Process method for decreasing water content of chromic hydroxide

Abstract

The invention relates to the technical field of production of chromic hydroxide, and discloses a process method for decreasing water content of chromic hydroxide. The method comprises the following steps: 1) preparing; 2) primarily improving; 3) upgrading equipment; and 4) improving discharging. According to the method, an original wasted and old slag cooling machine is reconstructed, so that theproduction cost is saved, and the construction time is reduced; and meanwhile, the area occupied by equipment is reduced; professionals make survey of a field and arrange corresponding equipment basedon the field condition, so that the equipment mounting reasonability is conveniently ensured; the problems of disordered equipment mounting and potential risk can be prevented; a discharging port ofthe wasted and cold slag cooling machine is improved and facilitates the feeding of materials, and thus the feeding capacity is high; the discharging port is prevented from being excessively small tocause material blockage; and a propelling device in the slag cooling machine is improved and facilitates the propelling of cement type materials.

Description

technical field [0001] The invention relates to the technical field of chromium hydroxide production, in particular to a process method for reducing the moisture content of chromium hydroxide. Background technique [0002] Chromium hydroxide, amphoteric hydroxide, is a gray-green powder, insoluble in water, easily soluble in acid to form trivalent chromium ions, soluble in strong alkali to form a bright green solution, begins to decompose at 400°C, and completely decomposes into chromium oxide green at 500°C , for the preparation of trivalent chromium salts and dichromium trioxide, chemical reagents, and also for paint pigments and wool treatment, etc., for the preparation of chromium pigments and chromium salts, etc., for the manufacture of chromium salts and pigments, the current domestic vanadium market The price continues to rise, and the price has reached the highest level in the past ten years. The company maximizes production and increases vanadium production, so as t...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a process method for reducing the moisture content of chromium hydroxide, which has the advantages of reducing the moisture content of chromium hydroxide, etc., and solves the difficulty in equipment selection, which is prone to moisture baking Problems such as failure to meet the requirements and easy bonding of chromium hydroxide wet base seriously affect the normal production and processing, and the investment cost of the cement-like material drying equipment system is relatively large, generally about 4 million yuan, and the equipment covers a large area, and the construction The problem of long construction period