Glass ceramics made from high silicon iron tailings and manufacturing method thereof

A technology of high-silicon iron tailings and glass-ceramics, applied in the direction of solid waste removal, etc., can solve the problems of high raw material cost, increased fuel consumption, high melting temperature of glass, etc., achieve good social and economic benefits, and improve melting Speed, the effect of lowering the melting temperature

Inactive Publication Date: 2011-02-09
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this kind of glass batch material are: high cost of raw materials; high melting temperature of glass, generally between 1500-1550 °C, which will inevitably increase fuel consumption and intensify the erosion of glass liquid on refractory materials of kiln; The more chemical raw materials there are, the more severe the corrosion of the refractory material of the furnace will be.
And the discarded high-silicon iron tailings have been accumulated in tailings ponds or river ditches, and the fields have not been used for a long time. It takes up a lot of land and pollutes the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The glass batch is made by weighing and mixing, and its composition by weight is: 70 parts of iron tailings, 15 parts of quartz, 6 parts of limestone, 3.5 parts of alumina, 9.5 parts of soda ash, 4 parts of zinc oxide, carbonic acid Barium 3 parts.

[0026] Put the above-mentioned glass batch material in a mullite crucible and melt it in a box-type electric furnace at a temperature of 1450°C for 4 hours. After the melting is completed, the glass liquid flows directly into the water to become glass pellets. Spread 700 grams of glass granules in a refractory mold with a size of 120×120 mm, and conduct crystallization in a box-type electric furnace. The crystallization temperature is 1070° C., and the crystallization time is 30 hours. Thereby, a black glass-ceramic sample of 120×120×18 mm was obtained.

Embodiment 2

[0028] The glass batch is made by weighing and mixing, and its composition by weight is: 40 parts of iron tailings, 32 parts of quartz, 17.7 parts of limestone, 6.5 parts of alumina, 8.5 parts of soda ash, 5 parts of zinc oxide, carbonic acid 6 parts of barium, 3 parts of borax, 0.3 parts of copper oxide, 0.15 parts of carbon powder.

[0029] The above-mentioned glass batch materials are melted in a glass tank kiln at a temperature of 1450° C. for 4 hours. After the melting is completed, the glass liquid flows directly into the water to become glass pellets. Spread 26 kg of glass pellets in a refractory mold with a size of 6000×9000mm, and carry out crystallization in a shuttle kiln fueled by liquefied petroleum gas. The crystallization temperature is 1050°C and the crystallization time is 30 hours. Thus, a red glass-ceramic sample of 600×900×18 mm can be obtained.

Embodiment 3

[0031] The glass batch is made by weighing and mixing, and its composition by weight is: 30 parts of iron tailings, 40 parts of quartz, 19.2 parts of calcium carbonate, 6 parts of alumina, 8.5 parts of soda ash, 5 parts of zinc oxide, 6 parts of barium carbonate, 2 parts of borax, 0.2 part of chromium trioxide.

[0032] Put the above-mentioned glass batch material in a mullite crucible and melt it in a box-type electric furnace at a temperature of 1500°C for 4 hours. After the melting is completed, the glass liquid flows directly into the water to become glass pellets. Spread 700 grams of glass granules in a refractory mold with a size of 120×120 mm, and conduct crystallization in a box-type electric furnace. The crystallization temperature is 1070° C., and the crystallization time is 30 hours. A green glass-ceramic sample of 120×120×18 mm can thus be obtained.

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PUM

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Abstract

The invention relates to the technical field of solid waste resource utilization, in particular to glass ceramics made from high silicon iron tailings, which is characterized by comprising the raw materials in parts by weight: 30-70 parts of the iron tailings, 15-40 parts of quartz, 5-20 parts of calcium carbonate, 3.5-6.5 parts of aluminum oxide, 8.5-9.5 parts of sodium carbonate, 4-5 parts of zinc oxide, 3-6 parts of barium carbonate and 1-3 parts of borax. The manufacturing method of the glass ceramics comprises the following steps: putting the glass ceramics blended materials in a kiln for melting into molten glass; allowing the molten glass to directly flow into water for water quenching to form glass particles; and paving the glass particles in a refractory die, crystallizing the paved particles in a tunnel kiln, a shuttle kiln or a chamber electric furnace, and grinding and cutting the crystallized glass ceramics to finally obtain the finished product of the glass ceramics. The invention can reduce stockpile of the tailings, alleviate environmental pollution, realize comprehensive resource utilization, improve product performances and lower production cost, thus having good social benefit and good economic benefit.

Description

technical field [0001] The invention belongs to the field of utilization of solid waste resources, in particular to a glass-ceramic manufactured from high-silicon iron tailings and a manufacturing method thereof. Background technique [0002] Glass-ceramic is a polycrystalline material obtained by controlling the crystallization of glass. At present, glass-ceramics has formed a special category of materials, with various varieties and different properties, and has a very wide range of uses. Glass-ceramic plate is one of many varieties of glass-ceramics. It is a new type of high-grade building decoration material with high strength, wear resistance, corrosion resistance, weathering resistance, non-absorbent, easy cleaning and maintenance, and no radioactive pollution. Features and uniform color tone, soft and crystal-clear luster, compact and flawless surface and other excellent appearance characteristics, so the performance of glass-ceramic plates is superior to natural sto...

Claims

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Application Information

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IPC IPC(8): C03C10/00B09B3/00
Inventor 刘雁翎
Owner ANSTEEL GRP MINING CO LTD
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