A carbonaceous organic matter deposition type low-grade manganese ore flotation process

Abstract

The invention belongs to the technical field of manganese ore beneficiation and discloses a carbon organic matter deposited low grade manganese ore flotation technology. By adopting a reverse and direct flotation process, an anionic fatty acid collecting agent and a foaming agent diethyl phthalate are used for decarburization and dephosphorization by floatation first, so that the content of carbonorganic matters in ore pulp is reduced, and the dosage of the collecting agent is reduced effectively, and moreover, the foam amount in the follow-up direct floatation process is reduced, the floating selectivity is improved, and mechanical entrainment and conveying difficulty of foam are avoided, so that the floating process is easily controlled and stabilized, and meanwhile, the beneficiation cost is lowered to a great extent, thereby providing a new concept for the carbon organic matter deposited low grade manganese ore flotation technology.

Description

technical field [0001] The invention belongs to the technical field of manganese ore beneficiation, and in particular relates to a reverse-direct flotation process of carbonaceous organic matter deposition type low-grade manganese ore. Background technique [0002] In modern industry, manganese and its compounds are used in various fields of the national economy. Among them, the iron and steel industry is the most important field. The amount of manganese used accounts for 90-95%. It is mainly used as a deoxidizer and desulfurizer in the process of ironmaking and steelmaking, or used to make alloys. The remaining 10-5% of manganese is used in other industrial fields, such as chemical industry (manufacturing various manganese-containing salts), light industry (used in batteries, matches, printing paint, soap making, etc.), building materials industry (coloring of glass and ceramics) agent and fading agent), defense industry, electronics industry, environmental protection and ...

AI Technical Summary

Problems solved by technology

At present, the more reasonable separation and enrichment process of this type of manganese ore is direct flotation. This process uses anionic collectors to float manganese minerals in weakly alkaline pulp to obtain high-grade manganese concentrates. However, in the direct flotation of sedimentary low-grade manganese ore containing carbonaceous organic matter and phosphate ore, due to the existence of carbonaceous organic matter, a large amount of anionic collectors will be adsorbed, and the amount of collectors will be doubled. Otherwise, flotation cannot The increase in the amount of collector will also increase the amount of foam in positive flotation, reduce the selectivity of flotation, easily cause mechanical inclusion of foam and difficulty in transportation, the flotation process is difficult to control and stabilize, and at the same time lead to high beneficiation costs increase in magnitude

In addition, in the above flotation process, phosphorus minerals are enriched in manganese concentrate, resulting in high phosphorus content in manganese concentrate, and conventional direct flotation cannot obtain better quality manganese concentrate

At present, the technical and economic problems in the flotation process restrict the industrialization of the sedimentary low-grade manganese ore flotation process containing carbonaceous organic matter and phosphate rock.

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