CN102862995A - Preparation method of calcined kaolin with low abrasion value - Google Patents
Preparation method of calcined kaolin with low abrasion value Download PDFInfo
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- CN102862995A CN102862995A CN2012103823266A CN201210382326A CN102862995A CN 102862995 A CN102862995 A CN 102862995A CN 2012103823266 A CN2012103823266 A CN 2012103823266A CN 201210382326 A CN201210382326 A CN 201210382326A CN 102862995 A CN102862995 A CN 102862995A
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Abstract
The invention discloses a preparation method of calcined kaolin with a low abrasion value. Coal-series kaolin rock or kaolin is screened, washed, smashed, ground, wet-ground and dried to obtain raw materials, the raw materials are depolymerized, scattered and calcined to generate mature materials, and finally the mature materials are depolymerized and scattered to generate finished products. The coal-series kaolin rock or kaolin is coal-permian concomitant coal-series kaolin rock or kaolin, and molar ratio of silicon to aluminum is SiO2/Al2O3=1.9-2.1. Solid content of wet grinding mud is 42-50%, mud particle size (-2mu,%)>=93%, D50=0.3-0.8mu m. The particle size of the depolymerized and scattered raw materials is (-2mu,%)>=91.5%, D50=0.4-0.9mu m. By matching raw ore scientifically, optimizing raw material wet grinding process and controlling raw material scattering particle size distribution, a raw material abrasion value is controlled effectively, and the calcined kaolin with a low Einlehner abrasion value is obtained. Drug is not required in a preparation process, operation is convenient, cost is low, performance of product whiteness and covering power and the like can not be affected, and obtained products are easy to diffuse in a solution.
Description
Technical field
The present invention relates to a kind of calcination kleit preparation method, especially a kind of low wear(ing)value calcination kleit preparation method.
Background technology
Calcined Kaolin from Coal Bearing Strata, with characteristics such as its distinctive false six side's lamellar structures, high porosities, make it have the advantages such as the scattering of light rate is high, opacifying power is good, through high-purity and ultra-fine and good chemical stability and the insulativity of high whiteness after the calcining modification, make Calcined Kaolin from Coal Bearing Strata be widely used in the fields such as top-grade building material, paint, papermaking, rubber, plastics, cable, pottery in addition.
Different Application Areass is also different to the requirement of kaolin wear(ing)value.Especially in paper industry, kaolin is mainly used in two fields, and one is the filler that uses in papermaking (or claiming to copy paper) process, and another is the pigment that uses in the surface coated process, and the color stuffing amount accounts for 10%～35%, needs lower wear(ing)value.Will increase the Web forming silk screen in the wearing and tearing when White Board (comprising calcined kaolin in formulation for coating material) contacts of the passivation of the wearing and tearing on the paper machine, paper cutters, press plate and the wearing and tearing on any surface of contacting with calcined kaolin generally if the wear(ing)value of calcined kaolin is higher.
Kaolinic wear(ing)value is an important indicator that affects its using value.The existing horizontal 30mg～50mg/100000 of calcined kaolin Einlehner wear(ing)value of China turns, and the Ansilex 93Einlehner wear(ing)value level that the BASF of kaolin factory of Georgia State, USA McIntyre produces can reach 20mg/100000 and turns following.Accordingly, the wear(ing)value index is one of important factor of restriction China calcined kaolin outlet.
At present, the Patents that reduces the calcined kaolin wear(ing)value mainly contains: application number 4381948 United States Patent (USP)s propose, and adopt special thin kaolin raw material (100% weighs less than 1um) as the charging of calcining furnace.
Application number 5022924 United States Patent (USP)s disclose a kind of method that reduces the calcined kaolin abradability.The method is mixed this kaolin before being included in calcining with the segmentation silica.
Application number 99805732.0 Chinese patent application " low abrasion calcined kaolin pigments and enhancing filter method " disclose a kind of by controlled leaching silica from pigment, the preferred caustic solution that uses is separated out silica from calcined kaolin, reduce the method for the abrasion that contain the silica calcined kaolin pigments.
Although aforesaid method can reduce the abrasion of calcined kaolin, these methods generally can cause the brightness of product or the loss of other desired properties.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of low wear(ing)value calcination kleit preparation method, to obtain the calcined kaolin of high-performance, low wear(ing)value.
