Focusing on the goal of cost reduction and efficiency increase in 2024, the companies of Hebei Xinda Group strictly follow the working idea of "pursuing extreme efficiency, creating extremely low cost, and giving full play to extreme energy efficiency", work hard and implement in the three aspects of "stability", "breaking" and "standing", carry out in-depth actions of cost reduction and efficiency increase, adhere to the promotion of lean operation, and enhance survival competitiveness. All companies and units attach great importance to it. Anchor the task objectives, in-depth planning and implementation, and provide support for enterprises to reduce costs and increase efficiency with practical actions to ensure that they strive to complete the goals and tasks throughout the year.

Hebei Rongxin Iron and Steel Co., Ltd. closely combined with the group's "cost reduction and efficiency" work requirements, guide the majority of employees to actively respond to the market situation, aim at the goal of "ultimate cost reduction", consciously enhance the awareness of cost reduction, based on positions, strive for excellence.

There are many spatter phenomena in the process of large converter smelting in steel mills, and there are some problems such as low production efficiency and waste of raw materials. Converter spatter is one of the most important reasons for the increase in steel consumption, according to statistics, in December 2023, the spatter furnace accounted for 31.04% of the total monthly production, so controlling converter spatter is a very key measure to reduce steel consumption.

In order to implement the main tone of the company's "management improvement, extreme cost, system breakthrough, quality improvement", the steelmaker adheres to the principle of "all costs can be reduced, all costs must be reduced", firmly carries out cost control, tightly grasping the key items of steelmaking cost, controlling converter spatter to reduce steel material consumption, researching targeted measures and effectively implementing them. To reduce steel consumption index hit a heavy combination of fists.

After the research of the company's leaders, it was decided to set up a problem to reduce the converter spatter, and the steel plant set up a quality group under the leadership of Liu Guojun, the director, and immediately carried out research. In order to completely solve the problem of sputtering in the converter, the team members conducted in-depth on-site inspections twice a day. The converter workshop sorted out all the restrictive links of the smelting process and constantly proposed improvement plans. By reasonably controlling the use of raw materials and iron-containing materials and adopting changes in human operation, the sputtering reaction was controlled. Fundamentally to control the Bessemer blowing spatter occurrence.

Main improvement measures

By preparing the workshop process, the relevant information such as hot metal composition, temperature and slag thickness is provided for the converter process in time, so as to adjust the auxiliary materials and the converter operation in time.

In the case of abnormal composition of hot metal and large amount of slag, the hot metal is pre-treated by means of folding iron and skimming, so that it is more suitable for smelting needs, in addition, it can also significantly improve the quality of iron and steel products, reduce energy consumption and environmental pollution.

Organize the operators of key positions such as furnace captains and shakers to carry out smelting knowledge and smelting skills training to improve the technical level of operators. By paying close attention to the implementation of the above measures and optimizing the operation, the spatter of steel converter has been greatly improved.

Compared with December 2023, the splash furnace accounted for 15.3%. From the data point of view, the spatter is significantly reduced, which has made a great contribution to the cost reduction and efficiency improvement of steel mills. It is estimated that the effect of reducing the converter spatter is about 4.056 million yuan/month.

As long as the mind does not slide, there are always more ways than difficulties. The achievement is the result of Xinda's efforts on all fronts toward a unified goal, and it is the true portrayal of the Xinda people who couragantly move forward. Their unremitting struggle practice allows the tree to sprout and take root. In the future work, Xinda should continue to base on the actual, accurate force, to reduce costs and increase efficiency as the starting point, firmly establish the firm perseverance of repeatedly charging, concentrate on the unity of thought, gather wisdom in innovation and efficiency, gather strength in joint efforts, through the implementation of technological transformation, repair old benefits and waste, optimize the configuration and other measures, comprehensively promote the cost reduction and efficiency work to go deep and solid. Contribute to Xinda's high-quality development!