Preparation technology of kaolin for large thin-plate bricks

A preparation process, a technology of kaolin, applied in the field of preparation process of kaolin for thin-plate large bricks, can solve the problems of inability to increase the length and width, and achieve the effects of improving flexural strength and plasticity, strong adsorption capacity, and increasing specific surface area

Active Publication Date: 2020-04-10
漳州市龙华矿产有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The kaolin finished product that the present inventor makes according to the above-mentioned method, can only prepare the thin-plate large ceramic tile that length is less than 1.5m, width is less than 0.8m, and thickness is 5mm according to the method disclosed by the Chinese invention patent whose patent announcement number is CN1253406C, cannot make the length and the width is further increased

Method used

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  • Preparation technology of kaolin for large thin-plate bricks
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  • Preparation technology of kaolin for large thin-plate bricks

Examples

Experimental program
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Embodiment 1

[0041] Embodiment 1: A kind of preparation technology of kaolin for thin plate large brick, and prepare and obtain through following steps:

[0042]Step 1: Mining to remove impurities, mining Zhangzhou kaolin mineral material, and preliminarily separating clay and impurities to obtain kaolin base material; Step 2: pulping and removing sand, pulping kaolin base material and performing sand removal to obtain kaolin slurry initial material;

[0043] Step 3: chemical bleaching, transporting the primary kaolin slurry to the slurry storage tank of the high-speed mixing tank, adding sulfuric acid solution and sodium dithionite solution, the mass ratio of the sulfuric acid solution to the primary kaolin slurry is 0.3:100 to 0.8:100, The mass ratio of sodium dithionite solution to kaolin slurry primary material is 0.6:100~1.0:100, adjust the pH value of the mixed solution to 2.0~3.0, and stir at a speed of 140~180 rpm for 40~45 minutes in a high-speed mixing tank , to obtain kaolin sl...

Embodiment 2

[0050] Example 2: A preparation process of kaolin for large thin-slab bricks. The difference from Example 1 is that the components of the modified material in Step 6 and their corresponding weight percentages are shown in Table 1.

[0051] Each component and weight percentage thereof in table 1 embodiment 1-2

[0052]

Embodiment 3

[0053] Example 3: A preparation process of kaolin for thin-slab bricks. The difference from Example 1 is that the weight ratio of the modified material in step 6 to the kaolin intermediate filter cake is 1:8.

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Abstract

The invention discloses a preparation technology of kaolin for large thin-plate bricks, and relates to the field of kaolin processing technologies. The preparation technology comprises the following steps: 1, mining, and removal of impurities; 2, pulping and desanding; 3, chemical bleaching; 4, washing and dehydrating to obtain a kaolin ore pulp final material; 5, drying and pulverizing to obtaina kaolin intermediate filter cake; 6, addition of a modifying material according to a weight ratio of the modifying material to the kaolin intermediate filter cake of 1:(4-8), and uniform mixing; 7, filter pressing dehydration; and 8, drying and crushing to obtain the kaolin for large thin-plate bricks, wherein the modifying material in step 6 comprises 3-5 wt% of bentonite, 0.6-1 wt% of sodium humate; 2-5 wt% of coal series kaolinite, 0.03-0.05 wt% of sodium carboxymethyl cellulose and 0.01-0.02 wt% of a coupling agent. The method has the advantages of improving the plasticity index of the kaolin and the breaking strength of a dry blank and improving the maximum size of the kaolin when the kaolin is used for manufacturing large thin-plate bricks.

Description

technical field [0001] The invention relates to the field of kaolin processing technology, more specifically, it relates to a preparation technology of kaolin for thin plate large bricks. Background technique [0002] Thin-slab tiles, commonly known as ceramic thin-slabs, are tiles that are thinner and lighter than ordinary tiles. Thin-slab tiles are plate-shaped ceramic products made of clay and other inorganic non-metallic materials through high-temperature calcination at 1200°C. [0003] In the Chinese invention patent with the notification number CN1253406C, a large-scale thin-plate-shaped sintered body and its manufacturing method are disclosed. Clay is used as the main component, and their powders are mixed to form a thin plate with needle-like crystals oriented uniformly in the same direction, and then fired at a temperature below the crystal transition temperature of low-temperature wollastonite to manufacture large-scale thin-plate ceramic tiles in a good product s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/04C04B33/36
CPCC04B33/04C04B33/36
Inventor 罗书明杨月瑛周勇鹏
Owner 漳州市龙华矿产有限公司
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