CN116639722A - Production and processing technology of barite powder - Google Patents
Production and processing technology of barite powder Download PDFInfo
- Publication number
- CN116639722A CN116639722A CN202310510659.0A CN202310510659A CN116639722A CN 116639722 A CN116639722 A CN 116639722A CN 202310510659 A CN202310510659 A CN 202310510659A CN 116639722 A CN116639722 A CN 116639722A
- Authority
- CN
- China
- Prior art keywords
- barite
- powder
- minutes
- processing
- feeding
- 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.)
- Pending
Links
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 title claims abstract description 105
- 238000012545 processing Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000005516 engineering process Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 86
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 60
- 239000010428 baryte Substances 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000018044 dehydration Effects 0.000 claims abstract description 14
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 229910021538 borax Inorganic materials 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 150000004706 metal oxides Chemical class 0.000 description 6
- 229910052755 nonmetal Inorganic materials 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 230000002087 whitening effect Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- MOWNZPNSYMGTMD-UHFFFAOYSA-N oxidoboron Chemical group O=[B] MOWNZPNSYMGTMD-UHFFFAOYSA-N 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052956 cinnabar Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052949 galena Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910052950 sphalerite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/462—Sulfates of Sr or Ba
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the technical field of production of barite powder, in particular to a production and processing technology of barite powder. The method comprises the following specific steps: scattering and crushing the barite material; grinding the broken barite material to help to be pulverized, filtering, screening and continuously grinding until the barite material is pulverized; calculating and feeding the ground barite material, proportioning and feeding the calculated and fed barite material according to the proportion of components of the barite material, and putting the calculated and fed barite material into a stirrer for mixing and stirring for 25-55 minutes; carrying out dehydration and drying treatment on the uniformly mixed materials, wherein the dehydration and drying treatment is carried out on the dehydrated and dried materials, the dehydration time is 25-30 minutes, and the drying temperature is 250-330 ℃; selecting and collecting the dehydrated and dried barite; the invention provides a process for producing and processing the barite powder, which can increase production efficiency during grinding and whiten the barite powder with low cost.
Description
Technical Field
The invention relates to the technical field of production of barite powder, in particular to a production and processing technology of barite powder.
Background
Barite is the most common mineral of barium and its component is barium sulfate. The mineral veins produced in low-temperature liquid such as quartz-barite veins, fluorite-barite veins and the like are often symbiotic with galena, sphalerite, chalcopyrite, cinnabar and the like. The crystals of barite are large tubular in shape and the crystals together sometimes form rosettes or bifurcated crystal masses, known as cristobalite. Pure barite is colorless and transparent, and is generally white, pale yellow and has glass luster. The barite can be used as white pigment (commonly called lithopone), and can also be used as filler for chemical industry, paper making and textile, and can be used as fluxing agent and increase the brightness of glass in glass production. But it is most primarily used as a weighting agent in the drilling industry and for refining barium. The barite is an important nonmetallic mineral raw material and has wide industrial application, but the existing barite grinding device has low production efficiency and high cost consumption, is not suitable for the development requirement of modern industry, and simultaneously, aluminum powder or zinc powder is added into acid liquid during the production and processing of barite powder to replace hydrogen and reduce metal ions, so that the metal ions are changed from high price to low price to generate soluble sulfate so as to achieve the purpose of whitening powder.
Disclosure of Invention
The invention provides a process for producing and processing the barite powder, which can increase production efficiency during grinding and whiten the barite powder with low cost.
