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Method for producing low-expansion glass-ceramics from high-silicon iron tailings

A technology of high-silicon ferrosilicon tailings and glass-ceramics, which is applied in the field of manufacturing low-expansion glass-ceramics, can solve the problems of ineffective utilization of high-silicon ferrosilicon tailings from mine wastes, etc., to achieve outstanding substantive characteristics, reduce thermal expansion coefficient, The effect of improving mechanical strength

Inactive Publication Date: 2017-10-20
BEIJING QING MAI HUA QING HLDG GRP CO LTD
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Problems solved by technology

[0003] Existing glass-ceramics are usually manufactured using a variety of chemicals, but cannot effectively utilize mine waste high-silicon iron tailings

Method used

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Embodiment 1

[0022] The method for producing low-expansion glass-ceramics with high-silicon iron tailings of the present invention comprises the following steps:

[0023] A. Prepare low-expansion glass-ceramic batch materials, which include 40-45 parts by weight of 80-mesh high-silicon iron tailings, 50-55 parts by weight of 100-mesh quartz sand, and 10-15 parts by weight of 100-mesh alumina 10-15 parts by weight of lithium carbonate, 3-6 parts by weight of zinc oxide, 3-6 parts by weight of barium selenate, 2-5 parts by weight of rare earth cerium oxide powder, 1-4 parts by weight of lithium zirconate, boron nitride 2-5 parts by weight, 3-6 parts by weight of praseodymium chloride, 0.2-0.5 parts by weight of beryllium oxide, 0.5-0.9 parts by weight of bismuth subcarbonate, 0.1-0.4 parts by weight of sodium antimonate;

[0024] The weight percentage components of the high-silicon iron tailings are: silicon dioxide 69.08%-75.56%, aluminum oxide 1.93%-2.75%, ferric oxide 12.38%-18.46%, calci...

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Abstract

A method for manufacturing low-expansion glass-ceramics by high silicon-iron tailings comprises the step of perparing a low-expansion glass-ceramics batch which comprises the following materials in parts by weight: 40-45 parts of 80-mesh high-silicon iron tailings, 50-55 parts of 100-mesh quartz sand, 10-15 parts of 100-mesh alumina, 10-15 parts of lithium carbonate, 3-6 parts of zinc oxide, 3-6 parts of barium selenate, 2-5 parts of rare-earth cerium oxide powder, 1-4 parts of lithium zirconate, 2-5 parts of boron nitride, 3-6 parts of praseodymium chloride, 0.2-0.5 part of beryllia, 0.5-0.9 part of bismuth subcarbonate and 0.1-0.4 part of sodium antimonate. The invention aims to provide the method for manufacturing low-expansion glass-ceramics by high silicon-iron tailings, the method can reduce environmental pollution and lower manufacturing cost, and the obtained glass-ceramics is low in thermal expansion coefficient, high in thermal stability and softening temperature and very good in thermal shock resistance.

Description

technical field [0001] The invention relates to a method for manufacturing low-expansion glass-ceramics from high-silicon iron tailings. Background technique [0002] Glass-ceramic is a polycrystalline material obtained by controlling the crystallization of glass. Low-expansion glass-ceramics mainly refers to Li2O-Al2O3-SiO2 system glass-ceramics. Because it has excellent properties in four aspects: temperature shock resistance, high frequency insulation, high mechanical strength, and high chemical stability, it can be widely used in astronomical telescopes, high-temperature electric light source glass, laboratory heating appliances, high-temperature thermal Exchangers, substitute quartz glass, high-temperature windows, cooking utensils, tableware and other fields have now become an important branch of glass-ceramic and even material science. [0003] Existing glass-ceramics are usually manufactured using various chemicals, but cannot effectively utilize high-silicon ferro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00C03C6/10
CPCC03C10/0063
Inventor 黄西江
Owner BEIJING QING MAI HUA QING HLDG GRP CO LTD
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