C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
134/37, 362/55
C02F 1/00 (2006.01) B01J 20/02 (2006.01) C02F 1/28 (2006.01)
Patent
CA 1075559
ABSTRACT OF THE INVENTION The present invention describes a method of producing phosphate-removing filter media and dusting agents. The method involves cac- cining a raw material aggregate containing therein a high percentage of the compounds of calcium, alumina and iron, by the use of a sufficient amount of heat to to cause the calcium, alumina and iron compounds to become concentrated within the calcined aggregate. And then crushing, grinding and screening the calcined materials to a desired sizing.
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