Low grade fluorite and barite flotation separation method

Abstract

A low grade fluorite and barite flotation separation method uses waterglass as the inhibitor for silicious mineral and calcium carbonate mineral; uses oleic acid as the collector for fluorite and barite; and uses starch, sodium sulphate, hydrochloric acid and sodium hexametaphosphate as the inhibitor for barite mineral. The invention can perform flotation separation of low grade fluorite and barite effectively; under the condition that the given fluorite grade is 33.92%-40.41%, and the barite grade is 34.67%-35.33%, by mixing, flotation and separation, can achieves the fluorite concentrate with grade of above 95% and recovery rate of 75.5%-78.5%, and the barite concentrate with grade of 92.3%-93.27% and recovery rate of 75.2%-79.73%.

Description

1. Technical field

[0001] The invention relates to a mineral flotation separation method, in particular to a low-grade fluorite barite mineral flotation separation method. 2. Background technology

[0002] The existing fluorite and barite recovery methods at home and abroad generally use water glass as the inhibitor of siliceous minerals, and oleic acid or sodium oleate as the collector of fluorite minerals for recovery; while barite is mostly recovered by gravity separation equipment Recovery, there is also the use of flotation methods for recovery. However, when fluorite and barite appear together with associated minerals, currently only a single fluorite or barite mineral is recovered, which not only wastes resources, but also increases the storage pressure of tailings; especially the grade of fluorite and barite is only about 30%. When it appears in the form of associated minerals, there is no report on the simultaneous recovery of fluorite and barite. 3. Contents of ...