"Equipment and personnel safety, production quality standards and low costs are the goals of every employee in our section." This is the work goal of the rotary kiln section of the raw material plant of Hebei Xinda Iron and Steel Group Co., LTD. Section chief Yang Zhanwen led three teams of more than 80 people in the past year to achieve new breakthroughs in production and quality, to ensure the stable and high-quality supply of lime products, the section won the Hebei Xinda Group 2023 advanced science section (team) title.

Through the practice of improving the screen of the feeding system in the past year, the rotary kiln section has made new breakthroughs in the quality of lime products, and in 2024, a new screening system will be launched to further improve product quality.

The finished products of rotary kiln are mainly used for steel slag making and sintering in raw material plants. The product quality requirements are high, in order to ensure that the downstream customers to provide high-quality finished products, the rotary kiln section in the quality of hard work. In the production process, the gas permeability in the kiln is directly related to the quality of the product, and the primary factor determining the gas permeability is the quality of raw materials. According to the actual situation of raw materials, the rotary kiln takes specific measures to ensure the calcination gas permeability in the kiln.

The optimal combustion state of the ore in the kiln is rolling combustion, if the ore raw material particle size is not up to standard, not only affect the gas permeability, but also the combustion state in the kiln may be sliding combustion, resulting in inadequate combustion. In view of the particle size of raw materials, the rotary kiln made technical changes to the screening system. The feeding system of the rotary kiln originally used a 15mm hole screen with small hole diameter, which made it difficult to screen the flake materials in the material, easy to cause negative pressure and ring formation in the furnace, affecting the distribution of air flow and the stability of the kiln condition. In this case, the rotary kiln "the right medicine", the original diameter of 15mm round hole screen is adjusted to the diameter of 18mm square hole screen, reduce the amount of gray stone below 20mm, through this measure, improve the quality of raw materials into the kiln, reduce the raw burning to about 8%, so that the processing cost is reduced to 232 yuan/ton.

In addition, in terms of operation, Yang Zhanwen, the section chief, required the three teams to unify the standard operation, strictly implement the standardized operation instructions, prevent production fluctuations, and further promote the stability of production quality.

Safety is the premise and basis of all work, and the rotary kiln section attaches great importance to safety production work, not only taking safety as the primary factor of team performance assessment, but also arranging safety knowledge training guidance according to the age characteristics of employees and post characteristics, not only emphasizing the operation precautions of each post in the meeting before and after work, but also putting safety belts on the post, as long as there is free time, Section chief, team leader and safety full-time staff will go deep into the post, explain the safety precautions of the post on the spot, deepen the impression, and improve the safety awareness and attention of employees.

In order to further strengthen the work of production safety in the workshop, employees are regularly organized to carry out special fire safety drills at key safety process points according to the production characteristics of the workshop, so as to improve the emergency response ability of employees and ensure safe production. Under the dense management of the workshop, the rotary kiln will achieve "zero accidents" in safe production in 2023.

In terms of equipment management, the rotary kiln earnestly implements the integration of operation and inspection. In addition to the professional maintenance of the maintenance team, in daily work, the workshop attaches great importance to guiding the staff to maintain the equipment while in production, and inspects and maintains the key points while operating the equipment every day. If the equipment is found abnormal noise, temperature, vibration, smell, etc., contact maintenance in time to ensure the stable running of the equipment. Under the effective implementation of the integration of operation and inspection, the rotary kiln has achieved equipment safety "zero accidents" in the past year.

A series of combination of "stable production", "quality assurance" and "safety of equipment personnel" rotary kilns have not only ensured the production and supply of Hebei Xinda Iron and Steel mills and raw material factories, but also sometimes supplied Hebei Rongxin Iron and Steel, providing a guarantee for the production of the next process.

At the critical moment of the rapid development of the group, all cadres and staff should closely focus on the development ideas of the enterprise, constantly improve skills and standards, fully release the enthusiasm for innovation and creative potential, maintain and carry forward the spirit of courage to stand ahead of the tide, surpass the courage of predecessors, keep pace with The Times, and demonstrate their achievements in the development. We should keep pace with the advanced, learn from the example, learn from their loyalty, responsibility, and exemplary spirit of ownership, adjust the work standard to the highest, adjust the mental state to the best, adjust the work momentum to the maximum, and strive to become the pioneer of The Times and make new contributions to the development of Xinda with the practical action of bravely bearing the burden!