CN114392836B - Processing technology of high-purity quartz sand - Google Patents
Processing technology of high-purity quartz sand Download PDFInfo
- Publication number
- CN114392836B CN114392836B CN202111544152.4A CN202111544152A CN114392836B CN 114392836 B CN114392836 B CN 114392836B CN 202111544152 A CN202111544152 A CN 202111544152A CN 114392836 B CN114392836 B CN 114392836B
- Authority
- CN
- China
- Prior art keywords
- quartz sand
- sand
- temperature
- furnace
- cleaning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a processing technology of high-purity quartz sand, which comprises the following steps of S1, firstly cleaning sand and stone, uniformly screening, and leaching the quartz sand by microorganisms after the completion of the cleaning; s2, calcining the quartz sand, and performing a flotation process after the calcining; s3, acid leaching quartz sand; s4, magnetically separating quartz sand; s5, performing secondary cleaning and drying treatment to finish the processing. In the traditional purification process, the method of biological leaching is added, so that the iron content in quartz sand can be effectively reduced, the whole treatment process is simple and environment-friendly, and the purification effect is good.
Description
Technical Field
The invention relates to the technical field of quartz sand processing, in particular to a processing technology of high-purity quartz sand.
Background
The quartz sand is quartz particles formed by crushing and processing quartz stone. Quartz stone is a nonmetallic mineral, is a silicate mineral with hardness, wear resistance and stable chemical property, and the main mineral component is SiO2. The quartz sand is milky white or colorless semitransparent, has the Mohs hardness of 7, is an important industrial mineral raw material and is a non-chemical dangerous article, and is widely used in industries of glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasive materials, filter materials and the like. The unique physical and chemical properties of quartz sand make quartz sand possess important roles in aviation, aerospace, electronics, machinery and today's fast developing IT industry, especially the inherent molecular chain structure, crystal shape and lattice change rule, so that the quartz sand has the advantages of high temperature resistance, small thermal expansion coefficient, high insulation, corrosion resistance, piezoelectric effect, resonance effect and unique optical properties, and plays an increasingly important role in a plurality of high-tech products.
In the processing process of quartz sand, the quartz sand is rich in more impurities, so that the purity of the quartz sand is insufficient to influence the subsequent processing, high-precision purification is needed, the traditional purification process is low in efficiency, and the impurity filtration of the purified quartz sand is higher. For this purpose, a corresponding technical solution is required to be designed to solve the existing technical problems.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a processing technology of high-purity quartz sand, which solves the problems that: in the processing process of quartz sand, the quartz sand is rich in more impurities, so that the purity of the quartz sand is insufficient to influence the subsequent processing, high-precision purification is needed, the efficiency of the traditional purification process is low, and the impurity filtering of the purified quartz sand is high.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a process for preparing high-purity quartz sand includes such steps as proportionally mixing quartz sand with high-purity quartz sand,
s1, firstly, cleaning sand and stone, uniformly screening, and leaching quartz sand by microorganisms after the sand and stone are finished;
s2, calcining the quartz sand, and performing a flotation process after the calcining;
s3, acid leaching quartz sand;
s4, magnetically separating quartz sand;
s5, performing secondary cleaning and drying treatment to finish the processing.
As a further preferable mode of the invention, in the step S1, the pH of the sand is regulated to be 6.5, and the thiobacillus ferrooxidans liquid is cultivated, wherein the amount of the thiobacillus ferrooxidans in the thiobacillus ferrooxidans liquid is 110/mL, and the inoculation amount is 6.5%; sterilizing the stabilized sand, sterilizing by adopting ultraviolet lamp and high temperature, pouring the pre-cultured thiobacillus ferrooxidans solution into the sand for mixing, stirring in the mixing process, controlling the stirring rotation speed to be 220-280r/min, controlling the temperature to be normal temperature, stirring for 25min, sealing after the stirring is completed, standing for 12h at normal temperature, finally pouring clear water, and cleaning and filtering the leached film iron.
