Processing of metallurgical residues by flotation - bench-scale studies on two industrial products.
Resource recovery from two metallurgical residues by flotation was investigated applying an electrostatic model to select initial conditions. The first, a sulphation roast/water leach residue, was processed to float lead sulphate, comparing dodecylamine and xanthate collectors. From the second, a neutralization residue, gypsum, was recovered by reverse flotation of ferric hydroxide, comparing oleate and sulphonate collectors. In both cases, further upgrading by acid leaching was considered.
Department of Mining, Metals and Materials Engineering, McGill University, Montreal, Que., Canada. Ram.Rao@mcgill.ca
S R
SR
Rao
J A
JA
Finch
D000588:Amines / Q000737:chemistry; D002118:Calcium / Q000032:analysis; D002133:Calcium Sulfate / Q000737:chemistry / Q000302:isolation & purification*; D005290:Ferric Compounds / Q000737:chemistry; D007220:Industrial Waste; D007501:Iron / Q000032:analysis; D007854:Lead / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D008669:Metallurgy; D008962:Models, Theoretical; D012037:Refuse Disposal / Q000379:methods*; D055672:Static Electricity; D013464:Sulfuric Acids / Q000737:chemistry; D015032:Zinc / Q000032:analysis
D000588:Amines; D005290:Ferric Compounds; D007220:Industrial Waste; D013464:Sulfuric Acids; D007854:Lead; C021024:ferric hydroxide; C032722:lead sulfate; D007501:Iron; D015032:Zinc; C033158:sulfuric acid; D002118:Calcium; D002133:Calcium Sulfate; C003935:dodecylamine