The Research On Dust Using Effect On Sintering Process And Saving Energy And Reducing Consumption

Increasing demand for iron ore make the prices of ore continue to rise, but the index ofsteel price change is obviously lagging behind, facing difficulties, enterprises of iron and steelmust try various devices to reduce production cost and reduce harm to the environment. Inorder to make full use of the dust of Shougang Shuicheng Iron&Steel (Group), to realizeresource and recycling of the dust while reducing environmental pollution. Studied the contentof the dust influence on the ratio of raw materials, the permeability of layers,the sinterquality,fuel consumption and coefficient of the equipment utilization through single factor testmethod. Test showed that, when the adding quantity of dust is2%, the granulation and thepermeability of layers is better, the accounted of+3mm size is57.8%, speed of sinteringreaches26.32mm/min, the shrinkage of material layer rate was14%, fuel consumption is80.8kg/t, the utilization coefficient of equipment is1.93t/m2·h, the sinter quality is better andthe sinter indexes were higher.After adding2%dust, studied the consumption of the fuel and particle size of the fuel andthe temperature of the sintering raw material influence on the quality of the sinter of Shuichengiron&steel through the single-factor test. The results show that, when the fuel quantity is5%,the fuel particle size of less than3mm particles accounted for88%, material temperature is60℃, the sinter quality is higher, the sinter tumbler index and drop strength is72.18%,76.07%,FeO content is7.23%, the rate of finished products is85.66%. According to this ratio can saveabout1.94millions yuan in fuel costs, save about3.8millions of the cost of raw materials.Finally, through orthogonal test showed that: the influence of each factor on the drumindex order is material temperature>fuel usage>fuel size, influence on the drop strength andcontent of FeO are fuel usage>fuel size>material temperature, the influence on finished productrate is fuel usage>material temperature>fuel size. Comparing with the best condition throughsingle factor experiment found that there is a certain interaction effects between these threeconditions.