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  5. 竖冷炉内烧结矿运动行为的离散元模拟

竖冷炉内烧结矿运动行为的离散元模拟

来源 :钢铁研究学报 | 被引量 : 0次 | 上传用户：babycat_hj
【摘 要】
：
利用离散单元法研究烧结矿竖冷炉在排料过程中颗粒运动的流型和速度分布.模拟结果表明,烧结矿颗粒在下移过程中,运动流型依次呈“一”→“S”→“V”转变;在竖冷炉腔内的大部分区域,烧结矿颗粒保持整体流动;在中心风帽上方的局部区域(宽480 mm,高1280 mm),运动流型会随排料的进行在整体流和漏斗流之间转变.烧结矿颗粒速度分布表明,在中心风帽上方会形成更大区域的(宽960 mm,高3200～3840 mm)梯形缓慢流动区.缓慢流动区内颗粒下移速度较小,冷却后的颗粒不能及时排出炉外,不利于气固换热效率的提高.
【作 者】
：
祁腾飞 黄军 孙俊杰 张永杰 
【机 构】
：
东北大学冶金学院,辽宁 沈阳 110819;内蒙古科技大学能源与环境学院,内蒙古 包头 014010;上海梅山钢铁股份有限公司技术中心,江苏 南京 210039;东北大学冶金学院,辽宁 沈阳 1108
【出 处】
：
钢铁研究学报
【发表日期】
：
2022年3期
【关键词】
：
烧结矿 竖冷炉 流型 速度分布 离散单元法 
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论文部分内容阅读
利用离散单元法研究烧结矿竖冷炉在排料过程中颗粒运动的流型和速度分布.模拟结果表明,烧结矿颗粒在下移过程中,运动流型依次呈“一”→“S”→“V”转变;在竖冷炉腔内的大部分区域,烧结矿颗粒保持整体流动;在中心风帽上方的局部区域(宽480 mm,高1280 mm),运动流型会随排料的进行在整体流和漏斗流之间转变.烧结矿颗粒速度分布表明,在中心风帽上方会形成更大区域的(宽960 mm,高3200～3840 mm)梯形缓慢流动区.缓慢流动区内颗粒下移速度较小,冷却后的颗粒不能及时排出炉外,不利于气固换热效率的提高.应采取措施减小炉内缓慢流动区的范围,以提高竖冷炉内颗粒流动的整体性.
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