For solving the problems of the technologies described above, the technical solution used in the present invention is: its with coal series kaolin rock or kaolin through screening, washup, pulverizing, abrasive dust, slurrying, wet-milling, be dried to raw material, raw material are mature calcined material after depolymerization is broken up, and the grog depolymerization is broken up obtain finished product at last;
Described coal series kaolin rock or kaolin are coal series kaolin rock or the kaolin with coal association Permo-Carboniferous period, silica alumina ratio: SiO
2/ Al
2O
3=1.9～2.1;
Described wet-milling mud solid content 42～50%, mud granularity (2 μ, %) 〉=93%, D50=0.3～0.8 μ m;
The granularity of described raw material after depolymerization is broken up is: (2 μ, %) 〉=91.5%, D50=0.4～0.9 μ m.
The processing condition of calcining of the present invention are: 850～950 ℃ of temperature, soaking time 0.5～1.5h; The granularity of described grog after depolymerization is broken up is: (2 μ, %) 〉=85%, D50=0.5～1.0 μ m.
Add the Sodium hexametaphosphate 99 of raw material weight≤5.5 ‰ in slurrying of the present invention, the wet-milling process, or add the sodium polyacrylate of raw material weight≤6.5 ‰.Add Sodium hexametaphosphate 99 or the sodium polyacrylate of raw material weight 2.3～3 ‰ in the described pulping process, remaining Sodium hexametaphosphate 99 or sodium polyacrylate add in the wet-milling process.
The beneficial effect that adopts technique scheme to produce is: the present invention breaks up size-grade distribution by science raw ore proportioning, optimization raw material wet-grinding technology and relative device, control raw material, thereby effectively control the raw material wear(ing)value, thereby obtain the calcined kaolin of low Einlehner wear(ing)value.
The present invention and then prevent the generation, control grog size-grade distribution etc. of mullite and Free quartz by the control calcination condition can obtain the calcined kaolin that the Einlehner wear(ing)value turns less than 25mg/100000.
Need not to add medicament in the process of the present invention, convenient operation, cost is low, can not affect the performances such as product whiteness and opacifying power, and the product that obtains is easy to disperse in solution.
Embodiment
The present invention is further detailed explanation below in conjunction with specific embodiment.
Embodiment 1: this low abrasion calcination kleit preparation method adopts following technique.
1, raw ore is selected the coal series kaolin rock with coal association Permo-Carboniferous period, silica alumina ratio: SiO
2/ Al
2O
3=2.0; Select impurity removal stone and impure raw ore, water rinses out the silt on raw ore surface;
2, powdery, 325 mesh screen residues≤5% are pulverized, then ground to form to the raw ore after will cleaning;
3, powder raw material carries out wet-milling: employing equipment is Ultrafine Grinding and machine for cutting charge into pieces, and grinding medium is selected from the zirconium aluminium composite bead that wears away less than 1 ‰, and its proportion is 3.0～3.5g/cm
3, particle diameter proportioning (1～1.5mm): (1.5～2mm): (2～2.5mm)=(0～10%): (30～40%): (50～60%); Dispersion agent is selected Sodium hexametaphosphate 99, and the dispersion agent addition manner is to add 2.3 ‰ in pulping process, drip a part in the wet-milling process, but total amount is Sodium hexametaphosphate 99=5.5 ‰.The solid content of wet-milling mud is 43%, mud granularity (2 μ, %)=95%, D50=0.62 μ m;
4, the spray-dried raw material that obtain of the raw material after the wet-milling;
5, raw material are broken up and are used high speed Depolymerizing thrasher, granularity (2 μ, %)=93.5%, D50=0.68 μ m; The raw material Einlehner wear(ing)value that obtains is that 8mg/100000 turns;
6, raw material mature calcined material after depolymerization is broken up, calcination condition: 850 ℃ of temperature, soaking time 1h;
7, grog breaks up twice, obtains calcined kaolin, uses equipment to be the high speed Depolymerizing thrasher, granularity (2 μ, %)=87%, D50=0.79 μ m.
The resulting calcined kaolin of present embodiment is measured through Einlehner abrasion instrument (AT-1000), and its wear(ing)value is that 18mg/100000 turns, and measures through blancometer (YQ-Z-48B), and its whiteness is 93.1.
Embodiment 2: this low abrasion calcination kleit preparation method is except following difference, and all the other are identical with embodiment 1.