As a further preferable mode of the invention, in the step S2, firstly, the mica is floated, then the iron-containing mineral is floated, and finally the feldspar is floated, firstly, the pH of ore pulp is regulated to 3-4 by sulfuric acid, the mica is floated by using an amine collector, then the pH of ore pulp is regulated to 4-5 by using hydrochloric acid, the iron-containing mineral is floated by using sulfonated petroleum as a collector, finally, the pH is regulated to 2-3 by using hydrofluoric acid, and the feldspar is floated by using amine as a collector.
As a further preferable mode of the present invention, in step S3, HNO having a concentration of 2.3 to 2.5mol/L is prepared first 3 The temperature of the preparation liquid is controlled at 26-32 ℃, and the sand raw material is subjected to primary pickling and then is kept stand for 15min; h with concentration of 1.6-1.8mol/L is reconfigured 2 SO 4 Carrying out acid washing treatment again on the prepared liquid of the (B); finally preparing HCL solution with the concentration of 0.4-0.5mol/L and preparing HCL solution with the concentration of 2-10% H 2 C 2 O 4 Mixing the two solutions, fully soaking the sand stone for 5min, and standing for 30min.
As a further preferred mode of the present invention, in step S4, the sand magnetic separation includes magnetic separation and electric separation: and setting a magnetic separator to carry out magnetic separation on quartz sand under the magnetic field intensity of 800-12000GS so as to remove magnetic impurities, and adopting an electrostatic separator with the voltage of 30 kilovolts so as to remove non-magnetic impurities.
As a further preferable mode of the present invention, in the step S5, an alkaline solution is required to be prepared in the cleaning process, and the alkaline solution is NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 A mixture of components, and NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 The ratio is 1:0.6:0.7:1.2:1.4:0.8: 1.5.
In the step S2, in the calcination process, firstly, starting a vacuum pumping device to vacuumize a tempering furnace before the temperature in the furnace reaches 1100 ℃ to remove air; secondly, when the temperature of the furnace is raised to 1400 ℃, inert gas is filled into the furnace, then a circulating fan is started to raise the temperature, so that the pressure of the inert gas in the furnace is ensured to be more than 2 atmospheres, and then the temperature is raised to 1550 ℃ for 40min.
(III) beneficial effects
The invention provides a processing technology of high-purity quartz sand. The beneficial effects are as follows:
in the traditional purification process, the method of biological leaching is added, so that the iron content in quartz sand can be effectively reduced, the whole treatment process is simple and environment-friendly, and the purification effect is good.
Drawings
Fig. 1 is a schematic diagram of a frame structure according to the principle of the manufacturing method 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.
Referring to fig. 1, the embodiment of the invention provides a technical scheme: a process for preparing high-purity quartz sand includes such steps as proportionally mixing quartz sand with high-purity quartz sand,
s1, firstly, cleaning sand and stone, uniformly screening, and leaching quartz sand by microorganisms after the sand and stone are finished;
s2, calcining the quartz sand, and performing a flotation process after the calcining;
s3, acid leaching quartz sand;
s4, magnetically separating quartz sand;
s5, performing secondary cleaning and drying treatment to finish the processing.
In the step S1, adjusting the pH of sand and stone to be 6.5, and culturing a thiobacillus ferrooxidans solution, wherein the amount of the thiobacillus ferrooxidans in the thiobacillus ferrooxidans solution is 110/mL, and the inoculation amount is 6.5%; sterilizing the stabilized sand, sterilizing by adopting ultraviolet lamp and high temperature, pouring the pre-cultured thiobacillus ferrooxidans solution into the sand for mixing, stirring in the mixing process, controlling the stirring rotation speed to be 220-280r/min, controlling the temperature to be normal temperature, stirring for 25min, sealing after the stirring is completed, standing for 12h at normal temperature, finally pouring clear water, and cleaning and filtering the leached film iron.
In the step S2, firstly, the floating mica is floated, then the iron-containing mineral is floated, and finally, the feldspar is floated, the pH value of ore pulp is adjusted to 3-4 by sulfuric acid, the mica is floated by an amine collector, then the pH value of ore pulp is adjusted to 4-5 by hydrochloric acid, the iron-containing mineral is floated by taking sulfonated petroleum as a collector, finally, the pH value is adjusted to 2-3 by taking fluorous acid, and the amine is used as a collector.
