高浓缩尾矿分级筑坝工艺流程与设计方法  

Classification Damming Process and Design Method for High Concentration Tailin

作　　者：刘欣欣 盛明强 艾罗艳 燕琴 LIU Xinxin;SHENG Mingqiang;AI Luoyan;YAN Qin(School of Human Habitation and Environment,Nanchang Institute of Science and Technology,Nanchang 330108,China)

机构地区：[1]南昌工学院人居环境学院,江西南昌330108

出　　处：《金属矿山》2023年第9期199-205,共7页Metal Mine

基　　金：国家自然科学基金地区基金项目(编号:52169027,52069013)。

摘　　要：针对目前高浓缩尾矿筑坝过程中分级系统理论设计方法匮乏的现状,通过对分级筑坝计算相关的参量进行归纳分类,总结出了13项分坝系统设计的关键计算参数。基于理论分析,提出了建设工期、底流沉砂率和原矿分配率的理论计算公式,分析了基于分离粒度的水力旋流器选型和数量确定过程,阐述了选厂生产规模与筑坝施工效率之间的分配流程,推导了系统化的旋流分级工艺参数计算方法,并针对某高浓度排矿尾矿库筑坝工程实践,对所提计算方法的可行性和有效性进行了验证。结果表明:在入料尾矿浓度与计算设定值相近的情况下,底流尾矿、溢流尾矿浓度、沉砂产率和底流尾矿中-200目颗粒含量等指标的计算结果与现场监测数值吻合度较好。研究成果可为高浓度排矿尾矿库上游法筑坝施工提供理论与技术支撑。In view of the lack of theoretical design methods for the classification system in the damming process of high concentration tailings ponds,13 key calculation parameters for the design of classification system were summarized by classif-ying the relevant parameters.Based on theoretical analysis,the theoretical calculation formulas for construction period,sediment yields and distribution rate of original tailings were put forward,the selection and quantity determination process of hydrocy-clones based on separation particle size were analyzed,and the production scale of the dressing plant and the efficiency of dam construction were explained.A systematic calculation method of cyclone classification process parameters is derived,and the feasibility and effectiveness of the established calculation method are verified according to the construction practice of a high concentration discharge tailings pond.The results show that the calculation results of the underflow tailings,overflow tailings concentration,sediment yields,and the-200 mesh particle content in the underflow tailings are in good agreement with the mo-nitoring values when the feed tailings concentration is similar to the calculated set value.The research results can provide theo-retical and technical support for the upstream tailings dam construction of high concentration tailings ponds.

关 键 词：尾矿库 上游法筑坝 旋流分级 工艺流程 理论计算 

分 类 号：TD921[矿业工程—选矿]