Farashin Kaolin Clay na China Yumbu Mai Girman Kaolin Clay Metakaolin
Kaolin cakuda ne na ƙarfe mara ƙarfe mara ƙarfe, kaolin mai ƙamshi an yi shi da kaolin a cikin tanda mai narkewa zuwa wani zafin jiki da lokaci, halayen jiki da sinadarai waɗanda ke da wani canji, don biyan wasu buƙatu.
Idan aka kwatanta da kaolin da ba a yi calcine ba, kaolin da aka yi calcine tare da ƙarancin ruwa, silica da alumina sun ƙaru sau uku, aikin yana ƙaruwa, canje-canje a cikin tsarin, girman barbashi ƙanana ne kuma iri ɗaya, idan aka kwatanta da robar NR da ba a yi calcine ba, lanƙwasa mai ƙarancin zafin jiki na mahaɗin NR da aka yi calcine da kaolin. Shore Taurin da ya dace, ƙarfin juriya mafi girma, halayen jiki na tafin ƙafa mara haske ga ƙa'idodin masana'antar takalman wasanni.