In step S3, HNO with concentration of 2.3-2.5mol/L is prepared first 3 The temperature of the preparation liquid is controlled at 26-32 ℃, and the sand raw material is subjected to primary pickling and then is kept stand for 15min; re-concentration ofH of 1.6-1.8mol/L 2 SO 4 Carrying out acid washing treatment again on the prepared liquid of the (B); finally preparing HCL solution with the concentration of 0.4-0.5mol/L and preparing H with the concentration of 2-10 percent 2 C 2 O 4 Mixing the two solutions, fully soaking the sand stone for 5min, and standing for 30min.
In step S4, the sand magnetic separation includes magnetic separation and electric separation: and setting a magnetic separator to carry out magnetic separation on quartz sand under the magnetic field intensity of 800-12000GS so as to remove magnetic impurities, and adopting an electrostatic separator with the voltage of 30 kilovolts so as to remove non-magnetic impurities.
In step S5, an alkaline solution is needed to be prepared in the cleaning process, wherein the alkaline solution is NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 A mixture of components, and NaOH, KOH, na 2 CO 3 、 K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 The ratio is 1:0.6:0.7:1.2:1.4:0.8: 1.5.
In the step S2, in the calcining process, firstly, starting a vacuumizing device to vacuumize a tempering furnace before the temperature in the furnace rises to 1100 ℃ to remove air; secondly, when the temperature of the furnace is raised to 1400 ℃, inert gas is filled into the furnace, then a circulating fan is started to raise the temperature, so that the pressure of the inert gas in the furnace is ensured to be more than 2 atmospheres, and then the temperature is raised to 1550 ℃ for 40min.
Example 1
Screening sand and stone, using a 100-mesh screen of a screen plate, adjusting the pH of the sand and stone to be 6.8, and culturing a thiobacillus ferrooxidans solution, wherein the amount of the thiobacillus ferrooxidans in the thiobacillus ferrooxidans solution is 110/mL, and the inoculation amount is 6.5%; sterilizing the stabilized sand, sterilizing by adopting ultraviolet lamps and high temperature, pouring the pre-cultured thiobacillus ferrooxidans solution into the sand for mixing, stirring in the mixing process, controlling the stirring rotation speed to be 280r/min, controlling the temperature to be normal temperature, stirring for 25min, sealing after the completion, standing for 12h at normal temperature, finally pouring clear water, and cleaning and filtering leached film iron; feeding raw materials into a furnaceInternal calcination, namely starting vacuumizing equipment to vacuumize a tempering furnace before the temperature in the furnace reaches 1100 ℃ to remove air; secondly, when the temperature of the furnace is raised to 1400 ℃, inert gas is filled into the furnace, and then a circulating fan is started to raise the temperature so as to ensure the pressure of the inert gas in the furnace>2 atm, then raising the temperature to 1550 ℃ for 40min, firstly floating mica, then floating iron-containing minerals and finally floating feldspar, firstly adjusting the pH of ore pulp to 4 by sulfuric acid, floating mica by using amine collectors, then adjusting the pH of ore pulp to 5 by using hydrochloric acid, floating iron-containing minerals by using sulfonated petroleum as a collector, finally adjusting the pH to 3 by using fluorous acid, using amine as a collector, floating feldspar, and preparing HNO with the concentration of 2.5mol/L 3 The temperature of the preparation liquid is controlled at 32 ℃, and the sand raw material is subjected to primary pickling and then is kept stand for 15min; reconfiguring H at a concentration of 1.8mol/L 2 SO 4 Carrying out acid washing treatment again on the prepared liquid of the (B); finally preparing HCL solution with the concentration of 0.5mol/L and preparing 10 percent of H 2 C 2 O 4 Mixing the two solutions, fully soaking the sand stone for 5min, and standing for 30min; carrying out magnetic separation, wherein the sand magnetic separation comprises magnetic separation and electric separation: setting magnetic separator to separate quartz sand under 12000GS magnetic field strength to remove magnetic impurity, adopting electrostatic separator with voltage of 30 KV to remove non-magnetic impurity, and finally configuring NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 A mixture of components, and NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 The ratio is 1:0.6:0.7:1.2:1.4:0.8:1.5, cleaning the raw materials, and then drying the raw materials at 110 ℃.
