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Anorthite-mullite complex-phase high-temperature resistant material and preparation method thereof

A technology of mullite and high temperature resistance, applied in the field of refractory materials, can solve the problems of high production cost, high thermal conductivity of single-phase mullite, low melting point of single-phase anorthite, etc., and achieve low cost and excellent comprehensive performance Effect

Inactive Publication Date: 2012-07-25
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a kind of limestone, quartz powder and bauxite as the problem that current single-phase anorthite has low melting point, single-phase mullite thermal conductivity is high, and its production cost is relatively high by adopting two-step method sintering. Low-cost, high-performance anorthite-mullite composite phase high-temperature-resistant materials prepared by one-time sintering of raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] raw material:

[0021] Limestone, whose chemical composition is (w): CaCO 3 88.2332%, MgCO 3 8.2827%, SiO 2 1.7295%, Fe 2 o 3 0.6325%, Al 2 o 3 0.5913%, K 2 O 0.2196%, SrO 0.1148%, TiO 2 0.1053%, Cr 2 o 3 0.0913%, the added amount accounts for 6.20% of the total batching mass fraction; quartz powder, the added amount accounts for 30.02% of the total batching mass fraction; Shandong Zibo bauxite, the added amount accounts for 63.78% of the total batching mass fraction.

[0022] Raw material pretreatment:

[0023] The above-mentioned raw materials are finely ground through a 200-mesh sieve by vibrating mill, so that the particle size of the raw materials before use is relatively fine.

[0024] Ingredients and ball milling:

[0025] The above-mentioned various treated raw materials are mixed according to the ratio mentioned above, and then mixed by wet ball milling for 6 hours.

[0026] Forming and drying:

[0027] Add polyvinyl alcohol with a concentrati...

Embodiment 2

[0032] raw material:

[0033] Limestone, whose chemical composition is (w): CaCO 3 88.2332%, MgCO 3 8.2827%, SiO 2 1.7295%, Fe 2 o 3 0.6325%, Al 2 o 3 0.5913%, K 2 O 0.2196%, SrO 0.1148%, TiO 2 0.1053%, Cr 2 o 3 0.0913%, the added amount accounts for 6.20% of the total batching mass fraction; quartz powder, the added amount accounts for 30.02% of the total batching mass fraction; Shandong Zibo bauxite, the added amount accounts for 63.78% of the total batching mass fraction.

[0034] Raw material pretreatment:

[0035] The above-mentioned raw materials are finely ground through a 200-mesh sieve by vibrating mill, so that the particle size of the raw materials before use is relatively fine.

[0036] Ingredients and ball milling:

[0037] The above-mentioned various treated raw materials are mixed according to the ratio mentioned above, and then mixed by wet ball milling for 6 hours.

[0038] Forming and drying:

[0039] Add polyvinyl alcohol with a concentra...

Embodiment 3

[0044] raw material:

[0045] Limestone, whose chemical composition is (w): CaCO 3 88.23%, MgCO 3 8.28%, SiO 2 1.73%, Fe 2 o 3 0.63%, Al 2 o 3 0.59%, K 2 O 0.22%, SrO 0.11%, TiO 2 0.10%, Cr 2 o 3 0.09%, the added amount accounts for 6.20% of the total batching mass fraction; quartz powder, the added amount accounts for 30.02% of the total batching mass fraction; Shandong Zibo bauxite, the added amount accounts for 63.78% of the total batching mass fraction.

[0046] Raw material pretreatment:

[0047] The above-mentioned raw materials are finely ground through a 200-mesh sieve by vibrating mill, so that the particle size of the raw materials before use is relatively fine.

[0048] Ingredients and ball milling:

[0049] The above-mentioned various treated raw materials are mixed according to the ratio mentioned above, and then mixed by wet ball milling for 6 hours.

[0050] Forming and drying:

[0051] Add polyvinyl alcohol with a concentration of about 30%...

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Abstract

The invention relates to an anorthite-mullite complex-phase high-temperature resistant material and a preparation method thereof, belonging to the technical field of refractory materials. The complex-phase high-temperature resistant material takes limestone, quartz powder and gamma-alumina as main raw materials; the limestone which accounts for 1.0-31wt% of total ingredients, the quartz powder which accounts for 28.2-37.5wt% of total ingredients and the gamma-alumina which accounts for 31.5-72wt% of total ingredients are burdened; after wet milling and mixing, the bonding agent is added for dry pressing and shaping; the mixture is sintered at the temperature of 1400-1600DEG C to obtain the anorthite-mullite complex-phase high-temperature resistant material. The anorthite-mullite complex-phase high-temperature resistant material prepared with the preparation method has excellent high temperature resistance, thermal shock resistance and low thermal conduction performance, the cost of the complex-phase high-temperature resistant material containing the anorthite and the mullite can be effectively lowered, and meanwhile, a new technological approach can be opened for comprehensively and efficiently utilizing the anorthite and the mullite.

Description

Technical field: [0001] The invention relates to a method for preparing an anorthite-mullite composite high-temperature-resistant material by using limestone, quartz powder and gamma-alumina, and belongs to the technical field of refractory materials. Background technique: [0002] Limestone is the commercial name of limestone as a mineral raw material, the main chemical composition is CaCO 3 , there is also a small amount of SiO 2 (0.07-2%), Al 2 o 3 (0.02-1%), Fe 2 o 3 (0.03-1%), MgO (0.08-1%), etc. Limestone has been widely used in the history of human civilization because of its wide distribution in nature and easy access. As an important building material, it has a long mining history. In modern industry, limestone is the main raw material for making cement, lime, and calcium carbide. It is an indispensable flux limestone in the metallurgical industry. High-quality limestone is widely used after ultra-fine grinding. Used in the manufacture of paper, rubber, paint...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 徐慧铭黄军同黄朝晖刘艳改房明浩王永红易帅
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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