冶金活性石灰烧制过程最佳工艺制度

Optimum schedule in calcination process of metallurgical active lime

在实验室对回转窑烧制活性石灰的工艺进行了模拟,发现对CaCO3分解后形成活性石灰影响较大的参数为预热温度、预热时间、锻烧温度和煅烧时间.活性石灰烧制的最佳参数为:预热温度700℃,预热时间60min,与此对应的锻烧温度1150℃,煅烧时间15min.选用宣化钢铁公司生产的石灰石原料,得到的活性石灰的活性度可以达到410mL.

The calcination process of metallurgical active lime in a rotation kiln was simulated in laboratory. It is found that preheating temperature, pre-heating time, calcination temperature and calcination time are the most important factors in this process. The optimal parameters is the pre-heating temperature of 700℃, the pre-heating time of 60 min, the calcination temperature of 1 150℃, and the calcination time of 15 min. Under this optimal condition, the activity of active lime produced by the raw material of limestone from Xuanhua Steel in China is 410 mL.