CN101602898A - Whitening method for washing iron-dyed kaolin - Google Patents
Whitening method for washing iron-dyed kaolin Download PDFInfo
- Publication number
- CN101602898A CN101602898A CNA2009101122575A CN200910112257A CN101602898A CN 101602898 A CN101602898 A CN 101602898A CN A2009101122575 A CNA2009101122575 A CN A2009101122575A CN 200910112257 A CN200910112257 A CN 200910112257A CN 101602898 A CN101602898 A CN 101602898A
- Authority
- CN
- China
- Prior art keywords
- kaolin
- iron
- dyed
- whitening
- washing
- 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.)
- Granted
Links
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Whitening method for washing iron-dyed kaolin relates to a kind of kaolin.Provide a kind of iron of can removing to dye iron in the kaolin, the kaolin whiteness is higher, and cost is lower, whitening method for washing iron-dyed kaolin that can industrialization.The kaolin raw ore is removed thicker impurity such as detrital minerals such as fine sand, feldspar and landwaste by washing, add SYNTHETIC OPTICAL WHITNER then the ferric iron in the kaolin ore is reduced into ferrous iron, washing and filtering is removed, at last by adding the whitening agent calcining, make iron contamination and chlorine reaction in the clay generate the gaseous state iron chloride salt, eliminate iron chloride salt in the evaporable mode, remove the purpose that impurity improves the kaolin whiteness thereby reach.
Description
Technical field
The present invention relates to a kind of kaolin, especially relate to a kind of washing iron-dyed kaolinic bleaching and calcining and brighten production technique.
Background technology
As a kind of important nonmetallic minerals, kaolin ore is exploited in a large number at present, and high-quality resource reduces day by day.High-quality calcined kaolin, especially Gao Bai, superfine calcined kaolin are in the state that supply falls short of demand, develop and utilize kaolin inferior to become the problem that present manufacturing enterprise extremely is concerned about.
Iron dye kaolin since its iron-holder up to about 1%, and institute's iron content is water-fast ferric iron, needs to adopt special mode carry out iron-removal and whitening.The mode that the removing iron by kaolin of present bibliographical information brightens mainly contains flotation process, high-gradient magnetic method, acidic treatment; Calcining is brightened the chlorination roast method that mainly contains, is added the whitening agent calcination method.
Flotation process is meant and adds the ground limestone powder that in the kaolin ore pulp limestone powder is as sorbent material, with the Fe in the ore pulp
2O
3Be adsorbed onto on the limestone powder carrier, carrier both can rely on the hydrophobicity of self, and the hydrophobicity that reliable again trapping agent causes is attached to bubble, thereby makes Fe
2O
3Separate with kaolin.People such as P.Raghavan (P.Raghavan et al.Additional investigationson the separation of titanoferrous impurities from kaolin by high shear pretreatment and frothflotation-Part I.Applied Clay Science, 2007,38:33-42) propose, the kaolin flotation conditions can obtain whiteness and reach 85.7% product behind optimum optimization.The shortcoming of this method is: de-ironing efficiency is not high, and the energy consumption demand is big, and technical process is comparatively complicated, and the heavy industrialization application remains further perfect.
High-gradient magnetic method be according to ore when the magnetic separator magnetic field because various mineral constituent magnetic differences, under the action of a magnetic field, the track difference of their motions, thus realize a kind of beneficiation method of mineral by magnetic resolution.People (Chandra B Maurya et al.High gradient magnetic separation of china clays.Bull.Mater.Sci.1998 such as Chandra B Maurya, 10:471-475) propose, by high-gradient magnetic method, the kaolin whiteness value can improve 15 percentage points.This method is to removing relevant with iron cpd magnetic power, better to ferromagnetism iron cpd effect, more weak to the magnetic iron cpd of effect of the iron cpd in the kaolin, and effect is then not obvious.
