ABSTRACT
The glass content in granulated blast furnace slags may be determined as
the difference between the total and the content of crystalline phases as determined by quantitative X-ray diffraction. Its amount may vary in different slags, and depends on their oxide composition, the initiation temperature of cooling, and the cooling method employed. Generally, the tendency to crystallize increases with increasing CaO and MgO contents of the slag and decreasing rate of cooling. High-quality slags may contain up to 95% of glass. The composition of the glass phase is usually fairly uniform.
