Beneficiation method to increase production indexes of carbonaceous gold ore and reduce influence of production backwater upon production indexes

A technology of production index and beneficiation method, applied in flotation, solid separation and other directions, can solve the problems of large influence of flotation process and flotation index, high turbidity of production backwater, and inability to obtain results, so as to reduce influence and improve beneficiation index and the effect of improving economic benefits

CN108906337AActive Publication Date: 2018-11-30NORTHWEST RES INST OF MINING & METALLURGY INST

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: NORTHWEST RES INST OF MINING & METALLURGY INST
Publication Date: 2018-11-30

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Abstract

The invention discloses a beneficiation method to increase production indexes of carbonaceous gold ore and reduce influence of production backwater upon production indexes and belongs to the technicalfield of ore processing. The beneficiation method herein includes: performing wet grinding, adding the conditioner, sodium hydroxide, and the water purifier MFA, and performing pulping; adjusting post-grinding pulp to suitable concentration, adding an activator, a collector and a foamer to carry out quick floatation so as to obtain gold concentrate 1 and coarse tailings; adding the water purifierMFA to grind the coarse tailings again, and performing secondary floatation to obtain gold concentrate 2 and tailings, wherein the gold concentrate 1 and gold concentrate are used as qualified finished gold concentrate. The beneficiation method herein has the advantages that part of high-grade gold ore are beneficiated early and fast through quick floatation, the circulation quantity of middlingsis reduced, and the gold core can be maximally recycled during floatation; the beneficiation method has good technical flow and high applicability, the influence of backwater upon production indexesis relieved, and gold recovery rate is increased.

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Description

technical field

[0001] The invention belongs to the technical field of mineral processing, in particular to a beneficiation method for improving the production index of carbon-containing gold ore and reducing the influence of production backwater on the production index. Background technique

[0002] The reason why carbon-containing gold ore is a refractory ore is that carbon has a great influence on the flotation process and flotation indicators, and decarbonization by flotation often cannot achieve ideal results. When carbon is removed by flotation, in addition to carbon entering the flotation foam, some gold is also likely to enter the flotation foam together, resulting in gold loss. In addition to the influence of carbon on the indicators in the production practice of carbon-containing gold mines, there are still some other problems, such as: the specific gravity of carbon is relatively light, and it is easy to enter the production backwater, which makes the production b...

Claims

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