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Light foamed ceramic heat insulation board prepared from tailings and preparation method thereof

A technology for foaming ceramics and thermal insulation boards, which is applied in the production and application of ceramic products and ceramic materials to achieve the effects of improving porosity, small thermal conductivity and low price.

Inactive Publication Date: 2020-04-03
安徽予初网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the use of stone coal to extract vanadium tailings and iron tailings to prepare foamed ceramic insulation boards

Method used

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  • Light foamed ceramic heat insulation board prepared from tailings and preparation method thereof
  • Light foamed ceramic heat insulation board prepared from tailings and preparation method thereof
  • Light foamed ceramic heat insulation board prepared from tailings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A lightweight foamed ceramic insulation board prepared from tailings, made of the following raw materials in parts by weight:

[0032]

[0033]

[0034] Among them, the main chemical components of the tailings powder for vanadium extraction from stone coal are shown in Table 1, and the main components of the iron tailings powder are shown in Table 2.

[0035] Table 1 Main chemical composition of tailings powder for vanadium extraction from stone coal

[0036]

[0037] Table 2 Main chemical composition of iron tailings powder

[0038]

[0039] Among them, the diameter of short alumina fibers is 1-4 μm, the length of short alumina fibers is 0.5-2.5 mm; the content of alumina is 95%,

[0040] The composite foaming agent is composed of silicon carbide and graphite in a mass ratio of 1:0.6.

[0041] The moisture content of the tailings powder for vanadium extraction from stone coal is less than 2wt%. According to the weight percentage, it is composed of the tai...

Embodiment 2

[0048] A lightweight foamed ceramic insulation board prepared from tailings, made of the following raw materials in parts by weight:

[0049]

[0050] Wherein, the vanadium extraction tailings powder and iron tailings powder of stone coal are the same as in Example 1.

[0051] The diameter of short alumina fibers is 1-4μm, the length of short alumina fibers is 0.5-2.5mm; the content of alumina is 93-96%,

[0052] The composite blowing agent is composed of graphite, lithium carbonate and calcium carbonate in a mass ratio of 1:0.8:0.5.

[0053] The moisture content of the tailings powder for vanadium extraction from stone coal is less than 2wt%. According to the weight percentage, it is composed of the tailings powder for vanadium extraction from stone coal with a particle size of 0.2-0.5mm 15wt%, and the particle size is 0.05- 0.2mm stone coal vanadium extraction tailings powder is 15wt%, and the balance is stone coal vanadium extraction tailings powder with a particle size...

Embodiment 3

[0060] A lightweight foamed ceramic insulation board prepared from tailings, made of the following raw materials in parts by weight:

[0061]

[0062] The composition of the tailings powder for vanadium extraction from stone coal is shown in Table 3, and the composition of the iron tailings powder is shown in Table 4.

[0063] Table 3 Main chemical composition of tailings powder for vanadium extraction from stone coal

[0064]

[0065] Table 4 Main chemical composition of iron tailings powder

[0066]

[0067] Wherein, the diameter of the alumina short fiber is 1-4 μm, the length of the alumina short fiber is 0.5-2.5 mm; the content of alumina is 96%.

[0068] The composite blowing agent is composed of silicon carbide and graphite in a mass ratio of 1:0.5.

[0069] The moisture content of the tailings powder for vanadium extraction from stone coal is less than 2wt%. According to the weight percentage, it is composed of the tailings powder for vanadium extraction fro...

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Abstract

The invention provides a lightweight foamed ceramic heat insulation board prepared from tailings and a preparation method thereof and relates to the technical field of heat insulation boards. The lightweight foamed ceramic heat insulation board prepared from the tailings is prepared from the following raw materials by weight: 28-35 parts of stone coal vanadium extraction tailing powder, 22 to 26 parts of iron tailing powder, 30 to 35 parts of kaolin, 4-7 parts of diatomite, 4-6 parts of talcum powder, 0.8 to 1.2 parts of sodium silicate, 0.6 to 1 part of zirconite, 3.5-5 parts of aluminum oxide short fibers, and 0.7-1 part of a composite foaming agent. The foamed ceramic heat insulation board prepared by the method is light in weight, high in strength, green and environment-friendly, goodin thermal insulation performance, flame-retardant, fireproof, damp-proof, freeze-proof and long in service life and is an excellent-quality ceramic insulation board.

Description

technical field [0001] The invention relates to the technical field of thermal insulation boards, in particular to a lightweight foamed ceramic thermal insulation board prepared from tailings and a preparation method thereof. Background technique [0002] As the most important solid waste at present, tailings are a kind of composite mineral raw material. In addition to containing a small amount of metal components, the main mineral components are gangue minerals, such as quartz, pyroxene, feldspar, garnet, hornblende Stone and its altered minerals, whose chemical composition is mainly oxides of iron, silicon, magnesium, calcium, and aluminum, accompanied by a small amount of phosphorus, sulfur, etc., are an important secondary resource. In the process of beneficiation, a large amount of tailings will be produced, most of which are piled up in tailings ponds. The accumulation of a large number of tailings will inevitably cause a series of problems and hazards. Existing studi...

Claims

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Application Information

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IPC IPC(8): C04B33/13C04B33/138C04B38/02C04B38/06C04B33/32C04B33/36
CPCC04B33/13C04B33/138C04B33/32C04B33/36C04B38/068C04B2235/3248C04B2235/3427C04B2235/5224C04B38/02Y02P40/60
Inventor 胡宏武
Owner 安徽予初网络科技有限公司
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