CN1900018A - Process for preparing high-white superfine talcum powder from black talcum - Google Patents
Process for preparing high-white superfine talcum powder from black talcum Download PDFInfo
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- CN1900018A CN1900018A CN 200610101218 CN200610101218A CN1900018A CN 1900018 A CN1900018 A CN 1900018A CN 200610101218 CN200610101218 CN 200610101218 CN 200610101218 A CN200610101218 A CN 200610101218A CN 1900018 A CN1900018 A CN 1900018A
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- calcining
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- ore
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- whiteness
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- 239000000454 talc Substances 0.000 title claims abstract description 26
- 229910052623 talc Inorganic materials 0.000 title claims abstract description 26
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 235000012222 talc Nutrition 0.000 title abstract description 19
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000001354 calcination Methods 0.000 claims abstract description 39
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 25
- 239000011707 mineral Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 20
- 238000007885 magnetic separation Methods 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 17
- 239000004575 stone Substances 0.000 claims description 16
- MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid group Chemical group C(C(=O)O)(=O)O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- 239000003814 drug Substances 0.000 claims description 13
- 238000013467 fragmentation Methods 0.000 claims description 10
- 238000006062 fragmentation reaction Methods 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000005188 flotation Methods 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000004061 bleaching Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000001238 wet grinding Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052742 iron Inorganic materials 0.000 abstract description 10
- 238000000227 grinding Methods 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract 1
- 235000010755 mineral Nutrition 0.000 description 11
- 238000011109 contamination Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000002791 soaking Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Substances CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a process for preparing high-whiteness superfine talcum powder from black talc, which is characterized in that black talc minerals are used as raw materials, and the high-whiteness superfine talcum powder with the whiteness of 90-98 and the fineness of 0-6000 meshes is prepared by mineral separation, crushing, grinding, calcining, iron removal, scattering and grading.
Description
Technical field
The present invention relates to a kind of technology of producing high white superfine talc powder from black talc, specifically utilize black talcum mineral to prepare the chemical materials of Gao Bai, high-purity, ultrafine powder.
Background technology
CN1203124.A discloses " a kind of preparation method of superfine talcum powder ", and its technological process is 1) raw material is carried out fragmentation; 2) material after the fragmentation is carried out grinding; 3) with the material slurrying 4 behind the grinding) material after the slurrying is carried out the ultra-fine mill stripping of wet type; 5) material after the ultra-fine mill stripping is carried out strong drying and collects goods.
In the technique scheme, described material slurrying is with the material Jia Shui behind the grinding, adds the grinding aid medicament and be configured to the slurry that solid concentration is 20%-80%, and wherein the concentration optimum range is 50%-75% admittedly.The metering of described adding grinding aid medicament is 0.1%-2%.Described grinding aid can be poly-propionic acid or its esters, also can be phosphoric acid salt or its polymer.
Summary of the invention
Purpose of the present invention aims to provide the technology that a kind of black talc is made high whiteness superfine talcum powder, substitutes expensive titanium dioxide, satisfying the preparation requirement of high-quality paint, rubber, plastics, and is widely used in electronics, pottery, electrical isolation production field.
To achieve these goals, the technology of producing high white superfine talc powder from black talc of the present invention is: ore dressing, the artificial hand selection is carried out in the black talc ore deposit, and select the massive ore of 1-50Cm; Calcining, with the 1-50Cm massive ore calcining of selecting, calcining temperature is 800-1400 ℃.Calcination time is 4-6 hour, and calcining back soaking time is 3-5 hour, and cooling obtains block whiten stone then; Broken, abrasive dust carry out fragmentation, abrasive dust to calcining the back massive ore; High-gradient magnetic separation carries out high-gradient magnetic separation to the mineral behind broken, the abrasive dust, removes iron contamination, and granular, the block whiten stone and the whiteness that promptly get whiteness and be 90-93 are that 90-93, fineness are 0--3000 purpose whiten stone flour.
Another technology of producing high white superfine talc powder from black talc of the present invention is: with black talc crushing raw ore to 0 order; High-gradient magnetic separation is removed the iron contamination in the broken talcum; Dry then or airing; Clamp dog, abrasive dust are made bulk, pulverize according to the purposes needs; Calcining respectively by adding 4-8 kilogram sodium-chlor per ton, after stirring, was calcined the mineral of clamp dog and abrasive dust respectively 4-6 hour in the mineral of clamp dog and abrasive dust, and calcining temperature is 800-1400 ℃, calcining back insulation 3-5 hour; After cooling, with the calcining after epipastic mineral break up, classification, block, epipastic mineral are carried out high-gradient magnetic separation, remove iron contamination wherein, granular, the block whiten stone and the whiteness that promptly get whiteness and be 93-96 are that 93-97, fineness are 0-3000 purpose whiten stone flour.
