Shagang green "stove fire" China's first ultra-thin strip production line reduces energy consumption

Today (March 31), shagang group held China's first ultra-thin belt industrial production conference: through the introduction of nucor ultra-thin belt CASTRIP technology and independent innovation, shagang successfully realized the first ultra-thin belt production line industrial production in China.At the meeting, shagang group and nucor steel company also held the signing ceremony of shagang ultra-thin belt project performance assessment and acceptance, which indicated that the project performance of the ultra-thin belt reached the predetermined target.

According to the introduction, this production line adopts the most advanced double-roll thin strip casting and rolling technology in the world, without continuous casting, heating, hot rolling and other production processes, it directly produces 0.7-1.9mm thin plate and hot coil plate from liquid steel, which is a new technology with short flow, low energy consumption, low investment and green environmental protection."For example, this process is like the dough press we use in our daily life. The difference is that we turn the flour directly into the dough."Shi yixin, general manager of shagang group and executive director of shagang group, said that the length of conventional hot rolling production line is about 800 meters, while the length of ultra-thin strip production line is only about 50 meters.Because the production process of ultra-thin strip is greatly shortened, the production efficiency is higher and the energy saving and environmental protection effect is better. It only takes about 25 seconds to produce thin hot-rolled steel strip from molten steel, and the total energy consumption of production is only 1/5 of the traditional hot-rolling process, and the carbon dioxide emission is reduced by 3/4.Thin belt technology advantage is able to very efficiently production of ultra-thin, high strength steel and special steel, super wide and stable product performance, small batch swings between, between different batches of yield strength and tensile strength of the volatility significantly lower than the traditional strip, close to the level of cold rolling, can meet the needs of the market "cold" as heat generation product quality requirements.Development and environmental science and technology of China steel industry association, deputy director of jiangshang clear thought, double roll thin belt roll casting technology to achieve industrial production, is China's iron and steel iron and steel enterprise production process of technological innovation and a great attempt and successful practice, will certainly to shagang group and the China iron and steel enterprises slim belt product structure innovation, the process of change and a positive demonstration radiation effect of energy conservation and emissions reduction.

From the introduction and construction of 75-ton ultra-high-power electric furnace, known as the "third revolutionary model of China's iron and steel industry", to the construction of the first furnace in Asia;From the relocation of 6.5 million tons of steel plate to a new round of energy-saving technical transformation represented by the world's largest blast furnace;From the high-end cold-rolling production line, to the implementation of special steel converter, double high line, 3500mm plate and other product structure optimization projects, and now the world's leading ultra-thin belt project to achieve industrialization, shagang group one step by step, out of a combination of innovation and independent innovation of the road of development."During the assembly and debugging of the ultra-thin belt production line, shagang has overcome the problem of localization of the side sealing plate, a core component, and realized the continuous casting of 7 furnaces, which has reduced the production cost by 80 yuan/ton and improved the production efficiency.In addition, it also solves technical problems such as excessive roughness, roll mark, plate ribbing and so on. The product types also range from a single brand to a dozen brands of structural steel, high strength steel, weathering steel and high carbon steel.Shi yixin said.

By the end of March 2019, the production line has produced over 200,000 tons of ultra-thin belts, and the production and sales of the products after trimming and trimming have basically achieved a balance.Products involved shelves, automobiles, agricultural machinery, containers, saw blades and other fields.In the next few years, shagang will produce high magnetic steel and high quality silicon steel with low iron loss through ultra-thin strip, mainly used in new energy electric vehicles and other related fields, and provide more energy saving, environmental protection and high efficiency electrical and mechanical products such as motors, compressors and transformers.Shagang group, secretary of the party committee, the board executive, co., LTD., chairman of the board of executive directors, said Shen Bin shagang will also use the successful experience of the first production line, based on the principle of technology sharing, propulsion technology application, find partners across the country, to promote China's ultra-thin technology application, production line construction and product promotion, to push the progress of China's iron and steel metallurgy production technology and innovation.(photo by Yang yi/correspondent sun jingbo)