Flotation inhibitor for separating fine stibnite from pyrite and application of flotation inhibitor

Abstract

The invention discloses a flotation inhibitor for separating fine stibnite from pyrite and application of the flotation inhibitor, and the flotation inhibitor is composed of sodium carboxymethyl cellulose, polyaspartic acid, sodium silicate and sodium sulfite in a mass ratio of (1.2-2.4): (0.4-0.6): (1-2): (1-2). The flotation inhibitor can be applied to separation flotation of fine-grained stibnite and pyrite, has an obvious inhibition effect on pyrite, has a weak stibnite inhibition effect, can achieve a good separation effect, can treat fine-grained stibnite with the raw ore stibium grade of 30-35%, and can obtain stibium concentrate with the stibium recovery rate of more than 85% and the stibium grade of more than 45%. In a conventional stibnite pyrite separation flotation inhibitor, cyanide with the good effect has toxicity, the cost is high, environmental pollution is large, and the inhibitor C is environmentally friendly and low in price. The inhibitor disclosed by the inventionis a combination of conventional industrial medicaments, is simple to prepare and is easy for industrial implementation.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a flotation inhibitor for separating fine-grained stibnite and pyrite and application thereof. Background technique [0002] Antimony ore resources have become poorer, finer, and more complex, and the mining and utilization of antimony-containing complex polymetallic sulfide ores has become one of the main sources of antimony. Most of the antimony deposits are dominated by stibnite, followed by bisulphate minerals such as stipyrite and brittle stibnite. The crystallization structure of stibnite is chain, and the chain type of common cleavage plane rupture is usually weak molecular bond, so the floatability of stibnite is better, among which, under weak acidic conditions, stibnite has the best floatability Well, activation is required for flotation under neutral alkaline pulp conditions. Commonly used activators for stibnite include heavy metal salts such ...

AI Technical Summary

Problems solved by technology

[0003] Lime, sodium sulfite, cyanide and other inorganic substances are commonly used as inhibitors for flotation separation of stibnite and pyrite. Since fine-grained minerals have high surface energy, the selectivity of combining with flotation reagents is worse. Conventional Flotation agents are difficult to effectively separate fine-grained stibnite from pyrite

[0004] Recently, the application of dextrin, tannin, sodium humate and other organic substances as inhibitors has also begun to appear. The combination of inorganic inhibitors and organic inhibitors can give full play to their synergistic effects, which is conducive to improving the mineral flotation index. However, the combination of some current inhibitors, although the inhibitory effect has been improved, is not ideal for the separation of fine-grained stibnite and pyrite, and the improvement of the grade of stibnite is limited. An important direction of flotation inhibitors for the separation of stibnite and pyrite

Images