Acidic treatment is to adopt suitable sour solvent treatment kaolin, changes the insoluble iron cpd in the kaolin into soluble iron cpd and separates with kaolin, reaches the purpose of iron-removal and whitening.People such as Ambikadevi (Ambikadevi et al.Effect oforganic acids on ferric iron removal from iron-stained kaolinite.Applied Clay Scienc, 2000,16:967～971) proposing oxalic acid is the best extraction agent of dissolved iron impurity from meticulous kaolin ore.People such as S.K.Mandal (S.K.Mandal et al.Iron leaching from China clay with oxalic acid:effect of differentphysicochemical parameters.Int.J.Miner.Process.2004,74:263-270) propose, clay after oxalic acid treatment, its deironing rate can reach 40%, and red basic disappearance of clay is applicable to the production of general pottery.People (Sung Oh Lee et al.Dissolution of iron oxide using oxalic acid.Hydrometallurgy such as Sung Oh Lee, 2007,87:91-99) propose, oxalic acid but is easy to dissolve to the oxyhydroxide of iron such as pyrrhosiderite and slower to the dissolving of rhombohedral iron ore.Though the kaolin whiteness after this method bleaching significantly improves, because the useful component aluminium in the kaolin is dissolved in molten iron, has destroyed kaolinic crystalline structure, has had a strong impact on its application in every respect.
Chlorination roast method is to feed chlorine to make iron contamination in the kaolin generate the muriate of gas phase or condensed phase and complex compound under reducing atmosphere and overflow in kaolin calcined process, thereby improves the kaolin whiteness.People (J.A.Gonz á lezet al.Bleaching of kaolins and clays by chlorination of iron and titanium.Applied ClayScience such as J.A.Gonz á lez, 2006,33:219-229) propose to adopt the method for logical chlorine under the high temperature, from different clays and kaolin mineral, removed iron, titanium impurity.They have obtained the optimum optimizing condition of high-temp chlorination bleaching clay by experiment, and de-ironing efficiency with this understanding is very high.The shortcoming of this method is that the chlorine environmental pollution that feeds is bigger, so fail to be applied on producing.
Thereby adding the whitening agent calcination method is meant adds whitening agent and the kaolin raising kaolin whiteness of having an effect in kaolin calcined process.Chinese patent 02143657.6 discloses a kind of kaolin calcined producing process, and the mixture that adopts cleaned coal, sodium sulfate and sodium-chlor to form at 10: 0.3: 0.2 by weight is a whitening agent, and whiteness can reach 90%.
In sum, all there is certain deficiency in main processing method at present, perhaps also is not suitable for suitability for industrialized production.
Summary of the invention
Purpose of the present invention aims to provide a kind of iron of can removing and dyes iron in the kaolin, and the kaolin whiteness is higher, and cost is lower, whitening method for washing iron-dyed kaolin that can industrialization.
Technical scheme of the present invention is to adopt iron to be dyed kaolin to wash thicker impurity such as detrital mineral and landwaste earlier, is mixed with ore pulp, adds sulfuric acid in ore pulp, regulates slurry pH; Adding V-Brite B (is commonly called as: vat powder), react for some time, water-fast ferric iron in the kaolin is reduced into soluble ferrous iron, add complexing agent oxalic acid and make the ferrous iron complexing; Method by washing and filtering is removed iron contamination; Adding an amount of whitening agent at last calcines in calcining kiln.Reduce the iron level in the kaolin, the kaolin whiteness is greatly improved; Add the whitening agent calcining method at last and improve kaolinic calcining whiteness.
The present invention includes following steps:
1) the kaolin raw ore is washed, smash slurry after, rough sand, chip enter log washer, the ore pulp that contains fine sand enters screw classifier;
2) two portions ore pulp behind log washer and screw classifier is transported to the branch scavenger and carries out the sorting cyclical operation, and the ore pulp that comes out from minute scavenger enters concentration basin, and divides the fine sand of scavenger bottom to extract out with slush pump;
3) ore pulp in the concentration basin is transported to Bellmer, regulates pulp density;
4) add sulfuric acid stirring and adjusting slurry pH, add the SYNTHETIC OPTICAL WHITNER stirring and carry out bleaching action, add complexing agent and carry out complex reaction, add clear water washing ore pulp then;
5) wash when the pH value reaches neutrality when ore pulp, after the sedimentation water is discharged, make pulp density reach 35%～45% by mass percentage, it is standby to be transported to pulp storage tank then;
6) by slush pump ore pulp is sent into the machine of delaminating and carry out ultra-fine delaminating;
7) slurry after will delaminating carries out spraying drying, adds whitening agent then, send into beater after mixing and disperse to break up, the mixture powder of Fuller's earth and whitening agent;
8) the mixture powder with Fuller's earth and whitening agent is conveyed into the calcining kiln calcining, and calcining cools to room temperature with the furnace after finishing;
9) kaolin after will calcining is sent into beater and is carried out depolymerization and break up, washing iron-dyed kaolin.
