Molten iron scheduling method and system based on steelmaking molten iron quality requirement

Abstract

The invention discloses a molten iron scheduling method and system based on steelmaking molten iron quality requirements, and relates to the technical field of molten iron transportation. A steelmaking execution system formulates a molten iron demand plan including molten iron quality grade requirements, and the ironmaking execution system combines current inspection and test data of each blast furnace to generate current tapping actual performance; and the molten iron management and control platform obtains the current molten iron grade of each blast furnace according to the current tapping actual performance and the molten iron grade rule, selects the standard blast furnace number meeting the molten iron quality grade requirement according to the matching of the molten iron quality grade requirement and the current molten iron grade, and executes the transportation operation of the molten iron tank according to the standard blast furnace number and the molten iron transportation system. The molten iron transported to a steelmaking department meets the steelmaking requirement through the quality requirement of the molten iron, the transportation and molten iron treatment cost is reduced, refined and lean management of molten iron transportation operation is achieved, the hit rate of the molten iron and a steelmaking plan is increased, temperature drop is reduced, and the matching rate of the molten iron needed for steelmaking is increased.

Description

technical field [0001] The present application relates to the technical field of molten iron transportation, in particular to a method and system for dispatching molten iron based on the quality requirements of iron and steelmaking water. Background technique [0002] With the increasing demand for steel, the output of steel has also increased rapidly. As the core link of the entire steel production, the iron and steel transportation of iron and steel enterprises is the focus of the management of iron and steel enterprises. Hot metal transportation means that after the hot metal transport vehicle loads the empty ladle to receive the molten iron under the blast furnace, the molten iron is transported to the cast iron workshop for cast iron or to the steelmaking workshop for tempering, which involves three departments of ironmaking, transportation and steelmaking. Affected by the production environment, production conditions and market demand, different blast furnaces need to ...

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Problems solved by technology

[0004] However, due to the different types of steelmaking, the quality requirements for molten iron are also different. For example, GCr15A steel requires that the content of sulfur (S) element in the corresponding molten iron be less than 0.030%, otherwise the content of S element is too high, which will cause steel. Hot brittleness reduces the weldability of steel; for example, SKF3L steel requires that the phosphorus (P) element content of the corresponding molten iron be less than 0.130%, otherwise the P element content is too high, which will cause the steel to be used at room temperature or lower temperature brittle

In the above-mentioned iron-steel interface information-based hot metal scheduling method, when the manufacturing execution system (MES) issues a tapping plan, it mainly conducts hot metal scheduling based on the demand for hot metal, while ignoring the quality requirements of the hot metal, which often results in the delivery of hot metal to the steelmaking department. Failure to meet steelmaking requirements, thereby increasing transportation and hot metal treatment costs

The inability to accurately grasp the quality information of hot metal tanks and steelmaking requirements has resulted in the failure of hot metal scheduling, which has become a bottleneck factor restricting steel companies from carrying out information management and lean production process innovation

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