Flotation Behavior of Quartz and Hematite in the Presence of Alkyl Hydroxypropyl Amine

doi:10.12068/j.issn.1005-3026.2017.12.022

Abstract

Abstract: Flotation behaviors of quartz and hematite in the presence of a new collector alkyl hydroxypropyl amine (NDIA) were investigated through flotation experiments. Combined with quantum chemical calculation and zeta potential analysis， the adsorption mechanism of NDIA on the mineral surface was studied. Flotation results of pure mineral showed that the flotation recovery of quartz was above 92% and the flotation recovery of hematite was around 50%， when the dosage of NDIA was 33.33mg/L， and pH value of the pulp was set from 4.50 to 8.00. Flotation results of artificial mixed mineral showed that quartz and hematite were effectively separated， when the dosage of NDIA was 33.33mg/L， the dosage of starch was 13.33mg/L and pH value of the pulp was set from 4.50 to 8.00. The results of quantum chemistry calculation indicated that NDIA had a better flotation performance than DDA to quartz. According to the results of zeta potential test，NDIA was adsorbed on both quartz and hematite surface， but the adsorption ability of NDIA on quartz surface was much stronger than that on hematite.

Key words: alkyl hydroxypropyl amine, quartz, hematite, quantum chemistry, zeta potential

CLC Number:

TD923.14

LIU Wen-bao， LIU Wen-gang， WANG Xin-yang， ZHANG Yao. Flotation Behavior of Quartz and Hematite in the Presence of Alkyl Hydroxypropyl Amine[J]. Journal of Northeastern University Natural Science, 2017, 38(12): 1775-1779.

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