Aja akụkụ corundum ọcha

Ọ na-ezo aka na ngwaahịa corundum na-acha ọcha na nha nha nke sitere na 0-1mm, 1-3mm, 3-5mm, 5-8mm, 100 # - 0, 200 # - 0, na 320 # - 0. Nnukwu corundum ọcha dị elu. A na-ebuga ụlọ ọrụ ebe a na-esi agbaze na ngalaba nke mmepụta ájá, nke onye na-achịkọta ihe na-egweri na-egwepịa ya, wee nyochaa ya iji nweta ngwaahịa corundum na-acha ọcha nke nwere oke nha n'ime ebe ụfọdụ.A na-eji ya eme ihe dị ka ngwa ntugharị akpụ akpụ, amorphous refractory na ngwa ájá ala.