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Automatic control method for cool-constant-temperature ore discharging of sinter ore furnace

A technology for sintering and ore furnaces, applied to furnace control devices, furnaces, furnace components, etc., can solve problems such as high or low ore temperature, increase the amount of finished ore, reduce the amount of returned ore, and achieve safe and economical operation Effect

Active Publication Date: 2013-08-07
CITIC HEAVY INDUSTRIES CO LTD +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the deficiencies of the above-mentioned technical problems, to provide a kind of automatic control method for the ore discharge of the sintering furnace cold constant temperature, in the present invention, the ventilation rate of the blower fan, the feed-forward adjustment of the mine temperature through the air outlet air temperature Wind temperature, so as to control the ore discharge temperature, waste heat air temperature, and waste heat air volume within a certain range, ensure the normal operation of the waste heat utilization system, and ensure normal ore discharge. Using this control method, it is possible to prevent excessive ore discharge temperature in advance. High or too low, to achieve stable operation and improve the quality of sinter

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Embodiment Construction

[0019] As shown in the figure, the specific implementation method is as follows:

[0020] An automatic control method for cold-fixed temperature discharge of sinter furnaces, including the steps of crushing and screening of sinter discharged from a sintering machine through a crushing device, and passing through a sinter conveying device through a cooling furnace 3 feeding port 4 Enter the cooling step in the cooling furnace 3, and then discharge the ore material from the discharge port 2 to the cooling furnace 3 through the discharge device, and discharge as the sinter is cooled, through the temperature detection device installed at the discharge port of the cooling furnace 3 1 Detect the ore discharge temperature, and compare the temperature with the set temperature value. The set temperature value can be adjusted and set according to the size of the cooling furnace 3 and the amount of ore discharge. Generally, the set temperature is 100°C. The ore discharge temperature is h...

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Abstract

An automatic control method for the cool-constant-temperature ore discharging of a sinter ore furnace comprises the steps of crushing sinter ore discharged from a sintering machine through a crushing device, screening the crushed sinter ore through a screening device, transporting the sinter ore into a cooling furnace through a sinter ore transportation device for cooling, and discharging the sinter ore outside the cooling furnace through a discharging device. When the sinter ore is cooled and discharged, a temperature detection device detects ore discharging temperature, and by adjusting the air quantity of an induced draft fan and a blowing fan, the ore discharging temperature is adjusted and stabilized at 90-200 DEG C. According to the automatic control method for the cool-constant-temperature ore discharging of the sinter ore furnace, the ventilation quantities and the air temperature of the fans can be adjusted according to the feedforward of the air temperature and the ore temperature of an air outlet, so that the ore discharging temperature, the waste heat air temperature and the waste heat air quantity can be controlled within certain ranges, the waste heat utilization system can be guaranteed to operate normally, and the normal ore discharging can be guaranteed; and overhigh or overlow ore discharging temperature can be prevented, the stable operation can be achieved, and the sinter ore quality can be enhanced.

Description

technical field [0001] The invention relates to the technical field of waste heat utilization, in particular to an automatic control method for cold-fixed-temperature discharge of ore in a sinter furnace. Background technique [0002] The iron and steel industry is an important basic industry of the national economy, and its energy consumption accounts for about 15% of the total industrial energy consumption in the country. It is a key industry for energy conservation and emission reduction. In the process of iron and steel production, the energy consumption of the sintering process is relatively high, generally 10-15% of the total energy consumption of iron and steel enterprises. At present, the sinter is cooled by using the air medium through the belt cooler or the ring cooler. During the cooling process of the sinter, the heat energy becomes the sensible heat of the waste gas, and the temperature of the waste gas is between 100-400°C. In the total energy consumption of t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D19/00
Inventor 彭岩张晓玲仝伟峰乔文存张晗王新建时小宝范东燕
Owner CITIC HEAVY INDUSTRIES CO LTD
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