403 Forbidden

With the development of heavy industries, more and more foundries and established for melting iron and steel. Spent foundry sands are by products generated by metal casting industry, typically consisting of even particle sized sands with various additives and some metals affiliated with specific casting process. The new raw sands to make casting molds are ...

Replacement of natural sand in concrete It is obvious the available quantity of natural sand is decreasing during the past decades. This seems to be a global trend, except some locations is relatively abundant with natural sand. The reasons of natural sand absence is also similar all over the world, existing natural sand deposits are ...

Manufactured sand there are abundant mineral resources worldwide, of these resources natural sand plays important role in construction industry. When rock is crushed and sized in a quarry the main aim has generally been to produce coarse aggregates and road construction materials meeting certain specifications. generally, this process has left over a proportion of excess ...