标准号:IS 4574-1989
发布日期:1989/8/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard covers the requirements for three grades fluorsapar for use in metallurgical industries (see Table 1).Grade 1 fluorspar is used in aluminium industry only while Grades 2 and 3 are for use in steel industries.