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Kaolin composition and preparation method thereof

A kaolin and composition technology, applied in the field of kaolin composition and its preparation, can solve the problems of narrow direct application range, low drying strength, ore dressing limitation, etc., and achieve the effects of low cost, high drying strength and large drying strength

Active Publication Date: 2015-04-01
广东高瓷科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of kaolin has beneficiation restrictions
[0024] The existing commercialized primary kaolin has a wide range of sources, but its direct application range is narrow due to its low dry strength and poor plasticity

Method used

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  • Kaolin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Prepare the kaolin composition of following composition (by weight percentage):

[0052] 0.2% starch, the balance is kaolin.

[0053] According to the above material ratio, the auxiliary material is water, and the corresponding kaolin composition is prepared according to the following steps:

[0054] Step a, preparation solution: preparation mass fraction is the starch solution of 35%;

[0055] Step b, ball milling kaolin: wet ball milling kaolin for 15 minutes;

[0056] Step c, adding starch: in the blender, spray the starch solution into the kaolin obtained in step b under high pressure;

[0057] Step d, stirring: stirring the kaolin slurry obtained in step c at 100 r / min for 1 h;

[0058] Step e, stacking: stacking the kaolin slurry obtained in step d for 2 months to obtain the kaolin composition.

Embodiment 2

[0060] Prepare the kaolin composition of following composition (by weight percentage):

[0061] 1% tapioca starch;

[0062] 10% urea;

[0063] The balance is kaolin.

[0064] According to the above material ratio, the auxiliary material is water, and the corresponding kaolin composition is prepared according to the following steps:

[0065] Step a, preparation solution: preparation mass fraction is respectively the cassava starch solution that mass fraction is 50% urea solution and mass fraction;

[0066] Step b, adding urea: add the urea solution prepared in step a to the kaolin slurry, and wet ball mill for 5 minutes;

[0067] Step c, press filter dehydration: the kaolin slurry obtained in step b is hydraulically dewatered;

[0068] Step d, adding starch: in a blender, spray the tapioca starch solution prepared in step a under high pressure in the kaolin slurry obtained in step c;

[0069] Step e, stirring: stirring the kaolin slurry obtained in step d at 20...

Embodiment 3

[0072] Prepare the kaolin composition of following composition (by weight percentage):

[0073] 0.6% oxidized starch (industrial grade);

[0074] 6.5% urea;

[0075] The balance is kaolin.

[0076] According to the above material ratio, the auxiliary material is water, and the corresponding kaolin composition is prepared according to the following steps:

[0077] Step a, preparation solution: preparation mass fraction is 50% urea solution and the oxidized starch solution that mass fraction is 35% respectively;

[0078] Step b, adding urea: add the urea solution prepared in step a to the kaolin slurry, and wet ball mill for 10 minutes;

[0079] Step c, press filter dehydration: the kaolin slurry obtained in step b is hydraulically dehydrated;

[0080] Step d, adding starch: in a blender, spray the oxidized starch solution prepared in step a into the kaolin slurry obtained in step c under high pressure;

[0081] Step e, stirring: stirring the kaolin slurry obtai...

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Abstract

The invention relates to a kaolin composition and a preparation method thereof, and in particular relates to a high-dry strength kaolin composition and a preparation method thereof. The composition consists of 0.2-1% of starch, 0-10% of urea and the balance of kaolin, wherein the starch comprises cassava starch and oxidized starch. Urea solution is filled into kaolin fluid, and the mixture is ball milled through a wet process; water is hydraulically filtered; then, starch solution is sprayed; and the kaolin composition is obtained through stirring and stacking. The dry strength of the kaolin composition is high and can reach above 6.0MPa at least and even above 10MPa; and the kaolin composition has the advantages of good plasticity, simplicity in technology and low cost.

Description

technical field [0001] The invention relates to a kaolin composition and a preparation method thereof, in particular to a high dry strength kaolin composition and a preparation method thereof. Background technique [0002] Minerals on the earth are mainly divided into three types: energy minerals, metallic minerals and non-metallic minerals. Kaolin is an important non-metallic mineral, and it is called the four major non-metallic minerals together with mica, quartz and calcium carbonate. Kaolin - one of the main raw materials for making porcelain. The color is white with gray or yellow, and it was named after it was first discovered in Gaoling Village, Dongxiang, Fuliang (now Jingdezhen), Jiangxi. The term "Gaolin" was first seen in the records of "Fuliang County Chronicles" in the 21st year of Emperor Kangxi of the Qing Dynasty. It was transliterated into Gaolin on the national standard and became an international term. [0003] Kaolin is mainly composed of kaolinite clu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/40C04B33/04
Inventor 邹亚剑
Owner 广东高瓷科技股份有限公司