C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 1/00 (2006.01) B03D 1/012 (2006.01) B03D 1/016 (2006.01) B03D 1/06 (2006.01) C08L 97/00 (2006.01) C22B 15/00 (2006.01)
Patent
CA 2698250
Disclosed are compositions and methods for separating gangue material from metallic sulfide ores. The composi-tions typically include a lignosulfonate and do not include a cyanide salt. Suitable lignosulfonates may include lignosulfonates, for example hardwood lignosulfonate having a weight average molecular weight of about 3 kDa to about 12 kDa and having a relatively low sulfur content and a relatively low sulfonate content.
L'invention concerne des compositions et des procédés permettant de séparer la gangue de minerais métalliques sulfurés. Les compositions comportent d'ordinaire un lignosulfonate mais aucun sel de cyanure. Les lignosulfonates appropriés peuvent comporter des lignosulfonates, par exemple un lignosulfonate de bois de feuillus ayant un poids moléculaire moyen compris entre environ 3kDa et environ 12 kDa et une teneur en soufre relativement faible ainsi qu'une teneur en sulfonate relativement faible.
Bushar Lori L.
Gargulak Jerry D.
Lignotech Usa Inc.
Oyen Wiggs Green & Mutala Llp
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