Of chrome ore common chrome spinel iron ore minerals chromium [(Mg, Fe) Cr 2 O 4], aluminum chromite [(Mg, Fe) (Cr , Al) 2 O 4] and the chromium-rich tip spar [Fe (Cr, Al) 2 O 4] and the like; gangue minerals olivine, serpentine and pyroxene; sometimes associated small amounts of vanadium, nickel, cobalt and platinum group elements. In the identification of rock and minerals, the chemical composition of chrome spinel should be highlighted because it determines the concentrate grade and the ratio of ferrochrome.
The beneficiation of chromite ore is mainly by re-election method. Shakers and jigs are often used in production. Sometimes re-election concentrates are re-selected with weak magnetic or strong magnetic separation to further increase the grade and ferrochrome ratio of chromium concentrate.
The chrome spinel contains ore which is relatively high in iron or densely symbiotic with magnetite. In the concentrate obtained after ore dressing, the chrome grade and the ferrochrome ratio are both low, which can be considered as an ingredient for the production of ferrochrome by fire, or hydrometallurgical processing. For example, sodium dichromate method, chromium hydroxide method, reduction rust method, chlorination roasting acid leaching or electrolysis method. The production practice of low-grade ferrochrome concentrate by hydrometallurgy.
Chromite ore in associated form, such as PGE sulfide, arsenic compound or sulfur arsenide state, can be recovered by flotation. Olivine and serpentine ore, can be considered comprehensive recovery, for the production of refractory materials, calcium magnesium phosphate fertilizer diabase or the like.
Gold Electrowinning Equipment
JHP series gold-loaded carbon medium temperature non-cyanide desorption and same temperature electrolysis equipment was developed by Changchun Gold Research Institute Co., Ltd. in 1998 and entered the market. It has been used in more than 800 enterprises at home and abroad. This series of equipment is oriented to the gold-loaded carbon in the gold cyanide carbon slurry process for gold desorption and electrolysis, and the gold adsorbed on the gold-loaded carbon is produced in the form of high-grade gold mud. After decades of practical application and continuous optimization and improvement in enterprises, this series of equipment has developed to the fifth generation.
Gold Electrowinning Equipment,Mining Equipment,Gold Process Equipment,Gold Processing Equipment
Changchun Gold Research Institute Co.LTD , https://www.changchunmachine.com