GB/T 21236-2007 in English

《GB/T 21236-2007电炉回收二氧化硅微粉》由TC183（全国钢标准化技术委员会）归口，TC183SC18（全国钢标准化技术委员会冶金固废资源分会）执行，主管部门为中国钢铁工业协会。
本标准规定了二氧化硅微粉产品的牌号、技术要求、试验方法、检验规则和标志、包装、运输、贮存及质量证明书等。 本标准适用于硅铁和工业硅等生产中，通过电炉的烟罩收集的含硅气体氧化凝聚后，经干法收尘装置收集的二氧化硅微粉。

Scope

This standard stipulates the brand name, technical requirements, test methods, inspection rules, packaging, marking, storage, transportation and quality certificate of silica powder products. This standard applies to the production of ferrosilicon and industrial silicon. After the silicon-containing gas collected by the fume hood of the electric furnace is oxidized and condensed, the silicon dioxide micropowder collected by the dry dust collection device is called " Electric furnace recovery of silica powder", referred to as "silicon dioxide powder" (commonly known as "silica fume").