Biomineralization processes of calcite induced by bacteria .
The ore is loaded into a blast furnace along with measured quantities of coke and limestone. Hot combustion air is supplied to the furnace and some form of fuel used to raise the temperature. The iron is reduced from the ore by carbon in the coke, the limestone aiding slag separation from the molten iron. The slag and molten iron are tapped off from the bottom of the furnace, the slag being .Grinding is a powdering or pulverizing process. The most suitable for calcite powder grinding is ultrafine grinding mill. Our ultrafine grinding mill is the ideal equipment to grind calcite, chalk, line, dolomite, kaolin, gypsum, feldspar to micro powder between 47 ~ 5 microns, which features high efficiency, long lifetime of wearing parts .