B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/11, 53/354
B03D 1/02 (2006.01) B03B 9/04 (2006.01) B03D 1/008 (2006.01) B03D 1/08 (2006.01) C21B 3/04 (2006.01) C22B 1/00 (2006.01) C22B 7/02 (2006.01)
Patent
CA 1163382
"Process of treating dust containing zinc and lead and derived in an iron or steel making process" "ABSTRACT OF THE DISCLOSURE" Zinc and lead are separated together out of dust derived from a gas-cleaning installation in iron or steel making by a flotation-separation treatment. In order economically to provide a good separation of these metals and to leave a residue which is re-usable in an ore- preparation process in the iron and steel industry, the flotation-separation treatment is at a pH of 7 to 9 and is effective to achieve a separation, according to size of the dust particles, of a floated component in which the zinc and lead are concentrated and a non-floated component which is suitable for re-use.
376938
Heijwegen Cornelis P.
Kat Willem
Estel Hoogovens B.v.
Ridout & Maybee Llp
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