Table 2 Water temperature difference control layer of each layer 1~234-5 Water temperature difference T0.5 From December 30th to now, it has increased to 4.5tA. And it is early and less moving, strengthen the inspection of the spray gun, and ensure 10 spray guns. normal work. Since January 5, 2000, the company has fully utilized the residual oxygen given by the factory to cooperate with the large injection, and achieved good smelting effect. 2.5 Strengthening the central adjustment, controlling the well-operated furnace type to maintain a reasonable operation furnace type is the basic guarantee for high-strength smelting and obtaining high production and low consumption. We strictly control the middle water temperature difference and the furnace wall temperature to make the slag skin relatively stable, and the water temperature difference control 2.6 Strengthening supervision and assessment This year, we learned the lessons of the blast furnace condition on January 1, 1999 and the continuous low furnace temperature suspension material of No. 4 blast furnace on May 21, and formulated the management of furnace condition as the center to eliminate the abnormality of major furnace conditions. The measures are as follows: Firstly, establish a four-level furnace condition management system for the blast furnace length, the duty director, the smelting engineer and the plant manager, and take the furnace chief as the first responsible person to implement the furnace condition management responsibility to the individual. The second is to establish a process supervision and assessment system to supervise the director's implementation of the standardization of blast furnace operations. The third is to timely feedback the quality of the original fuel, and take corresponding countermeasures according to the changes in the original fuel conditions to ensure that the furnace conditions are smooth and stable. The fourth is to implement the annual salary system for the foreman who is on duty in the furnace. There is pressure and motivation to improve the enthusiasm of his work. 3 Conclusion The blast furnace is optimized to strengthen smelting, and the concentrate is the foundation, especially to improve the quality of coke and sinter. The high air temperature is combined with the large injection, the hearth is active, the work is even, and the charging system of the large batch is being divided. The gas flow is better than the oxygen-rich production of the No. 4 blast furnace D900. The effective volume of No. 4 blast furnace is 306m3. It is equipped with a D1000 fan and a D900 fan as a backup machine. The D1000 fan is mainly used in the production, and the D900 fan is mainly used in the short-term maintenance of the D1000 fan. Forced to stop and sent to the province for maintenance, so the No. 4 blast furnace was replaced with D900 fan and oxygen enriched to maintain production. At the beginning of oxygen enrichment, the amount of oxygen enrichment is not limited. However, according to the No. 4 blast furnace tuyere configuration, air volume, air temperature, injection volume and the clinker ratio currently used, the oxygen enrichment is set at 12001400m3/h to ensure that the furnace condition is antegrade and the oxygen in the air volume of the D1000 fan is reached. The quantity, at the same time, does not cause the theoretical combustion temperature before the tuyere to be too high due to the high oxygen enrichment rate, which affects the condition of the furnace. Compared with the highest monthly output of 750t/d of D900 fan without oxygen-rich production, the average daily output in October reached 888.82t/d when the oxygen enrichment reached 1200m3/h, an increase of 18.5%, and the use of D1000 fan (1998) From October to January 1999, the average daily output was 866.31t/d, which increased by 2.6%. At the same time, because oxygen is used to ensure the residual oxygen after the converter is used, the oxygen plant is reduced. In other words, it reduces energy waste and improves economic efficiency. In addition, after oxygen enrichment, the temperature at the tuyere is increased. The burning rate of coal is improved, which is conducive to stable injection, and the physical heat of slag iron is improved, which is beneficial to reduce. Compared with October-December 1998, it decreased by 0.06%. At the same time, with the decrease, the comprehensive coke ratio decreased by llkg/tFe. (Li Shun Yin Lin Junxian) Digital mining has been with us for over half a century, and the mining sector has embraced the introduction of new technologies, such as plant control systems, GPS technologies, mobile broadband and automated haulage. Notwithstanding the long journey that digital mining already has taken, the rate of recent development seems incongruous with the perceived opportunity. Digital Mine Solution,Digital Mine Software,Mining Industry Software,Mine Dispatch System Dandong Dongfang Measurement & Control Technology Co., Ltd. , https://www.dfmc-tec.com
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