The another technology of producing high white superfine talc powder from black talc of the present invention is: to the black talc crushing raw ore; The wet method defibrination was starched mill 4-5 hour to the ore of fragmentation having under the condition of water; High-gradient magnetic separation carries out deironing to slurry; Flotation, adopting slurry is that 25% concentration is carried out floride-free flotation; Removal of impurities is adjusted concentration and is in 50% the slurry and adds medicament, and its ratio is a raw ore: water: medicament=100: 50: 30, medicament proportioning are oxalic acid: hydrochloric acid=20: 10, stirred at normal temperatures 0.5-3 hour, and remove impurity; Bleaching, the vat powder that adds the 0.5-3 kilogram in the slurry after the removal of impurity is bleached; Washup with clear water washup 2-3 time, makes pH value reach 6.8-7.5 to the slurry after the bleaching; Oven dry drains the back oven dry with the slurry after the washup; Calcining, by adding 4-8 kilogram sodium-chlor per ton, calcined 3-4 hour the back that stirs in the powder after oven dry, and calcining temperature is 800-1300 ℃, after cooling; High-gradient magnetic separation, with the powder after the calcining break up, classification, carry out high-gradient magnetic separation, remove iron contamination, promptly getting whiteness is 95-99, fineness is the 0-6000 order, Mg content is the talcum powder more than 33%.
The present invention compared with prior art has following excellent effect:
1) the present invention adopts calcining process, make black talc under hot conditions, a small amount of organic substance in the raw ore is along with temperature increases, the crystalline structure lattice progressively destroys partial crystallization water, thereby organic substance is discharged from gradually, sodium-chlor reacts in the high-temperature calcination process as whitening agent, plays the effect of brightening removal of impurities, has improved the purity and the whiteness of talcum powder goods greatly.
2) the present invention adopts the wet method abrasive dust, through iron removal by magnetic separation, removes hazardous trace elements such as potassium, sodium, aluminium through flotation, now removes organic impurity through calcining, makes the whiteness of talcum powder goods reach 90-99, and ultrafine powder-2 μ m is greater than 99%.
3) the talcum powder range of application that adopts the present invention to make is more extensive, and the extra fine talc powder product can substitute expensive titanium dioxide, is used as filler in the production of high-quality paint, rubber, plastics etc., has a wide range of applications in fields such as electronics, pottery, electrical isolations.
4) calcining of the present invention and ore grinding can be according to circumstances, put upside down to get final product; The present invention makes black talc make Gao Bai, high-purity superfine talcum powder and whiten stone.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1:
The black talc raw ore is carried out the artificial hand selection, the quality block of 1Cm-50Cm is selected 1000 kilograms, place in the calcining furnace and calcine, calcining temperature is 800 ℃-1400 ℃, calcination time is 4-6 hour, and calcining back soaking time is 3-5 hour, then naturally cooling, according to the difference of purposes, screen block whiten stone again; Abrasive dust, the incinerating raw ore inserted abrasive dust makes talcum powder in the shredder, block whiten stone and talcum powder are carried out high-gradient magnetic separation, remove iron contamination, granular, the block whiten stone and the whiteness that promptly get whiteness and be 90-93 are that 90-93, fineness are 0-3000 purpose whiten stone flour.
Embodiment 2:
The black talc raw ore is crushed to 0 order, adopt high-gradient magnetic separation to remove iron contamination, behind oven dry or the natural airing, make bulk according to the purposes needs, or place abrasive dust in the shredder, in block and epipastic mineral, add sodium-chlor (adding 4-8 kilogram sodium-chlor in 1000 kilograms of mineral) respectively, after stirring, the mineral of clamp dog and abrasive dust were placed in the calcining furnace calcining respectively 4-6 hour, calcining temperature is 800 ℃-1400 ℃, calcining back soaking time is 3-5 hour, after cooling, to granular, block, the powdered mineral adopt high-gradient magnetic separation, remove iron contamination, epipastic mineral is through breaing up, it is 93-97 that classification promptly gets whiteness, fineness is a 0-3000 purpose talcum powder, and whiteness is the granular of 93-96, block whiten stone.
Embodiment 3:
The black talc raw ore is carried out fragmentation, adopt 1000 kilograms of wet millings, ground 4-5 hour, make slurry, take high-gradient magnetic separation to remove iron contamination to slurry, adopting slurry is that 25% concentration is carried out floride-free flotation, in floatation process, effectively remove potassium, sodium, hazardous trace elements such as aluminium, adjusting concentration is to add medicament in 50% the slurry, its ratio is a raw ore: water: medicament=100: 50: 30, medicament is made up of oxalic acid and saline and alkaline acid, its proportioning is: oxalic acid: hydrochloric acid=20: 10, medicament and slurry were stirred 0.5-3 hour at normal temperatures, remove impurity by reaction, the vat powder that adds the 0.5-3 kilogram in the slurry after removing impurity is bleached, use clear water washup 2-3 time then, when making pH value reach 6.8-7.5, place slurry pressure filter to drain, oven dry is placed in the calcining furnace and calcined 3-4 hour, and calcining temperature is 800 ℃-1300 ℃, and the powder after the calcining is broken up, classification, adopt the high-gradient magnetic separation deironing again, making whiteness is 95-99, and fineness is the 0-6000 order, and Mg content is the talcum powder more than 33%.
