Цахилгаан статик аргаар ялгах замаар төмрийн хүдэр ...
Iron is the second most common element on earth and comprises nearly 5% of the earth''s crust. Iron ores are rocks and minerals that contain metallic iron that''s extracted by mining. Almost of mined iron ore is used in steel production, making it essential for everything from staples to buildings.. Beneficiation is the term for reducing the size of valuable iron ore particles and ...