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Foam microcrystalline glass made of high-silicon iron tailings and production method of foam microcrystalline glass

A foamed glass-ceramic and high-silicon iron tailings technology is applied in glass molding, glass manufacturing equipment, manufacturing tools, etc., and can solve the problems of high cost, low thermal conductivity and high compressive strength of foamed glass-ceramic, and achieves The effect of solving the problem of pollution hazards, low production cost and good performance

Active Publication Date: 2015-07-22
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of high cost and complex process of the foamed glass-ceramics produced in the prior art, the present invention provides a foamed glass-ceramic with solid waste high-silicon iron tailings as the main raw material and a simplified process and a production method thereof. The product has the advantages of low density, small thermal conductivity, high compressive strength, easy processing and molding, etc.

Method used

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  • Foam microcrystalline glass made of high-silicon iron tailings and production method of foam microcrystalline glass
  • Foam microcrystalline glass made of high-silicon iron tailings and production method of foam microcrystalline glass

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment one: the method for producing foamed glass-ceramic by utilizing high-silicon tailings, comprises the following steps:

[0038] (1) Raw materials: Weigh 90wt% of high-silicon iron tailings, 1wt% of foaming agent, and 9wt% of additives; Talc is mixed at a mass ratio of 5:0.5;

[0039] (2) Put each raw material in a ball mill, and ball mill until the particle size of the mixture is 200 mesh;

[0040] (3) Spread the mixture into the mold for molding;

[0041] (4) Push the formed mixture into the tunnel kiln, and go through preheating, sintering, foaming, quenching, crystallization, and annealing processes to obtain a foamed glass-ceramic blank. The specific requirements are as follows:

[0042] 1) Preheating: Gradually raise the temperature of the formed mixture from room temperature to 600°C at a heating rate of 2°C / min, and keep it at this temperature for 30 minutes;

[0043] 2) Sintering: Gradually raise the temperature from 600°C to 1000°C at a heating rat...

Embodiment 2

[0049] Embodiment 2 The method for producing foamed glass-ceramics by using high-silicon tailings comprises the following steps:

[0050] (1) Raw materials: Weigh 80wt% of high-silicon iron tailings, 1wt% of foaming agent, and 19wt% of additives; Stone and talc are mixed at a mass ratio of 5:0.5;

[0051] (2) Put each raw material in a ball mill, and ball mill until the particle size of the mixture is 300 mesh;

[0052] (3) Put the mixture into the mold and press it into shape;

[0053](4) The formed mixture is pushed into the tunnel kiln, and after preheating, sintering, foaming, quenching, crystallization, and annealing processes, the foamed glass-ceramic blank is obtained. The specific requirements are as follows:

[0054] 1) Preheating: Gradually raise the temperature of the formed mixture from room temperature to 600°C at a heating rate of 5°C / min, and keep it at this temperature for 30 minutes;

[0055] 2) Sintering: Gradually raise the temperature from 600°C to 1000°...

Embodiment 3

[0061] Embodiment 3 The method for producing foamed glass-ceramics by utilizing high-silicon tailings comprises the following steps:

[0062] (1) Weigh 70wt% of raw material high-silicon iron tailings, 1wt% of foaming agent, and 29wt% of additives; Mixed with a mass ratio of 5:0.5;

[0063] (2) Put each raw material in a ball mill, and ball mill until the particle size of the mixture is 250 mesh;

[0064] (3) Put the mixture into the mold and press it into shape;

[0065] (4) Push the formed mixture into a tunnel kiln, and undergo preheating, sintering, foaming, quenching, crystallization, and annealing processes to obtain rough foamed glass-ceramics. The specific requirements are as follows:

[0066] 1) Preheating: Gradually raise the temperature of the molded mixture from room temperature to 600°C at a heating rate of 5°C / min, and keep it at this temperature for 30 minutes;

[0067] 2) Sintering: Gradually raise the temperature from 600°C to 1000°C at a heating rate of 5°...

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Abstract

The invention relates to foam microcrystalline glass produced by using high-silicon iron tailings and a production method of the foam microcrystalline glass. Main raw materials of the foam microcrystalline glass comprise 70%-90% of the high-silicon iron tailings, 0.5%-5% of a foaming agent and 5%-30% of an additive, wherein the foaming agent is obtained by mixing carbon powder and calcium carbonate in a mass ratio being 2:1; the additive is obtained by mixing albite and talc in the ratio being 5: (0.5-1). During production, the raw materials are uniformly mixed, and the foam microcrystalline glass is prepared through preheating, sintering, foaming, crystallizing and annealing processes after forming. The foam microcrystalline glass has the advantages of small density, small heat conductivity coefficient, high compressive strength, easiness in processing and forming and the like and can be used for buildings such as a villa, a civic building, an industrial factory building and the like. The problems of high raw material production cost, complicated technology and the like of the foam microcrystalline glass are solved, pollution hazard of tailing accumulation to the environment is avoided, waste is turned into wealth, and energy saving and environmental protection are realized.

Description

technical field [0001] The invention belongs to the technical field of building and engineering heat preservation and heat insulation materials, and relates to a foamed glass-ceramic produced by using high-silicon iron tailings and a production method thereof. Background technique [0002] At present, all kinds of tailings have become one of the bulk solid wastes with the largest output and the lowest comprehensive utilization rate in my country. The cumulative stockpiles exceed 10 billion tons, and the annual output exceeds 1 billion tons, of which iron tailings account for all tailings. Nearly 1 / 3 of the ore stockpile. The comprehensive utilization rate of other bulk solid waste in my country, such as coal gangue and fly ash, exceeds 50%, while the comprehensive utilization rate of tailings is less than 20%, and the development and utilization of iron tailings are mainly concentrated in the production of cement products, In terms of road filling and iron element recycling,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/08C03C6/10
Inventor 张雪峰李保卫贾晓林张明星刘芳
Owner INNER MONGOLIA UNIV OF SCI & TECH
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