densified silica fume

Silica fume, also known as microsilica, is a byproduct of the reduction of high-purity quartz with coke in electric arc furnaces in the production of silicon and ferrosilicon alloys (ASTM C1240[1], EN 13263[2]. Before the mid-1970s, nearly all silica fume was discharged into the atmosphere. After environmental concerns necessitated the collection and landfilling of silica fume, it became economically justified to use silica fume in various applications, in particular high performance concrete,call me skype.xiamenpaul,pls contact with me........

Post Date:	5/4/2008
Expiry Date:	4/29/2009