Step 1, raw ore are selected the kaolin concentrate with coal association Permo-Carboniferous period, silica alumina ratio: SiO
2/ Al
2O
3=1.9;
The solid content of step 3, wet-milling mud is 44%, mud granularity (2 μ, %)=94%, D50=0.65 μ m; Dispersion agent is selected sodium polyacrylate, and the dispersion agent addition manner is to add 3 ‰ in pulping process, drips a part in the wet-milling process, but total amount sodium polyacrylate=6.5 ‰.
Step 5, raw material are broken up granularity (2 μ, %)=92.5%, D50=0.72 μ m; The raw material Einlehner wear(ing)value that obtains is that 10mg/100000 turns;
Step 6, calcination condition: 875 ℃ of temperature, soaking time 1h;
Step 7, grog are broken up granularity (2 μ, %)=86.5%, D50=0.81 μ m.
The resulting calcined kaolin of present embodiment is measured through the Einlehner abrasion instrument, and its wear(ing)value is that 19mg/100000 turns, and its whiteness is 93.5.
Embodiment 3: this low abrasion calcination kleit preparation method is except following difference, and all the other are identical with embodiment 1.
Step 1, raw ore are selected the kaolin concentrate with coal association Permo-Carboniferous period, silica alumina ratio: SiO
2/ Al
2O
3=2.1;
The solid content of step 3, wet-milling mud is 42%, mud granularity (2 μ, %)=93.5%, D50=0.8 μ m; Dispersion agent is selected sodium polyacrylate, and the dispersion agent addition manner is to add 2.3 ‰ in pulping process, drips a part in the wet-milling process, but total amount sodium polyacrylate=6.0 ‰.
Step 5, raw material are broken up granularity (2 μ, %)=92%, D50=0.9 μ m; The raw material Einlehner wear(ing)value that obtains is that 10mg/100000 turns;
Step 6, calcination condition: 900 ℃ of temperature, soaking time 0.5h;
Step 7, grog are broken up granularity (2 μ, %)=86%, D50=1.0 μ m.
The resulting calcined kaolin of present embodiment is measured through the Einlehner abrasion instrument, and its wear(ing)value is that 20mg/100000 turns, and its whiteness is 94.
Embodiment 4: this low abrasion calcination kleit preparation method is except following difference, and all the other are identical with embodiment 1.
The solid content of step 3, wet-milling mud is 50%, mud granularity (2 μ, %)=93%, D50=0.3 μ m; Dispersion agent is selected Sodium hexametaphosphate 99, and the dispersion agent addition manner is to add 3 ‰ in pulping process, drip a part in the wet-milling process, but total amount is Sodium hexametaphosphate 99=4.5 ‰.
Step 5, raw material are broken up granularity (2 μ, %)=91.5%, D50=0.4 μ m; The raw material Einlehner wear(ing)value that obtains is that 11mg/100000 turns;
Step 6, calcination condition: 950 ℃ of temperature, soaking time 1.5h;
Step 7, grog are broken up granularity (2 μ, %)=85%, D50=0.5 μ m.
The resulting calcined kaolin of present embodiment is measured through the Einlehner abrasion instrument, and its wear(ing)value is that 24.6mg/100000 turns, and its whiteness is 94.5.
Claims (4)
1. one kind low wear(ing)value calcination kleit preparation method, it is characterized in that: its with coal series kaolin rock or kaolin through screening, washup, pulverizing, abrasive dust, slurrying, wet-milling, be dried to raw material, raw material are mature calcined material after depolymerization is broken up, and the grog depolymerization is broken up obtain finished product at last;
Described coal series kaolin rock or kaolin are coal series kaolin rock or the kaolin with coal association Permo-Carboniferous period, silica alumina ratio: SiO
2/ Al
2O
3=1.9～2.1;
Described wet-milling mud solid content 42～50%, mud granularity (2 μ, %) 〉=93%, D50=0.3～0.8 μ m;
The granularity of described raw material after depolymerization is broken up is: (2 μ, %) 〉=91.5%, D50=0.4～0.9 μ m.
2. low wear(ing)value calcination kleit preparation method according to claim 1, it is characterized in that: the processing condition of described calcining are: 850～950 ℃ of temperature, soaking time 0.5～1.5h; The granularity of described grog after depolymerization is broken up is: (2 μ, %) 〉=85%, D50=0.5～1.0 μ m.
