CN117567023B - Production process for processing ultra-white sand by quartz sand - Google Patents
Production process for processing ultra-white sand by quartz sand Download PDFInfo
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- CN117567023B CN117567023B CN202410061628.6A CN202410061628A CN117567023B CN 117567023 B CN117567023 B CN 117567023B CN 202410061628 A CN202410061628 A CN 202410061628A CN 117567023 B CN117567023 B CN 117567023B
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- quartz sand
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 239000006004 Quartz sand Substances 0.000 title claims abstract description 156
- 239000004576 sand Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 title claims abstract description 19
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 44
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 34
- 239000003814 drug Substances 0.000 claims abstract description 26
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 22
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 22
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 22
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 22
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 17
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 17
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 13
- 235000010755 mineral Nutrition 0.000 claims abstract description 13
- 239000011707 mineral Substances 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000002834 transmittance Methods 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 13
- 238000012216 screening Methods 0.000 claims description 13
- 239000006148 magnetic separator Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 15
- 239000010453 quartz Substances 0.000 abstract description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 10
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 abstract description 5
- 230000008033 biological extinction Effects 0.000 abstract description 5
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 5
- 239000013078 crystal Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000004575 stone Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 238000007885 magnetic separation Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/02—Pretreated ingredients
- C03C1/022—Purification of silica sand or other minerals
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to the technical field of mineral surface treatment, and provides a production process for processing super-white sand by using quartz sand, which comprises the steps of preparing 0.5-2 permillage of sodium silicate, 5-7 permillage of sodium bicarbonate and 3-5 permillage of sodium fluoride (the mass ratio of the quartz sand) into a medicament, hydrolyzing the medicament into a solvent, fully mixing the solvent and the quartz sand, and then adding the solvent and the quartz sand into high-temperature phase-change equipment for high-temperature phase change, wherein the production process has the beneficial effects that: under the action of low-temperature sodium silicate, the crystal of the active quartz is converted into cristobalite, the phase angle is converted, the permeability is enhanced, the extinction effect is better, the macroscopic appearance is higher in whiteness, the micro-surface of the quartz sand is uneven under the action of high temperature and sodium bicarbonate, the protruding part is melted, the surface of the quartz sand tends to be smooth, the diffuse reflection is reduced, the light transmittance is increased, part of iron oxide is converted into ferric salt under the action of high temperature and sodium fluoride, the whiteness is increased, the variegation is reduced, and the ultra-white sand is obtained.
Description
Technical Field
The invention belongs to the technical field of mineral surface treatment, and particularly relates to a production process for processing ultra-white sand by quartz sand.
Background
The current artificial quartz stone production enterprises in China are over 500, the production line is over 1000, annual production quartz stone plates are about 1.2 hundred million square meters, annual production value is about 300 hundred million yuan, the demand of the global market for quartz stone products is growing at 20% -30% per year, under the drive of strong demand, the hot tide of a new production line is lifted in recent years, the goods value of the imported quartz stone plates in the U.S. of 2021 is about 17.2 hundred million dollars (about 110 hundred million RMB), the annual production line is increased by 45.8% compared with the previous year, and the demand of the quartz stone in the U.S. and overseas markets is strongly increased.
The demand of the artificial quartz stone plate industry in China for quartz sand (powder) is more than 500 ten thousand tons/year, the annual demand of the global quartz stone industry is about 1000 ten thousand tons, and Yinan quartz sand and Chaoyang quartz sand are important quartz sand origins in China and are required to be produced into ultra-white quartz sand so as to meet the use requirements of ultra-white glass and plates;
during quartz sand processing, quartz sand is directly crushed, ground, deironized and derusted to obtain a quartz sand finished product, and then screening and color selection are performed according to the purity and chromaticity of the quartz sand, however, the traditional quartz sand is used for producing the finished product, the obtained pure white quartz sand is less and cannot meet the market demand, and the whiteness of the ultra-white quartz sand is about 90.3, so that the price of the ultra-white quartz sand is always in a high position, therefore, the process for processing the quartz sand particles with the granularity of 32-120 meshes into the ultra-white quartz sand is provided, the whiteness of the ultra-white sand produced by Yinan quartz sand reaches 96.41, the whiteness of the ultra-white sand produced by Chaoyang quartz sand reaches 97.57, the market demand on the ultra-white quartz sand is met, and the production cost is reduced.
