Discussion And Research On The Economic Life Of Converter

With the continuous development and progress of society, the competitiveness of enterprises continue to increase, the benefit is deciding enterprise of vital importance. Converter plays an irreplaceable role in the steelmaking plant, and the life determines the enterprise’s benefit. At the end of the twentieth Century, the domestic large steel mills are of exploration and research of BOF converter campaign life long, continuous improvement, through the use of slag splashing on the less slag smelting furnace and the "iron removal after three" and other measures, service life reached 10000 heats above is not the problem. Long after the converter to a great extent, solves the problem of iron and steel logistics balance, but brought in three aspects: one is the effect of lining erosion resistance performance requirements of the refractory high cost, not only large fabric and gunning material in the furnace campaign in the late consumption, and slag splashing in the later constant cost to improve the. Effects of two is blowing life is obviously reduced, variation blowing effect. Effects of three is due to the increase in the furnace campaign later mending times, can not play the blast furnace iron and steel logistics age balance effect, become limiting production process. Later, so the campaign reached a certain level of life improve, obtain economic benefits is the magnitude of decline, as to the best campaign, to maintain the best economic benefit is more reasonable, the life is too high to equipment maintenance, especially the production organization coordination is not good, as well as planned shutdown. The slag splashing layer of slag splashing in repeated condition, harmful elements, affecting the quality of steel smelting, especially suitable for high quality steel. Life is too high, late campaign bottom blowing and the furnace body maintenance difficulties. So it can be concluded from the age is not the higher the better, so the development of economical service life be imperative. As the best point to find the economical furnace life of converter in the converter, the slag splashing, mending parameter, material price set according to the actual situation, by adjusting the ratio of slag splashing slag splashing, time, slag flow, mending, fettling material consumption, fettling period, the comprehensive cost low control in the best economic the scope of life, to find the best campaign. The implementation of economic life, the slag splashing and fettling and lining maintenance time, improve the operating rate of the converter, so as to improve the production capacity, the annual increase in output of 47400 tons. The implementation of the economic life of blowing ratio is greatly improved, bottom blowing effect is obviously improved, can make the cost of per ton steel is reduced, the cost of per ton steel can be reduced by 6.30 yuan, increasing economic benefit.