摘要
以硫酸渣和煤粉为主要原料,对硫酸渣含碳球团进行焙烧,考察焙烧时间、焙烧温度、配碳量对球团金属化率的影响,确定了最佳工艺参数,即焙烧温度为1 225℃、焙烧时间15 min、(C)/(O)为1.2时,球团金属化率可达92.5%,此工艺参数满足转底炉高效还原的特点,适用于转底炉工艺。
Carbon containing pellets which were made by pyrite cinder and pulverized coal as raw material were introduced to roasting process. The influences of roasting time, roasting temperature, coal amount on metallization rate were investigated. Results showed that roasting temperature of 1 225 ℃, roasting time of 15min and n （C）/n （O） of 1.2 were the optimal control parameters, metallization rate reached 92.5% under these circumstances. These control parameters fulfilled the high reduction efficiency characteristic in rotary hearth furnace, thus, pellets which made up of pyrite cinder are suitable for rotary hearth furnace smelting technology.
出处
《工业加热》
CAS
2013年第4期44-46,共3页
Industrial Heating
关键词
硫酸渣
直接还原
金属化球团
金属化率
pyrite cinder
direct reduction
metallized pellets
metallization rate
