Latest ArticlesDue to the design defects of steel structure on furnace top of 4# blast furnace in Baotou Steel, it is necessary to make special sling for replacing the distributing device. The preliminary design and analysis of sling are carried out with the Inventor software. The stress distribution, displacement deformation and security coefficient of sling are calculated with the Inventor stress analysis module after modeling of sling so that the actual problems on site are successfully solved.
The article starts with the tilting control process, the design and principle of tilting control system for melting furnace are analyzed from the control principle, hardware design (including the actuator of tilting and the hardware design of tilting controller) and software design of tilting control system. The researches of tilting control principle and casting curve design have played an active role in optimizing the metallic structure of casting piece and improving the uniformity of product thickness for automation of equipment.
In the paper, the working principle, structure and the problems of evaporative air cooler, the cooling facility for closed-cycle water system of 6# blast furnace in Baotou Steel in operation in winter are elaborated as well as the solutions are put forward. The loss of new water in production is reduced and the utilization rate of circulating water for 6# blast furnace is improved through transforming and optimizing the water tank of air cooler, which is further generalized.
In the paper, the causes for nodulation of furnace roller are analyzed based on the characteristic of modified Sendzimir hot galvanizing line of Baotou Steel. As a result, the nodulation of annealing furnace roller is effectively controlled by adjusting and optimizing all the technological parameters and associated equipment which might cause the nodulation of furnace roller. Moreover, the causes, treatment and preventive measures for nodulation of furnace roller are summarized.
In the paper, the installation method of large steel tubular super high tower is systematically elaborated with the installation project for blow-down cylinder tower of purification device for 0.68 million t/a coal-based new material project of Shenhua Group in Xinjiang as background. The installation process is optimized in the construction so that the construction efficiency and quality are improved as well as the economic benefits are very good, which has accumulated experiences for the constructions of similar projects in the future.
In the paper, the turning methods for E stand roller of CCS rolling mill are introduced. The roller consumption is reduced and the turning efficiency is further improved by the comprehensive improvement of professional knowledge level for theory and practice of turners as well as further strictly controlling the whole manufacturing process of parts with such details as tool path determination, parameter setting, turning procedure programming and simplification.
In the paper, it is mainly introduced the application of solidification terminal electromagnetic stirring technology in round billet caster at Baotou Steel. The results show that when the billet section is Φ390 mm and the steel type is medium carbon steel, the optimal F-EMS parameter is 450 A/8 Hz. The central carbon segregation index of the billet is reduced through the optimized F-EMS parameter, and the equiaxial crystal ratio of the billet is increased, by which the internal quality of continuous casting billet is improved.
The reasons for the frequent damage of tuyere in No.3 blast furnace of Baotou Steel are analyzed, and measures such as reducing the alkali load, maintaining the upper limit of physical temperature, furnace temperature controlling mainly in physical temperature, lowering the coal ratio, and strengthening the foundation work are adopted to control the frequent damage of tuyere.
Through the optimization design of the system, the operation efficiency of the 1 000 m3 blast furnace feeding system in the old area is improved, which makes the technology distribution of the dust removal pipeline more scientific, the air volume reasonably distributed, and the dust removal capacity matched with the production process. Reduce the post dust concentration to the exposure limit specified by the national standard.
The paper briefly explains the working principle of Baotou Steel distributor and its application in No.7 blast furnace top distributor of Baotou Steel. The reason for the short life of distributor is analyzed, and the performance characteristics before and after improvement of distributor are studied. The replacement process of the new distributor (Qin Ye distributor) in No.7 blast furnace is introduced. After the replacement, the distributor reaches the requirements of angle burden distribution in blast furnace, which plays a positive role in stable and smooth production of blast furnace.
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
