Biological-chemical two-stage circulating reactor for pretreatment of refractory gold ore

Abstract

The invention discloses a biological-chemical two-stage circulating reactor for pretreatment of refractory gold ores, which is used for enhancing pretreatment of refractory gold ores by simultaneously using an electrochemical method and a biological leaching method and is used for improving the gold extraction rate of the refractory gold ores. Comprising a double-head air pump, two constant-current peristaltic pumps, an electrochemical reactor, an electrical stimulation bioreactor, two electric heating systems, two external electric fields, two pH and oxidation-reduction potentiometers, two thermometers, a stirrer and a filter. According to the device, biological reaction and chemical reaction in the ore leaching process are carried out separately, strengthening measures are taken for bacterial reproduction and biological leaching through direct current stimulation, the leaching period is shortened, the cost is reduced, microbiological leaching of the chemical reactor is strengthened through the electric field potential, the oxidation rate of refractory gold ore can be remarkably increased, and the leaching efficiency of the refractory gold ore is improved. And the leaching rate of gold is improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a bio-chemical two-stage circulation reactor used for pretreatment of refractory gold ore. Background technique [0002] With the continuous mining of gold mines, high-grade and easy-to-handle gold mines are increasingly exhausted, so we have to turn our attention to low-grade, refractory gold mines. At present, low-grade, refractory gold mines account for 10% of the total gold ore resources in the world. 2 / 3, this will become the main gold resource in the future, and the representative one is sulfide gold ore. [0003] The traditional extraction methods of refractory gold mines have high pollution, high energy consumption, and low leaching rate, which do not meet the current needs for environmental protection and low cost. Therefore, it is necessary to find more efficient, more environmentally friendly and more suitable for gold extraction. A gold extraction method for low-g...

AI Technical Summary

Problems solved by technology

The bioreactors used in bioleaching industry generally have shortcomings such as large shear force and serious bacterial wear. Therefore, bioleaching technology wants to gain a competitive advantage compared with other hydrometallurgical methods in terms of investment and production costs, and it is urgent to solve the process. Engineering problems, developing a bioleaching reactor with gentle stirring conditions and high efficiency, shortening the leaching cycle and reducing production costs

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