Microbial column type leaching reactor

Abstract

The invention discloses a microbial column type leaching reactor which uses microbes to extract valuable elements in minerals and is designed to be suitable for microbial leaching. The microbial column type leaching reactor adopts immersion leaching and mainly comprises the following components: a cylindrical body which has a conic bottom and is made of acid-proof stainless steel, a stainless steel baffle plate device, a temperature control device, a dissolved oxygen control device, a leaching liquid collecting trough and a jacket heat preservation device, a reservoir, a circulation control device, an integrated controller and a liquid level meter. Through the device, the microbial leaching of a large number of ores can be performed and various valuable elements can be enriched. The improved and innovated characteristics of the leaching reactor are that four special devices, namely the stainless steel baffle plate device, the temperature control device, the dissolved oxygen control device and a filling material, are designed, and the leaching reactor overcomes the defects of the conventional reactors and has the advantages of precise temperature control, high heat and mass transferring effect and dissolved oxygen control effect, short leaching period, controllable parameters and the like.

Description

technical field [0001] The invention relates to a microbial column leaching reactor which uses microorganisms to extract valuable elements in minerals, has the advantages of precise temperature control, good heat and mass transfer effect, good dissolved oxygen control effect, short leaching cycle, and controllable parameters. . Background technique [0002] Mineral resources are essential basic materials and important strategic materials for the development of the national economy, national defense industry and science and technology, and are widely used in important fields such as aviation, aerospace, sophisticated weapons, information, transportation and energy. my country's mineral resources are relatively scarce, and the grade is low and the quality is poor; there are many lean ores and few rich ores. When traditional mining, mineral processing, and metallurgical processes are used to process these mineral resources, the efficiency is low, the process is long, the produ...

AI Technical Summary

Problems solved by technology

However, among the papers on bioleaching published abroad, the papers on reactors are less than 6%, and there are almost no papers on this aspect published in China.

[0004] The stirred tank reactor has long-term use experience, but it has disadvantages such as large power consumption, difficult processing, high investment, troublesome maintenance, and large shear force.

The airlift reactor has the advantages of high mass and heat transfer efficiency, low energy consumption, and low shear force, but it cannot be scaled up

The biggest disadvantage of the above two reactors is that they are only suitable for processing concentrates, and cannot handle low-grade and difficult-to-handle ores, and this is the advantage of column leaching reactors

At present, there are few special research reports on the column leaching reactor. According to the existing literature reports, the column leaching reactor mainly has the following shortcomings: poor heat and mass transfer effect, low leaching efficiency, poor ventilation effect and long leaching cycle. Unable to control various parameters

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