热压含碳球团冷态强度的实验研究  

Experimental Study on Cold Strength of Carbon Composite Iron Ore Hot Briquette

作　　者：储满生[1] 王兆才[1] 艾名星[1] 柳政根[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2009年第5期696-700,共5页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2008AA03Z102)

摘　　要：重点考察了煤种及热压工艺参数对热压含碳球团冷态强度的影响，并探讨了热压含碳球团获得高强度的机理．研究表明，煤种、配煤量、热压温度、配煤粒度及热压压力等热压工艺参数对热压含碳球团强度具有显著影响，其中热压温度是影响冷态强度最重要的因素．热压工艺利用煤的热塑性保证煤矿颗粒充分接触，增大粘结面积，从而使热压含碳球团的强度高于冷固结含碳球团．从冷态强度角度出发，以鹤岗烟煤为原料生产热压含碳球团的适宜工艺参数为配煤量25％～35％，热压温度450℃，配煤粒度〈90μm，热压压力不低于35MPa．The effects of coal from different mines and hot briquetting process parameters on the cold strength of CCB were investigated, as well as the mechanism of acquiring high strength of CCB. The experimental results showed that the process parameters including the coal used, coal proportioning, hot-briquetting temperature/pressure and coal size all have significant effects on the cold strength of CCB, among which the hot-briquetting temperature is the most important factor. With the thermal plasticity of coal, the hot-briquetting process could ensure that the coal particles are in full contact with iron ore and enlarge the bonding area, thus providing the higher cold strength for CCB in comparison to cold-bonded briquette. To keep up the cold strength with the soft coal from Hegang Mine used for CCB, the appropriate hot-briquetting process parameters of CCB are recommended as follow： coal proportioning 25 % -35 %, coal fine size less than 90 〉m and hot-briquetting pressure higher than 35 MPa.

关 键 词：热压含碳球团 热压工艺 煤的热塑性 冷态强度 

分 类 号：TF046.6[冶金工程—冶金物理化学]