Effects of silver mining and smelting process on the environment is the biggest waste, waste water (liquid) and flue gas (dust). In recent years, due to the importance of environmental protection of our country, many silver-ferrous metal production factories and mines of the "three wastes" pollution control has been improved and, as Fankou Guangdong, Jiangsu Qixiashan silver, lead and zinc ore on the basis of a large number of experiments, successfully Tailings are used for underground filling. Among them, Fankou Mine produced 620,000 tons of tailings in 1985 and 1986, and 40% of them have been used as underground fillers, which greatly reduced the pollution caused by tailings to the surrounding environment. Zhuzhou Smelter The original silver smelting converter emits 3,500 standard m 3 of smoke per hour, and the average dust content per cubic meter is 55g. The arsenic content in the dust is 18% to 25%, 锑 50% to 55%, which seriously exceeds the “three wastes†prescribed by the state. Emission standards, from the early 80s in the smelting production process, the addition of two-stage cooling, two-stage dedusting system and the method of gas distribution between the silver furnace and the precious lead furnace, the dust collection rate is over 90%, and the arsenic and antimony dust are recovered from the annual 400 ~ 500t, thus eliminating the harm of arsenic (smoke) smoke in the gold and silver recovery system. However, we should see that many old factories and mines and local small and medium-sized factories and mines in the country did not fully consider the requirements of environmental protection when they built the plant. The pollution problem after the project was put into production was serious. The dust and flue gas could not be prevented and the wastewater was not completely treated. The task of "three wastes" governance is still very arduous.Drone Battery 12S
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