in, the electrostatic separation equipment that electrostatic separation uses voltage to be 15～20 kilovolts, due to operation
7), time, the tenor in mineral is the lowest, so the voltage of electrostatic separation is less than the voltage in traditional handicraft,
It is for removing the non magnetic ore deposit in the soil of ore deposit, such as: the impurity such as potassium, albite, aluminum, Muscovitum.
In operation 8) in, using the 4th acid solution pickling 1 hour, the 4th acid solution is to comprise 0.1～0.3wt%
Nitric acid, 0.5～1wt% phosphoric acid, 1～3wt% citric acid, 0.5～1.5wt% benzenesulfonic acid, 0.5～1.5wt%
Acetic acid and 0.3～0.5wt% grass aqueous acid.Operation 8) effect be also not to be completely dissolved remaining
Metal impurities remove, therefore it is the highest to acid requirement of strength, preferably uses some inorganic and has
Machine weak acid, owing to containing polytype acid in compounding acid solution, it can remove a greater variety of metal
Microgranule and alkaline impurities, 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 equipment is caused unnecessary damage simultaneously；
If content is too low, then tiny metal particle may be caused cannot to be reduced final quartz powder body by Ex-all
Purity.
In operation 10) in, dry heat used from operation 3) in waste heat in calcining furnace, in calcining
Adherent on the outer wall of stove a thermal-arrest cabin is set, is provided with the cavity for air circulation in thermal-arrest cabin, passes through
Several aerators and insulated piping are set, cold air are imported to thermal-arrest cabin and heats, then will heating
After hot-air be directed into operation 10) in be used for drying, and circulate with this.Insulated piping inwall is provided with
One strata imide membrane.
Use content >=99.95% of silicon dioxide in the quartzy powder body that above-mentioned technique prepares.
Embodiment 1
A kind of production technology preparing high-purity quartz powder body with quartzite, including following operation: 1) soak；
2) pulverize；3) calcining；4) shrend；5) grind；6) magnetic separation；7) electrostatic separation；8) pickling；9)
Deionized water cleans；10) dry；
Wherein, in operation 1) in, quartzite is immersed in the first acid solution 0.5 hour, the first acid solution
It is to comprise 3wt%HCl, 10wt%HNO3, 6wt%H2SO4Aqueous solution with 0.1wt%HF.
In operation 2) in, when pulverizing, adding abrasive material and carry out scrubbing-desliming, this abrasive material includes: 20wt%
Boron carbide, the carborundum of 30wt% and the corundum of 50wt%.It is 0.5～2mm that quartzite is crushed to particle diameter.
Operation 3) in, calcining heat is 800 DEG C, and calcination time is 0.5 hour.
In operation 4) in, gained mineral after calcining being immersed the second acid solution and carries out shrend, the second acid solution is
Comprise 1wt%HCl, 2wt%HNO3, 1wt%H2SO4, 6wt% phosphoric acid, 5wt% boric acid, 3wt% phosphorous acid and
10wt% Fructus Citri Limoniae aqueous acid；Additionally, when shrend, provide ultrasonic for shake in the second acid solution
Ripple, the frequency of ultrasound wave is 200Hz.
In operation 5) in, grinding and use ball mill to operation 4) gained mineral carry out wet ball grinding, ball milling
The inner bag surface of machine is provided with acid-resistant layer, and in ball mill, ball milling device surface also must be provided with acid-resistant layer, is grinding
Time, in ball mill add the 3rd acid solution, the 3rd acid solution be comprise 0.5wt% nitric acid, 0.5wt% hydrochloric acid,
2.5wt% phosphoric acid, 3wt% tartaric acid, 4wt% citric acid, 2wt% benzenesulfonic acid, 2wt% acetic acid and 1wt% oxalic acid
Aqueous solution.Further, in operation 5) in, by operation 4) gained mineral grind until grain diameter reaches
1800 mesh.
Operation 6) in, the magnetic plant that magnetic separation uses magnetic field intensity to be 500～15000 Gausses.
Operation 7) in, the electrostatic separation equipment that electrostatic separation uses voltage to be 15 kilovolts.
