Biological column leaching device

Abstract

The invention relates to a biological column leaching device which is used for leaching metal in ore, belonging to mechanical equipment for biological metallurgy. The lower part of an outer clamping sleeve of the biological column leaching device is provided with a support seat, and the bottom is provided with an air inlet port, a feeding port and a sampling port; a base plate is fixedly installed on the support seat, the base plate is provided with a vent hole, a cylindrical vent pipe is arranged on the vent hole, the top of the cylindrical vent pipe is sealed, and the wall of the pipe is provided with small holes; a base plate of an inner barrel is provided with a through hole, the inner barrel is arranged in the outer clamping sleeve, and the cylindrical vent pipe is arranged in the inner barrel through the through hole; and the top of the inner barrel is provided with an end cover, the top of the end cover is provided with an opening, and the inner barrel and the end cover are fixedly connected through bolts. In the biological column leaching device, the ventilation capacity in a liquid is increased through the cylindrical vent pipe, so that breathed air can be better distributed in ore pulp, the growth and metabolism ability of microorganisms are improved, and the utilization rate of ore pulp is increased. The biological column leaching device has the advantages of simplestructure, uniform solid and liquid mixing, sufficient solution of breathed air, difficult caking of ore pulp and the like.

Description

technical field [0001] The invention relates to a biological column leaching device, which is used for leaching metals in ores, and belongs to biometallurgical mechanical equipment. Background technique [0002] The salient features of my country's mineral resources are low-grade, complex, refractory, and mostly small and medium-sized mines. It is difficult to extract economically, greenly and effectively by traditional dressing and smelting processes. "National Medium- and Long-Term Science and Technology Development Planning Strategy Research" pointed out that "my country's mineral resources are in short supply and the situation is serious." To solve the problem of shortage of mineral resources in our country, it is necessary to develop new technologies for efficient utilization of resources. [0003] Domestic and foreign research and production practices have shown that compared with traditional metallurgical processes, biometallurgy technology has shown strong advantage...

AI Technical Summary

Problems solved by technology

[0004] The application of this developing technology is still immature, and there are many deficiencies: First, the oxidation ability of single bacteria used in biometallurgy has not been significantly improved, and it is necessary to improve the overall bacterial biomass from the perspectives of increasing bacterial biomass and optimizing bacterial growth conditions. Oxidation capacity; Second, the bioreactors used in high-grade ore bioleaching industry generally have large shear force, serious damage to cells, and low pulp concentration resulting in low equipment processing capacity, etc.

But in the ore leaching process, when the ventilation is too large, the shear force produced by the ventilation has a great influence on the growth and metabolism of the leaching bacteria; and a microbial column leaching reactor such as Zhou Hongbo (Patent No.: 200910310522.0) Focusing on the control and circulation of the reaction conditions in the reaction process increases the production cost of ore leaching; and a microbial leaching device such as Huo Qiang (Patent No.: 200720169742.2) focuses on the circulation of the leaching solution in the reactor , the requirements and utilization of ventilation are not high

Images