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Lithium mine tailing lightweight ceramic sheet material manufacturing method

A technology of light-weight ceramics and a manufacturing method, which is applied in the direction of ceramic products, ceramic material production, clay products, etc., can solve the problems of high cost, large heat absorption and energy consumption of refractory materials, etc., and achieves lower firing temperature, lower production cost, The effect of shortening the firing cycle

Inactive Publication Date: 2018-11-30
江西庾岭晶硕新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the firing of saggers, refractory materials absorb heat and consume a lot of energy, so the cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for making a lithium tailings lightweight ceramic plate, comprising the following steps:

[0020] 1) Take the raw materials for dry milling, and mix them to obtain a mixture, which consists of 30wt% lithium tailings, 60wt% kaolin, 7wt% talc, and 3wt% foaming agent;

[0021] 2) adding water to the mixed material, stirring, granulating, drying, and sieving to obtain the granular material;

[0022] 3) Put the granules into a sagger, lay them flat and then fire them, and obtain a light ceramic plate after cooling.

[0023] The blowing agent described in step 1) is silicon carbide. The final firing temperature in step 3) is 1100-1200 degrees. The content of lithium element in the lithium tailings in step 1) is not less than 1wt%, and the content of iron element is not less than 0.5%.

[0024] The cooling in step 3) includes the first rapid cooling section, the second slow cooling section, and the third tail cooling section, and the cooling time is different accor...

Embodiment 2

[0026] A method for making a lithium tailings lightweight ceramic plate, comprising the following steps:

[0027] 1. Take the raw materials for dry milling, and mix them to obtain a mixture. The composition of the mixture is 85wt% of lithium tailings, 10wt% of kaolin, 3wt% of talc, and 2wt% of foaming agent;

[0028] 2) adding water to the mixed material, stirring, granulating, drying, and sieving to obtain the granular material;

[0029] 3) Put the granular material into a sagger, compact it, and then fire it, and obtain a light-weight ceramic plate after cooling.

[0030] The blowing agent described in step 1) is silicon carbide. The final firing temperature in step 3) is 1100-1200 degrees. The content of lithium element in the lithium tailings in step 1) is not less than 1wt%, and the content of iron element is not less than 0.5%.

[0031] The cooling in step 3) comprises the first rapid cooling section and the second rapid cooling section, and the first rapid cooling se...

Embodiment 3

[0033] A method for making a lithium tailings lightweight ceramic plate, comprising the following steps:

[0034] 1) Take the raw materials for dry milling, and mix them to obtain a mixture. The composition of the mixture is 60wt% of lithium tailings, 30wt% of kaolin, 9.8wt% of talc, and 0.2wt% of foaming agent;

[0035] 2) adding water to the mixed material, stirring, granulating, drying, and sieving to obtain the granular material;

[0036] 3) Put the granules into a sagger, lay them flat and then fire them, and obtain a light ceramic plate after cooling.

[0037] The blowing agent described in step 1) is silicon carbide. , The final firing temperature in step 3) is 1100-1200 degrees. The content of lithium element in the lithium tailings in step 1) is not less than 1wt%, and the content of iron element is not less than 0.5%.

[0038] The cooling in step 3) includes the first rapid cooling section, the second slow cooling section, and the third tail cooling section, and t...

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Abstract

The invention relates to a lithium mine tailing lightweight ceramic sheet material manufacturing method. The sheet material comprises the following raw materials: 30 to 85 wt% of lithium mine tailing,10 to 60 wt% of kaolin, 3 to 10 wt% of powdered steatile, and 0.2 to 3 wt% of a foaming agent; the manufacturing method comprises the following steps: 1) taking raw materials for dry-method pulverizing, mixing the raw materials in proportion to obtain a mixture; 2) adding water to the mixture, and performing steps of stirring, granulating, drying, and sieving to obtain a pellet; and 3) placing the pellet in a crucible, sintering the pellet after spreading, and cooling the pellet to obtain the lightweight ceramic sheet material. The method utilizes lithium mine tailing to produce the lightweight ceramic sheet material, the lithium mine tailing contains a certain amount of lithium and iron elements, the sintering temperature is significantly reduced, the sintering cycle is shortened, energyconsumption can be saved, and production cost can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of preparation of light ceramic plates, in particular to a method for manufacturing light ceramic plates from lithium tailings. Background technique [0002] When mining lithium feldspar, lepidolite, and spodumene concentrates, a large amount of lithium tailings will be produced. At present, because lithium tailings have no effective means of utilization, most of them are discarded and piled up or simply landfilled, which not only causes waste of resources, but also causes secondary environmental pollution. A technical treatment is needed to improve resource utilization. [0003] Lightweight ceramic plate is an excellent building exterior material with low density, high strength, high refractoriness, good thermal shock resistance and low thermal conductivity. Its preparation method is to mix the raw materials including the foaming agent, put them in a sagger, and then sinter at high temperature. The sinteri...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B33/132
CPCC04B33/132C04B38/02C04B2235/3445C04B2235/3826Y02P40/60
Inventor 钟路生聂复南
Owner 江西庾岭晶硕新材料有限公司
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