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.
Rao
S R
SR
Department of Mining, Metals and Materials Engineering, McGill University, Montreal, Que., Canada. Ram.Rao@mcgill.ca
Finch
J A
JA
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