Citation: | LI Zhaohui,XIE Weining,LIN Shengmao,et al. Effect of moisture on anthracite crushing behavior and grinding energy consumption[J]. Coal Science and Technology,2024,52(6):261−269. DOI: 10.12438/cst.2023-0869 |
The change of water occurrence form and content in coal will change the physical characteristics and pore structure of coal, and then affect its crushing process.In order to study the effect of moisture contained in coal on on the crushing behavior of coal particles,anthracite coal was used as the research object. A Hastelloy grinding equipped with a power measuring device was applied to simulate the crushing environment in a medium-speed coal mill. The individual and mixed crushing experiments were carried out in multi-time batches of coal samples with different water content. Thus, the effects of water occurrence on coal crushing rate, pulverized coal fineness, and grinding energy consumption were studied. The experimental results showed that compared with the original coal samples, the initial particle size material crushing rate of homogenized soaked coal samples decreases significantly due to the increase of water content, its grindability index first decreased and then increased with increasing the water content when the homogenized immersed coal sample was crushed separately, and the fineness of pulverized coal t10 was positively correlated with water content. When dry and wet coal samples were mixed and crushed, the crushing rate and fine-grained material generation rate of 13.34% moisture content samples were much higher than that of homogenized soaked coal samples with the same moisture content, and their its grindability index was larger than that of the original coal; The grindability index of the blended coal samples with other moisture contents was slightly smaller than that of the homogenized soaked coal samples, and this difference became larger with the increase of moisture content, while the crushing rate and the yield of fine-grained materials differed less from that of the homogenized impregnated coal samples. Also, the result indicated that the classical energy-particle size relationship model may be used to characterize the individual and mixed crushing processes of samples with different moisture gradients. The internal and external moisture reduced the ability of anthracite to resist crushing to varying degrees, and increasing the water content during separate crushing improved the energy efficiency significantly. So, the water content parameters were introduced into the energy consumption model to characterize the crushing process of various moisture coal samples. By exploring the influence mechanism of water content in coal on energy consumption of coal crushing, it reveals the way of energy loss in the process of coal crushing and provides theoretical guidance for optimizing coal crushing process and reducing energy consumption.
[1] |
李伟,钟艺,郭敬杰,等. 不同类型煤颗粒侧限压缩变形破碎特性试验研究[J]. 煤炭科学技术,2022,50(2):163−170.
LI Wei,ZHONG Yi,GUO Jingjie,et al. Experimental study on confined compression deformation and breakage characteristics for different types of coal particles[J]. Coal Science and Technology,2022,50(2):163−170.
|
[2] |
王越. 煤可磨性的预测模型及影响因素研究进展[J]. 煤质技术,2022,37(4):37−42.
WANG Yue. Research on the prediction model and influencing factor of coal grindabilty[J]. Coal Quality Technology,2022,37(4):37−42.
|
[3] |
王存宝,白利洲,王慧芳. 浅谈样品破碎方式对哈氏可磨指数的影响[J]. 内蒙古煤炭经济,2019(10):25−26,36.
WANG Cunbao,BAI Lizhou,WANG Huifang. The influence of sample breaking mode on Hamiltonian grindability index[J]. Inner Mongolia Coal Economy,2019(10):25−26,36.
|
[4] |
孟夏娟. 分析煤的哈氏可磨性指数测定影响因素[J]. 当代化工研究,2019(5):182−183. doi: 10.3969/j.issn.1672-8114.2019.05.117
MENG Xiajuan. Analysis of the influencing factors on the determination of Harrington grindability index of coal[J]. Modern Chemical Research,2019(5):182−183. doi: 10.3969/j.issn.1672-8114.2019.05.117
|
[5] |
薛永妍,薛玲芳,张小平. 煤的哈氏可磨性指数测定的影响因素及对策措施[J]. 山西化工,2020,40(5):81−83,93.
XUE Yongyan,XUE Lingfang,ZHANG Xiaoping. Influencing factors and countermeasures for determination of Hardgrove grindability index of coal[J]. Shanxi Chemical Industry,2020,40(5):81−83,93.
|
[6] |
胡卿,周建忠,徐爱民,等. 不同烘干温度下褐煤可磨性指数研究[J]. 选煤技术,2022,50(1):34−37.
HU Qing,ZHOU Jianzhong,XU Aimin,et al. Study on grindability index of lignite at different drying temperatures[J]. Coal Preparation Technology,2022,50(1):34−37.
|
[7] |
巢美林,程启国. 煤的水分与煤可磨性的关系分析[J]. 燃料与化工,2018,49(5):12−13,17.
CHAO Meilin,CHENG Qiguo. The correlation between coal moisture and its grindability[J]. Fuel & Chemical Processes,2018,49(5):12−13,17.
|
[8] |
吴任超,何亚群,谢卫宁,等. 低变质煤的密度与粒度对可磨性和能耗的影响[J]. 煤炭科学技术,2011,39(8):118−120,117.
WU Renchao,HE Yaqun,XIE Weining,et al. Density and particle size of low metamorphic coal affected to grindability and energy consumption[J]. Coal Science and Technology,2011,39(8):118−120,117.
|
[9] |
邸传耕,王振飞,张建良,等. 神东烟煤水分对其高炉喷吹性能的影响[J]. 中国冶金,2020,30(1):26−31.
