| 基于尾砂沉降与流变特性的深锥浓密机压耙分析 |
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| 引用本文： | 李辉,王洪江,吴爱祥,焦华喆,刘晓辉. 基于尾砂沉降与流变特性的深锥浓密机压耙分析[J]. 工程科学学报, 2013, 35(12): 1553-1558. DOI: 10.13374/j.issn1001-053x.2013.12.007 |
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| 作者姓名： | 李辉 王洪江 吴爱祥 焦华喆 刘晓辉 |
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| 作者单位： | 1. 中色非洲矿业有限公司, 基特维 22592, 赞比亚; |
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| 基金项目： | 国家自然科学基金;长江学者;创新团队发展计划 |
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| 摘 要： | 采用深锥相似模型动态沉降实验及流变参数测定方法研究深锥浓密机压耙原因.结果发现造成深锥浓密机压耙一方面是由全尾砂进料浓度和絮凝剂添加量波动造成全尾砂絮凝沉降效果不佳而引起的;另一方面是间歇式充填排料引起深锥中料浆浓度分布差异性增强,进而导致料浆流变参数突变引起的.通过对深锥压耙机理的研究,为深锥正常运行及事故预测和排除提供理论依据.
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| 关 键 词： | 深锥浓密机 压耙 尾砂 流变学 |
| 收稿时间： | 2012-11-20 |
Pressure rake analysis of deep cone thickeners based on tailings' settlement and rheological characteristics |
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| Affiliation: | 1. Africa Mining Public Limited Company, China Nonferrous Metals Co. Ltd., Kitwe Zambia 22592, Zambia;2. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The reasons for the pressure rake of deep cone thickeners were studied On the basis of deep cone model dynamic settlement test and rheological parameters measurement. It is found that there are two reasons leading to the pressure rake of deep cone thickeners. The first is poor flocculation sedimentation caused by the fluctuations of incoming tailing concentration and flocculant dosage; and the second is the slurry's rheological parameters mutation resulting from the difference of deep cone slurry concentration distribution caused by intermittent filling discharge. This research on the pressure rake of deep cone thickeners can provide a theoretic basis for deep cone normal operation, accident forecasting and getting rid of accidents. |
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