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Ammonium chloride adding device

An ammonium chloride, heating tank technology, applied in coating, metal material coating process, hot dip plating process and other directions, to improve product surface quality, reduce the degree of pollution, reduce the amount of zinc evaporation

Pending Publication Date: 2020-08-11
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing technology is to deal with the existing problems after zinc evaporation, and then how to

Method used

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Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, the ammonium chloride is stored in the solid ammonium chloride storage tank 1, and the ammonium chloride is delivered to the heating tank 7 through the solid delivery pipe as required. The heating tank is maintained at 538° C. by a heater, and the ammonium chloride is vaporized. The gasified ammonium chloride is transported through the gasification gas delivery pipe 6, and nitrogen gas is delivered to the gasification gas delivery pipe 6 through the protective gas delivery pipeline 3, and the concentration and amount of the ammonium chloride to be transported can be adjusted by adjusting the amount of nitrogen gas . After the ammonium chloride gas and nitrogen gas are mixed, the gasification gas delivery pipe 6 sends the mixed gas to the distribution beam 2 in the zinc liquid closed cavity. There are multiple gas outlets 4 on the distribution beam 2, and the mixed gas reaches the surface of the zinc liquid from the gas outlets 4. The ammoni...

Embodiment 2

[0036] Such as figure 2As shown, the ammonium chloride is stored in the solid ammonium chloride storage tank 1, and the ammonium chloride is transported to the heating tank 2 through the solid delivery pipe as required. The heating tank is maintained at 450°C by a heater, and the ammonium chloride is sublimated and vaporized. The gasified ammonium chloride is transported through the gasification gas delivery pipe 6, and nitrogen gas is delivered to the collecting pipe of the gasification gas delivery pipe 6 through the protective gas delivery pipeline 3 at the same time, and the amount of nitrogen gas can be adjusted to adjust the concentration of the transported ammonium chloride. concentration and volume. After the ammonium chloride gas and nitrogen gas are mixed, the gasification gas delivery pipe 6 sends the mixed gas into the closed chamber of the zinc liquid, and delivers it to the two ends of the distribution beam 2 through the shunt pipe. There are multiple gas outl...

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PUM

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Abstract

The invention discloses an ammonium chloride adding device. The ammonium chloride adding device comprises a solid ammonium chloride storage tank, a distributing beam and a heating and conveying mechanism for heating and gasifying ammonium chloride conveyed by the solid ammonium chloride storage tank and guiding ammonium chloride to the distributing beam by means of negative pressure drainage of aprotecting gas conveying pipeline, wherein the distributing beam is arranged in a closed cavity of a zinc liquid, and the distributing beam is provided with an air outlet nozzle pointed to the liquidlevel of the zinc liquid. By adopting the device, ammonium chloride gas is sprayed to the surface of the zinc liquid when a steel strip of a continuous hot galvanizing production line enters the closed cavity of the zinc liquid to form a nitrogen and aluminum compound with aluminum in the zinc liquid. The compound floats on the surface of the zinc liquid, so that the surface of the zinc liquid isisolated, and zinc is hardly evaporated.

Description

technical field [0001] The invention belongs to the technical field of hot-dip galvanizing auxiliary equipment, and in particular relates to an ammonium chloride adding device. Background technique [0002] Cold-rolled steel sheets sometimes require surface treatment before use. Surface galvanizing is a commonly used method, and galvanizing is divided into electric galvanizing and hot-dip galvanizing. In particular, the production volume of continuous hot-dip galvanizing is increasing, mainly because the annealing and surface treatment of the steel plate after cold rolling to the required thickness are completed in one production line. [0003] The continuous hot-dip galvanizing production line for cold-rolled sheets used to mainly produce carbon non-alloy low-strength cold-rolled steel coils. After annealing, the cold-rolled steel coil has a slight surface oxidation, the oxide is easily reduced, and can be directly hot-dip galvanized. Under this condition, the hydrogen c...

Claims

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Application Information

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IPC IPC(8): C23C2/06C23C2/30
CPCC23C2/06C23C2/30
Inventor 王茹玉裴英豪朱涛沈新玉崔磊张四方章一樊刘伟
Owner MAANSHAN IRON & STEEL CO LTD