2.1. Starting Materials. Kaolin was supplied from general company for ceramic amp porcelain products Sheeni, Egypt. Metakaolin MK was prepared by calcination of kaolin at 850 o C for 3 hours in a furnace with heating rate of 5 o Cmin then milled in planetary ball mill for 30 min to produce MK powder having Blaine specific surface area of 2,120 m 2 kg and specific gravity of 2500 kgm 3.Free consultation 40 years of industry experience providing one-stop solution
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