Example two
Adjusting the pH of sand and stone to be 6.5, and culturing a thiobacillus ferrooxidans solution, wherein the amount of the thiobacillus ferrooxidans in the thiobacillus ferrooxidans solution is 110/mL, and the inoculation amount is 6.5%; sterilizing the stabilized sand, sterilizing at high temperature by ultraviolet lamp, mixing the pre-cultured thiobacillus ferrooxidans solution with sand,stirring in the mixing process, controlling the stirring rotation speed to 220-280r/min, controlling the temperature to be normal, stirring for 25min, sealing after the stirring is completed, standing for 12h at normal temperature, finally pouring clear water, and cleaning and filtering leached film iron; the raw materials are sent into a furnace for calcination, and a vacuumizing device is started to vacuumize a tempering furnace before the temperature in the furnace rises to 1100 ℃ so as to remove air; secondly, when the temperature of the furnace is raised to 1400 ℃, inert gas is filled into the furnace, and then a circulating fan is started to raise the temperature so as to ensure the pressure of the inert gas in the furnace>2 atm, then raising the temperature to 1550 ℃, continuing for 40min, firstly floating mica, then floating iron-containing mineral, finally floating feldspar, firstly adjusting the pH value of ore pulp to 3 by sulfuric acid, floating mica by using amine collector, then adjusting the pH value of ore pulp to 4 by using hydrochloric acid, floating iron-containing mineral by using sulfonated petroleum as collector, finally adjusting the pH value to 2 by using hydrofluoric acid, using amine as collector, floating feldspar, and preparing HNO with the concentration of 2.3mol/L 3 The temperature of the preparation liquid is controlled at 26 ℃, and the sand raw material is subjected to primary pickling and then is kept stand for 15min; reconfiguring H at a concentration of 1.6mol/L 2 SO 4 Carrying out acid washing treatment again on the prepared liquid of the (B); finally preparing HCL solution with the concentration of 0.4mol/L and preparing H with the concentration of 2-10 percent 2 C 2 O 4 Mixing the two solutions, fully soaking the sand and stone for 5min, and standing for 30min, wherein the sand and stone magnetic separation comprises magnetic separation and electric separation: setting a magnetic separator to carry out magnetic separation on quartz sand under the magnetic field intensity of 800GS so as to remove magnetic impurities, adopting an electrostatic separator with the voltage of 30 kilovolts so as to remove non-magnetic impurities, and preparing an alkaline solution in the final cleaning process, wherein the alkaline solution is NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 A mixture of components, and NaOH, KOH, na 2 CO 3 、K 2 CO 3 、Na 2 CO 3 、KHCO 3 、NaHCO 3 The ratio is 1:0.6:0.7:1.2:1.4:0.8:1.5, and finally cleaning the raw materials, and drying the raw materials at the temperature of 105 ℃.
