Abstract
Selective flocculation of iron ores is extremely sensitive to the type and amount of soluble salts in pulp solutions. Chemical precipitation of alkaline earth ions combined with ultrasonic treatment deactivates their adverse effects without using any environmentally ill-defined reagents. The manner in which ultrasonic treatment affects starch adsorption on hematite, dissolution of quartz, and the selective flocculation process was investigated. Selective flocculation tests were conducted in the presence of up to 400 ppm calcium ion on a quartz-hematite mixture by precipitation as calcium carbonate, and the role that silicate ion generated by ultrasonic treatment plays in achieving the selectivity of separation is discussed.
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SME preprint 87-34, SME-AIME Annual Meeting, Denver, CO, February 1987. MMP paper 87–609. Discussion of this paper must be submitted, in duplicate, prior to Jan. 31, 1988.
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Manukonda, V.R., Iwasaki, I. Control of calcium ion via chemical precipitation — ultrasonic treatment in selective flocculation. Mining, Metallurgy & Exploration 4, 217–222 (1987). https://doi.org/10.1007/BF03402696
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DOI: https://doi.org/10.1007/BF03402696