anyang Cheap ferro manganese slag , silicon slag , ferro silicon slag

Slag material is a by-product from production of silicon metal of ≥99% purity.  To ensure the quality of the silicon metal, top portion of the melt is separated when draining from the electric-arc furnace.  The less pure portion of silicon metal typically contains higher contents of iron, aluminum, calcium and other slag.  With the employment of density  separation machines, different grades of silicon slag are segregated efficiently.

According to above,

1. Silicon slag(off grade silicon) is a by-product when making silicon metal.

2. The silicon content is from 45% to95%, and the rest are C, S, P, Al, SiO2, Fe, Ca etc.

3. The silicon slag is much cheaper than purity silicon metal, and has many industrial applications.