The experiments showed that after 1300 ℃ in rotary kiln calcining carbonaceous materials have achieved full contraction, so the firing temperature is usually about 1300 ℃ more appropriate choice. If the calcination temperature is too low, the carbonaceous material will not be fully contracted, the volatile material can not be completely ruled out, the raw material can not achieve uniform and stable physicochemical properties, the firing process in the next material particles shrink again, will lead to deformation or produce products crack, and the products of relatively low density and mechanical strength, in order to avoid particles of the carbonaceous material produced in the heat treatment quick firing shrinkage, generally the calcination temperature and calcination temperature should be higher. If the calcination temperature is too high, decrease the bulk density of raw materials, products, mechanical strength, and the refractory masonry calciner calcining temperature is not allowed to mention too high. Thus, a suitable calcining temperature can not only ensure the quality of the calcined material, and can extend the life of the firing device. According to long-term experience in production, calcination temperature carbonaceous feedstock generally 1250 ~ 1380 ℃. Professional production of rotary kiln, Henan YuFeng Heavy Equipment: The main products are: lime kiln, rotary kiln, ceramic sand | sand rotary kiln, rotary kiln calcium aluminate powder, laterite nickel ore rotary kiln, rotary kiln magnesium, zinc oxide rotary kiln, rotary kiln bauxite, petroleum proppant rotary kiln, rotary kiln, disc granulator, wind swept coal mill, ball mill, preheater, burners, coolers, etc .. Welcome new and old customers to our company to negotiate! reproduced please specify Henan YuFeng Heavy Machinery