Claims (3)
1, a kind of technology of producing high white superfine talc powder from black talc, adopting the black talc mineral is raw material, through ore dressing, calcining, abrasive dust, deironing, it is characterized in that selecting through artificial hand the ore of 1Cm-50Cm; Massive ore was calcined 4-6 hour, and calcining temperature is 800 ℃-1400 ℃, calcining back insulation 3-5 hour, cooling then; Ore after the calcining is carried out fragmentation, abrasive dust; Mineral behind broken and the abrasive dust are carried out high-gradient magnetic separation, and granular, the block whiten stone and the whiteness that promptly get whiteness and be 90-93 are that 90-93, fineness are 0--3000 purpose whiten stone flour.
2, a kind of technology of producing high white superfine talc powder from black talc, adopting the black talc mineral is raw material, through fragmentation, deironing, airing or oven dry, clamp dog or abrasive dust, calcining, scattering and grading, it is characterized in that broken black talc mineral are 0 order; Ore to fragmentation carries out high-gradient magnetic separation; Oven dry or airing mineral; The exsiccant mineral are carried out clamp dog, abrasive dust; Add sodium-chlor (adding 4-8 kilogram sodium-chlor in 1000 kilograms of mineral) respectively in block and epipastic mineral, after stirring, the mineral of clamp dog and abrasive dust were calcined respectively 4-6 hour, calcining temperature is 800 ℃-1400 ℃, calcining back insulation 3-5 hour; With the epipastic mineral after the calcining break up, classification, powdery, granular, massive minerals are carried out high-gradient magnetic separation, granular, the block whiten stone and the whiteness that promptly get whiteness and be 93-97 are that 93-97, fineness are 0-3000 purpose whiten stone flour.
3, a kind of technology of producing high white superfine talc powder from black talc, adopting the black talc mineral is raw material, through fragmentation, wet milling, deironing, flotation, washing, calcining, scattering and grading, it is characterized in that the ore after the fragmentation was carried out wet milling 4-5 hour, make slurry; Slurry is carried out high-gradient magnetic separation; With slurry is that 25% concentration is carried out floride-free flotation, adjusting slurry concentration again is 50%, in the slurry of this concentration, add medicament, its proportioning is a raw ore: water: medicament=100: 50: 30, described medicament is oxalic acid and hydrochloric acid, its proportioning is an oxalic acid: hydrochloric acid=20: 10, medicament add the back and stirred 0.5-3 hour under normal temperature condition, add the vat powder bleaching of 0.5-3 kilogram afterwards, use clear water washup 2-3 time then, the control pH value is 6.8-7.5, and slurry is drained the back oven dry, presses adding 4-8 kilogram sodium-chlor per ton in the original ore powder after oven dry, calcining is 3-4 hour after evenly stirring, calcining temperature is 800 ℃-1300 ℃, after cooling, breaks up, classification, carry out high-gradient magnetic separation, promptly getting whiteness is 95-99, and fineness is the 0-6000 order, and Mg content is at the high whiten stone flour more than 33%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610101218A CN100577607C (en) | 2006-07-01 | 2006-07-01 | Process for preparing high-white superfine talcum powder from black talcum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610101218A CN100577607C (en) | 2006-07-01 | 2006-07-01 | Process for preparing high-white superfine talcum powder from black talcum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1900018A true CN1900018A (en) | 2007-01-24 |
| CN100577607C CN100577607C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610101218A Expired - Fee Related CN100577607C (en) | 2006-07-01 | 2006-07-01 | Process for preparing high-white superfine talcum powder from black talcum |
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| CN (1) | CN100577607C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102600968A (en) * | 2012-04-09 | 2012-07-25 | 无锡豪普钛业有限公司 | Titanium white powder de-ironing device |
