Diopside phase glass ceramic and preparation method thereof

A technology of glass-ceramics and diopside, which is applied in the field of building decoration materials preparation, can solve the problems of high cost, high production energy consumption, poor mechanical properties of products, etc., and achieve short production cycle, lower melting temperature, and anti-differentiation performance Improved effect

Inactive Publication Date: 2013-09-11
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a diopside phase glass-ceramic and its preparation method, which can effectively utilize gold mine tailings resources and solve the problems of high production energy consumption, high cost and poor mechanical properties of products in the prior art

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  • Diopside phase glass ceramic and preparation method thereof
  • Diopside phase glass ceramic and preparation method thereof
  • Diopside phase glass ceramic and preparation method thereof

Examples

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Embodiment 1

[0032] The main raw material gold mine tailings used in this embodiment is unscreened gold mine tailings in Hanyin area, Shaanxi Province.

[0033] The preparation method of diopside phase glass ceramics comprises the following steps:

[0034] 1) Take unscreened gold mine tailings and analyze its chemical composition (mass fraction): SiO 2 65.93%; Al 2 o 3 15.25%; CaO2.12%; MgO3.42%; Fe 2 o 3 5.84%;Na 2 O4.06%; K 2 O3.08%; TiO 2 0.83%;

[0035] 2) In terms of mass fraction, take the following raw materials: 64.6% of the unscreened gold mine tailings described in step 1), 25.8% of calcite; 4.0% of borax; 1.6% of ZnO; TiO 21%;Cr 2 o 3 1%;Na 2 SiF 6 1.2%; Sb 2 o 3 0.8%. Fully grind after mixing, and pass through a 60-80 mesh sieve after grinding to obtain a mixture;

[0036] 3) Put the mixed material in an alumina crucible, use a silicon carbide rod electric furnace at 1450 ° C, heat-preserve and melt for 3 hours, so that the glass liquid is fully melted, and ther...

Embodiment 2

[0041] The main raw material gold mine tailings used in this embodiment is consistent with the gold mine tailings used in Example 1.

[0042] The preparation method of diopside phase glass ceramics comprises the following steps:

[0043] 1) In terms of mass fraction, the following raw materials are taken: 65% of unscreened gold mine tailings described in step 1) of Example 1, 25% of calcite; 4.8% of borax; 1.6% of ZnO; 2 o 3 0.8%;Na 2 SiF 6 1.0%; CaF 2 1.0%; Sb 2 o 3 0.8%. Fully grind after mixing, and pass through a 60-80 mesh sieve after grinding to obtain a mixture;

[0044] 2) Put the mixture in an alumina crucible, use a silicon carbide rod electric furnace at 1350°C, heat-preserve and smelt for 4 hours, so that the glass melt is fully melted, and there are no visible bubbles; then cool to 950°C with the furnace, keep warm for 0.5h, and finally Cool to 28°C with the furnace to obtain a glass-ceramic sample.

[0045] Through analysis, each composition (mass fracti...

Embodiment 3

[0048] The main raw material gold mine tailings used in this embodiment is consistent with the gold mine tailings used in Examples 1 and 2.

[0049] The preparation method of diopside phase glass ceramics comprises the following steps:

[0050] 1) In terms of mass fraction, the following raw materials are taken: 60.5% of unscreened gold mine tailings described in step 1) in Example 1, 27.8% of calcite; 4.6% of borax; ZnO2.6%; Cr 2 o 3 1.7%;Na 2 SiF 6 1.74%; Sb 2 o 3 1.06%. Fully grind after mixing, and pass through a 60-80 mesh sieve after grinding to obtain a mixture;

[0051] 2) Put the mixed material in an alumina crucible, use a silicon carbide rod electric furnace at 1200 °C, heat-preserve and melt for 5 hours, so that the glass liquid is fully melted, and there are no visible bubbles; then cool to 920 °C with the furnace, keep warm for 1.5 hours, and finally Cool to 25°C with the furnace to obtain a glass-ceramic sample.

[0052] Through analysis, each compositio...

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Abstract

The invention discloses a diopside phase glass ceramic and a preparation method thereof, belonging to the technical field of building ornament material preparation. A preparation method of the diopside phase glass ceramic comprises the following steps of: taking the following ingredients in percentage by mass: 40-70% of gold mine backfilling, 0-20% of quartz, 18-35% of calcite, 3-8% of borax, 1-3% of ZnO, 0-2% of TiO2, 0.5-3% of Cr2O3, 0-3% of CaF2, 0-3% of Na2SiF6 and 0.5-3% of Sb2O3; mixing and sufficiently grinding, and screening by using a sieve of 60-80 meshes so as to obtain a mixture material; melting the mixture material for 2-5 hours at 1,200-1,500 DEG C, subsequently cooling down to be less than 900-950 DEG C; carrying out heat preservation for 0-2 hours, and subsequently cooling down to be 25-30 DEG C so as to obtain the diopside phase glass ceramic. According to the method, the gold mine backfilling is taken as the main raw material which takes the place of chemical raw materials, so that the waste is changed into wealth, the environmental pollution is reduced, and the production cost of the glass ceramic is lowered. The principal crystalline phase of the glass ceramic prepared by using the method is diopside and a solid solution of the diopside, so that the mechanical strength, the abrasive resistance, the corrosion resistance and the differentiation resistance of a product are improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of building decoration materials, and in particular relates to a diopside phase glass-ceramic and a preparation method thereof. Background technique [0002] Glass-ceramics is a polycrystalline composite solid material containing a large number of microcrystalline phases and evenly distributed glass phases, which is obtained by adding a crystal nucleating agent to the basic glass of a specific composition, and controlling the microcrystallization of the basic glass through a certain heat treatment. The glass-ceramics prepared by using tailings has high hardness, wear resistance, flexural strength, corrosion resistance, weathering resistance, adjustable expansion coefficient and other properties, and can be widely used in architectural decoration, machinery industry, chemical industry, nuclear industry, etc. industry and other fields. [0003] With the development of modern industrial technolo...

Claims

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Application Information

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IPC IPC(8): C03C10/04
Inventor 高淑雅陈维铅刘杰董亚琼
Owner SHAANXI UNIV OF SCI & TECH
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