Disclosure of Invention
In view of the above, the invention provides a process for producing ultra-white sand by processing quartz sand, which comprises the steps of converting the crystal of active quartz into cristobalite under the action of low-temperature sodium silicate, converting the phase angle, enhancing the permeability, and having better extinction effect, wherein the macro-scale is higher in whiteness, the micro-surface of the quartz sand is rugged under the action of high temperature and sodium bicarbonate, the protruding part is melted, the surface of the quartz sand tends to be smooth, diffuse reflection is reduced, the light transmittance is increased, part of iron oxide is converted into ferric salt under the action of high temperature and sodium fluoride, the whiteness is increased, and the mottle is reduced, so that the ultra-white sand is obtained.
The technical proposal is as follows: a production process for processing ultra-white sand by quartz sand comprises the following production processes:
A. raw material selection: quartz sand with granularity of 32-120 meshes is selected, and the selected quartz sand is placed in a storage bin for standby;
B. screening: removing impurities, weak magnetic minerals and heavy minerals from the quartz sand in the step A to obtain screened quartz sand;
C. preparing a medicament: preparing 0.5-2 per mill of sodium silicate, 5-7 per mill of sodium bicarbonate and 3-5 per mill of sodium fluoride into a medicament according to the mass ratio of quartz sand, and hydrolyzing the medicament into a solvent, wherein the mass ratio of the solvent to the quartz sand is 1:10;
D. stirring and mixing: fully mixing the quartz sand in the step B with the solvent in the step C;
E. preheating: preheating the quartz sand mixed with the medicament in the step D, wherein the preheating temperature is 600 ℃;
F. high temperature phase transition: and E, adding the quartz sand preheated in the step E into high-temperature phase-change equipment to perform high-temperature phase change, wherein the temperature is 960-1060 ℃, and the time is 1-2 hours, so that the quartz sand with strong light transmittance, high whiteness and less impurities is obtained.
The technical scheme is that in the using process: firstly, under the action of low-temperature sodium silicate, the crystal of active quartz is converted into cristobalite, the phase angle is converted, the permeability is enhanced, the extinction effect is better, the macroscopic appearance is higher in whiteness, then under the action of high-temperature sodium bicarbonate, the micro-surface of the quartz sand is rugged, the protruding part is melted, the surface of the quartz sand tends to be smooth, the diffuse reflection is reduced, the light transmittance is increased, and finally, under the action of high temperature and sodium fluoride, part of iron oxide of the quartz sand is converted into ferric salt, so that the whiteness is increased, the variegation is reduced, and the ultra-white sand is obtained.
Preferably, the screening of the step B includes the steps of:
b1, adding quartz sand in a storage bin in the step A into a winnowing machine through a feeder and a belt conveyor, and screening dust and heavy ores in the quartz sand;
and B2, adding the quartz sand with the impurities and heavy ores removed in the step B1 into a ring magnetic separator to remove the weak magnetic minerals.
Preferably, the ring magnetic separator is a permanent magnet magnetic separator with the magnetic force of 17000GS, and the quartz sand raw material is repeatedly magnetically separated for 5-7 times.
Impurities, heavy minerals and magnetic substances in the quartz sand are removed through air separation and magnetic separation, so that quartz sand raw materials meeting requirements are obtained, and the quality of the quartz sand produced into ultra-white sand is improved.
Preferably, the medicament comprises quartz sand accounting for 0.5 per mill of sodium silicate, 5 per mill of sodium bicarbonate and 3 per mill of sodium fluoride according to the mass ratio of quartz sand.
Preferably, the medicament comprises 2 per mill of sodium silicate, 7 per mill of sodium bicarbonate and 5 per mill of sodium fluoride according to the mass ratio of quartz sand.
