The Way To Fully Recycle The Ore Tailings
Tailings recovery equipment is Chinas recent election (iron) mining industry
, tailings production and recycling of used-to-date machinery. Its production: Mine is a waste of mineral processing equipment for re-election of the net, recovery, the recovery rate reached a new level of the sector, the production of its single, unique way, (also available with the mill, grind, and other devices) Maximum limit to save at the end of the state-owned mineral
It was the best materials, design and reasonable structure, easy to use and high economic returns. Iron mining in the election, from irreplaceable role in the country each year to restore hundreds of millions of dollars of economic losses, is more user took to get rich, it benefits the country and broad prospects, the market potential is more The laid-off workers, people get rich mining area well-off capable of extremely helpful in our hands linked to production and recovery Mineral our industry to a new level of the King to make our contribution to the community.
In tailings selection production practice, ore dressing factory annually discharge 5 million tons tailings. Tailing grade is 7.62% before selection, and the final grade of tailings is 6.15% through selection again. Dressing workshop discharges total tailings, we select coarse fine ore from which by HS type magnetic recycling machine. Then rough fine mine will be sent to separate established of again selected factory with pump. The process is weak magnetic selection, mill mine ratings, magnetic dehydration slot, weak magnetic selection, fine sieve, weak magnetic selected, filter, and finally we obtained eventually fine mine.
In 2005, the concentrator factories adopt high frequency vibrating screen and composite tailings selection technology and flashing magnetic separator. As a result, the ore tailings final grade was reduced by an average of 2.44%. Figures showed that we annually may elect from the tailings 31,190,000 tons of iron ore concentrate, with the concentrate grade 67. 13%, which can achieve annual benefit of RMB 54 million. Production practice of iron ore tailings re-election indicates that ore concentrator factories discharge 2.28 million tons of tailings a year. At present, the tailings discharged are about 400million tons to 500 million tons in China, accounting for one third of industrial waste. Among of them, the metal tailing takes for one forth, metallurgy and boiler slag take for 26%, chemical slag takes for 4%, fly ash and gangue take for 35%.
Therefore, it is of great practical significance for the recovery of valuable metals and minerals in the non-ferrous metal mine tailings; In terms of gold mine tailings comprehensive recovery, most of current gold grade in the gold mine tailings is more than 0.5 g/c, some of them even as high as 45/t. At the same time the gold tailings also contains Cu, Pb, Zn, s, Fe, Ag, Sb, Wu and other valuable metallic elements, so the value of comprehensive utilization is very high.
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by: libby
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