Flotation method for micro-fine particle complicated jamesonite

Abstract

The invention discloses a flotation method for micro-fine particle complicated jamesonite. The flotation method comprises the steps of carbon-lead separation, lead-mud separation, lead-sulfur separation and the like; sulfuric acid is used as a pH regulator; a mixture of sodium carbonate, zinc sulfate and sodium sulfite is used as a zinc inhibitor; a mixture of ammonium dibutyl dithiophosphate and sodium butyl xanthogenate is used as a collector. The flotation method has simple and practical technology, and a small amount of medicament is used; the production is performed under weak-acid condition, and the recovery rate and concentrate grade of the jamesonite are improved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a flotation method of lead-antimony ore. Background technique [0002] Brittle pyrotite is a special type of mineral, its main feature is that it is dispersed in zinc-sulfur and other polymetallic deposits, it is brittle and muddy, and it is closely symbiotic with carbon in the minerals, and the lead-antimony coarse concentrate The particle size is extremely fine, so it is extremely difficult to separate the minerals by gravity separation, and it is also impossible to remove the fine-grained gangue by grading desliming. In the normal mineral processing process, it is very easy to be lost in the overflow through the floating state, and it is difficult to recover; If it is not recycled, it will seriously interfere with the recovery of other minerals and destroy the overall beneficiation process because of its strong adsorption to chemicals. [0003] At present, the recove...

AI Technical Summary

Problems solved by technology

[0007] The lead-antimony coarse concentrate has a high carbon content of 8.45%. Carbon is very easy to adsorb chemicals and cover the mineral surface to hinder the action of minerals and chemicals, resulting in large consumption of chemicals and low recovery rate and grade of lead and antimony.

[0008] (3) The process fails to achieve effective separation of ore and mud

[0009] Due to the influence of the main process and equipment factors, the brittle antimony lead ore has serious sliming, and the -10μm particle size exceeds 40%, so it is impossible to remove the slime through conventional gravity separation and desliming measures

In flotation, the finer the particle size, the smaller the difference in buoyancy between the ore and the gangue, and the ore mud gangue is easy to absorb chemicals due to its large specific surface area and is easy to cover the mineral surface to hinder the action of minerals and chemicals, thus affecting Brittle pyrotite recovery

In production, the method of reducing the concentrate yield can only be adopted to ensure the quality of the concentrate, but this method leads to a low recovery rate of lead and antimony

[0010] (4) The process fails to achieve effective separation of lead and antimony from other sulfide ores

This method has improved the concentrate grade of brittle pyrotite to a certain extent, but there are still some deficiencies, such as under weakly alkaline conditions, although iron-containing minerals such as pyrite and pyrrhotite are suppressed, the same It also has a certain inhibitory effect on brittle styrofoam and lead ore, and at the same time accelerates the hydrolysis of ethionyl nitrogen, so the recovery rate of lead and antimony is low, the yield of lead and antimony concentrate is low, and the loss of lead and antimony metal in tailings is relatively large

Images