Operation 8) in, using the 4th acid solution pickling 1 hour, the 4th acid solution is to comprise 0.1wt% nitric acid, 0.5wt%
Phosphoric acid, 1wt% citric acid, 0.5wt% benzenesulfonic 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, in calcining
Adherent on the outer wall of stove a thermal-arrest cabin is set, is provided with the cavity for air circulation in thermal-arrest cabin, passes through
Several aerators and insulated piping are set, cold air are imported to thermal-arrest cabin and heats, then will heating
After hot-air be directed into operation 10) in be used for drying, and circulate with this.Insulated piping inwall is provided with
One strata imide membrane.
Embodiment 2
A kind of production technology preparing high-purity quartz powder body with quartzite, including following operation: 1) soak；
2) pulverize；3) calcining；4) shrend；5) grind；6) magnetic separation；7) electrostatic separation；8) pickling；9)
Deionized water cleans；10) dry；
Wherein, in operation 1) in, quartzite being immersed in the first acid solution 1 hour, the first acid solution is
Comprise 5wt%HCl, 12wt%HNO3, 8wt%H2SO4Aqueous solution with 0.3wt%HF.
In operation 2) in, when pulverizing, adding abrasive material and carry out scrubbing-desliming, this abrasive material includes: 25wt%
Boron carbide, the carborundum of 40wt% and the corundum of 35wt%.Additionally, operation 2) in, by quartz rock dust
Being broken to particle diameter is 0.5～2mm.
Operation 3) in, calcining heat is 840 DEG C, and calcination time is 1.5 hours.
Operation 4) in, gained mineral after calcining being immersed the second acid solution and carries out shrend, the second acid solution is bag
Containing 3wt%HCl, 4wt%HNO3, 3wt%H2SO4, 8wt% phosphoric acid, 7wt% boric acid, 5wt% phosphorous acid and 12wt%
Fructus Citri Limoniae aqueous acid；Additionally, when shrend, provide the ultrasound wave for concussion in the second acid solution,
The frequency of ultrasound wave is 300Hz.
In operation 5) in, grinding and use ball mill to operation 4) gained mineral carry out wet ball grinding, ball milling
The inner bag surface of machine is provided with acid-resistant layer, and in ball mill, ball milling device surface also must be provided with acid-resistant layer, is grinding
Time, in ball mill, adding the 3rd acid solution, the 3rd acid solution is to comprise 1wt% nitric acid, 1wt% hydrochloric acid, 3.5wt%
Phosphoric acid, 5wt% tartaric acid, 6wt% citric acid, 4wt% benzenesulfonic acid, 4wt% acetic acid and 2wt% oxalic acid water-soluble
Liquid.Further, in operation 5) in, by operation 4) gained mineral grind until grain diameter reaches 1800
Mesh.
Operation 6) in, the magnetic plant that magnetic separation uses magnetic field intensity to be 500～15000 Gausses.
Operation 7) in, the electrostatic separation equipment that electrostatic separation uses voltage to be 20 kilovolts.
In operation 8) in, use the 4th acid solution pickling 1 hour, the 4th acid solution be comprise 0.3wt% nitric acid,
1wt% phosphoric acid, 3wt% citric acid, 1.5wt% benzenesulfonic 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, in calcining
Adherent on the outer wall of stove a thermal-arrest cabin is set, is provided with the cavity for air circulation in thermal-arrest cabin, passes through
Several aerators and insulated piping are set, cold air are imported to thermal-arrest cabin and heats, then will heating
After hot-air be directed into operation 10) in be used for drying, and circulate with this.Insulated piping inwall is provided with
One strata imide membrane.
Following table is the purity analysis (wt%) of the quartzy powder body using the technique of embodiment 1 and 2 to obtain:
| SiO2 | Fe2O3 | Al2O3 | CaO | MgO | K | Na | TiO2 | WO3 | SnO2 | 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 disclosed as above, but it is not restricted to description and embodiment party
Listed utilization in formula, it can be applied to various applicable the field of the invention completely, for being familiar with ability
For the personnel in territory, be easily achieved other amendment, therefore without departing substantially from claim and etc. homotype
Enclosing under limited general concept, the present invention is not limited to specific details.
