马丁砂-Back-fills for Tapping hole

根据出钢条件，按不同比例选用优质镁砂，镁橄榄石，石英质材料，配以复合添加剂混合而成。填料具有施工简单方便，烧结性适宜，防止钢水渗透性强，不漂浮，自开率高，使用安全性高等特点。

Taking different high quality magnesite, forsterite, silica as raw materials according the tapping conditions, adding with complex additives.This backfill is characterized with easy installation, suitable sintering, floating resistance, high self-opening rate, good performance and safety.