2021年10月26日

Visit China’s non-blast furnace ironmaking process device “Ou Smelting Furnace”

Urumqi October 14 (Tao Shuanke) “look at the mountains colored, near to listen to the water silent, spring to flowers still in, people to the bird not surprised.” Wu Bin, party secretary and chairman of Xinjiang Bayi Iron & Steel Co., LTD. (HEREINAFTER referred to as “BAigang”) of Baosteel Group, on Monday described the changing environment at his company.

It is sunny in Urumqi in late Autumn in October. In the grassy clearing of Basteelworks district, there stands the “Ou Smelting furnace”, a non-blast furnace ironmaking process device.

Along the furnace body inclined bridge to the third floor rotary platform, “Ou Smelting furnace” overall production line at a glance, it covers an area of about 50 acres. Follow the staff into the central control room, more than 20 computers neatly arranged in a row, the staff is skillfully controlling various equipment. “Now it’s all automated, the workers are using computers to control the blast furnace! “Ou smelting furnace” chief engineer he Minmin said.

According to He Minmin, the “European smelter” was moved from Luojing, Shanghai, on the banks of the Yangtze River, to Xinjiang Badang in 2012. It was put into operation on June 18, 2015. It was originally called COREX furnace in Luojing, and was transformed into the current “European smelter” after badang underwent a lot of technological innovation. Since putting into production, the technical team after more than six years of process optimization, equipment modification, difficult problem, technological now “OuYeLu smelting process is more mature and advanced, economic advantage is particularly prominent, especially in low carbon green and intelligent manufacturing and so on a series of innovative achievements, the cost advantages of less than traditional blast furnace more than 150 yuan. The two breakthrough technologies of stove top gas recycling and carbon dioxide capture and separation can reduce carbon dioxide emissions by 200,000 tons per year, which is equivalent to saving electricity consumption of about 500,000 families nationwide and regenerating forests by about 10,000 mu.

The reporter sees in the remote screen, iron ore and thermal coal in the use of belt conveyor to the respective chute, the operator through the computer precision ratio of raw materials, operation, accounting, weighing, each batch of raw materials through vertical tape machine is put into a container to join reduction shaft furnace and molten gasifier, fluctuation of concatenated two complete ore melting and refining the stove, Finally, the high quality molten iron is delivered to the steelmaking system.

Into the “OuYeLu” production site, red hot inflames the workers face, handheld remote control operators, rotate a few button to realize the control of the large equipment operation, open machine to open the mouth, iron smelting furnace good molten iron from iron mouth after iron ditch into the torpedo tank, each filled with a can of molten iron, workers to operate the remote control can realize mud gun machine plugging hole, The on-site loading of the mortar is done by the robot’s robotic arm methodically loading pieces of mortar into the equipment.

“According to Chinese treasure wu four uniform (manufacturing do operation room are concentrated, the operating posts are robots, operations are remote, and service will be launched) requirements, basic is completed by robot, each link of production line furnace temperature control, sampling test, adding auxiliary materials, controlled by computer, the production line of our employees is less than 20 people.” He minmin said.

Chen Baijun, assistant director of the Eight Iron and Steel Plant, said that since the furnace opened in 2015, the “European smelter” declared more than 600 patents, has obtained 207 authorized patents, including 70 invention patents, in capacity and cost competitiveness has made a huge breakthrough, the implementation of the organic coupling of “European smelter” and traditional blast furnace, It plays an important role in the ecological revolution of integrating iron and steel enterprises into the city, and forms the independent intellectual property right of China Baowu non-blast furnace smelting reduction iron making technology, which has huge economic and social benefits.

Chen Baijun said that the “European smelter” can produce more than 4,000 tons of molten iron every day, nearly 1,000 tons more than before, not only energy saving and cost reduction, but also in technological innovation, smart smelting has achieved advanced results. The average age of the technical team of “European Smelter” is 34 years old. In the past, furnace workers required experience and physical strength, but now it is required to have certain professional knowledge and operation skills. Hearth workers are no longer black, dumb and coarse as they used to be.”

The reporter understands, “OuYeLu smelting reduction ironmaking, steam coal use proportion reached more than 60%, the metallurgical coke consumption less than 1/3 of the traditional blast furnace, break through the traditional blast furnace ironmaking dependence on scarce coking coal resources with high quality, and xinjiang have steam coal resource advantage, therefore” OuYeLu “in xinjiang more cost advantage.

Chen baijun said that the “European smelter” is more adaptable to raw materials than traditional blast furnaces, and can absorb solid and hazardous waste, which has obvious advantages of low carbon and environmental protection. (after)

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