Process of drying sulfide ores in direct contact with hot...

C - Chemistry – Metallurgy – 01 – B

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23/111, 53/368

C01B 17/76 (2006.01) C01B 17/52 (2006.01) C22B 1/00 (2006.01) F27D 17/00 (2006.01)

Patent

CA 1209787

The moist ores are dried in direct contact with hot dry tail gas from a contact process plant for producing sulfuric acid. The dried ores are roasted, the SO2-con- taining gases produced by the roasting are processed in the contact process plant to produce sulfuric acid, and the tail gases from the contact process plant are heated up with sur- plus heat from the contact process plant.

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