Chromium slag soaking and reducing detoxication method

Abstract

The chromium slag soaking and reducing detoxicating process is to soak chromium slag in reductant solution so that the six-valent chronium as the toxic matter in chromium slag is separated from chronium slag and reduced into three valent chronium in the solution for detoxication. The process is scientific, simple, practical, fast in detoxication speed and low in cost. The present invention makes it possible to process chronium slag in large scale or oil environmental pollution.

Description

Technical field [0001] The invention relates to the technical field of detoxification of chromium slag, and mainly relates to a chromium slag soaking reduction detoxification method. Background technique [0002] Chromium salt products are indispensable and important chemical products in the national economy. Because the waste dregs produced in the production process are leaching and toxic, their storage in the environment will seriously pollute the environment, which is also an important factor restricting the production and development of enterprises. If the hexavalent chromium in the chromium slag cannot be effectively removed, the natural environment on which human beings depend will be endangered. At present, the methods adopted for the treatment of chromium slag mainly include: slag stacking method, roasting reduction method, chrome slag ironmaking and coal blending power generation, etc. Among the above methods, the slag field stacking method can not fundamentally sol...

AI Technical Summary

Problems solved by technology

If the hexavalent chromium in the chromium slag cannot be effectively removed, it will endanger the natural environment on which human beings depend.

At present, the methods adopted for the treatment of chromium slag mainly include: slag stacking method, roasting reduction method, chrome slag ironmaking and coal blending power generation, etc. Among the above methods, the slag field stacking method can not fundamentally solve the toxicity problem of chromium slag, It also brings a lot of inconvenience to later storage, anti-leakage, etc.

Although the roasting reduction method can fundamentally solve the toxicity problem of chrome slag, its expensive treatment cost makes it difficult for enterprises to accept, and there is still the problem of slag toxicity scattering in the transportation process of chrome slag ironmaking and coal blending power generation. In a word, the above method Unsatisfactory and difficult to achieve widespread adoption