神东矿区煤泥高温快速干燥特性研究  

Study on high-temperature and rapid drying characteristics of coal slime in Shendong mining area

作　　者：商玉坤[1] 武建军[1] 王伟[1] 蔡志丹[1] 李慧蓉[1] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116

出　　处：《矿山机械》2012年第1期77-81,共5页Mining & Processing Equipment

基　　金：国家高技术研究发展计划(863)项目(2007AA05Z339)

摘　　要：采用高温快速干燥技术对神东矿区的煤泥进行了试验。考察了温度(380℃、400℃、420℃、440℃)和时间(5s、10s、15s、20s)对煤泥(保德、大柳塔、石圪台、布尔台煤泥)含水率的影响,并通过与普通低温(100℃左右)干燥技术的对比,分析了高温(400℃左右)快速干燥煤泥的特性。结果表明,不同煤泥在不同温度下出现最大干燥速率的时间不同,经历的预热阶段、恒速干燥阶段和降速干燥阶段的时间长短也不同;高温快速干燥可以取得与普通低温干燥相同的结果。A test for coal slime in Shendong mining area was carried out under high-temperature and rapid drying conditions.The effects of temperature（380 ℃,400 ℃,420 ℃ and 440 ℃） and drying duration（5 s,10 s,15 s and 20 s） on the moisture content of coal slime（Baode,Daliuta,Buertai,and Shigetai Mine） were studied,and the drying characteristics were analyzed through comparison between high-temperature（400 ℃ or so） rapid drying technology and ordinary low-temperature（100 ℃ or so） drying technology.The results showed that the time when the maximum drying rate of different coal slime appeared were different at different temperatures,the duration of warm-up phase,constant-rate drying phase and deceleration phase were also different.The drying results of the high-temperature and rapid drying process and ordinary low-temperature drying process were the same.

关 键 词：煤泥 高温 干燥 红外光谱 

分 类 号：TD94[矿业工程—选矿]