In step 2) in, the cyclical operation of 3 branch scavengers is preferably adopted in described sorting cyclical operation.
In step 3), described adjusting pulp density can be 15%～25% by mass percentage, is preferably 18%～23%.
In step 4), described pH value is less than 4, be preferably 2～3, described SYNTHETIC OPTICAL WHITNER preferably is selected from V-Brite B (be commonly called as and be vat powder) etc., the add-on of SYNTHETIC OPTICAL WHITNER can be 1%～3% of ore pulp total mass by mass percentage, is preferably 1.5%～2.5%, and the pulp density in the described bleaching action preferably is 15%～25% by mass percentage, the time of bleaching action can be 20～60min, is preferably 30～50min; Described complexing agent preferably is selected from oxalic acid etc., and the add-on of complexing agent can be 0.7%～1% of ore pulp total mass by mass percentage, is preferably 0.8%～0.9%, and the time of described complex reaction can be 10～20min, is preferably 17～19min.
In step 5), described pH value is preferably 6～7.
In step 6), described ultra-fine delaminating can be crushed to ore pulp in 1500～3500 orders, preferably is crushed to 2000～3000 orders.
In step 7), described whitening agent preferably is selected from ammonium chloride etc., and the add-on of whitening agent can be 1%～5% of slurry total mass after delaminating by mass percentage, is preferably 2%～4%.
In step 8), in the described incinerating process, temperature rise rate can be 4～6 ℃/min, is preferably 4.5～5.5 ℃/min, and the incinerating temperature can be 950～1000 ℃, is preferably 965～985 ℃, and the incinerating time can be 60～120min, is preferably 75～115min.
Iron in the described kaolin has two types: the first occupies the structural iron of octahedral site in the mica mineral crystalline structure; It two is the oxide compound or the oxyhydroxide of the iron that exists with iron mineral form independently.The present invention is applicable to the removal of back one type of iron contamination.For the present invention is described, adopt the natural whiteness in washing back be about 60% iron dye kaolin be raw material wherein Al content be about 38%, Fe content is about 1%, 1280 ℃ of sintering whiteness are about 85%; Essential mineral consists of the white mica and the quartz of kaolinite and minute quantity; Mineral structure mainly is a flakey, contains a small amount of tubulose.
Can to reach 80%～82%, 1280 ℃ of sintering whiteness be 90%～92% to natural whiteness behind the kaolin bleaching, and Al content is 36%～38%, and Fe content is 0.5%～0.52%.Mineral composition and structure do not change, and reach ceramic grade kaolin leading indicator.The kaolin calcined back whiteness of breaing up can reach 91%～93%, and fineness is about 2500 orders, and wherein Al content is greater than 44%, and Si content is about 55%.Use Gao Bai, ultra-fine washing iron-dyed kaolin product that the present invention produced, be mainly used in industrial circles such as high-grade paint.Advantage of the present invention is: cost is low, and is simple to operate, meets preparation low cost, high whiteness and high reactivity and calcines washing iron-dyed kaolinic industrialized requirement.
Embodiment
Below provide some embodiment of washing iron-dyed kaolinic bleaching of the present invention and calcining method of whitening.
Embodiment 1
1) dying kaolin with Longhai City, Fujian Province iron is example, and it is that 60.51%, 1280 ℃ of sintering whiteness is 84.13% that Longhai City's iron dyes kaolin natural whiteness after washing, and Al content is 38.03%, and Fe content is 1.03%.Essential mineral consists of kaolinite, contains a spot of white mica and quartz.Mineral structure contains a small amount of tubulose based on flakey.
