矿物晶体结构对石灰石煅烧过程中热爆裂的影响  

Effect of Mineral Crystal Structure on Thermal Bursting of Limestone During Calcination

作　　者：董德明 傅太陆 DONG Deming;FU Tailu(Rizhao Branch,Jinan Baode Furnace Co.Ltd.,Rizhao 276800,China;Jiangsu YULI Energy Saving Technology Co.Ltd.,Nanjing 210019,China)

机构地区：[1]济南鲍德炉料有限公司日照市分公司,山东日照276800 [2]江苏宇力节能科技有限公司,江苏南京210019

出　　处：《工业炉》2022年第6期7-11,共5页Industrial Furnace

摘　　要：竖式石灰窑在活性石灰的生产过程中,常因石灰石发生热爆裂导致局部超温,严重影响窑内耐材的使用寿命。本文分析矿物晶体结构、煅烧参数对于石灰石煅烧过程中发生热爆裂的影响。结果表明:热爆裂更多取决于晶体结构、晶粒大小和升温速度及热强度等,选用较小尺寸的细晶石灰石矿作为煅烧活性石灰的原料可避免或减少石灰石在煅烧过程中发生过热爆裂。In the production process of active lime in vertical lime kiln,local overheating is often caused by thermal cracking of limestone,which seriously affects the service life of refractory materials in the kiln.The influence of mineral crystal structure and calcination parameters on the thermal cracking of limestone during calcination is analyzed.The results show that thermal cracking depends more on crystal structure,grain size,heating rate and thermal strength.Selecting fine crystal limestone ore with smaller size as raw material for calcining active lime can avoid or reduce the occurrence of overheating and cracking of limestone during calcination.

关 键 词：石灰石 煅烧 矿物晶体 热爆裂 活性石灰 

分 类 号：TQ177.26[化学工程—硅酸盐工业]