Claims (8)
1. prepare a production technology for high-purity quartz powder body with quartzite, including following operation: 1)
Soak；2) pulverize；3) calcining；4) shrend；5) grind；6) magnetic separation；7) electrostatic separation；8) acid
Wash；9) deionized water cleans；10) dry；
Wherein, in operation 1) in, quartzite is immersed in the first acid solution 0.5～1 hour, described
One acid solution is to comprise 3～5wt%HCl, 10～12wt%HNO3, 6～8wt%H2SO4With 0.1～0.3wt%HF
Aqueous solution；
In operation 4) in, gained mineral after calcining are immersed the second acid solution and carries out shrend, described second acid
Liquid is to comprise 1～3wt%HCl, 2～4wt%HNO3, 1～3wt%H2SO4, 6～8wt% phosphoric acid, 5～7wt%
Boric acid, 3～5wt% phosphorous acid and 10～12wt% Fructus Citri Limoniae aqueous acids；
In operation 5) in, grinding and use ball mill to operation 4) gained mineral carry out wet ball grinding, described
The inner bag surface of ball mill is provided with acid-resistant layer, and in described ball mill, ball milling device surface is equipped with acid-resistant layer,
When grinding, adding the 3rd acid solution in described ball mill, described 3rd acid solution is to comprise 0.5～1wt%
Nitric acid, 0.5～1wt% hydrochloric acid, 2.5～3.5wt% phosphoric acid, 3～5wt% tartaric acid, 4～6wt% citric acid,
2～4wt% benzenesulfonic acids, 2～4wt% acetic acid and 1～2wt% grass aqueous acid；
In operation 8) in, use the 4th acid solution pickling 1 hour, described 4th acid solution be comprise 0.1～
0.3wt% nitric acid, 0.5～1wt% phosphoric acid, 1～3wt% citric acid, 0.5～1.5wt% benzenesulfonic acid, 0.5～
1.5wt% acetic acid and 0.3～0.5wt% grass aqueous acid.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
It is characterised by, in operation 2) in, when pulverizing, add abrasive material and carry out scrubbing-desliming, described abrasive material bag
Including: the boron carbide of 20wt%～25wt%, the carborundum of 30wt%～40wt%, remaining is corundum.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
Be characterised by, 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, is provided with in described thermal-arrest cabin for air circulation
Cavity, by arranging several aerators and insulated piping, imports to cold air described thermal-arrest cabin and carries out
Heating, then will heating after hot-air be directed into operation 10) in be used for drying, described insulated piping inwall
It is provided with a strata imide membrane.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
It is characterised by, operation 3) in, calcining heat is 800～840 DEG C.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
It is characterised by, operation 5) in, by operation 4) to be ground to grain diameter be 1800 mesh to gained mineral.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
It is characterised by, operation 6) in, the magnetic plant that magnetic separation uses magnetic field intensity to be 500～15000 Gausses.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
It is characterised by, operation 7) in, the electrostatic separation equipment that electrostatic separation uses voltage to be 15～20 kilovolts.
The production technology preparing high-purity quartz powder body with quartzite the most according to claim 1, its
It is characterised by, operation 2) in, it is 0.5～2mm that quartzite is crushed to particle diameter.
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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 |
| 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 |
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| 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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| JP3415382B2 (en) * | 1996-12-25 | 2003-06-09 | トヨタ自動車株式会社 | Method for producing high-purity silicon powder |
| CN103539133B (en) * | 2013-11-05 | 2015-07-22 | 武汉理工大学 | Method for preparing ultralow-metallic-element ultrahigh-purity quartz through mixed acid hot-pressing leaching reaction |
| CN103663469B (en) * | 2013-11-21 | 2016-01-20 | 成都兴能新材料有限公司 | Quartz sand purifying technique |
| CN103663465A (en) * | 2013-11-21 | 2014-03-26 | 成都兴能新材料有限公司 | Quartz sand purifying technology |
| CN103613102B (en) * | 2013-12-04 | 2015-07-08 | 南京工业大学东海先进硅基材料研究院 | Process for preparing ultra-pure quartz sand from silica raw material |
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