粉煤冷压成型结焦工艺强度的影响分析  

Influencing factors of coke strength by cold briquetting coke technology of pulverized coal

作　　者：陈升[1] 胡翠[1] 陈雯[1] 马涛[1] 黄文豪[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《洁净煤技术》2015年第6期11-14,共4页Clean Coal Technology

摘　　要：为解决我国粉煤利用率低造成的污染问题,在实验室条件下采用冷压成型结焦工艺对粉煤进行成型处理,并通过米库姆转鼓机以及扫描电镜（SEM）对成型后型焦和焦炭进行机械强度与微观形貌表征,重点研究了配煤比例、温度、粒度、堆密度等对粉煤冷压成型结焦工艺中焦炭强度的影响。结果表明,最佳试验条件为：贫瘦煤与焦煤质量比6∶4,结焦温度800℃,主焦煤粒度0.212~0.18 mm,贫瘦煤粒度〈0.25 mm,堆密度1.1 t/m3,此时焦炭抗碎强度M25及耐磨强度M10分别在85%以上与10%以下。In order to solve the pollution problem caused by low utilization rate of pulverized coal in China,the cold briquetting coke tech-nology under laboratory conditions was used to handle the coal powder. The mechanical strength and microstructure of the coke were testedand characterized using the drum machine and scanning electron microscopy（SEM）. The effects of temperature,coal blending ratio,parti-cle size,density on the technological process were studied. The results showed that under the best experimental conditions,the coal blend-ing ratio between meager-lean coal and coking coal was 6 ∶ 4,coking temperature was 800 ℃. In order to control the main cokingcoal granularity at 0. 212 mm to 0. 18 mm,the best meager-lean coal particle size was-0. 25 mm,the bulk density was 1. 1 t/ m3,underthis condition,the coke strengthM25andM10 after coking were more than 85% and less than 10% respectively.

关 键 词：冷压成型结焦 机械强度 温度 配煤 堆密度 

分 类 号：TQ531.1[化学工程—煤化学工程]