In the increasingly fierce competition in the steel industry, reducing cost and increasing efficiency has become the key to the development of enterprises. Jilin Xinda Iron and Steel Co., Ltd. actively responds to the group's call for extreme cost reduction, and the cost reduction work in each process is being carried out in an orderly manner, actively seeking efficiency from management, tapping potential energy from equipment, adhering to system planning, pursuing extreme energy efficiency, and continuously tackling key problems for improvement.

The sinter workshop of the raw material plant of Jilin Xinda Iron and Steel Co., Ltd. actively responds to the company's development strategy, focuses on improving the qualification rate of sinter alkalinity, and fully explores the potential of cost reduction to win advantages for enterprises in market competition.

For a long time, the qualified rate of sinter alkalinity is of great significance to iron and steel production. The high qualification rate of alkalinity not only means that the quality of sinter is stable, but also can effectively improve the smelting efficiency of blast furnace, improve the quality of pig iron, and enhance the market competitiveness of products. It can also reduce production costs and improve the economic efficiency of enterprises. Previously, the alkali qualification rate of Jilin Xinda raw material Factory was not ideal, and there was a gap with the advanced level of the industry, which restricted the quality of products and the improvement of enterprise benefits.

In order to reverse this situation, the raw material factory acted quickly and set up a quality improvement team. The members of the group cover professionals from different positions such as section chief to foreman. They have a clear division of labor and each performs its own duties, providing a solid personnel guarantee for improving the alkalinity pass rate. After fully understanding the current situation, the team formulated a detailed activity plan, from the current situation investigation, goal setting to cause analysis, formulation and implementation of measures, each link was carefully arranged to ensure the orderly progress of the work.

Through data comparison and field analysis, it is found that the main reasons of low alkalinity pass rate are unstable material cutting, large material moisture and uneven mixing. In response to these two key issues, the group has formulated a series of precise and effective targeted measures. In order to solve the problem of large water content of materials, special personnel are arranged to cover the materials in the material factory to prevent the rain from being washed directly, and the interfaces are carefully treated to reduce the rain penetration. Set a enclosure around the material to avoid mixing water with the material; At the same time, the drainage system is fully dredged and upgraded to improve the external drainage capacity.

In order to improve the permeability of the material and adjust the ratio of raw materials, the influence of sintering temperature, sintering time, sintering atmosphere and other factors on the permeability of the sinter layer was analyzed through field tests, and the optimal ratio scheme was determined and the sintering process parameters were continuously optimized. Particle size composition is the basic factor affecting the reinforced particle size. In the sintering process, reinforced granulation can improve the air permeability of the mixture.

After a series of efforts, the work of improving the qualified rate of alkalinity has achieved remarkable results and successfully achieved the predetermined goal. This achievement not only improves the quality of sinter, but also significantly improves the smelting efficiency of blast furnace, reduces the production cost, and brings considerable economic benefits to the enterprise.

In order to consolidate this achievement, the raw material factory has developed a series of long-term mechanisms. In the ore blending structure, continuous optimization and adjustment, promote the formation of liquid phase and ensure its fluidity; Stabilize the operation of the batching room, strictly control the level of the material and the amount of the material in the bin, reduce the frozen block and large block in the sinter, and avoid partial incomplete sintering; Strengthen the control of roasting temperature and atmosphere, optimize the proportion of raw materials and the combination of particle size according to the composition and reaction law of sinter. At the same time, strengthen the inspection and maintenance of equipment, requiring operators to pay close attention to the performance changes of the original fuel, and perform dosing operations in strict accordance with the standards to ensure that the indicators are stable.

"Perseverance wears away the stone." In the increasingly fierce market competition, Hebei Xinda Group, with the joint efforts of all units in cost reduction and efficiency, continues to enhance its core competitiveness and expand a broader market space. In the future, all units will continue to reduce costs and increase efficiency as the core, around energy saving and consumption reduction, stable production key indicators, reduce production costs and other aspects of long-term plans. All employees will also uphold the spirit of unity, cooperation and perseverance, continue to explore new paths to reduce costs and increase efficiency, apply lean management concepts, promote the in-depth implementation of cost reduction and efficiency measures within the Group, contribute wisdom and strength to the high-quality development of the group, and help Xinda continue to lead the industry, create more brilliant performance, and achieve sustainable development goals!