Extraction of thallium from dust from burning\nWednesday, 07 February 2017\n\n\n\nElectric filter dust contains 0.015 to 0.6 % tl. The main components of dust are copper, lead, zinc cadmium iron, mainly in the form of oxidants. The dust sometimes also contains germanium. Dust leaches when heated with diluted (5%) sulphuric acid for a long time. In this case up to 90% of thallium passes into solution. A significant amount of thallium can also be recovered by leaching water, as thallium oxide is soluble in water. When dissolved in sulphuric acid, lead remains in sediment. Zinc cadmium, copper, iron are transferred to the solution. From the sulfuric acid solution, thallium is deposited as chloride by the addition of hydrochloric acid or sodium chloride and the resulting chloride is treated as described above. In other technological options, copper cadmium and thallium are first deposited with zinc dust from the solution, followed by cement metals dissolved and thallium chloride from the solution.\n\n\n\n\n\nFacebookclassmate mirtwitterlivejournalextraction of thallium and cadmium from dust obtained by melting lead in mine furnaces extraction of thallium from zinc production residuesthallium extraction from zinc production residuesthallium extraction from industrial waste sources of thallium application thallium chemical compounds thallium electrolytic discharge India from solution extraction India from waste refining of black lead extraction India from fires
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Extraction of thallium from dust from burning
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