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Introduction of Brown Corundum Production Process


A brown corundum production method, which is prepared by using aluminum ash waste through water washing, drying, arc smelting, waste separation, crushing, air separation, magnetic separation and screening. This method opens up a new source of raw materials for the abrasive industry and turns waste into treasure, eliminating pollution. The brown corundum produced by this method has high purity and saves electricity.
Gloss and transparency: transparent-opaque, polished surface has bright glass luster or sub-diamond luster.
Polychromaticity: Both have dichroism, and generally show different shades of color. Ruby and blue sapphire have stronger dichroism, and other colors of sapphire are slightly weaker.
Luminescence: Red fluorescence can be found in rubies under long and short wave ultraviolet, and the intensity under long wave is higher than that under short wave. Sunlight can also excite its red fluorescence, but those with high Fe have weaker fluorescence. Sapphire is generally non-fluorescent, but Cr-containing Sri Lankan and Montana sapphires sometimes show pink fluorescence. And some yellow sapphires from Sri Lanka can have apricot or orange yellow fluorescence.
Brown corundum is an aluminum-silicon series heavy-duty refractory product and its preparation process, which is characterized by: using a very small amount of aluminate steel to ensure stripping strength and as a sintering aid; using silica fume and alumina fine powder to reduce the molding water demand and mobilizing materials Density and intensity, and deep improvement of sinterability; use alumina powder, mullite powder, orange andalusite or brown corundum to mobilize fire resistance;
Brown corundum uses the reduction and compensation theorem, and the special tacit understanding of silica fume, alumina fine powder, mullite powder, orange andalusite or brown corundum enables the brick making material to have a very low change rate of firing line and reheating line. Clay refractory aggregate enhances the stability of brick structures at high temperatures. Because the material's sinterability, volume change during firing, fire resistance and structural stability at high temperature have been significantly improved, the production cost and manufacturing difficulty of the material have been greatly reduced, and the function has been significantly mobilized, so that conventional casting can be used , Curing and firing process produce heavy refractory products with high quality refractory performance.

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