Hot-rolled stainless steel casthouse chlorate solution spraying device
A technology of spraying device and chlorinated salt, which is applied to the device for coating liquid on the surface, coating, metal rolling, etc., can solve the problems of large acid consumption, high production cost, environmental pollution, etc. consumption, reducing acid consumption, reducing energy consumption
Inactive Publication Date: 2012-11-07
WISDRI ENG & RES INC LTD
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Problems solved by technology
[0002] The hot-rolled stainless steel annealing and pickling line is a key process in the cold-rolled stainless steel production process. Before the current hot-rolled stainless steel strip annealing and pickling process enters the phosphorus breaking section, the strip steel must enter the annealing furnace for annealing. The purpose of annealing is mainly It is to recrystallize and soften the strip steel and dissolve carbides, but after annealing, a dense oxide layer will be formed on the surface of the strip steel, which is difficult to remove. The strip steel needs to be mechanically broken (phosphorus breaker and throwing machine) Pill machine) and chemical pickling can be completely removed. The current production process has high energy consumption, large acid consumption, and high production costs. Moreover, the nitrogen compounds in the exhaust gas discharged from the mixed acid pickling section are harmful to the environment. Pollution is also serious
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[0013] figure 1 It is a chloride salt solution spraying device in front of a hot-rolled stainless steel furnace, mainly including a chloride salt solution spray tank 13, a spray tank cover 5, a chloride salt solution nozzle 10, a strip support roll 4, a strip support roll 11, and a rotating roll 6 , liquid level gauge 3, circulation pump 1. The spraying device is installed in front of the annealing furnace, and the chloride salt solution spraying tank is connected with a spraying tank cover 5, and the spraying tank cover 5 is provided with a lifting device 8 for lifting it. Two back-up rolls 4, 11 are installed in the inlet position and the exit position of the chloride salt solution spray tank 11, and the back-up rolls 4 and 11 are mainly used for supporting the strip steel 12, and the strip steel 12 is kept horizontal. The chloride salt solution nozzle 10 is distributed on the upper and lower sides of the strip steel 12, mainly the chloride salt solution is sprayed onto the...
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The invention discloses a hot-rolled stainless steel casthouse chlorate solution spraying device. The device comprises a chlorate solution spraying tank; an inlet and an outlet in the chlorate solution spraying tank are provided with two bearing rollers for supporting a strip steel; the upper side and the lower side of the strip steel are provided with a plurality of nozzles; the chlorate solution spraying tank is provided with rotary rollers arranged in pairs on the upper and lower sides of the strip steel; and the rotary rollers and the strip steel keep a certain gap. The hot-rolled stainless steel casthouse chlorate solution spraying device provided by the invention not only can reduce the energy consumption of an annealing and pickling line of the hot-rolled stainless steel to save the production cost, but also can greatly reduce the acid consumption, thereby reducing environmental pollution caused by emission of exhaust smoke mixed with acid.
Description
technical field [0001] The invention belongs to the field of annealing and pickling of hot-rolled stainless steel, and relates to a chloride salt spraying device in front of a hot-rolled stainless steel furnace. Background technique [0002] The hot-rolled stainless steel annealing and pickling line is a key process in the cold-rolled stainless steel production process. Before the current hot-rolled stainless steel strip annealing and pickling process enters the phosphorus breaking section, the strip steel must enter the annealing furnace for annealing. The purpose of annealing is mainly It is to recrystallize and soften the strip steel and dissolve carbides, but after annealing, a dense oxide layer will be formed on the surface of the strip steel, which is difficult to remove. The strip steel needs to be mechanically broken (phosphorus breaker and throwing machine) Pill machine) and chemical pickling can be completely removed. The current production process has high energy ...
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IPC IPC(8): B05C5/00B21B45/04
Inventor 李勇华贺立红胡斯尧
Owner WISDRI ENG & RES INC LTD