China Drying Network Recently, at the 15th China Patent Awards Conference, Shougang's “fixed air temperature control system for hot blast stoves” won the China Patent Excellence Award.

The State Intellectual Property Office has established the “China Patent Award” since 1989. It is the only national government department award for awarding patented inventions and creations, and has been recognized by the United Nations World Intellectual Property Organization (WIPO), internationally. Have a certain influence. Shougang’s “Blast Furnace Fixed Air Temperature Control System” won the Patent Excellence Award on the basis of a high-temperature air hot blast stove system to achieve stable control of the blast temperature of the hot blast stove and ensure stable operation of blast furnace high blast temperature to achieve reduction of blast furnace coke The target of consumption and pollutant discharge is of great significance to the development of a recycling economy, low-carbon metallurgy, energy-saving emission reduction, and sustainable development of the current iron and steel industry in China.

For a long time, the overall level of blast furnace temperature in our country is low, and there is a gap of 100-150°C compared with the blast temperature of advanced blast furnaces abroad. The main reason is that in obtaining high-temperature hot air, the calorific value of the gas used is relatively low; the hot-air duct appears Steel shells are burning red, leaking, and even cracking; with high air temperature, the blast furnace is difficult to accept. For high calorific value gas, high wind temperature, high temperature hot air conveying safety, and high blast temperature for blast furnaces, Shougang is relying on Qiang Steel's No. 2 blast furnace and No. 3 blast furnace, focusing on the high blast temperature of hot blast stoves and the high winds of hot blast ducts. The mild blast furnace high air temperature operates three key technologies, and through the application of more than 10 key patented technologies developed independently by the high temperature, the stable production of blast furnace 1280 °C air temperature was successfully achieved.

It is understood that Qianggang blast furnace to achieve a stable high air temperature of 1280 °C, Japan, South Korea, Germany and other foreign advanced blast furnace temperature is 20 ~ 50 °C, higher than the average domestic company blast furnace temperature higher than 100 °C. The application of this technology can not only reduce the consumption of coke and achieve energy conservation and emission reduction, but also the high wind temperature indicators have reached the international advanced level.

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