2) Longhai City's iron after 16 tons of washings of dry weight being dyed kaolin adds in the Bellmer, adding water and stirring and adjusting pulp density is 15%, adding vitriol oil adjusting slurry pH again is 2, the oxalic acid reaction 15min of adding 0.7% behind the vat powder reaction 40min of adding 2%, adding water washing to the pH value of ore pulp then is 7, after the sedimentation water is discharged, make pulp density reach 45%, send into the machine of delaminating by slush pump then and carry out superfine grinding to 2500 order.
3) recording the Fuller's earth whiteness is that 80.5%, 1280 ℃ of sintering whiteness is 90.4%, and Fe content is 0.50%, and Al content is 36.16%.Mineral composition and structure do not change.
4) slurry after will delaminating carries out spraying drying, adds 2% whitening agent ammonium chloride then, mixes, and imports beater then and breaks up.Feed bin is standby before being transported into calcining kiln after breaing up.
5) the kaolin powder is conveyed into the calcining kiln calcining, 5 ℃/minute of temperature rise rates, 950 ℃ of calcining temperatures, the time is 60min, closes the oil liquefied gas valve after calcining finishes and cools to room temperature with the furnace, carries out depolymerization and breaks up.After wrapping machine metering, packing enter the product library as ready.
6) the kaolin calcined back whiteness of breaing up can reach 91%, and fineness is about 2500 orders, and wherein Al content is 44.47%, and Si content is 55.01%.
Embodiment 2: raw ore and technological process are with embodiment 1.20 tons of kaolin dry weights, pulp density are 20%, and slurry pH is 2, vat powder add-on 3%, reaction times 50min, oxalic acid add-on 0.9%, reaction times 15min, wash to slurry pH be 6, pulp density 40% is delaminated to 3000 orders.Recording the Fuller's earth whiteness is that 82%, 1280 ℃ of sintering whiteness is 91.7%, and Fe content is 0.52%, and Al content is 36.96%.Whitening agent ammonium chloride amount 3%, 980 ℃ of calcining temperatures, time 90min.The back whiteness is broken up in the calcined kaolin depolymerization can reach 93%, and fineness is about 2500 orders, and wherein Al content is 44.00%, and Si content is 55.10%.
Embodiment 3: raw ore and technological process are with embodiment 1.20 tons of kaolin dry weights, pulp density are 25%, and slurry pH is 3, vat powder add-on 4%, reaction times 60min, oxalic acid add-on 1%, reaction times 20min, wash to slurry pH be 6, pulp density 35% is delaminated to 3500 orders.Recording the Fuller's earth whiteness is that 82.0%, 1280 ℃ of sintering whiteness is 91.5%, and Fe content is 0.51%, and Al content is 37.82%.Whitening agent ammonium chloride amount 4%, 980 ℃ of calcining temperatures, time 120min.The back whiteness is broken up in the calcined kaolin depolymerization can reach 92%, and fineness is about 2500 orders, and wherein Al content is 44.57%, and Si content is 55.12%.
Embodiment 4: technological process is with embodiment 1.Raw ore adopts ZhangZhou, Fujian Province iron to dye kaolin, and it is that 60.8%, 1280 ℃ of sintering whiteness is 85.4% that ZhangZhou iron dyes the natural whiteness in kaolin washing back, and Al content is 38.25%, and Fe content is 0.94%.Essential mineral consists of kaolinite, contains a spot of quartz.Mineral structure contains a small amount of tubulose based on flakey.20 tons of kaolin dry weights, pulp density are 25%, and slurry pH is 2, vat powder add-on 2%, reaction times 40min, oxalic acid add-on 0.7%, reaction times 15min, wash to slurry pH be 7, pulp density 45% is delaminated to 2700 orders.Recording the Fuller's earth whiteness is that 81%, 1280 ℃ of sintering whiteness is 90.6%, and Fe content is 0.51%, and Al content is 36.33%.Whitening agent ammonium chloride amount 2%, 950 ℃ of calcining temperatures, the time is 60min.The back whiteness is broken up in the calcined kaolin depolymerization can reach 91.3%, and fineness is about 2500 orders, and wherein Al content is 44.7%, and Si content is 54.89%.
