There are certain influences of fluorinion contained in barren liquor of organic amine on the effects of flue gas treatment in the process of roasting rare earth, so the accurate determination of fluorinion is required. Thus, the ion selective electrode method for determining the content of fluorinion in barren liquor of organic amine is established. The effects of pH value, temperature, accompanying ion and organic amine matrix on the determination results are studied as well as the interference elimination test of accompanying ion is carried out. The research results showed that the influences of organic amine matrix on determination of fluorine could be ignored, pH value was controlled at 5.0~6.0 with acetic acid-sodium acetate, interference of accompanying ion could be masked by adding 10 mL of total ionic strength adjustment buffer, analysis effect was the best with stirring for more than 5 min. when determined under the condition that the temperatures of detection and drawing working curves were the same. For this method, the mass concentration of fluorinion shows good linear relationship within the range of 0.04~40.00 μg/mL, detection limit is 0.021 μg/mL and quantification limit is 0.069 μg/mL.The standard recovery experiment for three barren liquor of organic amine samples is carried out based on this method and the recovery rate is 97.22%~104.10%. The method is applied for determining the fluorinion in three barren liquor of organic amine samples and the relative standard deviation (RSD, n=11) of results are 1.9%~2.4%. The results are basically consistent with those obtained with the chromatography.

Under the circumstances of environmental protection, production limitation and tension supply of agglomerate, it is becoming a new trend in the development of furnace burden structure for iron making to use large proportion of pellet in 2 200 m³ blast furnace of Baotou Steel. The blast furnace condition maintains stable and trouble-free, application of large proportion of pellets in 2 200 m³ blast furnace of Baotou Steel is successfully realized and the proportion of pellet is up to 50% through adjusting and controlling the bandwidth for matrix of burden distribution, amount of central coke, sequence of material discharge at output section, diameter and length of the tuyere, heat reserve of hearth, basicity of slag as well as actively responding to the changes of furnace condition for operations after the proportion of pellet increases.

The data governance refers to the process of transition from using sporadic data to using unified data, from few or no organization flow to enterprise-wide comprehensive data governance and from data confusion to well-organized data. In this paper, the standards and methods of data governance are formulated through the data extraction, cleaning and governance for the system of raw fuel procurement management, transportation management and storage management as well as exploring and researching the application processes combining with the current status of raw fuel procurement, transportation management and storage management. In the process of enterprise informatization, the enterprise development is enabled through informatization, which is the application mode of deep integration for new generation information technology and manufacturing industry as well as will become the core carrier of enterprise competitiveness.

In the paper, the production technology and technological improvement for 500 MPa cold stamping automobile axle housing steel plate are elaborated, the chemical components of Nb, Ti, Cr and Mo as main strengthening elements are designed as well as a series of whole production technology including smelting, continuous casting, heating, rolling and cooling is formulated. The steel plate is with such comprehensive properties as high strength and ductility and toughness, complex cold stamping without cracking as well as small thickness fluctuation on one plate and anisotropy. Its production technology is mature and stable so that the probability of cracking in cold stamping process is greatly reduced, which could meet the technical requirements of automobile axle housing steel and the processing cost is reduced.

With the axle load and transport volume of train increase year by year, it’s necessary to use new type high strength rail to satisfy the operating requirements, prolong the service life of rail and reduce the maintenance of railway. The third generation of rare earth heat-treated rail is successfully developed by Baotou Steel through researching the composition optimization and heat treatment process of rare earth rail. Its tensile strength R_m≥1 300 MPa, percentage elongation after fracture A≥10%, tread hardness HB is 380~430. The experimental study showed that the rare earth was easy to attach to the inclusions in high carbon steel rail so that such inclusions as MnS and Al₂O₃ were modified; simultaneously, the lamellar spacing of pearlite was reduced and austenite grain size was refined by rare earth so as to improve the toughness of high carbon heavy rail steel. The wear resistance and contact fatigue resistance of rail could be significantly improved with new type heat-treated rare earth rail, which is suitable for heavy haul railway and section with small curve.