| CN103342371A (en) * | 2013-07-05 | 2013-10-09 | 天津水泥工业设计研究院有限公司 | Process and device for whitening calcined black talc |
| CN103555002A (en) * | 2013-11-05 | 2014-02-05 | 重庆市锦艺硅材料开发有限公司苏州分公司 | Inorganic filler for copper-clad plate and preparation method of filler |
| TWI449681B (en) * | 2010-09-06 | 2014-08-21 | Taiwan Union Technology Corp | Epoxy resin blend |
| CN104310414A (en) * | 2014-09-26 | 2015-01-28 | 浙江鸿延矿业科技有限公司 | Method for preparing high-brightness ultrafine talcum powder by using black talcum |
| CN109127080A (en) * | 2018-08-15 | 2019-01-04 | 贵州紫云月华新材料有限公司 | A kind of talcum powder producing method and its technique |
| CN109911911A (en) * | 2019-04-11 | 2019-06-21 | 杨天睿 | A kind of method of whitening and talcum of impure talcum mud |
| CN110002453A (en) * | 2019-05-20 | 2019-07-12 | 大连地拓环境科技有限公司 | Method for purifying low-grade talc ore |
| CN110436473A (en) * | 2019-08-27 | 2019-11-12 | 陕西国防工业职业技术学院 | A kind of coal slime activation method for capableing of iron-removal and whitening |
| CN116355441A (en) * | 2023-03-28 | 2023-06-30 | 江西广源化工有限责任公司 | Black talcum whitening composite powder and preparation method thereof |
| CN117509656A (en) * | 2023-11-30 | 2024-02-06 | 江西广源化工有限责任公司 | A method for purifying ultrafine high-silica talc powder |
| CN118771895A (en) * | 2024-09-06 | 2024-10-15 | 佛山生态海绵城市科技发展有限公司 | A method for producing calcined talc powder for high-whiteness building materials using black talc |
| CN119406571A (en) * | 2024-10-30 | 2025-02-11 | 芦溪县明亮矿业有限公司 | Iron removal system and method based on black talc |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398322B (en) * | 2015-07-30 | 2017-10-31 | 刘海涛 | A kind of preparation method of black talc base composite white pigment |
| CN111232996A (en) * | 2020-01-20 | 2020-06-05 | 西南科技大学 | Low-temperature calcination whitening process for talc ore, product and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203124A (en) * | 1998-05-08 | 1998-12-30 | 国家非金属矿深加工工程技术研究中心 | Preparation method of superfine talcum powder |
-
2006
- 2006-07-01 CN CN200610101218A patent/CN100577607C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI449681B (en) * | 2010-09-06 | 2014-08-21 | Taiwan Union Technology Corp | Epoxy resin blend |
| CN102600968A (en) * | 2012-04-09 | 2012-07-25 | 无锡豪普钛业有限公司 | Titanium white powder de-ironing device |
| CN103342371A (en) * | 2013-07-05 | 2013-10-09 | 天津水泥工业设计研究院有限公司 | Process and device for whitening calcined black talc |
| CN103555002A (en) * | 2013-11-05 | 2014-02-05 | 重庆市锦艺硅材料开发有限公司苏州分公司 | Inorganic filler for copper-clad plate and preparation method of filler |
| CN103555002B (en) * | 2013-11-05 | 2015-06-10 | 重庆市锦艺硅材料开发有限公司 | Inorganic filler for copper-clad plate and preparation method of filler |
| CN104310414A (en) * | 2014-09-26 | 2015-01-28 | 浙江鸿延矿业科技有限公司 | Method for preparing high-brightness ultrafine talcum powder by using black talcum |
| CN109127080A (en) * | 2018-08-15 | 2019-01-04 | 贵州紫云月华新材料有限公司 | A kind of talcum powder producing method and its technique |
| CN109911911A (en) * | 2019-04-11 | 2019-06-21 | 杨天睿 | A kind of method of whitening and talcum of impure talcum mud |
| CN110002453A (en) * | 2019-05-20 | 2019-07-12 | 大连地拓环境科技有限公司 | Method for purifying low-grade talc ore |
| CN110436473A (en) * | 2019-08-27 | 2019-11-12 | 陕西国防工业职业技术学院 | A kind of coal slime activation method for capableing of iron-removal and whitening |
| CN116355441A (en) * | 2023-03-28 | 2023-06-30 | 江西广源化工有限责任公司 | Black talcum whitening composite powder and preparation method thereof |
| CN117509656A (en) * | 2023-11-30 | 2024-02-06 | 江西广源化工有限责任公司 | A method for purifying ultrafine high-silica talc powder |
| CN118771895A (en) * | 2024-09-06 | 2024-10-15 | 佛山生态海绵城市科技发展有限公司 | A method for producing calcined talc powder for high-whiteness building materials using black talc |
| CN118771895B (en) * | 2024-09-06 | 2025-06-06 | 佛山生态海绵城市科技发展有限公司 | Method for producing calcined talcum powder for high-whiteness building material by using black talcum |
| CN119406571A (en) * | 2024-10-30 | 2025-02-11 | 芦溪县明亮矿业有限公司 | Iron removal system and method based on black talc |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100577607C (en) | 2010-01-06 |
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