Black tungsten is the main ore that is refined tungsten, also known as tungsten manganese iron ore. Because of the different proportions of ferrotungstate and manganese tungstate, if the iron content is higher, some of them are called tungstenite, and some of them are called tungsten manganese. The black tungsten deposit is brown to black and has metallic or semi-metallic luster. It is commonly found in granite and quartzite. The south of China's jiangxi province, the eastern part of hunan province and the north of guangdong province are the world's most famous areas of the black tungsten mine. The black tungsten deposit is produced in high temperature hydrothermal quartz vein. China's southern jiangxi, eastern hunan, and northern guangdong province are the world famous black tungsten mines. Other major areas include Siberia, myanmar, Thailand, Australia and Bolivia. it is the most important mineral material for tungsten refining.

The black tungsten carbideand tungsten manganese ore are mainly produced in the quartz vein of high temperature hydrothermal quartz and its yunying lithosphere. Veins often exist in the granite intrusion at the top or near contact zone of surrounding rock, mineral association of cassiterite, molybdenite, bismuthinite, pyrite, chalcopyrite, arsenopyrite, topaz, beryl, tourmaline, etc. Tungsten and manganese minerals can also be found in medium and low temperature hydrothermal veins.

Brittle wolframite and easy smash, produced in the process of development and utilization of a large number of black tungsten fine mud, according to a 2010 survey data, at present our country's tungsten ore concentrator fine clay content is between 3% and 17% of total capacity, metal content accounts for about 5% of the total amount of metal - 5% every year in China alone, nearly 245000 tons of tungsten content of fine clay, tungsten fine clay mineral average job recovery is only about 40%.

Before the application of new technology, the fine tungsten mud concentrator has been using shaking table re-election + blanket cloth trough LiuCheng recycling black tungsten fine mud of tungsten, tungsten concentrate containing WO3 9%, the average recovery was 40%, including S 10%, including the As 5%, because of the low grade and impurity to exceed bid, is difficult to direct sales.

Aiming at these problems, study the pulsating high gradient magnetic separation - suspension vibration separator enrichment of preclassification table re-election joint process new technology of recovery of fine mud black tungsten, greatly improved the black tungsten fine clay ore dressing indexes. The technology industry in tungsten successful implementation, built YiTiao annual capacity of 45000 tons of production lines, since 2013 has remained steady production, concentration of tungsten concentrate containing WO3 increased by 20%, recovery rate increased by 40%, fine puree concentrate contains S reduced to < 1%, As low As < 0.5%, tungsten concentrate nearly 130 tons per year. After the implementation of the new technology, the economic benefit of the new technology was 213.987 million yuan in the two and a half years since 2013. Experts believe that in the results of the overall technology in the field of black tungsten fine clay mineral reached the domestic leading level, successfully solving the practical problems of enterprise production, has the very good reference to domestic similar enterprises.

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