C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/236, 53/354
C22B 7/02 (2006.01) B01D 47/00 (2006.01) B01D 53/68 (2006.01) C02F 9/00 (2006.01) C22B 7/04 (2006.01) C22B 9/10 (2006.01) C22B 21/00 (2006.01)
Patent
CA 1160059
ABSTRACT OF THE DISCLOSURE The invention relates to a process for the scrubbing of the flue gases and the recovery of the salts as contained in the furnace slags for the remelting of aluminum scraps with a saline flux, by washing the slags with water and using the brine thus obtained for scrubbing the flue gases, until saturation and the separation of the salt to be recycled to the furnace as a flux is obtained. The installation for effecting in this process comprises an installation for scrub- bing flue gases and recovering the salts removed from an aluminum scrap smelting furnace using a salt flux for the production of secondary aluminum, comprising means for washing the saline slags removed from the furnace with water to produce a brine, a Venturi scrubber for the flue gases, means for feeding said brine to said scrubber or a scrubbing liquor, a filter for the brine discharged from the scrubber for separating a solid salt phase crystallized therefrom, means for recycling the filtered brine to the scrubber, and means for recycling the crystallized salt to the smelting furnace as salt flux.
365331
Marks & Clerk
Tonolli (a.) & C. S.p.a.
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