The invention discloses
ceramic active
powder based on
coal gangue, and the
ceramic active
powder comprises the following chemical components in percentage by weight: greater than or equal to 95 percent of SiO2 + Al2O3, 30-45 percent of Al2O3 and less than or equal to 0.5 percent of Fe2O3. The high-end
glass fiber disclosed by the invention is high in
silicon and aluminum content, low in
mullite content, few in impurities, high in
sintering activity, small in ignition loss, low in COD (
Chemical Oxygen Demand) and good in performance uniformity, can replace
pyrophyllite or imported kaolin, and is applied to preparation of high-end glass fibers. The
coal gangue solid waste is used as the
raw material, the heat treatment temperature is 850-950 DEG C, the heat
treatment time is 5-10 seconds, the
raw material source is wide, the
energy consumption is low, and the production cost is low. The
glass fiber prepared by the method is high and stable in quality, the cost of preparing the
glass fiber is low, large-scale industrial production of high-end glass
fiber can be realized, and high-value
resource utilization of high-
alumina coal gangue solid waste is realized.