Win the five major battles, see my "master move" ①11.22

"Five major battles" in full swing thousands of acres of sea passionate in this war, the majority of cadres and workers to a place to think, to a place to make the initiative to integrate, actively participate in their own work, active work from their own, from now on, from daily start have shown their own "magic" to contribute to the final victory

Trick: the block ore is guaranteed to be "fine, accurate and high" and "block ore" as a high-grade ore that can be directly put into the furnace, which is the material basis of blast furnace smelting. Affected by the continuous rainfall of the rainy season, some block ore is soaked by rain, which is not easy to use and screen, and the "wet" block ore affects the smelting effect after entering the blast furnace. In order to ensure the stability of the blast furnace, led the team members to carry out a series of research. By optimizing the layout of the storage space of the primary storage yard, the wet lump deposit is released, and the "fine" control of the lump ore is realized. Adopt the "dual-machine dry and wet mixing and collecting method", adjust the main belt expansion head under the stacker and reclaimer, so that the direction and position of the stacker and reclaimer 2500 and the Stacker and reclaimer 9000 are the same, to achieve the purpose of using dry and wet materials at the same time, and the mixing effect is more precise and accurate. According to the actual material, dynamically adjust the material flow to determine the dry material in accordance with 500t/h, wet material in accordance with 300t/h to ensure the quality of the furnace block ore stable, more "high" working efficiency. After taking a series of measures, the drying cost of wet block ore can be reduced by 100,000 yuan during the rainy season. At the same time, it overcomes the difficulty of balancing the supply and taking of the stacker and reclaimer with the same track.
Trick: Combination of spraying and patching, treatment machine coke side furnace head dry hole string leakage Engaged in coke oven maintenance for more than 20 years, has a wealth of practical experience. In view of the problem of dry hole string leakage, we actively learn from the original maintenance methods, and innovatively adopt the shotcrete method to eliminate dry hole string leakage by combining spraying and patching. By using the nozzle to spray the string leak point, the spraying and patching process is completed several times, and the spraying and patching treatment is carried out once after the wet slurry spraying and patching, which has played a good treatment effect. By spraying and replenishing the dry hole, the sulfur dioxide emission in the chimney is reduced, the production cost is saved, and the stable operation of the heating system is ensured.
Trick: Catalyst analysis "clever", "fine", "province" coke oven flue gas desulfurization and denitrification integration equipment due to long investment time, denitrification efficiency and effect is not ideal. Combined with my rich work experience, I led the team members to independently implement the activation of integrated catalyst for desulfurization and denitrification by constantly exploring the temperature control methods of the chamber. By changing the operation regulation of the hot blast stove to the regulation of the opening degree of the hot air valve at the entrance of the chamber, the flexible adjustment of the activated chamber temperature can be achieved in a "clever" way, and the 340℃ chamber temperature and holding time required for catalyst activation can be controlled in a "precise" way. After catalyst activation, the denitrification efficiency of coke oven flue gas is increased from less than 50% before analysis to more than 90%, the functional accuracy of environmental protection equipment is improved, and nitrogen oxide emission is guaranteed. At the same time, the catalyst replacement cycle is delayed, and the cost of replacing catalyst materials and outsourcing construction is about 5 million yuan.
Trick: The "virtual and real linkage" to keep the line "feeding post is responsible for the whole process operation of the raw fuel from the mine tank to the furnace, including the main control room and the two parts under the tank. Post personnel need to manually fine-tune according to the actual situation in addition to the set automatic program, and strive to meet the requirements of various parameters, in addition to basic theoretical knowledge, but also test personal operating experience. The core operating index of the blast furnace "cloth accuracy" in addition to the reasonable opening of the material flow valve is related to the weight of each tank, the smaller the weight fluctuation of each tank, the higher the accuracy of the cloth, and the fluctuation of the weight is closely related to the control of the feeding speed of the vibrating screen and the feeder, the more stable the feeding speed, the more stable the weight control. Therefore, I will adjust the feeding speed of the vibrating screen under the groove according to the value monitored by the observation computer program to ensure the accurate weighing of each batch of materials. At the same time, I will manually set the opening of the feeding valve according to the value fluctuation of the weight of the weighing tank of the blast furnace to ensure that the distributing time and the weight of each gear are within the required range. The "virtual and real linkage" between operation procedure and field equipment is used to reduce the influence of load fluctuation on blast furnace condition.