DI Chuangeng,WANG Zhenfei,ZHANG Jianliang,et al. Effect of moisture of Shendong bituminous coal on its blast furnace injection performance[J]. China Metallurgy,2020,30(1):26−31.
|
[10] |
陈亚飞. 高炉喷吹用大淑村矿无烟煤粒度的优化研究[J]. 煤炭科学技术,2008,36(8):1−3,21.
CHEN Yafei. Optimized research on particle size of Dashucun Mine anthracite for blast furnace injection[J]. Coal Science and Technology,2008,36(8):1−3,21.
|
[11] |
VUTHALURU H B,BROOKE R J,ZHANG D K,et al. Effects of moisture and coal blending on Hardgrove Grindability Index of Western Australian coal[J]. Fuel Processing Technology,2003,81(1):67−76. doi: 10.1016/S0378-3820(03)00044-4
|
[12] |
施瑞盟,张龙,邹冲,等. 兰炭和喷吹煤组成与结构特征对可磨性的影响[J]. 钢铁,2020,55(8):86−92,159.
SHI Ruimeng,ZHANG Long,ZOU Chong,et al. Effect of composition and structural characteristics of char and injected coal on grindability[J]. Iron & Steel,2020,55(8):86−92,159.
|
[13] |
张骁博,赵虹,杨建国. 混煤粉碎特性及哈氏可磨性指数的影响因素研究[J]. 动力工程学报,2011,31(4):253−256,272.
ZHANG Xiaobo,ZHAO Hong,YANG Jianguo. Analysis on factors influencing HGI and crushing behaviors of blended coals[J]. Journal of Chinese Society of Power Engineering,2011,31(4):253−256,272.
|
[14] |
李子文,周志成,索永建. 混煤可磨性指数(HGI)可加性研究[J]. 洁净煤技术,2013,19(4):37−40.
LI Ziwen,ZHOU Zhicheng,SUO Yongjian. Additivity of mixed coal grindability index[J]. Clean Coal Technology,2013,19(4):37−40.
|
[15] |
李荣鹏,张建良,王广伟. 兰炭配煤可磨性规律及粒度分布研究[J]. 冶金能源,2017,36(6):21−25.
LI Rongpeng,ZHANG Jianliang,WANG Guangwei. Study on the grinding behavior and particle size distribution of semi-coke blending coal[J]. Energy for Metallurgical Industry,2017,36(6):21−25.
|
[16] |
李雄飞,鄢晓忠,陈文,等. 配煤比例对混煤可磨性及磨损性影响的试验研究[J]. 湖南电力,2020,40(3):1−4,22.
LI Xiongfei,YAN Xiaozhong,CHEN Wen,et al. Experimental study about effect of blending proportion on grindability and wearing of the mixed coal[J]. Hunan Electric Power,2020,40(3):1−4,22.
|
[17] |
XIE W N,LU Q C,HE Y Q,et al. Discussion on the quantification of components in heterogeneous breakage of coals[J]. Fuel,2020,269:117444. doi: 10.1016/j.fuel.2020.117444
|
[18] |
DUAN J,LU Q C,ZHAO Z Y,et al. Grinding behaviors of components in heterogeneous breakage of coals of different ash contents in a ball-and-race mill[J]. Minerals,2020,10(3):230. doi: 10.3390/min10030230
|
[19] |
LU Q C,XIE W N,ZHANG F B,et al. Energy-size reduction of mixtures of anthracite and coking coal in Hardgrove mill[J]. Fuel,2020,264:116829. doi: 10.1016/j.fuel.2019.116829
|
[20] |
张宇新,谢卫宁,姜海迪,等. 可磨性指数对煤炭混合破碎过程影响的试验研究[J]. 煤炭学报,2022,47(5):2088−2095.
ZHANG Yuxin,XIE Weining,JIANG Haidi,et al. Experimental investigation on the influence of hardgrove grindability index on the heterogeneous grinding of coal mixture[J]. Journal of China Coal Society,2022,47(5):2088−2095.
|
[21] |
袁军伟,常铎. 无烟煤和焦煤液氮冻融循环致裂效果对比试验[J]. 煤炭科学技术,2020,48(12):141−147.
YUAN Junwei,CHANG Duo. Contrast test of liquid nitrogen freeze-thaw cycle cracking effect between anthracite and coking coal[J]. Coal Science and Technology,2020,48(12):141−147.
|
[22] |
YANG Y,HE Y Q,BI X T,et al. Effect of moisture on energy-size reduction of lignite coal in Hardgrove mill[J]. Fuel,2020,270:117477. doi: 10.1016/j.fuel.2020.117477
|
[23] |
杨晓毓,姜英,邵徇. 干燥强度对褐煤孔隙结构及水分复吸的影响[J]. 煤炭科学技术,2014,42(4):109−112,125.
YANG Xiaoyu,JIANG Ying,SHAO Xun. Drying intensity affected to pore structure and water re-adsorption in lignite[J]. Coal Science and Technology,2014,42(4):109−112,125.
|
[24] |
REN Q Q,ZHANG Y F,ARAUZO I,et al. Roles of moisture and cyclic loading in microstructures and their effects on mechanical properties for typical Chinese bituminous coals[J]. Fuel,2021,293:120408. doi: 10.1016/j.fuel.2021.120408
|
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