[Ten years of development of chemical equipment] 652-2017 Hydrometallurgical valves for high temperature and high pressure leaching process systems

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Look at the great development of chemical equipment in the past ten years and praise the prosperity of China. Replies will be rewarded and discussed. ------------------------------------------------------------------------------------------------ In December 2017, the hydrometallurgical valve developed and produced by the 11th Institute of the Sixth Institute of the Aerospace Science and Technology Group for the user's high-temperature and high-pressure leaching process system. After on-site assessment, the product performance is superior to similar products at home and abroad, and the service life is more than 700 times longer than similar domestic products. At present, pyrometallurgical technology is widely used in the non-ferrous metal industry to extract rare and precious metals. However, this technology can easily cause a large amount of harmful gas emissions, and the cooling of slag produces a large amount of wastewater that needs to be treated. To this end, 11 institutes have taken advantage of the advantages in the field of special valve technology, relying on the aerospace technology application industry development platform, and through the operating mechanism of rapid response to the market, successfully developed a variety of valve products for sulfuric acid, hydrochloric acid, aqua regia, nitric acid, chloroauric acid and other media, forming a variety of valve products. Patented products such as stage axial flow pressure reducing valves and sleeve type pressure reducing valves, as well as special discharge switching valves, special wear-resistant powder switching valves and other products that replace imported products, have formed a number of series of valves with independent intellectual property rights in a short period of time, and have overcome global problems in this field.