System for recovering cold-rolled acid regeneration acid-containing mud slurry, and method for recovering cold-rolled acid

Abstract

The invention provides a system for recovering cold-rolled acid regeneration acid-containing mud slurry, and a method for recovering a cold-rolled acid. In the system, acid-containing mud slurry in aneffluent is observed through an observation opening in the side surface of a desilicication liquid storage tank; a dirt discharge port is formed in the bottom of a side wall, and is communicated witha sedimentation pool through a pipeline, and the pipeline is provided with a pneumatic pump; the bottom of the sedimentation pool is communicated with a plate-and-frame filter press through a pipeline, and a sludge pump is arranged on the pipeline; plural layers of mud baffles are arranged at the top of the sedimentation pool, and the lengths of the mud baffles are sequentially decreased from inside to outside; and the plate-and-frame filter press separates precipitates into a cold-rolled acid and mud cake, and the mud cake is recovered. According to the system, the observation opening is additionally formed to confirm the liquid outlet condition of the desilicication liquid storage tank; by additionally arranging the dirt discharge port and the pneumatic pump, the acid-containing mud slurry circularly flows between the sedimentation pool and the desilicication liquid storage tank; the lengths of the mud baffles in the sedimentation pool are improved, so that the sludge can be effectively prevented from entering the desilicication liquid storage tank; and the acid-containing mud slurry is digested and removed by utilizing an original acid regeneration technology.

Description

technical field [0001] The invention belongs to the technical field of recovery and treatment of acid-containing mud, and in particular relates to a system for recovering cold-rolled acid to regenerate acid-containing mud and a method for recovering cold-rolled acid. Background technique [0002] With the development of my country's industry and the continuous growth of the economy, various industrial wastes continue to increase. The accumulation of a large number of industrial wastes will cause great safety hazards and environmental pollution. The loss of hazardous chemicals may cause pollution to water, atmosphere, air and soil, etc. Therefore, comprehensive utilization of waste is an urgent matter. In recent years, with the awakening of people's awareness of environmental protection and the enhancement of awareness of conservation and recycling, as well as the country's emphasis on environmental protection, the utilization of industrial waste in my country has achieved gre...

AI Technical Summary

Problems solved by technology

[0003] Existing cold-rolled acid regeneration systems (such as figure 1 (shown) mainly regenerates the waste acid produced by the cold rolling line and then recycles it. After the waste acid is recovered, silicon removal treatment is carried out. The silicon removal process needs to be filtered through a machine frame filter press to separate the silicon mud from the acid solution. During this process, a small amount of mud will be taken out by the acid liquid, and finally deposited in the desiliconization tank. When it is deposited in a certain position, it needs to be cleaned up, so the dangerous chemical acid-containing mud is produced.

In addition, the cleaning of such mud needs to be carried out by a qualified professional organization through a special vehicle, and then transported outside the cold rolling plant to an institution that can handle acid-containing mud for recycling. This process not only has environmental and safety risks, but also is costly

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