In the refining application of rotary kiln

In the refining  application of rotary kiln

Smelting process in zion, thick with hot melt chromatography of tin of residue produced (molten slag chromatography) contains a tin of 25-35%, iron 10 ~ 30%, arsenic 10 ~ 20%. In order to reduce the harm of arsenic in the production, use rotary kiln roasting to take off the arsenic. In broken melting slag chromatography of bituminous coal with 5%. Heated to 800-900 after aC, arsenic is arsenic trioxide volatile chang into the furnace gas, to take off the purpose of arsenic.From the collection of arsenic in the smoke, can be obtained by the purification containing arsenic trioxide 97 C 99% of white arsenic (arsenic) by-product. Use the heat resistance wire distillation kiln, rotary kiln YaoBi temperature of 600 ~ 700. C, exhaust the more paragraphs condensation, collect dust that white arsenic. The rotary kiln volatile roasting can also be used for the removal of the burden to volatile impurities and scare metal. Such as zinc plant month j kiln to smoke two times about fluidized bed roasting, take off the fluorine, chlorine, output for system with second ore group.

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