Embodiment 5
Technological process is with embodiment 1, and the kaolin raw ore is with embodiment 4.18.9 tons of kaolin dry weights, pulp density are 20%, and slurry pH is 2, vat powder add-on 3%, reaction times 50min, oxalic acid add-on 0.9%, reaction times 15min, wash to slurry pH be 6, pulp density 40% is delaminated to 3000 orders.Recording the Fuller's earth whiteness is that 81.7%, 1280 ℃ of sintering whiteness is 90.1%, and Fe content is 0.50%, and Al content is 37.4%.Whitening agent ammonium chloride amount 4%, 980 ℃ of calcining temperatures, time 90min.The back whiteness is broken up in the calcined kaolin depolymerization can reach 92.1%, and fineness is about 2500 orders, and wherein Al content is 44.0%, and Si content is 55.1%.
Embodiment 6: technological process is with embodiment 1, and the kaolin raw ore is with embodiment 4.20 tons of kaolin dry weights, pulp density are 25%, and slurry pH is 3, vat powder add-on 4%, reaction times 60min, oxalic acid add-on 1%, reaction times 20min, wash to slurry pH be 6, pulp density 35% is delaminated to 3500 orders.Recording the Fuller's earth whiteness is that 81.5%, 1280 ℃ of sintering whiteness is 91.2%, and Fe content is 0.50%, and Al content is 36.8%.Whitening agent ammonium chloride amount 3%, 980 ℃ of calcining temperatures, time 120min.The back whiteness is broken up in the calcined kaolin depolymerization can reach 91.7%, and fineness is about 2500 orders, and wherein Al content is 44.2%, and Si content is 55.05%.
Claims (10)
1. whitening method for washing iron-dyed kaolin is characterized in that may further comprise the steps:
1) the kaolin raw ore is washed, smash slurry after, rough sand, chip enter log washer, the ore pulp that contains fine sand enters screw classifier;
2) two portions ore pulp behind log washer and screw classifier is transported to the branch scavenger and carries out the sorting cyclical operation, and the ore pulp that comes out from minute scavenger enters concentration basin, and divides the fine sand of scavenger bottom to extract out with slush pump;
3) ore pulp in the concentration basin is transported to Bellmer, regulates pulp density;
4) add sulfuric acid stirring and adjusting slurry pH, add the SYNTHETIC OPTICAL WHITNER stirring and carry out bleaching action, add complexing agent and carry out complex reaction, add clear water washing ore pulp then;
5) wash when the pH value reaches neutrality when ore pulp, after the sedimentation water is discharged, make pulp density reach 35%～45% by mass percentage, it is standby to be transported to pulp storage tank then;
6) by slush pump ore pulp is sent into the machine of delaminating and carry out ultra-fine delaminating;
7) slurry after will delaminating carries out spraying drying, adds whitening agent then, send into beater after mixing and disperse to break up, the mixture powder of Fuller's earth and whitening agent;
8) the mixture powder with Fuller's earth and whitening agent is conveyed into the calcining kiln calcining, and calcining cools to room temperature with the furnace after finishing;
9) kaolin after will calcining is sent into beater and is carried out depolymerization and break up, washing iron-dyed kaolin.
2. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 2) in, the cyclical operation of 3 branch scavengers is adopted in described sorting cyclical operation.
3. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 3), and described adjusting pulp density is 15%～25% by mass percentage.
4. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 4), and described pH value is less than 4.
5. whitening method for washing iron-dyed kaolin as claimed in claim 1, it is characterized in that in step 4), described SYNTHETIC OPTICAL WHITNER is a V-Brite B, the add-on of SYNTHETIC OPTICAL WHITNER is 1%～3% of ore pulp total mass by mass percentage, pulp density in the described bleaching action is 15%～25% by mass percentage, and the time of bleaching action is 20～60min.
