In the paper, the analytical research on the training of Baotou Steel Union Co., Ltd. based on demands is tried to carry out through establishing competency model to formulate more targeted training plan, achieve the purpose of training system optimization, improve training quality and really realize effective talent training, which provide training orientation and theoretical support for the "talents make enterprise strong" strategy as well as lay a good foundation for the long-term development of enterprise.

In this paper, the present situations, existing problems for utilizing waste heat and complementary energy as well as the main factors influencing recycling waste heat and complementary energy in iron and steel enterprises are analyzed by taking an iron and steel enterprise as an example. Moreover, such measures for recycling waste heat and complementary energy as replacing heating steam by recycling low-quality waste heat, increasing power generation users to utilize surplus steam, shuting down and optimizing dispersive bathhouses as well as establishing new high-efficiency gas-steam power generation system are proposed so that the regional heating balance can be achieved, steam consumption can be reduced and utilization efficiency of waste heat can be improved after implement them.

In this paper, the problems during the long-term low-load production of 6 m large capacity coke oven of Baotou Steel are summarized. They are effectively solved by monitoring and adjusting the heating schedule and changes of coke oven so that the normal operations of coke oven and its supporting facilities are ensured.

The performance indexes of gas coal are analyzed and mastered through the experimental study on gas coal of Shaanxi and Shanxi. The coke quality is improved to a certain extent, coal blending cost is reduced, range for coking coal of Baotou Steel is expanded, tension trend of coking coal is relieved and amount of high-quality coking coal is saved by optimizing coal blending structure, reasonably using coal type and replacing part of coking coal combining with the using status for existing coal types of Baotou Steel.

In the production process of coking, blending coal as the main raw material determines not only quality of coke, but also cost and profit of coking enterprises. At present, the adjustment for proportion of single coal with experiences is mainly applied for coal blending in coking enterprises, which lacks scientific basis, so it is difficult to achieve high cost-effective coal blending scheme to optimize the coal blending structure for coking. In this paper, it is introduced the purposes of reducing cost of blending coal, improving coke quality, reducing cost of metallurgical coke and improving benefit of enterprises are achieved by using artificial neural network to predict coke quality and using simulated annealing algorithm to optimize proportion of single coal with coke quality as the constraint condition and cost price of blending coal as the optimization objective.

In this paper, it is summarized the construction for modifying the steel structure of hot blast pipe for Kalugin top combustion stove of 4 150 m³ blast furnace of Baotou Steel as well as introduced its idea and process control of construction quality so as to provide the references for overhauling pipe of hot blast stove for large blast furnace.

In this paper, the basic characteristics of low sulfur Mongolian concentrate are studied with micro sintering method and the experimental study on adding low sulfur Mongolian concentrate instead of self-produced concentrate in sintering with sinter pot is carried out. The study results showed that the low sulfur Mongolian concentrate was with such characteristics as high assimilation temperature, poor liquidity of liquid phase and high strength of bond phase; with the increase of proportion for low sulfur Mongolian concentrate replacing self-produced concentrate, the sintering yield, utilization coefficient and drum strength of sinter showed a trend of first increasing and then decreasing, solid fuel consumption showed a trend of first decreasing and then increasing as well as composite sintering indicator was optimum when the proportion was 20%.

In this paper, it is introduced the experiment of intensifying sintering by replacing part of coke powder with natural gas using sinter pot carried out in the laboratory by taking natural gas as the object of study. The study results showed that the yield of sinter, drum strength, solid fuel consumption, reducibility of sinter, low-temperature reduction degradation index and microstructure of sinter were optimum when the jet time of natural gas was 15 min and adding proportion of heat was 25%.

In the paper, the effects of such four factors as calcination temperature, calcination time, proportion of bentonite and preheating temperature on content of FeO in pellet are studied based on the actual situation of material for the production with belt type pellet firing machine of Baotou Steel. The orthogonal experiment with four factors at four levels is adopted. The experiment results showed that the factors influencing content of FeO in pellet from strong to weak were calcination time, calcination temperature, proportion of bentonite and preheating temperature. It is optimum that calcination temperature is 1 240 ℃, calcination time is 14 min, proportion of bentonite is 2.0% and preheating temperature is 600 ℃ as well as it is the worst that calcination temperature is 1 240 ℃, calcination time is 8 min, proportion of bentonite is 3.0% and preheating temperature is 900 ℃.

In this paper, the quality index of sinter is studied by adding Mongolian ore fines instead of different iron charges with sinter pot. The study results showed that there was no obvious change for quality index of sinter with 8% Mongolian ore fines instead of 8% FMG ore fines and the quality index of sinter was improved with 15% Mongolian ore fines instead of 15% WPF ore fines.