Jinan Yuxing Chemical Plant was built in 1919, has 80 years of history is a state-owned large-scale integrated inorganic chemical companies, it is the largest chromium salt and titanium white powder production base.
Main…
The following factors should be considered:
First, block the air leakage passage and improve the tightness of various ventilation structures. When the main air duct is severely leaking, it is necessary to take measures to prevent lea…
   The structure of this magn…
For the development of Yunnan Chihong Co. deep lead zinc resources, Beijing Research Institute of Mining and Yunnan Chihong Co. creatively developed "and the like…
The osmotic cyanidation production technology operation process includes:…
Key to improve the recovery of heap leaching is enhanced permeability of the heap, so that with the free gold ore leaching solution in sufficient contact and reaction occur. How to increase the oxygen content in the immersion gold process is a…
Analysis of Figure 1 gives the following information.
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(A) before Valley Copper Mine in Jiangsu Province Ningwu old male railway station (i.e. Town Board) 8.5 km southeast.
The mine began construction and construction in 1969 and …