Analysis of the problems facing the development of mining industry in China

Analysis of the problems facing the development of mining industry in our country: the mineral resources dwindle, increasing the difficulty of mine ore benefit ability, relatively backward technology, shortage of talent, technology, information scattered, state enterprise and mine must carry on the system summary of the beneficiation technology, mining technology and our country actual situation of mine production from two aspects of theory and practice and fully realizing the integration of technology resource scientifically.
The underground mining of the ore is called the ore; ore generally consists of useful minerals and gangue. Beneficiation ball The ore grade is low and it cannot directly smelt, which needs to carry on the processing, remove most of the gangue and harmful ingredients and make useful mineral enrichment and concentrate for the next step to use. The process of this processing of the ore is called dressing. For example, black tungsten ore generally contains a large number of gangue minerals, such as quartz, after dressing removal of gangue large amounts of quartz, and so on, the tungsten minerals enriched, become concentrate products. Some ore contains harmful elements to the smelting process, such as sulfur and phosphorus in iron ore concentrate, their content can not be too high or make iron brittle hair. Especially some polymetallic ore, which contains the metal components such as Cu, Pb, Zn, Fe is often mutual damaged during smelting, only after dressing to get a plurality of concentrate products can be respectively smelting. In addition, such as technical and economic effects of processing on smelting is also very obvious, Forged Balls and Casting Balls copper concentrate grade is increased from 15% to 16%, the recovery rate is increased by 0.1 – 0.15%, the production capacity increased by 6 – 8%, fuel consumption reduced by 6 – 7%; and as the improvement of iron concentrate grade 1%, then the blast furnace pig iron production can increase 2.5%, coke rate decreased by 1.5%. 
To sum up, the purpose is to remove the large gangue mineral content in ore and harmful element, make a useful mineral-enriched, rolling ball or to make all kinds of useful mineral paragenesis separated from each other, get one or several useful mineral concentrate products. Visible, dressing is very important for the development of mining and making full use of the mineral resources.

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