With the information construction of iron and steel enterprises, more and more data are generated in each link of logistics for crude fuel in iron and steel enterprises. The process of logistics for crude fuel relates to the safety of inventory for crude fuel and utilization ratio of storage space. In order to further improve the utilization of data, the real-time collection and monitoring of logistics data are particularly important. Therefore, the visual management of logistics process could intuitively show the connection and trend among information. In the paper, the applications of visual data management in logistics management of crude fuel in iron and steel enterprises are discussed by taking the construction of visualization system of logistics for crude fuel of Inner Mongolia Baotou Steel Union Co., Ltd. as an example.

The digital analysis system for enterprise finance collects and extracts data from the enterprise resource planning (ERP) information system, yonyou NC system and Internet industry to build the data analysis set of enterprise finance. The financial data is analyzed and mined with the data analysis technology combining with the financial model and financial business; the financial indexes and analysis results are displayed adopting the visual data display technology. The system provides the comprehensive, intuitional and visual analysis means of financial data for the financial staff of enterprise as well as the means of assistant analysis and decision making for operating management finance of manager in enterprise.

The effects of surface morphology for cold rolled automobile steel on the morphology, compactness and phase composition of phosphating film are very important, but there would be inevitably some scratches in such processes as packaging and transportation. The effects of artificial scratches on the surface roughness, morphology of phosphating film and phase composition of cold rolled automobile steel DC04 are analyzed with such test equipment as the surface roughometer, scanning electron microscope and x-ray diffractometer. The results showed that the average value of surface roughness R a was 1.124 μm for mother blank of DC04, average value of peak density R P c was 76.5 cm^-1, R a basically unchanged and R P c decreased slightly after artificial grinding; R a of all samples for DC04 changed a little, but R P c increased slightly compared with those before phosphating; local structure of phosphating film on the surface of sample with artificial scratch was discontinuous, content of incompact zinc phosphate tetrahydrate, Zn₃(PO₄)₂·4H₂O in the phosphating phase was 100%, content of compact zinc ferrous phosphate tetrahydrate, Zn₂Fe(PO₄)₂·4H₂O and value of “P ratio” were zero, so the phosphating effect was poor.

The rare earth wear resistant steel produced by the production line of wide and thick plate of Baotou Steel is the national green design product. In this paper, the distribution of carbon emissions for products in such four stages as within enterprise, load of upstream, transportation stage and recycling by products and carbon emission of each working procedure in enterprise are analyzed as well as the technological paths of carbon drop for rare earth wear resistant steel products are discussed through the life cycle assessment (LCA) of product. The results showed that the carbon emission of rare earth wear resistant steel was mainly in enterprise, accounted for about 78.86% so that such processes as the iron making, sintering and coking as well as energy load in enterprise were the key points of carbon drop, recycle of by products played an active role in carbon drop and applications of advanced technologies made significant carbon drop possible. The carbon emissions in enterprise will be increased by developing high-performance rare earth wear resistant steel, but the effects of energy conservation and carbon drop for the society are significant so that it plays an active role in realizing carbon neutrality in our country to vigorously promote and apply rare earth wear resistant steel.

In this paper, the influences of equipment failure for rolling mill on product quality and improvement measures are discussed by analyzing the relative movement of roll collar for KOCKS rolling mill and flange plate, detection and classification of movement through CAPAS system as well as vibration detection rules of transmission shaft for C module. The results showed that the bending of bars above Φ19 mm was caused by the deterioration of working condition for rolling mill as well as the wave bending of finished product could be effectively improved through maintaining the shaft sleeve and flange plate of rolling mill; the bending of bars below Φ19 mm was caused by the vibration of rolling mill as well as the wave bending of finished product could be obviously improved through repairing the movement and drive system of rolling mill. The axial drifting of roller is determined by strength of rolling bearing of drive shaft so that the vibration of rolling mill is affected. As a result, the wave bending of finished products could be obviously improved through using high quality rolling bearing.