The comparative parameters of the product are tabulated below:
| purification method | Silica content | Iron content | Other impurities |
| Example 1 | 97.6％ | 0.1％ | 2.3％ |
| Example two | 99.5％ | 0.03％ | 0.47％ |
| Traditional process | 99.4％ | 0.02％ | 0.58％ |
The invention aims to solve the problems that in the processing process of quartz sand, the purity of quartz sand is insufficient due to the fact that the quartz sand is rich in more impurities and the subsequent processing is affected, so that high-precision purification is required, the traditional purification process is low in efficiency, and the purified quartz sand is high in impurity filtration.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A processing technology of high-purity quartz sand is characterized in that: the specific manufacturing method comprises the following steps of,
s1, firstly, cleaning and uniformly screening sand, and after the completion, leaching quartz sand by microorganisms, adjusting the PH of the sand to be 6.5, and culturing a thiobacillus ferrooxidans solution, wherein the amount of the thiobacillus ferrooxidans in the thiobacillus ferrooxidans solution is 110/mL, and the inoculation amount is 6.5%; sterilizing the stabilized sand, sterilizing by adopting ultraviolet lamps and high temperature, pouring the pre-cultured thiobacillus ferrooxidans solution into the sand for mixing, stirring in the mixing process, controlling the stirring rotation speed to be 220-280r/min, controlling the temperature to be normal temperature, stirring for 25min, sealing after the stirring is completed, standing for 12h at normal temperature, finally pouring clear water, and cleaning and filtering leached film iron;
s2, calcining the quartz sand, and performing a flotation process after the calcining;
s3, acid leaching quartz sand;
s4, magnetically separating quartz sand;
s5, performing secondary cleaning and drying treatment to finish the processing.
2. The process for processing high-purity quartz sand according to claim 1, wherein: in the step S2, firstly, the floating mica is floated, then the iron-containing mineral is floated, and finally, the feldspar is floated, the pH value of ore pulp is adjusted to 3-4 by sulfuric acid, the mica is floated by an amine collector, then the pH value of ore pulp is adjusted to 4-5 by hydrochloric acid, the iron-containing mineral is floated by taking sulfonated petroleum as a collector, finally, the pH value is adjusted to 2-3 by taking fluorous acid, and the amine is used as a collector.
3. The process for processing high-purity quartz sand according to claim 1, wherein: in step S3, HNO with concentration of 2.3-2.5mol/L is prepared first 3 The temperature of the preparation liquid is controlled at 26-32 ℃, and the sand raw material is subjected to primary pickling and then is kept stand for 15min; h with concentration of 1.6-1.8mol/L is reconfigured 2 SO 4 Carrying out acid washing treatment again on the prepared liquid of the (B); finally preparing HCL solution with the concentration of 0.4-0.5mol/L and preparing H with the concentration of 2-10 percent 2 C 2 O 4 Mixing the two solutions, fully soaking the sand stone for 5min, and standing for 30min.
4. The process for processing high-purity quartz sand according to claim 1, wherein: in step S4, the sand magnetic separation includes magnetic separation and electric separation: and setting a magnetic separator to carry out magnetic separation on quartz sand under the magnetic field intensity of 800-12000GS so as to remove magnetic impurities, and adopting an electrostatic separator with the voltage of 30 kilovolts so as to remove non-magnetic impurities.
5. The process for processing high-purity quartz sand according to claim 1, wherein:in step S5, an alkaline solution is needed to be prepared in the cleaning process, wherein the alkaline solution is NaOH, KOH, na 2 CO 3 、K 2 CO 3 、KHCO 3 、NaHCO 3 A mixture of components, and NaOH, KOH, na 2 CO 3 、K 2 CO 3 、KHCO 3 、NaHCO 3 The ratio is 1:0.6:0.7:1.2:0.8: 1.5.
