In December 2021, the steel mill of Shandong Jute Pipe Industry Co., Ltd. synchronized the maintenance arrangement, and the 5 # mixed iron furnace (nominal capacity of 1300 tons) stopped for maintenance, which refreshed the iron throughput index of the same type of mixed iron furnace, effectively reduced the labor intensity of personnel, saved the cost of material resistance, and achieved an effect of 2.35 million yuan.
Upgrade supporting materials and facilities to improve the comprehensive utilization rate of resistant materials.For the working environment and physical and chemical performance requirements of the furnace lining, The unit customized resistant materials, targeted materials, Strive to achieve uniform erosion of mixed iron furnace lining; Combined with the problems arising during the use process, Flexible use of wrong joint masonry, partial casting, mixed repair and other construction measures, Carefully calculate the expansion coefficient of each material type, Control masonry seam with chrome corundum mud, Ensure the integrity of the working layer materials, Effectively solve the problem of weak brick joints and easy to form an erosion starting point, Stable the furnace lining structure, Improve the comprehensive performance of the furnace lining, Maximize material utilization rates, Reduce the resistance material consumption; Summarize and analyze the problems existing in the use of furnace service, Increase the spacing between the iron groove head and the upper part of the iron port, Reduce the iron slag adhesive furnace wall phenomenon during the iron blending process, On both sides of the elevated slot head simultaneously, Reduce the risk of iron overflow, Extended iron groove head, Adjust the iron flow center position, Reduce the local pits in the working layer caused by the iron mouth end wall in the iron water vortex erosion.
Bottom line awareness against small, for safe production escort.The unit closely keeps the safety red line, strictly control the iron water surface, temperature, furnace air flow, process maintenance and other key control points, control the inclination limit, keep the limit tonnage of the iron water from hitting the furnace bottom directly, implement the principle of “full in and out”, ensure the uniform erosion of the working layer, according to the gas supply, furnace iron water temperature and slag quantity.The unit controls the closed state of the iron mouth cover and observation hole. Organize the production of “three guarantees and two furnaces”, extend the retention time of the iron exchange tank in the furnace, stabilize the gas pressure in the furnace, reduce the working layer of the air convection into the furnace, and protect the furnace lining.At the same time, the unit attaches great importance to the process maintenance, the use of the production gap, the use of heat injection repair, material repair maintenance, and to give a certain sintering time to ensure the maintenance effect.
Post time: Mar-07-2022