The technical scheme adopted by the invention is as follows: a production and processing technology of barite powder is characterized in that: the method comprises the following specific steps:
s1: scattering and crushing the barite material;
s2: grinding the broken barite material to help to be pulverized, filtering, screening and continuously grinding until the barite material is pulverized;
s3: calculating and feeding the ground barite material, proportioning and feeding the calculated and fed barite material according to the proportion of components of the barite material, and putting the calculated and fed barite material into a stirrer for mixing and stirring for 25-55 minutes;
s4: carrying out dehydration and drying treatment on the uniformly mixed materials, wherein the dehydration and drying treatment is carried out on the dehydrated and dried materials, the dehydration time is 25-30 minutes, and the drying temperature is 250-330 ℃;
s5: selecting and collecting the dehydrated and dried barite, extracting high-quality barite powder from the barite, and washing and selecting again;
s6: then the washed barite material powder is whitened, borax of 0.4-1.8 percent and sodium hydroxide of 0.4-1.8 percent are added according to the weight of the barite material powder, and the barite material powder is roasted in a roasting furnace at the temperature of 1010-1110 ℃ for 28-52min;
s7: feeding the roasted material into a wet fine mill to grind to 1500-4800 meshes;
s8: feeding the material pulp from the wet fine mill into a stirrer, controlling the solid content of the material pulp to be 32-48%, adding concentrated hydrochloric acid according to the proportion of 1000L of water to 120-140L, and reacting for 30-45min in the stirrer;
s9: the reacted material is filtered, deacidified, stirred, washed, filtered and dried to obtain fine barite material powder, and the whitened material powder is molded and stored.
As a further scheme of the invention: the breaking time is 1.5-2.2 hours, and the breaking is a barite breaking device.
As a further scheme of the invention: the stirring time in the step S3 is 35 minutes, the dehydration time in the step S4 is 28 minutes, and the drying temperature is 300 ℃.
As a further scheme of the invention: the weight of borax and sodium hydroxide is 1.2 percent of the weight of the barite powder, the temperature in a roasting furnace is 1080 ℃, and the roasting time is 42 minutes.
As a further scheme of the invention: the solid content of the material paddles is controlled at 42%, concentrated hydrochloric acid is added according to the proportion of 1000L of water added to 130L, and the mixture is reacted in a reaction kettle for 38min.
As a further scheme of the invention: and (5) conveying the roasted material into a wet fine grinder to grind to 3000 meshes.
The invention has the beneficial effects that:
according to the invention, the scattered materials can be ground into powder again through setting material grinding, proportioning and feeding can be carried out according to the quantity of the materials through setting calculation and feeding, the product quality of the product can be improved while the processing is convenient, the materials can be mixed more uniformly through setting mixing and stirring instead of manual stirring, so that manpower resources are saved, the production cost is reduced, automatic material selection and collection processing of the materials can be completed through setting material selection and collection, high-quality barite powder can be conveniently extracted, the product quality can be further improved through setting washing and bleaching, the sales is convenient, and finally the forming processing and storage management of the materials can be completed through setting forming and storage.
Sand is a good cleaner for use in the calcination of barite powder and has a wonder effect, because the non-metal oxide ore bodies contained in barite are much less abrasive than pure barite, and therefore, coarser particles are formed in the barite powder, which if the non-metal oxide is not pure, is coloured and affects the whiteness of the final product. At this time, sodium hydroxide is added as an etchant for the nonmetallic oxide, so that the boron oxide group is convenient for capturing the metallic oxide in the impurities, and the whitening effect in the barite powder is better.
The reaction time in the roasting furnace and the stirrer is very short, the aging is much higher than that of the sulfuric acid method, the reaction with hydrochloric acid does not need heating reaction, and the energy is saved; the calcium in the barite powder is easy to be separated out and thoroughly, the purity of the obtained product is high, in the high-temperature roasting process, the borax captures metal oxides and nonmetal oxides in the barite powder, the molecular chain of barium sulfate in the barite powder is broken to different degrees, and after the barite powder reacts with hydrochloric acid, the particles of the material can be thinned.
Detailed Description
The present invention will be further described below.
A production and processing technology of barite powder is characterized in that: the method comprises the following specific steps:
s1: breaking the barite material for 1.5-2.2 hours;
s2: grinding the broken barite material to help to be pulverized, filtering, screening and continuously grinding until the barite material is pulverized;
s3: calculating and feeding the ground barite material, proportioning and feeding the calculated and fed barite material according to the proportion of components of the barite material, and putting the calculated and fed barite material into a stirrer for mixing and stirring for 35 minutes;
s4: carrying out dehydration and drying treatment on the uniformly mixed materials, wherein the dehydration and drying treatment is carried out on the dehydrated and dried materials, the dehydration time is 28 minutes, and the drying temperature is 300 ℃;
s5: selecting and collecting the dehydrated and dried barite, extracting high-quality barite powder from the barite, and washing and selecting again;
s6: then carrying out whitening treatment on the washed barite material powder, adding 1.2% of borax and 1.2% of sodium hydroxide according to the weight of the barite material powder, and roasting in a roasting furnace at 1080 ℃ for 42min;
s7: delivering the roasted material into a wet fine mill to grind to 3000 meshes; when the materials are finely ground, the stirring mill acts on the material particles with larger acting force. The particles will shatter when the force exceeds the binding force between the particles. The specific surface area of the fine ground barite powder is continuously increased and the surface activity is enhanced.
