F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 17/00 (2006.01) C22B 15/00 (2006.01) F22B 1/18 (2006.01) F22B 37/48 (2006.01)
Patent
CA 2273903
It is an object of the present invention to prevent forced oxidation of dust in copper flash-smelting works, reduce the adhesion of dust to boiler the water tube, and improve the on-line ratio and productivity index. The temperature at the WHB radiation section outlet is greatly reduced and the atmosphere within the WHB radiation section is controlled by blowing a mixed gas of nitrogen gas and air from the feed aperture 6 established in the wall into the boiler radiation section 2 of the waste heat boiler of the flash-smelting furnace in a copper flash-smelting works. As a result, a reduced amount of dust is generated. Moreover, the dust removed from the off-gas has reduced adhesion, the exhaust gas having been generated within the flash-smelting furnace 1 and sent to the sulfuric acid works via the boiler radiation section 2, boiler furnace outlet 8, boiler convection section 3, cyclone 4, and electrostatic precipitator.
Hoshikawa Yoshihiko
Kawaguchi Izumi
Shirasawa Tsuneo
Yamada Koji
Dennison Associates
Dowa Mining Co. Ltd.
Kosaka Smelting & Refining Co. Ltd.
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