6. whitening method for washing iron-dyed kaolin as claimed in claim 1, it is characterized in that in step 4), described complexing agent is an oxalic acid, and the add-on of complexing agent is 0.7%～1% of ore pulp total mass by mass percentage, and the time of described complex reaction is 10～20min.
7. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 5), and described pH value is 6～7.
8. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 6), and described ultra-fine delaminating is that ore pulp is crushed to 1500～3500 orders.
9. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 7), and described whitening agent is an ammonium chloride, and the add-on of whitening agent is 1%～5% of the slurry total mass after delaminating by mass percentage.
10. whitening method for washing iron-dyed kaolin as claimed in claim 1 is characterized in that in step 8), and in the described incinerating process, temperature rise rate is 4～6 ℃/min, and the incinerating temperature is 950～1000 ℃, and the incinerating time is 60～120min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910112257A CN101602898B (en) | 2009-07-24 | 2009-07-24 | Whitening method for washing iron-dyed kaolin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910112257A CN101602898B (en) | 2009-07-24 | 2009-07-24 | Whitening method for washing iron-dyed kaolin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101602898A true CN101602898A (en) | 2009-12-16 |
| CN101602898B CN101602898B (en) | 2012-10-17 |
Family
ID=41468800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910112257A Expired - Fee Related CN101602898B (en) | 2009-07-24 | 2009-07-24 | Whitening method for washing iron-dyed kaolin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101602898B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557057A (en) * | 2011-12-28 | 2012-07-11 | 攀枝花学院 | Active argil and preparation method thereof |
| CN102583412A (en) * | 2012-01-17 | 2012-07-18 | 合肥工业大学 | Method for carrying out deironing and whitening on kaolin |
| CN102675930A (en) * | 2012-04-26 | 2012-09-19 | 中南大学 | Method for preparing double-90 white filler from bauxite tailing |
| CN104045092A (en) * | 2014-06-26 | 2014-09-17 | 茂名高岭科技有限公司 | Method for preparing activated kaolin by washing kaolin with water |
| CN105329908A (en) * | 2015-11-20 | 2016-02-17 | 中国高岭土有限公司 | Kaolin bleaching method |
| CN107010634A (en) * | 2017-03-09 | 2017-08-04 | 兖矿北海高岭土有限公司 | A kind of repeatedly compound kaolin bleaching production technology |
| CN107805043A (en) * | 2017-11-22 | 2018-03-16 | 龙岩高岭土有限公司 | A kind of method that thin mine tailing and kaolin inferior prepare medium-to-high grade kaolin clay for ceramic |
| CN109911911A (en) * | 2019-04-11 | 2019-06-21 | 杨天睿 | A kind of method of whitening and talcum of impure talcum mud |
| 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 |
| CN111646481A (en) * | 2020-06-11 | 2020-09-11 | 漳州阳盛贸易有限公司 | Kaolin for preparing heavy oil catalytic cracking catalyst and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1018996B (en) * | 1989-10-12 | 1992-11-11 | 苏宜水 | Bleaching technology for removing iron by kaolin |
| IT1243828B (en) * | 1990-10-11 | 1994-06-28 | Consiglio Nazionale Ricerche | PROCESS FOR THE REMOVAL OF IRON FROM CONCENTRATES OF CAOLINE, QUARTZ AND OTHER MATERIALS OF INDUSTRIAL INTEREST. |
| CN101445249B (en) * | 2008-12-28 | 2010-09-01 | 梁明 | Method for bleaching high-concentration kaolin pulp |
-
2009
- 2009-07-24 CN CN200910112257A patent/CN101602898B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557057A (en) * | 2011-12-28 | 2012-07-11 | 攀枝花学院 | Active argil and preparation method thereof |
| CN102557057B (en) * | 2011-12-28 | 2014-05-14 | 攀枝花学院 | Active argil and preparation method thereof |
| CN102583412A (en) * | 2012-01-17 | 2012-07-18 | 合肥工业大学 | Method for carrying out deironing and whitening on kaolin |
