河南某白云石矿煅烧试验研究  

Experimental Study on Calcination of a Dolomite in Henan

作　　者：李威 邵世威 邓晓珂 LI Wei;SHAO Shiwei;DENG Xiaoke(The Geological Disaster Prevention Center,Henan Geological Bureau;The First Geological Exploration Institute of Henan Geological and Mineral Exploration and Development Bureau)

机构地区：[1]河南省地质局地质灾害防治中心,河南省郑州市450000 [2]河南省地质矿产勘查开发局第一地质勘查院

出　　处：《现代矿业》2023年第1期195-197,共3页Modern Mining

摘　　要：为了查明河南某白云石矿煅烧后白云岩的灼减以及活性,针对白云岩在不同煅烧温度和时间下产生的不同差异问题进行了煅烧试验研究。通过差热分析得到白云石的分解温度,白云石煅烧温度及时间为1100℃、90 min时,煅烧后的灼减与活性度达到最大,灼减为47.36%,活性度达225.6 mL,煅烧后产品化学成分主要为MgO、CaO,含量分别为40.50%、55.68%;物质组成主要为石灰石、方镁石,含量分别为54%、41%。试验结果表明:白云石的煅烧适宜温度为1100~1150℃,适宜时间为30~90 min,主要物质组成为石灰石、方镁石。In order to find out the burning loss and activity of dolomite after calcination of a dolomite mine in Henan,the calcination test was carried out to study the different differences of dolomite at different calcination temperatures and time.The decomposition temperature of dolomite was obtained by differential thermal analysis.When the calcination temperature and time of dolomite were 1100℃and 90 min,the ignition loss and activity after calcination reached the maximum,the ignition loss was 47.36%,and the activity was 225.6 mL.The chemical composition of the calcined product was mainly MgO and CaO,and the content was 40.50%and 55.68%,respectively.The material composition is mainly limestone and periclase,and the content is 54%and 41%respectively.The results show that the suitable calcination temperature of dolomite is 1100~1150℃,and the suitable time is 30~90 min.The main components are limestone and periclase.

关 键 词：白云石 煅烧制度 煅烧温度 活性度 

分 类 号：TD873.4[矿业工程—非金属矿开采]