Optimize "rations" to help "Efficient smelting"/10.10

The ironworks continues to deepen lean management

Through optimizing the production process, strengthening the quality control, strict source management and other measures

Stabilize raw fuel indicators such as sinter, pellet and coke

Provides high quality "grain and grass" for stable and high yield of blast furnace

Reduced production costs

Since this year

The cost of pellet blending has been greatly reduced

Make the best level in history

Meet the material requirements of two blast furnaces

Optimization of production process, innovation and improvement have achieved remarkable results

The plant carried out in-depth sintering machine equipment elimination and technical transformation, and took advantage of the sintering system repair opportunity to upgrade the equipment of the ring cooling machine fabric facilities, batching silo liner, sintering machine wheel, sintering finished product screen and other systems, laying a foundation for improving the equipment operation rate.
In order to better understand the performance of iron ore powder and obtain the best ratio, technicians have carried out sintering cup test research for many times to explore and determine a reasonable ratio and guide the on-site sintering ore allocation. By controlling the backward position of the sintering end point, strengthening the stability of the sintering temperature field, controlling key parameters, etc., combined with equipment transformation, air leakage control and other measures, the waste heat generation of sinter tonnage ore in April 21.99 KW·h/t, the best level in history.

Refine quality control and strictly control key points of quality

The plant actively carried out key projects to optimize the production of pellet blending structure, increased the proportion of hematite in the blending structure, tried discount ore, and cooperated with Lu Nan Xinyuan to adopt the magnetic red mixed fine powder processing mode, effectively improving raw material grade, reducing energy consumption, and saving ore blending cost.
Organize the technical backbone to study the experience of advanced units and seek the experience of technical demonstration and production support. By strengthening the mixing and strictly implementing the "five good" operation policy, the ball forming rate reached more than 90%. Roasting system adjusts thermal system according to different raw material structure, makes production records, and summarizes and analyzes monthly.

The pass rate of key quality indexes such as compressive strength and FeO of finished pellets has reached 100% since the optimization of ore blending structure, and the cost of pellet blending has been greatly reduced, creating the best level in history.

Strengthen source control, let blast furnaces eat "high-quality grain"

Strengthen source control and let blast furnaces eat "high-quality grain". "By establishing the 'five good six stable' operation policy, the stability of the mixture has been effectively improved, and the standard deviation of sinter SiO₂ is 0.17, which is much better than the level of last year." Recently, said Xu Guicheng, director of the raw material operation area who supervised the process in the raw material farm. The factory follows the principle of "coming in, putting down, supplying well" and being responsible for the next process, tracking and investigating the performance of the main raw materials from the source, grasping the process control, and strictly controlling the quality of the materials entering the factory.
In the raw material operation area, the cargo location was optimized, the mineral materials were entered according to the principle of "small batch, multi-batch", and the production was reasonably organized to meet the mineral needs of eight users. The three processes of raw materials, sintering and blast furnace form a quality research team, establish an information communication platform, and control the dynamics of each process by "calling before and responding after" to achieve efficient and stable production conditions of the ironmaking system.