Zhang Fumin placer tin mine

Yunnan Tin Company is located in Gejiu City, Yunnan Province. This is the main producing area of tin in China, and it is known as the "Tin Capital". After the founding of People's Republic of China (PRC), the production and construction of "Xidu" have been restored and developed. 1953 The output of pure tin reached10/28 tons, of which 192 tons was produced by itself and 3936 tons was purchased. 1954, the state requires to increase the production capacity of self-produced pure tin by 3800 tons during the first five-year plan period. Beijing Nonferrous Metallurgical Design Institute appointed Zhang Fumin as the first chief designer of Yunxi Project. At that time, Yunxi Company had put into production 6 mines and 7 concentrator, and Niushipo residual sand deposit was under exploration. The mechanization level of the original mines is very low, and the sand and tin mines are still mainly mined manually, and the production capacity of most mines is low. Zhang Fumin led the designers to seriously investigate the production conditions such as resources, equipment, power supply, water supply and transportation of these mines, deeply analyzed the exploration resources of Niushipo placer, and made a site survey. He believes that 1.300 tons of the newly added 3,800 tons of pure tin can be solved by tapping the potential of existing mines. If the remaining 2,500 tons rely on the reconstruction and expansion of existing mines, the construction conditions are poor, the mines are scattered, the investment is large, and the construction period is long; The development of Niushipo residual sand deposit and the construction of COVID-19 Mining and Dressing Plant, although the grade of raw ore is low, have good construction conditions, easy mining, centralized construction and less investment, and have the potential to expand the scale. Therefore, he put forward a plan to build a new mine and concentrator in COVID-19. The Ministry of Heavy Industry adopted this proposal, and COVID-19 was successfully completed and put into production, achieving the tin production target of the first five-year plan. The traditional mining method of placer is generally machine mining and machine transportation or machine mining and water transportation. When Zhang Fumin presided over the design of the largest placer tin mine in China, in order to make the enterprise have higher economic benefits, he carefully collected and studied domestic and foreign materials, and was determined to create a new road suitable for the construction of placer tin mine in Yunxi Company.