Nickel matte high-pressure leaching gas recovery device

Abstract

The invention relates to the field of mineral product processing, in particular to a nickel matte high-pressure leaching gas recovery device, which comprises a gas inlet pipe, a gas outlet pipe and a tank body. The top of the tank body is fixedly connected with an air inlet pipe; the top of the tank body is fixedly connected with an air outlet pipe; a guide block is fixedly connected to the position, close to the air inlet pipe, in the tank body; a curved channel is formed in the guide block; first spray heads which are uniformly arranged are fixedly connected to the interior of the curved channel; the interior of the tank body is fixedly connected with a mounting block; an adsorption block is arranged in the mounting block; activated carbon is arranged in the adsorption block. According to the invention, secondary treatment on the gas containing sulfur dioxide is effectively realized; by introducing the gas subjected to wet treatment into activated carbon, residual sulfur dioxide can be fully absorbed and treated, and the emission of sulfur dioxide is greatly reduced. Meanwhile, the activated carbon is washed by the absorption solvent, so that sulfur dioxide adsorbed in the activated carbon is led out, and the activated carbon is conveniently recycled.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a high-pressure nickel matte leaching gas recovery device. Background technique [0002] In the process of copper matte converting and nickel matte converting, matte nickel is generally obtained at the converting temperature, and part of the sulfur will be oxidized to sulfur dioxide. Nickel, such crude nickel is purified by electrolytic refining or high-pressure ammonia leaching to purify metallic nickel. [0003] According to CN101041120A sulfur dioxide recovery split method sulfur recovery device and system device recovery sulfur method, with simple structure, low cost, no tail gas treatment, simplified reaction process, reduced investment, reduced volume, less catalyst consumption, no high temperature thermal reaction section, The raw material-free acid gas scrubbing pretreatment process does not need to add a hydrolysis catalyst, and can handle H2S-poor acid gas. The probl...

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Problems solved by technology

[0004] However, in the prior art, due to the simultaneous production of sulfur dioxide during the production process, sulfur dioxide is a toxic gas that is directly discharged into the atmosphere, which will cause serious air pollution. Therefore, it is necessary to purify the exhaust gas containing sulfur dioxide, and Recover the sulfur dioxide obtained from the purification. The existing treatment methods for sulfur dioxide mainly include solution wet absorption and activated carbon dry recovery, but the above-mentioned treatments are all single treatment. The air is fully exposed to the reaction, but there will still be some sulfur dioxide that is not fully absorbed, and the dry recovery method, the adsorption capacity of activated carbon is limited, and it is easy to reach the adsorption limit after working for a long time

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