Neutralizing treatment device for pickling wastewater of hot-rolled nickel-based alloy stainless steel medium plate

Abstract

The invention provides a neutralizing treatment device for pickling wastewater of a hot-rolled nickel-based alloy stainless steel medium plate. The neutralizing treatment device comprises a purification tank, a cleaning plate, a reciprocating lead screw, a sliding plate and air inlet pipes; two groups of U-shaped support frames are symmetrically arranged on the upper end surface of the purification tank, and two groups of transverse rails are arranged between the U-shaped support frames; a threaded rod is arranged at the upper end of the cleaning plate, and a brush is arranged at the lower end of the cleaning plate; the sliding plate is clamped in sliding grooves in the transverse rails in a sliding mode, and a fixed block is arranged at the upper end of the sliding plate; two groups of feeding bins are symmetrically arranged on the upper end surface of the sliding plate; and the air inlet pipes are fixedly connected with air conveying pipes, and the two air conveying pipes are arranged in a vertically symmetrical mode. According to the device, the reciprocating lead screw is in threaded connection with the fixed block, so that in the process that a driving motor drives the reciprocating lead screw to rotate, the sliding plate can move back and forth in a sliding groove in the transverse rails, lime in the feeding bins can be uniformly scattered into the purification tank, and the neutralizing effect of the lime on acidic substances in the purification tank is improved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment equipment, and more specifically relates to a pickling wastewater neutralization treatment device for hot-rolled nickel-based alloy stainless steel medium and thick plates. Background technique [0002] Stainless steel will have black and yellow oxide scales during processing. In order to improve the appearance and corrosion resistance of stainless steel, the processed stainless steel must be pickled and passivated to remove the oxide scales produced after welding and high-temperature processing. The silver is bright and shiny, and an oxide film with chromium as the main substance is formed on the treated surface, which will not cause secondary oxygen corrosion and achieve the purpose of passivation, thereby improving the surface anti-corrosion quality of stainless steel products and prolonging the service life of equipment , the waste liquid after pickling contains acidic substances,...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention provides a pickling wastewater neutralization treatment device for hot-rolled nickel-based alloy stainless steel plate, to solve the problem that the existing wastewater treatment equipment lacks measuring tools and cannot accurately calculate the amount of lime input, which will cause Wastewater treatment is not complete or too much lime input causes waste, and lime will sink to the bottom after being put into the purification tank, resulting in insufficient contact between lime and acidic substances in wastewater, resulting in low neutralization reaction efficiency

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