Low-expansion glass-ceramics with lithia ore tailings as principal raw material and manufacturing method thereof

A main raw material, glass-ceramic technology, applied in the field of glass-ceramic manufacturing, can solve the problems of low waste consumption and high cost of raw materials

Active Publication Date: 2009-05-27
中国地质科学院尾矿利用技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a low-expansion glass-ceramic with spodumene tailings as the main raw material and a manufacturing method thereof, and solves the technical problems of low waste consumption and high cost of raw materials in the existing glass-ceramic manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] The glass batch is made by weighing and mixing, and its composition is by weight percentage: spodumene tailings 80, aluminum oxide 9.7, lithium carbonate 9.6, zinc oxide 1.0, barium carbonate 2.0, boric acid 0.8, titanium oxide 2.0, zirconium oxide 2.0 , antimony oxide 1.0.

[0098] Wherein the composition of spodumene tailings is by weight percentage: SiO 2 82.5, Al 2 o 3 12.8 Li 2 O 0.2, Na 2 O0.57, K 2 O 0.8, CaO 0.78, MgO 0.6, Fe 2 o 3 0.1, ZnO 0.06, BaO 0.33, rare metal oxides (PbO+SnO+BeO+Nb 2 o 3 +Ta 2 o 3 )0.5.

[0099] The corresponding oxide composition of this glass batch is by weight percentage: SiO 2 66. Al 2 o 3 19.94, Li 2 O4.03, Na 2 O 0.4, K 2 O 0.6, CaO 0.62, MgO 0.5, ZnO 1.05, BaO 1.75, B 2 o 3 0.45, TiO 2 2.0, ZrO 2 2.0, Sb 2 o 3 1.0. Rare metal oxides (PbO+SnO+BeO+Nb 2 o 3 +Ta 2 o 3 )0.4.

[0100] Melt the above glass at a temperature of 1600°C for 4 hours; pour the molten glass into a disc with a diameter of 1...

Embodiment 2

[0102] The glass batch is made by weighing and mixing, and its composition is by weight percentage: spodumene tailings 70, aluminum oxide 13, lithium carbonate 9.6, zinc oxide 1.0, barium carbonate 2.0, boric acid 0.8, titanium oxide 4.0, antimony oxide 1.0 . Wherein the composition of the spodumene tailings is the same as in Example 1.

[0103] The corresponding oxide composition of this glass batch is by weight percentage: SiO 2 63.75, Al 2 o 3 21.96, Li 2O4.01, Na 2 O 0.4, K 2 O 0.56, CaO 0.55, MgO 0.42, ZnO 1.04, BaO 1.75, B 2 o 3 0.45, TiO 2 4.0, Sb 2 o 3 1.0. Rare metal oxides (PbO+SnO+BeO+Nb 2 o 3 +Ta 2 o 3 ): 0.35.

[0104] Melt the above glass at a temperature of 1580°C for 4 hours; pour the molten glass into a disc with a diameter of 100mm and a thickness of 5mm, and immediately send it to a furnace for annealing at a temperature of 670°C for 1 hour ;After the annealing is completed, the temperature is raised directly for nucleation and crystalli...

Embodiment 3

[0106] The glass batch is made by weighing and mixing, and its composition is as follows: spodumene tailings 80, alumina 11, lithium carbonate 9.6, zinc oxide 1.0, barium carbonate 2.0, boric acid 0.8, titanium oxide 2.0, zirconium oxide 2.0 , antimony oxide 1.0.

[0107] Wherein the composition of spodumene tailings is by weight percentage: SiO 2 78.5, Al 2 o 3 10.8 Li 2 O 0.2, Na 2 O1.50,K 2 O 1.2, CaO 1.8, MgO 2.6, Fe 2 o 3 0.2, ZnO 0.12, BaO 0.25, (PbO+SnO+BeO+Nb 2 o 3 +Ta 2 o 3 )0.5.

[0108] The corresponding oxide composition of this glass batch is by weight percentage: SiO 2 62.8, Al 2 o 3 19.64, Li 2 O4.03, Na 2 O 1.2, K 2 O 0.96, CaO 1.44, MgO2.08, ZnO1.05, BaO1.75, B 2 o 3 0.45, TiO 2 2.0, ZrO 2 2.0, Sb 2 o 3 1.0. Rare metal oxides (PbO+SnO+BeO+Nb 2 o 3 +Ta 2 o 3 ) is 0.4.

[0109] Melt the above glass at a temperature of 1560°C for 4 hours; pour the molten glass into a disc with a diameter of 100mm and a thickness of 5mm, and ...

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Abstract

The invention relates to low-expansion microcrystalline glass which takes spodumene tailings as a main raw material and a manufacturing method thereof. The raw materials of the low-expansion microcrystalline glass comprise alumina and lithium carbonate. The low-expansion microcrystalline glass is characterized in that the mixing proportion of the compositions by weight percentage is as follows: the content of the spodumene tailings which are taken as the main raw materials is between 70 and 80, the content of the alumina is between 9 and 14, and the content of the lithium carbonate is between 5 and 10; the sum of the addition of four compositions of zinc oxide, barium carbonate, a boric acid and magnesia is between 2 and 5; the sum of the addition of titanium oxide and zirconia is between 3 and 5; and quartz sand can replace partial spodumene tailings. The invention solves the problem of manufacturing the low-expansion microcrystalline glass by utilization of a large quantity of waste spodumene tailings, and the low-expansion microcrystalline glass has the characteristics of reducing environmental pollution, improving the product performance and reducing the production cost.

Description

technical field [0001] The present invention relates to a glass-ceramic and a method for manufacturing the glass-ceramic. Background technique [0002] It has been more than half a century since Corning Glass Company of the United States invented glass-ceramics, and many scholars at home and abroad have carried out a lot of long-term research work in this area. Glass-ceramic is a kind of polycrystalline material obtained by controlling the crystallization of glass, with various varieties and different properties. Low-expansion glass-ceramic mainly refers to Li 2 O-Al 2 o 3 -SiO 2 System glass-ceramic. 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 In the field of exchangers, quartz glass, high temperatur...

Claims

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Application Information

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IPC IPC(8): C03C10/10C03C10/12C03B32/02
CPCC03C10/0027C03C1/002
Inventor 张金青孙小卫邱长青张民福张辉旭
Owner 中国地质科学院尾矿利用技术中心
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