China’s copper has a more dispersed distribution, low grade, selection and other difficult characteristics, and the majority of small, large and medium-sized mines less. According to the statistics of 2015, China’s copper concentrate copper production of more than 10,000 tons of copper mine only 18. This issue will be the 18 million tons of copper mine for a brief introduction to sort out.
First, China’s 18 million-ton mine
| sodium metabisulphite |
1, distribution and composition
China’s 18 million-ton copper mine from the geographical distribution point of view, mainly concentrated in the northwest (Xinjiang, Tibet, Qinghai, Inner Mongolia Bayannaoer), East China (Jiangxi, Anhui, Fujian), northeast (Heilongjiang, Inner Mongolia Hulunbeier), southwest Area (Sichuan and Yunnan).
China’s 10,000-ton copper mine is mainly concentrated in the large metal group, such as JCC (3), Zijin Mining Group (4) China Gold Group (3), Yunnan Copper Group (2), which Jinchuan Group Long Shoushan copper and nickel ore and China Gold Group of Hubei Sanxin gold and copper are associated copper, but the output comparable to the main copper mine, also classified as 10,000 tons of copper mine sequence.
2, resource status
| sodium sulfite anhydrous |
At present, China’s 18 million-ton copper mine average ore grade 0.75%, the highest grade 2.3%, the lowest only 0.36%, the overall lower grade ore. Copper metal resources 31.63 million tons, accounting for the country to identify the amount of copper resources 32.6%.
| sodium metabisulfite industrial grade |
At present, the Duobaoshan copper mine, Lara copper mine and some other mining mining will face changes in the veins to the pit mining change; pit mining will continue to deepen the scope of operations, Dahongshan, winter melon mountain and other mining depth has reached -1000m the above. The major copper mines are constantly overcoming the decline in resources in the deeper to increase the amount of resources to fill, to ensure that the mine service life.
3, production situation
As China’s copper mineral resources plaque did not lead to tons of copper mining cost higher than abroad (China’s 10,000-ton copper mine average cost of 33000-35000 yuan / ton), and social responsibility, historical burden heavier , With the copper concentrate copper demand gradually increased, in the face of self-sufficiency rate of the situation, thousands of tons of copper mines are currently in full production.
| sodium metabisulfite food grade |
China’s 18 in the production of 10,000 tons of copper mine in accordance with the output statistics, 2015 copper concentrate copper content of a total of 61.51 million tons, accounting for only 39.5% of the total output. Among them, the copper concentrate with an annual output of more than 50,000 tons of enterprises accounted for 3, Jiangxi Copper Dexing copper mine ranked first, followed by China Gold Group Wu Nuogu Tu mountain copper mine, Jinchuan Group of the dragon Shantou copper nickel ore as a companion resources among the top three.
4, mining technology
18 tons of copper, 5 open pit mining, 3 opencast + underground mining, 10 underground mining (1 natural caving method). Among them, the Zhongtan Group copper mine is China’s only one of the natural caving method of the mine, the scale of production reached 700 million tons / year, large scale, high efficiency, low cost (operating costs are empty, filling Law 1 / 6-1 / 3, the production rate is about 2-5 times).
| sodium metabisulfite |
At present, China’s 10,000-ton copper mine in the beneficiation process, all using flotation process, but in the grinding and mineralization grading each for their own resources to make a different process of targeted processing.
5, mining equipment
Equipment assembly, large-scale production of large-scale copper mine in China’s large-scale production operations, part of the equipment to achieve large-scale, automated, intelligent and effective to improve production efficiency, but the old mine equipment construction is lagging behind the new mine.
| sodium bisulphate |
In mining mining, large-scale mining equipment is significantly larger, high efficiency. 150 tons of copper metal production scale Dexing copper mine has 200 tons of tub, 35 square shovel than 80,000 tons of scale Wu Nuogu Tu Shan copper molybdenum ore 100 tons of tub, 10 side shovel more large, Of the mines are more to 15-35 tons of tub, 4-6 square shovel-based, pit mining operations in the scrapping and drilling and other international advanced equipment has been China’s 10,000 tons of copper mine to absorb and get a good Widely used, some large-scale mine shovels and modular drilling equipment has completely replaced the backward diesel engine equipment.
6, the new or expansion of the 10,000 tons of copper
China’s construction (expansion) of 10,000 tons of copper mine 7, involving the new copper concentrate copper content of 355,000 tons, will be in 2017-2018 to get a certain capacity release.
| sodium bisulfite |
Second, the main problems and measures facing
China’s 10,000-ton copper mine with the increase in mining life, faced with reduced resources, increased depth of mining and other issues, combined with environmental responsibility, cost increases. At present, we must reduce the efficiency, prospecting and prospecting, improve the technical indicators to ensure that the output, the benefits of double standards, and in a deeper comprehensive stage, the production of many challenges facing the problem, is highly concerned about market changes, Based on the technology, to the digital intelligent, high efficiency and low cost, low pollution direction, the realization of the mine in a limited period of service quality and safety protection benefits.
| http://www.ferrousfumarate.net |