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Preparation method of lithium tailing foam ceramic insulation board

A technology for foamed ceramics and lithium tailings, which is used in ceramic products, ceramic material production, clay products, etc., can solve problems such as low strength and limited application scenarios, and achieve excellent performance, low thermal conductivity, and uniform mixing effect.

Inactive Publication Date: 2019-04-26
TANGSHAN YANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN 108911778 A proposes "a manufacturing method of lithium tailings lightweight ceramic plates", which can make full use of lithium tailings, and the prepared light ceramic plates can be used as building heat insulation materials, interior and exterior decoration materials , has the characteristics of fire prevention, heat insulation, and sound absorption, but its strength is low, and its application scenarios are extremely limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In parts by weight, carbonize 60 parts of lithium tailings, 23 parts of high-alumina hard kaolin, 17 parts of flux raw material shale, and 0.4 parts of porogen. After ball milling and spray granulation, the fabric is 600mm×600mm The specification of ×25mm, the moisture content is controlled to be less than 0.1%, and the finished product is fired in a roller kiln at 1190°C.

Embodiment 2

[0020] In terms of parts by weight, 65 parts of lithium tailings, 20 parts of high-alumina hard kaolin, 5 parts of flux raw material shale, and 0.4 parts of pore-forming agent silicon carbide are ball milled and spray granulated, and the cloth is 600mm× The specification of 600mm×25mm, after drying, the moisture content is controlled to be <0.1%, and the finished product is fired in a roller kiln at 1170°C.

[0021] The foamed ceramic insulation board prepared in the above-mentioned examples 1 and 2 has a bulk density of 0.2-0.4 g / cm 3 , the thermal conductivity is 0.08-0.1W / M.K, the compressive strength is 1.5-2Mpa, and the flexural strength is >0.5Mpa. It is an excellent ceramic insulation board for building exterior walls.

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Abstract

The invention relates to a preparation method of a lithium tailing foam ceramic insulation board. The preparation method comprises the following steps: crushing lithium tailings, high-aluminum hard kaolin, shales and silicon carbide, removing impunities and controlling the particle size to 40-60 meshes; weighing the following basic materials in percentage by weight: 60-65% of the lithium tailings,20-30% of the high-aluminum hard kaolin and 15-20% of flux raw material shales; weighing a pore-forming agent silicon carbide which is 0.4% of the total weight of the basic materials; pouring the materials, spheres and water into a ball mill for wet milling at a ratio of 1:2:0.6 and controlling the fineness to below 1.5% as the sieve residue; performing spray granulation, controlling the particlesize to 60-120 meshes (greater than or equal to 80%) and the moisture content to below 1.5%; aging granulated powder for 24 hours and distributing the powder in a mould with a material distribution machine; sintering the powder into a finished product with a roller kiln or a tunnel kiln under the condition that a temperature curve is met, wherein under the temperature curve, the formula becomes aliquid phase, and the pore-forming agent is resolved. According to the preparation method, the ceramic insulation board of an outer wall, which is small in density, high in strength and low in heat conductivity coefficient, can be produced.

Description

technical field [0001] The invention relates to a preparation method of a lithium tailings foamed ceramic insulation board, which belongs to the utilization technology of industrial solid waste. Background technique [0002] The use of lithium tailings is narrow, which will have a certain impact on environmental pollution and is not conducive to sustainable development. Therefore, exploring the use of lithium tailings to prepare environmentally friendly building materials has great economic and social effects on improving the living environment of residents and increasing the utilization rate of mineral resources. [0003] Lithium tailings is a siliceous feldspar raw material, a good flux raw material, its composition is close to the composition of foamed ceramics, it can be used as the main raw material of foamed ceramics, and some necessary auxiliary raw materials are added to research and produce development. Bubble ceramics. Chinese patent CN 108911778 A proposes "a ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/138C04B35/626C04B33/04
CPCC04B33/04C04B33/138C04B35/6261C04B35/62695C04B38/02C04B2235/3826C04B2235/6562C04B2235/77C04B2235/96C04B2235/9607C04B38/0067Y02P40/60
Inventor 贾小华刘欢郭明军
Owner TANGSHAN YANSHAN IRON & STEEL CO LTD
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