湖北某地高硫铝土矿浮选脱硫试验研究

针对湖北某地典型的高硫铝土矿进行了浮选脱硫试验研究,采用单因素试验方案,重点考察了磨矿细度、矿浆p H值、捕收剂用量、抑制剂用量、活化剂用量及起泡剂用量对浮选脱硫的影响,得到了浮选脱硫的最佳条件。在最佳条件下,采用两粗两精两扫工艺流程可将原矿中的硫含量由3.56%降到0.25%,达到了氧化铝工业生产要求;同时获得了S品位24.05%、产率10.94%的合格硫精矿。

Flotation Technology Optimization for Desulfuration of High-Sulfur Bauxite from Hubei

Flotation processes were introduced for desulfuration of typical high?sulfur bauxite in Hubei Province. Optimized parameters for flotation desulfurization were proposed according to the single factor experiment, where the influences of grinding fineness, pulp pH, and dosage of collector, inhibitor, activator and frother on desulfurization effect were intensively studied. With a flowsheet consisting of two stages of roughing, two stages of cleaning and two stages of scavenging, the sulfur content can be reduced from 3.56%for the raw ore to 0.25%for the bauxite concentrate, which meets the requirements for alumina production. Meanwhile, a qualified sulfur concentrate grading 24.05% with a yield of 10.94% can be produced.