S8: feeding the material pulp from the wet fine mill into a stirrer, controlling the solid content of the material pulp to be 42%, adding concentrated hydrochloric acid according to the proportion of adding 1000L of water to 130L, and reacting for 38min in the stirrer;
s9: the reacted material is filtered, deacidified, stirred, washed, filtered and dried to obtain fine barite material powder, and the whitened material powder is molded and stored. The specific surface area of the powder is increased, the surface activity is enhanced, the reflectivity of the powder is increased, the porosity of the surface of the particles is reduced, and the whiteness is improved.
According to the invention, the scattered materials can be ground into powder again through setting material grinding, proportioning and feeding can be carried out according to the quantity of the materials through setting calculation and feeding, the product quality of the product can be improved while the processing is convenient, the materials can be mixed more uniformly through setting mixing and stirring instead of manual stirring, so that manpower resources are saved, the production cost is reduced, automatic material selection and collection processing of the materials can be completed through setting material selection and collection, high-quality barite powder can be conveniently extracted, the product quality can be further improved through setting washing and bleaching, the sales is convenient, and finally the forming processing and storage management of the materials can be completed through setting forming and storage.
Sand is a good cleaner for use in the calcination of barite powder and has a wonder effect, because the non-metal oxide ore bodies contained in barite are much less abrasive than pure barite, and therefore, coarser particles are formed in the barite powder, which if the non-metal oxide is not pure, is coloured and affects the whiteness of the final product. At this time, sodium hydroxide is added as an etchant for the nonmetallic oxide, so that the boron oxide group is convenient for capturing the metallic oxide in the impurities, and the whitening effect in the barite powder is better.
The reaction time in the roasting furnace and the stirrer is very short, the aging is much higher than that of the sulfuric acid method, the reaction with hydrochloric acid does not need heating reaction, and the energy is saved; the calcium in the barite powder is easy to be separated out and thoroughly, the purity of the obtained product is high, in the high-temperature roasting process, the borax captures metal oxides and nonmetal oxides in the barite powder, the molecular chain of barium sulfate in the barite powder is broken to different degrees, and after the barite powder reacts with hydrochloric acid, the particles of the material can be thinned.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A production and processing technology of barite powder is characterized in that: the method comprises the following specific steps:
s1: scattering and crushing the barite material;
s2: grinding the broken barite material to help to be pulverized, filtering, screening and continuously grinding until the barite material is pulverized;
s3: calculating and feeding the ground barite material, proportioning and feeding the calculated and fed barite material according to the proportion of components of the barite material, and putting the calculated and fed barite material into a stirrer for mixing and stirring for 25-55 minutes;
s4: carrying out dehydration and drying treatment on the uniformly mixed materials, wherein the dehydration and drying treatment is carried out on the dehydrated and dried materials, the dehydration time is 25-30 minutes, and the drying temperature is 250-330 ℃;
s5: selecting and collecting the dehydrated and dried barite, extracting high-quality barite powder from the barite, and washing and selecting again;
s6: then the washed barite material powder is whitened, borax of 0.4-1.8 percent and sodium hydroxide of 0.4-1.8 percent are added according to the weight of the barite material powder, and the barite material powder is roasted in a roasting furnace at the temperature of 1010-1110 ℃ for 28-52min;
s7: feeding the roasted material into a wet fine mill to grind to 1500-4800 meshes;
s8: feeding the material pulp from the wet fine mill into a stirrer, controlling the solid content of the material pulp to be 32-48%, adding concentrated hydrochloric acid according to the proportion of 1000L of water to 120-140L, and reacting for 30-45min in the stirrer;
s9: the reacted material is filtered, deacidified, stirred, washed, filtered and dried to obtain fine barite material powder, and the whitened material powder is molded and stored.
