Flotation method of low ore grade manganous carbonate ore

Abstract

The invention relates to a process that raw mine is ground into powder which is added with water to be prepared into pulp. Under certain pH value, inhibitor of carboxymethylcellulose nano solution, industrial water glass and tannin solution are added proportionally for absorbing calcium, magnesium and silicate. Then, sodium oleate is added as a collector for closed circuit circulation floating. Foam products after the floatation are flushed by water and then enter a sedimentation tank for the sedimentation or the pressure filtration. Thus, manganese concentrate fines above 20 percent are obtained. In the process, floatation is implemented on low grade poor manganese mine containing 10-14 percent of manganese, carbonaceous rock with the manganese content of 4-9 percent and electrolytic manganese leached slags with the manganese content of 1-3 percent to obtain manganese ore fines, the manganese content of which reaches above 20 percent. The recovery of manganese is more than 85 percent. And non-manganese emission for tailings can be realized. The manganese resources are lead to have extremely high utilization rate. Produced products can also lower acid consumption and ammonia consumption for electrolytic manganese production of downstream industry of manganese mines.

Description

technical field [0001] The invention relates to a low-grade manganese carbonate ore flotation method. Background technique [0002] Most of the manganese carbonate ore in my country is low-grade poor manganese ore. With the increase of market demand and mining volume, high-grade manganese-rich ore is getting less and less. It has become the current mineral processing industry to concentrate low-grade manganese carbonate ore. A big hit. In manganese ore, the main components are manganese carbonate, calcium carbonate, magnesium carbonate, quartz, silicate, pyrite, which contains about 4-14% of manganese carbonate, about 10-30% of calcium carbonate and magnesium carbonate, silicon Salt is about 20-30%, iron is about 5%. Several main minerals are generally intercalated in the form of fine particles, resulting in the dispersion of various minerals in the deposit space. Among the various mineral aggregates, the composition and chemical properties of the minerals are somewhat uni...

AI Technical Summary

Problems solved by technology

[0003] At present, the method of magnetic separation is mainly used to beneficiate manganese ore at home and abroad, but the enrichment degree of magnetic separation is not high, and it can only increase about 5 grades, and the recovery rate of manganese is also very low. Most magnetic separation plants can only The recovery rate of manganese is controlled within 40%, which not only consumes a lot of energy but also wastes a lot of raw ore