Mineral Processing & Metallurgy

A. Metallurgical technology for rare metals and rare earths
Significant contributions have been made to the exploitation of many Chinese important mineral resources in Baotou, Panzhihua, Jinchuan, Baiyin, Yunxi and Dachang, the technologies developed include:
    Enriched oxygen smelting
    Combination of reduction-distillation techniques in sponge Ti production
    Solvent extraction,e.g. Zr-Hf, Ni-Co separations
    Precious metals metallurgy
    Superconducting magnetic separation of ore dressing
    Plasma metallurgy
    Chemicals for mineral processing and metallurgy
Ÿ   Metals molten salt electrolytic refining
Ÿ   High efficient pollution-free separation and purification of rare earths
Ÿ   Comprehensive utilization of rare earth associate resources
Ÿ   Recycling of waste water during rare earth separation and smelting;
Ÿ   Rare earth metallurgical process control
Ÿ   Equipment development for rare earth separation and smelting
 
 
B. Biohydrometallurgy
GRINM developed biohydrometallurgy to treatlow-grade copper sulfide ore, nickel and cobalt sulfide ore. The technologies were applied in Zinjinshan copper minewith an annual production of 10,000t copper cathode, in Yulong copper mine in Tibet with 4500m above sealevel, and extended to be applied in Dexing, Yulong, Huidong and Tuwu with significant economic, social and environmental benefits.
 
GRINM headed to form the China technology innovation alliance for biohydrometallurgy industry, co-founded a couple of joint labs and industrial application bases with many leading corporations, which has played an important role in high efficient development of nonferrous metal resources, energy saving and emission reduction.
 
C. Advanced Mineral Processing Technology
GRINM is devoted to the development of advanced technologies for mineral processing, and is at leading level to provide solution to
Ÿ   Potential controlled floatation for sulfide ores,complex polymetallicsulfide ore and oxide ores;
Ÿ   High efficient floatation reagents
Ÿ   Floatation equipment
Ÿ   Component analysis, property study, processibilityevaluationand identification of valuable elements recovery from ores, tailings, slags.
Ÿ   Potential control floatation technology for complex polymetallic ores, tailings and waste ores
 
D. Techniques for comprehensive resources utilization
Under the threat of domestic resources shortage, GRINM is devoted to study on recovery of smelting dust, slags, electronic scraps andurban waste, new techniques and pilot experimental competence are developed. The recovery equipment, engineering technology, and R&D results reach the international advanced level.
 
E. High Purity Materials Fabrication and Characterization Technology
With more than 50 years’ experience in mineral processing, smelting, purifying, refining and re-purifying and products characterization in the field of nonferrous metals, GRINM has strength both in high purity nonferrous metals, inorganic reagents fabricating technology and in materials characterization, including
Ÿ   High efficient purification of Au, Ag,Pt, Rh, Ir, Pd;
Ÿ   Electron beam smelting and vacuum smelting purification technology for refractory metals: W, Mo, Ta, Nb;
Ÿ   Electron beam smelting technology for high purity W, Fe, Ti, Ni and Cu;
Ÿ   Fabrication technology for high purity Zr, Hf, Ti, Fe, Co and Ni oxides and metals;
Ÿ   Ultra high purity rare earth metals;
Ÿ   Key common technologies for high purity materials
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