KR Desulphurization Of Hot Metal Ladle Refractory Life Study

140 thot metal ladle as the main equipment of blast furnace production,not only bear the molten iron transport task,at the same time, also is the main tool for hot metal pretreatment. In the process of transport molten iron, the scour, iron chemical erosion, and the function of heat and cold stress, hot metal ladle work lining layer easily appear damage phenomenon. On the other hand, in recent years, the Laiwu iron and steel in order to meet the market requirement for the quality of steel products,reduce the production cost of steel products and improve the steel enterprise market competition ability, continuously optimizing smelting process, to improve the quality of steel products, steel into the optimization improvement of desulfurization technology. From the original injection desulphurization to KR desulphurization technology is more advanced. KR desulphurization process after putting-in-service proactively, aggravated damage to the hot metal ladle refractory. Serious when directly cause the service life of the hot metal ladle halve, causing the blast furnace tank strained situation. To sum up, hot metal ladle lining refractory demand is higher and higher, previous lining with clay bricks and high alumina brick already can not meet the requirement of the lining to use, as a result, in order to meet the need of KR desulphurization, optimize the hot metal ladle refractories such as the improvement is very important.In this paper, combining with the 140 t iron POTS in the actual usage in the process of production. Through the iron can work layer lining material is optimized to improve, improve the work of lining layer of oxidation resistance, slag resistance and thermal shock stability, etc. At the same time, adopt the method of heat transfer analysis, on hot metal ladle masonry structure and the working layer of the bottom material ratio adjustment, optimization and so on. Improve the service life of the hot metal ladle lining work layer, reduce the cost of Hot metal ladle masonry,to improve the efficiency of hot metal ladle match tank.