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金属矿山 ›› 2018, Vol. 47 ›› Issue (12): 167-170.

• 安全与环保 • 上一篇    下一篇

高深直溜井卸矿口产尘规律及防治技术研究

邹常富1,周东良2,许圣东1,于兆清2,张富兴2   

  1. 1. 中煤科工集团重庆研究院有限公司,重庆 400037;2. 招金矿业股份有限公司,山东 招远 265400
  • 出版日期:2018-12-15 发布日期:2019-01-17
  • 基金资助:

    基金项目:国家“十三五”科技重大专项(编号:2017YFC0805200)。

Study on Dust Production Rules and Prevention Technology at the Discharge Port of High-deep Straight Well

Zou Changfu1, Zhou Dongliang2,Xu Shengdong1,Yu Zhaoqing2,Zhang Fuxing2   

  1. 1. Chongqing Research institute of China Coal Technology & Engineering Group Corporation, Chongqing 400037, China;2. Zhaojin Mining Industry Co., Ltd.,Zhaoyuan 265400, China
  • Online:2018-12-15 Published:2019-01-17

摘要: 针对夏甸金矿高深直溜井卸矿口的产尘能力、含尘气流时空演化规律及粒度分布规律进行了分析。卸矿口逸散含尘气流中,10 μm粒径以上的粉尘占比为7%,而粒径在10 μm以下的粉尘占比93%,呼吸性粉尘占比高。基于现场的通风条件、卸矿口尺寸面积及产尘规律,采用fluent软件进行模拟,对比分析了密闭抽尘前后的含尘气流运动轨迹,提出了密闭抽尘净化的治理措施。治理后高深直溜井卸矿口逸散的总粉尘浓度由420 mg/m3降低至8.7 mg/m3,降尘效率达到了97%以上,有效地解决了高深直溜井卸矿口粉尘逸散污染问题。

关键词: 高深直溜井, 卸矿口, 产尘规律, 密闭抽尘, 降尘效率

Abstract: The dust production capacity, the dust air flow space-time evolution rules and the particle size distribution at discharge port in the high-deep straight well of Xiadian Gold Mine were analyzed. Among the dust-laden airflow at the discharge port, the proportion of dust with particle size above 10 μm is 7%, while the proportion of dust with particle size below 10 μm is about 93%, and the proportion of respirable dust is high. Based on the on-site ventilation conditions, the size and area of the discharge port and the rule of dust production, the Fluent software was used to simulate the movement track of dust-laden airflow before and after closed dust extraction, and the control measures of closed dust extraction and purification were put forward. After treatment, the total dust concentration at discharging port of the high-deep straight well was reduced from 420 mg/m3 to 8.7 mg/m3 with the dust reduction efficiency of over 97%. Thus, the problem of dust emission pollution at discharging port of the high-deep straight well can be effectively solved.

Key words: Deep straight well, Discharge side, Dust production, Closed dust collection, Dust reduction efficiency