Rotary furnaces are usually used for calcining chemical clinker. This type of equipment does not generate too much smoke and dust when used, and of course, the operation is also relatively environmentally friendly. So, how to achieve smokeless operation of this equipment?
When the volatile content of anthracite in the calcined materials of rotary furnace equipment is low, can some bituminous coal be added to replace anthracite as the calcination fuel, and the volatile content of anthracite in the calcined materials is higher than 8%?
. Due to excessive virtual heat and insufficient fuel retention, some coke powder can be added to replace some anthracite coal in burning cement Determination of the ratio of coke powder to anthracite. The amount of coke powder used is too small, and the effect is not significant; Excessive dosage, due to the high ignition point of coke powder, the combustion zone is easy to move down, the clinker cooling is not good, and it is easy to agglomerate. Through production practice, it should be decided to use an appropriate coke powder content Due to the use of coke powder, the water consumption will increase by about 1% compared to the original to ensure the quality of pre added water for the pellets. The coke powder has a high ignition point, is not easy to ignite, and the bottom fire is easy to pull, which can shorten the position of the bottom fire layer of the vertical rotary kiln from 1.5m to 1.3m from the original kiln top; The thickness of the wet material layer has been changed from 400mm to 300mm, which is beneficial for the cooling of the clinker. The temperature of the discharged clinker is controlled at around 150 ℃ Because the coke powder is relatively loose, it is equivalent to adding washing abrasive after grinding, reducing the phenomenon of ball wrapping in raw material grinding. Therefore, the use of coke powder can improve the grindability of raw materials and increase the grinding yield of raw materials It should be noted that the rotary furnace is mainly used for magnetization roasting of lean iron ore, oxidation roasting of chromium and nickel iron ore in steel plants in the metallurgical industry, roasting of high alumina vanadium earth ore in refractory materials plants, roasting of aluminum clinker and aluminum hydroxide in aluminum plants, and roasting of chromium ore sand, chromium ore powder and other minerals in chemical plants The above is the main content of how to achieve smoke-free operation of rotary furnaces during use