Preferably, the medicament comprises 1 per mill of sodium silicate, 6 per mill of sodium bicarbonate and 4 per mill of sodium fluoride according to the mass ratio of quartz sand.
Preferably, the stirring and mixing device in the step D adopts a double-screw stirrer, and the double-screw stirrer is obliquely arranged.
Preferably, the ultrawhite quartz sand obtained in the step F is added into cooling equipment for cooling, so as to obtain cooled ultrawhite quartz sand;
preferably, the cooled ultra-white quartz sand is put into a quartz sand swinging sieve for sieving, and non-standard particle size sand is removed to obtain the sieved ultra-white quartz sand;
preferably, the screened ultra-white quartz sand is subjected to color selection, and the variegated sand is removed, so that the finished quartz sand is obtained.
And cooling the produced ultra-white quartz sand, removing nonstandard grain size sand generated in the production process through a swinging screen, and screening off variegated sand through a color selector, thereby obtaining the ultra-white quartz sand and further improving the purity and the precision of the ultra-white quartz sand.
After the technical scheme is adopted, the invention has the beneficial effects that:
1. under the action of low-temperature sodium silicate, the crystal of the active quartz is converted into cristobalite, the phase angle is converted, the permeability is enhanced, the extinction effect is better, the macroscopic appearance is higher in whiteness, the micro surface of the quartz sand is uneven under the action of high temperature and sodium bicarbonate, the protruding part is melted, the surface of the quartz sand tends to be smooth, the diffuse reflection is reduced, the light transmittance is increased, part of iron oxide is converted into ferric salt under the action of high temperature and sodium fluoride, the whiteness is increased, the variegation is reduced, and the ultra-white sand is obtained;
2. removing impurities, heavy ores and magnetic substances in the quartz sand through air separation and magnetic separation, so that quartz sand raw materials meeting requirements are obtained, and the quality of the quartz sand produced into ultra-white sand is improved;
3. and cooling the produced ultra-white quartz sand, removing nonstandard grain size sand generated in the production process through a swinging screen, and screening off variegated sand through a color selector, thereby obtaining the ultra-white quartz sand and further improving the purity and the precision of the ultra-white quartz sand.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a process flow diagram of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 and 2, a production process for processing ultra-white sand by quartz sand comprises the following production processes:
A. raw material selection: quartz sand with granularity of 32-120 meshes is selected, and the selected quartz sand is placed in a storage bin for standby;
B. screening: removing impurities, weak magnetic minerals and heavy minerals from the quartz sand in the step A to obtain screened quartz sand;
C. preparing a medicament: preparing 0.5-2 per mill of sodium silicate, 5-7 per mill of sodium bicarbonate and 3-5 per mill of sodium fluoride into a medicament according to the mass ratio of quartz sand, and hydrolyzing the medicament into a solvent, wherein the mass ratio of the solvent to the quartz sand is 1:10;
D. stirring and mixing: fully mixing the quartz sand in the step B with the solvent in the step C;
E. preheating: preheating the quartz sand mixed with the medicament in the step D, wherein the preheating temperature is 600 ℃;
F. high temperature phase transition: and E, adding the quartz sand preheated in the step E into high-temperature phase-change equipment to perform high-temperature phase change, wherein the temperature is 960-1060 ℃, and the time is 1-2 hours, so that the quartz sand with strong light transmittance, high whiteness and less impurities is obtained.
Specific: and E, adding quartz sand mixed with the chemical into a preheating machine, adding the preheated quartz sand into high-temperature phase-change equipment through a material guide machine, wherein the preheating machine and the high-temperature phase-change equipment are both communicated with dust removal equipment, and the dust removal equipment of the high-temperature phase-change equipment is communicated with environmental protection equipment to purify and discharge generated waste gas.