2. The process for producing and processing the barite powder according to claim 1, wherein the process comprises the following steps: the breaking time is 1.5-2.2 hours, and the breaking is a barite breaking device.
3. The process for producing and processing the barite powder according to claim 1, wherein the process comprises the following steps: the stirring time in the step S3 is 35 minutes, the dehydration time in the step S4 is 28 minutes, and the drying temperature is 300 ℃.
4. The process for producing and processing the barite powder according to claim 1, wherein the process comprises the following steps: the weight of borax and sodium hydroxide is 1.2 percent of the weight of the barite powder, the temperature in a roasting furnace is 1080 ℃, and the roasting time is 42 minutes.
5. The process for producing and processing the barite powder according to claim 1, wherein the process comprises the following steps: the solid content of the material paddles is controlled at 42%, concentrated hydrochloric acid is added according to the proportion of 1000L of water added to 130L, and the mixture is reacted in a reaction kettle for 38min.
6. The process for producing and processing the barite powder according to claim 1, wherein the process comprises the following steps: and (5) conveying the roasted material into a wet fine grinder to grind to 3000 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510659.0A CN116639722A (en) | 2023-05-08 | 2023-05-08 | Production and processing technology of barite powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310510659.0A CN116639722A (en) | 2023-05-08 | 2023-05-08 | Production and processing technology of barite powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116639722A true CN116639722A (en) | 2023-08-25 |
Family
ID=87623899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310510659.0A Pending CN116639722A (en) | 2023-05-08 | 2023-05-08 | Production and processing technology of barite powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116639722A (en) |
-
2023
- 2023-05-08 CN CN202310510659.0A patent/CN116639722A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106587116B (en) | A kind of method for extracting lithium carbonate and aluminium hydroxide using lepidolite and flyash | |
| CN110510620B (en) | Purification method of high-purity quartz sand tailings | |
| CN101306426B (en) | Method for extracting iron washed ore from fly ash or slag | |
| CN101804982B (en) | Purification method of silicon carbide superfine micropowder | |
| CN107935038B (en) | Preparation process of special titanium dioxide for plastic color master batch | |
| CN107935007A (en) | The method that after baking prepares alumina with high temperature and low sodium | |
| CN100577607C (en) | Process for producing high white superfine talc powder from black talc | |
| CN101306926B (en) | Process for abstracting floating air ball from fly ash or slag | |
| CN107021501A (en) | A kind of method that gangue prepares high oil absorption value calcined kaolin | |
| CN101823723B (en) | Process method for preparing ultra-fine high-brightness sericite powder by pyrophyllite | |
| US4900533A (en) | Alkaline earth metal carbonates | |
| CN107915231A (en) | A kind of method and quartz calcining furnace that glass sand is prepared using vein quartz environmental protection | |
| CN107902685B (en) | A kind of no grinding aid wet-milling, slurry grading system for superfine heavy calcium carbonate technique | |
| CN107805043B (en) | Method for preparing kaolin for medium-high grade ceramics from fine tailings and poor-quality kaolin | |
| CN108998658A (en) | A method of roasting vanadium extraction | |
| CN1994880A (en) | Process for preparing white carbon black using attapulgite clay | |
| CN1041529C (en) | Process for refining and bleaching barite powder | |
| CN112813275B (en) | Method for inhibiting reaction loss of metal aluminum in aluminum ash wet-process aluminum extraction process | |
| CN108840363A (en) | A kind of preparation process of high-purity high whiteness barium sulfate | |
| CN116639722A (en) | Production and processing technology of barite powder | |
| CN102198956A (en) | New process for producing aluminum and silicon chemical products by low-grade bauxite or kaolin raw material based on alkaline method | |
| CN102311123A (en) | Method for removing soluble impurity in white carbon black prepared from precipitation method | |
| CN107445190A (en) | A kind of method that high-quality superfine light calcium carbonate is prepared using gypsum as raw material | |
| CN101332998A (en) | Method for preparing barium sulfate | |
| CN107697949B (en) | Titanium dioxide production process for chloridizing scar-removing sand by sulfuric acid method kiln dropping product |
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 |