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离散元法在矿石破碎中的应用研究进展OACSTPCD

Application Research Status of Discrete Element Method in Ore Crushing

中文摘要英文摘要

离散元法(Discrete Element Method,DEM)是一种非连续介质力学数值计算方法,已被广泛应用于矿物加工破碎过程的研究,用于分析和求解离散系统中颗粒的运动规律、碰撞和破碎特性,为研究矿物的破碎机理、优化破碎设备的工作参数和机械结构提供了重要的理论研究手段.介绍了离散元法数值模拟技术中两种用于模拟矿物颗粒破碎的仿真模型:键合粒子模型(Bonded Particle Model,BPM)和颗粒替换模型(Particle Replacement Model,PRM),并对两种模型的基本原理、模型缺陷、优化进展及应用进行了概述,综述了利用DEM研究圆锥破碎机、颚式破碎机、冲击式破碎机、反击式破碎机等各类破碎设备在不同矿物特性、设备结构以及工作参数影响下的破碎性能表现的研究进展,讨论了DEM在碎矿研究领域存在的优势及局限性,并提出了基于DEM研究矿物破碎问题的发展方向.

Discrete Element Method(DEM)is a numerical method of discontinuous media mechanics,which has been widely used in the study of mineral processing and crushing process,and is used to analyze and solve the motion law,collision and crushing characteristics of particles in the discrete system.It provides an important theoretical research method for studying the crushing mechanism of minerals and optimizing the working parameters and mechanical structure of crushing equipment.This paper introduces two kinds of simulation models for simulating mineral particle breakage in discrete element numerical simulation technology:Bonded Particle Model(BPM)and Particle Replacement Model(PRM),and the basic principle,model defects,optimization progress and application of the two models are summarized.The research progress of cone crusher,jaw crusher,impact crusher and impact crusher under the influence of different mineral properties,structures and working parameters is reviewed.The advantages and limitations of DEM in ore crushing are discussed,and the development direction of mineral crushing research based on DEM is put forward.

谢存黎;田小松;王飞旺;梁泽跃;杨斌;戴惠新

昆明理工大学 国土资源工程学院,云南 昆明 650093昆明理工大学 国土资源工程学院,云南 昆明 650093||云南迪庆有色金属有限责任公司,云南 迪庆 674400云南迪庆有色金属有限责任公司,云南 迪庆 674400

矿山工程

离散元法键合粒子模型颗粒替换模型破碎设备破碎特性

DEMbonded particle modelparticle replacement modelcrushing equipmentcrushing characteristic

《矿产保护与利用》 2024 (001)

126-134 / 9

国家自然科学基金项目(52364033)

10.13779/j.cnki.issn1001-0076.2024.01.015

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