In actual operation: firstly, under the action of low-temperature sodium silicate, the crystal of active quartz is converted into cristobalite, the phase angle is converted, the permeability is enhanced, the extinction effect is better, the macroscopic appearance is higher in whiteness, then under the action of high-temperature sodium bicarbonate, the micro-surface of the quartz sand is rugged, the protruding part is melted, the surface of the quartz sand tends to be smooth, the diffuse reflection is reduced, the light transmittance is increased, and finally, under the action of high temperature and sodium fluoride, part of iron oxide of the quartz sand is converted into ferric salt, so that the whiteness is increased, the variegation is reduced, and the ultra-white sand is obtained.
The screening of the step B comprises the following steps:
and B1, adding quartz sand in the storage bin in the step A into a winnowing machine through a feeder and a belt conveyor, screening impurities and heavy ores in the quartz sand, enabling the impurities to enter dust removing equipment, removing dust through the dust removing equipment, and adding the quartz sand led into the dust removing equipment into the ring-type magnetic separator unit.
And B2, adding the quartz sand with the impurities and heavy ores removed in the step B1 into a ring magnetic separator to remove the weak magnetic minerals.
The ring type magnetic separator is a permanent magnet magnetic separator with the magnetic force of 17000GS, and the quartz sand raw material is repeatedly magnetically separated for 5-7 times;
specific: the ring-type magnetic separator set and the winnowing equipment are all known technologies.
In actual operation: impurities, heavy minerals and magnetic substances in the quartz sand are removed through air separation and magnetic separation, so that quartz sand raw materials meeting requirements are obtained, and the quality of the quartz sand produced into ultra-white sand is improved.
And D, stirring and mixing equipment adopts a double-screw stirrer, and the double-screw stirrer is obliquely arranged.
Adding the ultrawhite quartz sand obtained in the step F into cooling equipment for cooling to obtain cooled ultrawhite quartz sand;
putting the cooled ultra-white quartz sand into a quartz sand swinging sieve for sieving, and removing non-standard particle size sand to obtain the sieved ultra-white quartz sand;
and (3) performing color selection on the screened ultra-white quartz sand, removing the variegated sand to obtain finished quartz sand, and packaging by a packaging machine.
Specific: the double-screw stirrer, the cooling equipment, the swinging sieve, the color selector and the high-temperature phase change equipment are all known technologies.
Example two
Based on the first embodiment: the medicament comprises 0.5 per mill of sodium silicate, 5 per mill of sodium bicarbonate and 3 per mill of sodium fluoride according to the mass ratio of quartz sand.
Example III
Based on the first embodiment: the medicament comprises 2 per mill of sodium silicate, 7 per mill of sodium bicarbonate and 5 per mill of sodium fluoride according to the mass ratio of quartz sand.
Example IV
Based on the first embodiment: the medicament comprises 1 per mill of sodium silicate, 6 per mill of sodium bicarbonate and 4 per mill of sodium fluoride according to the mass ratio of quartz sand.
Comparison experiment:
in comparison group 1, the quartz sand is produced and processed by adopting the traditional production process, wherein the traditional process is to directly crush, grind, remove iron and rust the quartz sand to obtain a quartz sand finished product, and then screen and color select according to the purity and chromaticity of the quartz sand.
In comparison group 2, the medicament comprises 0.4 per mill sodium silicate, 4.8 per mill sodium bicarbonate and 2.8 per mill sodium fluoride according to the mass ratio of quartz sand.
In comparison group 3, the medicament comprises 2.1 per mill sodium silicate, 7.2 per mill sodium bicarbonate and 5.1 per mill sodium fluoride according to the mass ratio of quartz sand.
In comparison group 4, the medicament comprises 1.1 per mill sodium silicate, 4.8 per mill sodium bicarbonate and 3.8 per mill sodium fluoride according to the mass ratio of quartz sand.
In comparison group 5, the medicament comprises 1.1 per mill sodium silicate, 5.9 per mill sodium bicarbonate and 4.5 per mill sodium fluoride according to the mass ratio of quartz sand.
The traditional process is that quartz sand is directly crushed, ground, deironing and derusting to obtain quartz sand finished products, and then screening and color selection are carried out according to the purity and chromaticity of the quartz sand.
