Ore beneficiation plant process Woxi respectively from Woxi pit and pit fish Hill, are gold, antimony, tungsten coexistence ore, ore properties but quite different, Woxi pit ore, gold coarser nature (to the naked eye gold - about 15% points, microscopic gold 70%, 15% submicroscopic gold), the gold amalgamation can 18.18% ~ 29.95%. ray studies showed that the gold main stibnite, pyrite symbiotic Or filled in the fractures of pyrite and quartz . Both the scheelite and the stibnite are unevenly distributed in thickness (the former is almost completely dissociated at 0.1 mm, and the latter is still not completely separated to 0.1 mm). Compared with the Woxi Hangkou ore, the Yu'ershankeng ore has the following five characteristics: First, the gold has a fine grain size and is very small in mercury; the second is that the quartz gold is higher than the Woxi ore; the third is black and white tungsten. The ratio is different (the Huershan ore is dominated by black tungsten and the Woxi ore is dominated by white tungsten); the fourth is that the content of gold, tantalum and tungsten in the ore is lower than that of Woxi; the fifth is that the ore powder ore (mud) is more . Therefore, the Yuershan ore is harder to choose than the Woxi ore.
2, the selection process
The current selection process is a two-stage grinding-re-floating combined process. Before the process of this principle was determined, from 1964 to 1965, small tests and industrial tests of single flotation were carried out on Woxi ore. By comparison, the single process has the following disadvantages: 1. The overall recovery of tungsten is 2 to 3% lower; 2. The yield of white tungsten coarse concentrate is high, and the cost of low tungsten processing is high; 3. The coarse grain in the inconvenient recycling process Body gold; 4, sheet metal flotation and white tungsten flotation of the drug consumption. In 1986, Yu'ershan Minerals commissioned the Changsha Research Institute of Mining and Metallurgy to conduct a beneficiation process test. The recommended principle flow of the test is the same as the principle process for handling Woxi ore.
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