| CN102675930A (en) * | 2012-04-26 | 2012-09-19 | 中南大学 | Method for preparing double-90 white filler from bauxite tailing |
| CN104045092B (en) * | 2014-06-26 | 2016-03-23 | 茂名高岭科技有限公司 | A kind of processing method washing kaolin with water and prepare alukalin |
| CN104045092A (en) * | 2014-06-26 | 2014-09-17 | 茂名高岭科技有限公司 | Method for preparing activated kaolin by washing kaolin with water |
| CN105329908A (en) * | 2015-11-20 | 2016-02-17 | 中国高岭土有限公司 | Kaolin bleaching method |
| CN107010634A (en) * | 2017-03-09 | 2017-08-04 | 兖矿北海高岭土有限公司 | A kind of repeatedly compound kaolin bleaching production technology |
| CN107805043A (en) * | 2017-11-22 | 2018-03-16 | 龙岩高岭土有限公司 | A kind of method that thin mine tailing and kaolin inferior prepare medium-to-high grade kaolin clay for ceramic |
| CN107805043B (en) * | 2017-11-22 | 2020-11-06 | 龙岩高岭土股份有限公司 | Method for preparing kaolin for medium-high grade ceramics from fine tailings and poor-quality kaolin |
| CN109911911A (en) * | 2019-04-11 | 2019-06-21 | 杨天睿 | A kind of method of whitening and talcum of impure talcum mud |
| 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 |
| CN111646481A (en) * | 2020-06-11 | 2020-09-11 | 漳州阳盛贸易有限公司 | Kaolin for preparing heavy oil catalytic cracking catalyst and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101602898B (en) | 2012-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101602898B (en) | Whitening method for washing iron-dyed kaolin | |
| CN101723391B (en) | Bleaching production method for washing iron-dyed kaolin | |
| CN101875129B (en) | Method for comprehensive utilization of high-iron bauxite | |
| CN107185708B (en) | A method of high-purity quartz is prepared with tailing | |
| CN101306426B (en) | Method for extracting iron washed ore from fly ash or slag | |
| CN100569381C (en) | The iron-removing concentrating process of potassic feldspar | |
| CN105859167A (en) | Method for preparing white and high-purity anhydrous calcium sulfate by phosphogypsum | |
| CN103086390A (en) | Technique for efficiently removing iron from kaolin | |
| CN102069033A (en) | Method for separating and extracting feldspar ore with complex impurity components | |
| CN100537041C (en) | A milling enriched technics for celestine ore | |
| CN105289837A (en) | Process adopting barite-fluorite paragenic ore for preparing barite powder | |
| CN100564554C (en) | A kind of from ion adsorption type rare earth ore the method for synchronously reclaiming porcelain clay and rare earth | |
| CN103752401A (en) | Potash feldspar iron removal process | |
| CN110328047B (en) | Method for preparing ceramic raw material from granite stone sawn mud stone powder | |
| CN104946895A (en) | Rare earth compound recycling method utilizing waste rare earth polishing powder | |
| CN102145904A (en) | Method for extracting alumina from fly ash | |
| CN105921258A (en) | Method for impurity removal and whitening of potassium feldspar | |
| WO2024141117A1 (en) | Method for extracting lithium from spodumene while recovering low-iron and low-sulfur silicon-aluminum micro powder, high-purity gypsum, tantalum-niobium concentrate and lithium-rich iron material | |
| CN106966416A (en) | A kind of method that high purity aluminium oxide is extracted from coal-powder boiler flyash | |
| CN114752774A (en) | Method for separating iron and aluminum from red mud | |
| CN102897816A (en) | Deep recycling method of red mud | |
| CN103861723B (en) | The method of separation and Extraction microfine tantalum-niobium concentrate | |
| US9346934B2 (en) | Method for producing nanometer lithopone from electrolytic zinc acid leaching residue | |
| CN219731021U (en) | Spodumene smelting slag recycling comprehensive utilization system | |
| CN108004410A (en) | A kind of extracting method of rare earth silicate crystals element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20150724 |
|
| EXPY | Termination of patent right or utility model |