Selecting a Korean quartz sand raw material with relatively uniform components, wherein the granularity is 32-120 meshes, numbering the raw material, and performing at least 3 experiments;
the performance indexes of the quartz sand are respectively measured, and the following table is provided:
selecting a relatively uniform-composition Yinan quartz sand raw material, wherein the granularity is 32-120 meshes, numbering the raw material, and performing at least 3 experiments;
the performance indexes of the quartz sand are respectively measured, and the following table is provided:
while the basic principles and main features of the present invention and advantages of the present invention have been shown and described, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims and their equivalents.
Claims (10)
1. The production process for processing the ultra-white sand by using the quartz sand is characterized by comprising the following production processes:
A. raw material selection: quartz sand with granularity of 32-120 meshes is selected, and the selected quartz sand is placed in a storage bin for standby;
B. screening: removing impurities, weak magnetic minerals and heavy minerals from the quartz sand in the step A to obtain screened quartz sand;
C. preparation of the medicament: preparing 0.5-2 per mill of sodium silicate, 5-7 per mill of sodium bicarbonate and 3-5 per mill of sodium fluoride into a medicament according to the mass ratio of quartz sand, and hydrolyzing the medicament into a solvent, wherein the mass ratio of the solvent to the quartz sand is 1:10;
D. stirring and mixing: fully mixing the quartz sand in the step B with the solvent in the step C;
E. preheating: preheating the quartz sand mixed with the medicament in the step D, wherein the preheating temperature is 600 ℃;
F. high temperature phase transition: and E, adding the quartz sand preheated in the step E into high-temperature phase-change equipment to perform high-temperature phase change, wherein the temperature is 960-1060 ℃, and the time is 1-2 hours, so that the quartz sand with strong light transmittance, high whiteness and less impurities is obtained.
2. The process for producing ultra-white sand for quartz sand processing according to claim 1, wherein the screening in the step B comprises the following steps:
b1, adding quartz sand in a storage bin in the step A into a winnowing machine through a feeder and a belt conveyor, and screening dust and heavy ores in the quartz sand;
and B2, adding the quartz sand with the impurities and heavy ores removed in the step B1 into a ring magnetic separator to remove the weak magnetic minerals.
3. The process for producing ultra-white sand by quartz sand processing according to claim 2, wherein the ring-type magnetic separator is a permanent magnet magnetic separator with magnetic force of 17000GS, and the quartz sand raw material is repeatedly magnetically separated for 5-7 times.
4. The process for producing the quartz sand processing ultra-white sand according to claim 1, wherein the agent comprises 0.5 per mill of sodium silicate, 5 per mill of sodium bicarbonate and 3 per mill of sodium fluoride according to the mass ratio of the quartz sand.
5. The process for producing the ultra-white sand by processing the quartz sand according to claim 1, wherein the medicament comprises 2 per mill of sodium silicate, 7 per mill of sodium bicarbonate and 5 per mill of sodium fluoride according to the mass ratio of the quartz sand.
6. The process for producing the ultra-white sand by processing the quartz sand according to claim 1, wherein the medicament comprises 1 per mill of sodium silicate, 6 per mill of sodium bicarbonate and 4 per mill of sodium fluoride according to the mass ratio of the quartz sand.
7. The process for producing ultra-white sand for quartz sand processing according to claim 1, wherein the stirring and mixing equipment in the step D is a stirring and guiding machine, the stirring and guiding machine is a double-screw stirrer, and the double-screw stirrer is obliquely arranged.
8. The process for producing the ultra-white sand for quartz sand processing according to claim 1, wherein the ultra-white quartz sand obtained in the step F is added into a cooling device for cooling, and the cooled ultra-white quartz sand is obtained.
9. The process for producing ultra-white sand for quartz sand processing according to claim 8, wherein the cooled ultra-white quartz sand is put into a quartz sand swinging sieve for sieving, and non-standard grain size sand is removed to obtain the sieved ultra-white quartz sand.
10. The process for producing the ultra-white sand for quartz sand processing according to claim 9, wherein the screened ultra-white quartz sand is subjected to color selection, and the variegated sand is removed to obtain the finished quartz sand.
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