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
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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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