extraction of zinc from its ore containing galena
River Gold Mining Equipment / Gold Trommel Washing Plant / Gold . Gravity separation is a process which based on the minerals' different density or . mercury ore, titanium ore, lead ore, tantalum niobium ore, galena,Lapis lazuli, barite, . to be ground is loaded into the Neoprene barrel that contains grinding media. . 2.metal mines such as iron, tin, tungsten, tantalum niobium, gold ore,.