Pickling equipment and method for metal material

Abstract

The invention discloses pickling equipment and method for a metal material. The pickling equipment comprises a first acid tank, a second acid tank, a third acid tank, a rinsing tank and a waste acid tank with a track frame, and an acid stock solution is placed in the first acid tank. Through the arrangement of the first acid tank, the second acid tank and the third acid tank, after a steel wire coil is treated in the first acid tank, the acidity is reduced, and the steel wire coil is continuously treated after an acid stock solution enters the second acid tank through the connecting pipe; after the acidity is reduced again, the steel wire coil enters the third acid tank through the connecting pipe to be continuously treated, the acid liquor treats the steel wire coil for multiple times, the treatment effect on the steel wire coil is effectively enhanced, meanwhile, the steel wire coil is sequentially soaked in the acid liquor, the acid liquor is effectively and fully utilized, waste of the acid liquor is effectively reduced, and the production cost is reduced. The utilization rate of the acid liquor is improved and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of pickling of metal materials, in particular to a pickling equipment and method for metal materials. Background technique [0002] The pickling speed of metal materials is directly proportional to the concentration of reactants and inversely proportional to the concentration of products. The general law of pickling metals is that the higher the concentration of hydrochloric acid or dilute sulfuric acid, the faster the pickling speed (excluding concentrated Sulfuric acid), as the amount of cleaning metal materials increases, the concentration of hydrochloric acid or dilute sulfuric acid will gradually decrease. When the concentration of hydrochloric acid or dilute sulfuric acid cannot meet the requirements of cleaning speed and cleaning effect, hydrochloric acid or dilute sulfuric acid needs to be scrapped. In the National Hazardous Waste List, the waste acid after metal pickling is hazardous waste and needs...

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of pickling equipment and method for metal materials, to solve the pickling equipment for metal materials in the technology, when metal materials such as steel coils are pickled, often there is acid solution after use, The concentration of waste acid is high, not only the cleaning effect is not good, but also the waste of acid solution is caused

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