Abstract
The fact has been known that lime is one of the most important materials as flux in steelmaking. The last decade, the average supply of lime for flux is up to 5.5 million tons/year. Fluorspar is convenient material for making flux as dropping of melting point of slag, a number of steel making plants didn't pay attention to the standards of lime but for chemical compound and reactivity. But nowadays, because the solution of fluorine in soil is becoming serious, and the use of fluorspar has been restricted as flux. So, the characteristic of lime, such as surface area and microstructure are drawing the attention for making slag.In this paper, it is reviewed that improving of characteristics of quick lime by various calcination methods.
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