White Clay Tungsten Carbide Ball Mill
The Lexicon Explains Specific Terms. Ammoniumparawolframat Ammonium paratungstate is a white crystalline tungsten salt Its chemical formula is NH 4 10 H 2 W 12 O 42 4H 2 O APT is an intermediate from the processing of ores containing tungsten for the generation of tungsten or tungsten compounds and contains about 85 WO 3 APT is the worldwide trading format for raw materials containing tungsten.