3. low wear(ing)value calcination kleit preparation method according to claim 1 and 2 is characterized in that: add the Sodium hexametaphosphate 99 of raw material weight≤5.5 ‰ in described slurrying, the wet-milling process, or add the sodium polyacrylate of raw material weight≤6.5 ‰.
4. low wear(ing)value calcination kleit preparation method according to claim 3, it is characterized in that: add Sodium hexametaphosphate 99 or the sodium polyacrylate of raw material weight 2.3～3 ‰ in the described pulping process, remaining Sodium hexametaphosphate 99 or sodium polyacrylate add in the wet-milling process.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402012A (en) * | 2014-10-29 | 2015-03-11 | 唐山麦迪逊高岭土有限公司 | Ultra-fine high-whiteness calcined kaolin preparation method |
| CN104477929A (en) * | 2015-01-06 | 2015-04-01 | 山西金宇科林科技有限公司 | Method for preparing high-solid-content and low-viscosity kaolin slurry |
| CN104673099A (en) * | 2015-02-12 | 2015-06-03 | 柳州豪祥特科技有限公司 | Method for producing polishing powder by utilizing kaolin |
| CN114835132A (en) * | 2022-06-16 | 2022-08-02 | 内蒙古三鑫高岭土有限责任公司 | High-efficiency energy-saving process for processing coal-series kaolin by dry-wet method |
| CN115072730A (en) * | 2022-06-16 | 2022-09-20 | 内蒙古三鑫高岭土有限责任公司 | Energy-saving process for calcining coal series kaolin by double kilns |
| CN114835132B (en) * | 2022-06-16 | 2024-07-16 | 内蒙古三鑫高岭土有限责任公司 | High-efficiency energy-saving process for processing coal-series kaolin by dry and wet method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415577A (en) * | 2002-09-28 | 2003-05-07 | 内蒙古三保高岭土有限公司 | Treatment and production technique for calcining kaolin |
| CN102491356A (en) * | 2011-11-30 | 2012-06-13 | 唐山麦迪逊高岭土有限公司 | Preparation method of calcined kaolin with high oil absorption |
-
2012
- 2012-10-11 CN CN2012103823266A patent/CN102862995A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1415577A (en) * | 2002-09-28 | 2003-05-07 | 内蒙古三保高岭土有限公司 | Treatment and production technique for calcining kaolin |
| CN102491356A (en) * | 2011-11-30 | 2012-06-13 | 唐山麦迪逊高岭土有限公司 | Preparation method of calcined kaolin with high oil absorption |
Non-Patent Citations (4)
| Title |
|---|
| 宋宝祥: "煤系煅烧高岭土不同生产工艺产品质量的比较及对纸张涂层性能的影响", 《非金属矿》 * |
| 李三华等: "助磨剂在煤系高岭土湿法超细研磨中的应用试验", 《中国非金属矿工业导刊》 * |
| 陈强等: "煅烧高岭土粒度影响因素分析与探讨", 《中国非金属矿工业导刊》 * |
| 黄亮国等: "高岭土最佳分散条件的确定与探讨", 《中国造纸》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402012A (en) * | 2014-10-29 | 2015-03-11 | 唐山麦迪逊高岭土有限公司 | Ultra-fine high-whiteness calcined kaolin preparation method |
| CN104477929A (en) * | 2015-01-06 | 2015-04-01 | 山西金宇科林科技有限公司 | Method for preparing high-solid-content and low-viscosity kaolin slurry |
| CN104673099A (en) * | 2015-02-12 | 2015-06-03 | 柳州豪祥特科技有限公司 | Method for producing polishing powder by utilizing kaolin |
| CN114835132A (en) * | 2022-06-16 | 2022-08-02 | 内蒙古三鑫高岭土有限责任公司 | High-efficiency energy-saving process for processing coal-series kaolin by dry-wet method |
| CN115072730A (en) * | 2022-06-16 | 2022-09-20 | 内蒙古三鑫高岭土有限责任公司 | Energy-saving process for calcining coal series kaolin by double kilns |
| CN114835132B (en) * | 2022-06-16 | 2024-07-16 | 内蒙古三鑫高岭土有限责任公司 | High-efficiency energy-saving process for processing coal-series kaolin by dry and wet method |
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Application publication date: 20130109 |