6. The process for processing high-purity quartz sand according to claim 1, wherein: in the step S2, in the calcining process, firstly, starting a vacuumizing device to vacuumize a tempering furnace before the temperature in the furnace rises to 1100 ℃ to remove air; secondly, when the temperature of the furnace is raised to 1400 ℃, inert gas is filled into the furnace, then a circulating fan is started to raise the temperature, so that the pressure of the inert gas in the furnace is ensured to be more than 2 atmospheres, and then the temperature is raised to 1550 ℃ for 40min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544152.4A CN114392836B (en) | 2021-12-16 | 2021-12-16 | Processing technology of high-purity quartz sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544152.4A CN114392836B (en) | 2021-12-16 | 2021-12-16 | Processing technology of high-purity quartz sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114392836A CN114392836A (en) | 2022-04-26 |
| CN114392836B true CN114392836B (en) | 2023-06-27 |
Family
ID=81227348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111544152.4A Active CN114392836B (en) | 2021-12-16 | 2021-12-16 | Processing technology of high-purity quartz sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114392836B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804129B (en) * | 2022-04-29 | 2024-08-02 | 江苏亨芯石英科技有限公司 | Purification method of high-purity quartz sand |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6059280B2 (en) * | 2014-03-31 | 2017-01-11 | 日本製紙株式会社 | Composite of fine calcium carbonate and fiber, and method for producing the same |
| CN103964444B (en) * | 2014-05-05 | 2016-08-24 | 临沂晟泉矿业有限公司 | A kind of production method of glass sand |
| RU2603934C1 (en) * | 2015-06-05 | 2016-12-10 | Общество с ограниченной ответственностью "НВП Центр-ЭСТАгео" | Method of cleaning quartz sands from iron |
| CN106673158A (en) * | 2016-12-14 | 2017-05-17 | 安徽吉思特智能装备有限公司 | Polymeric ferric sulfate flocculant containing quartz sand and preparation method thereof |
| CN107555442B (en) * | 2017-09-19 | 2020-05-19 | 江苏凯达石英股份有限公司 | Method for refining high-purity quartz sand by using common quartz sand |
| CN110734068A (en) * | 2019-11-01 | 2020-01-31 | 四川省青川红源石业有限责任公司 | Preparation method of high-purity quartz sand |
| CN113019682A (en) * | 2019-12-24 | 2021-06-25 | 江苏康姆罗拉特种陶瓷有限公司 | Processing and purifying process for high-purity fused quartz sand |
| CN112439869A (en) * | 2020-11-19 | 2021-03-05 | 含山县荣盛机械铸造有限公司 | Preparation method of molding sand for casting |
-
2021
- 2021-12-16 CN CN202111544152.4A patent/CN114392836B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114392836A (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110240167B (en) | Extraction process of high-purity quartz | |
| CN106082239B (en) | A kind of high-purity low-iron quartz sand purifying preparation method | |
| CN103964444B (en) | A kind of production method of glass sand | |
| CN103332694B (en) | Preparation method of raw material sand for quartz crucible | |
| CN103663465A (en) | Quartz sand purifying technology | |
| CN103663469B (en) | Quartz sand purifying technique | |
| CN114392836B (en) | Processing technology of high-purity quartz sand | |
| CN105197939A (en) | Acid pickling and waste acid treatment process for improving purity of powdery quartz sand | |
| CN104340981A (en) | Preparation method for high-purity quartz sand | |
| CN111874914A (en) | Method for preparing 4N high-purity quartz sand by taking pegmatite quartz as raw material | |
| CN105000565A (en) | Compounding-based quartz sand purification technology | |
| CN111841829A (en) | High-value comprehensive utilization method for quartz sandstone | |
| CN114853025B (en) | Method for preparing high-purity silicon dioxide by taking silica fume as raw material | |
| CN112593083A (en) | Process for recovering germanium from germanium-containing luminescent glass microcrystalline material | |
| CN111393022B (en) | Preparation method of high-purity low-hydroxyl quartz glass raw material | |
| CN105540595B (en) | The preparation method and its melting furnace of a kind of purity fused powder | |
| CN111013813A (en) | Method for preparing 10ppm low-iron quartz sand by non-pickling process | |
| Zhang et al. | Experimental Research on preparation technics of high-purity quartz material | |
| CN110894158A (en) | Preparation method of low-iron fused quartz powder for solar polycrystalline silicon ingot casting | |
| CN114620733B (en) | Low-carbon green SiO of superconducting high-strength magnetic coupling quartz ore 2 Fine purification method | |
| KR101575610B1 (en) | A method for preparing high-purity silica from low grade silica stone | |
| CN114956097A (en) | Novel quartz sand purification production line | |
| CN116605883A (en) | Method for preparing 4N 7-grade high-purity quartz sand from muscovite type granite quartz | |
| CN115367763A (en) | High-temperature circulating treatment and preparation process of high-purity quartz sand | |
| CN112209385A (en) | Purification process of fused quartz for polycrystalline silicon crucible |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |