Research On Optimization Of Inter-particle Breakage Crushing Chamber And Process Parameters Of Cone Crusher

Cone crusher is one of the key equipment for particle material crushing with applications in mining,construction,chemical industry,metallurgy,etc.However,due to the lack of further study on the performance of cone crusher,the existing cone crusher is often designed to achieve one of the satisfactory technical indicators,and unable to obtain excellent comprehensive performance including the crushing performance,the product quality and the chamber liner wear,which results in low efficiency and effectiveness in the process of material crushing.Therefore,it is necessary to analyze the particle material movement characteristics in the crushing chamber of cone crusher,study the mechanism of inter-particle breakage behavior,investigate the wear law of the crushing liner,establish a multi-objective programming model for cone crusher to obtain excellent comprehensive performance,and lays a theoretical foundation for the development of cone crusher with independent intellectual property rights and high energy,inter-particle breakage and constant wear characteristic,which is of important theoretical significance and practical value.By analyzing the motion characteristics of the mantle in the cone crusher,the influence of compound rotation of the mantle on the falling behavior of particle materials in the crushing chamber was studied and the movement characteristics of particle materials in cone crusher considering the compound motion of mantle were studied.The movement characteristics of materials in the chock level were investigated.In order to provide theoretical support for crushing performance improvement of cone crusher,a productivity model of higher accuracy for cone crusher was established.In order to describe the inter-particle breakage behavior accurately,the inter-particle breakage of particle materials in the crushing chamber was investigated by simulation test.The relative coefficient of particle size was introduced to describe the difference of the crushing behavior of particle materials with different particle sizes.A particle shape transformation function was proposed to explain the shape transformation behavior between the cubic and the flaky particle materials during crushing.The operation model of inter-particle breakage was established,and the dynamic crushing process of particle materials in the crushing chamber of cone crusher were simulated numerically,and both the particle size distribution and the crushing product shape were predicted,which provided the theoretical basis for the crushing product quality improvement.Through the pressure test of inter-particle breakage behavior,the characteristics of crushing pressure of particle materials in the crushing chamber of cone crusher were studied.The distribution of crushing pressure on the liner surface in the crushing chamber of cone crusher was analyzed.A wear model of the crushing chamber liner in the cone crusher was established.Based on this model,a constant wear principle was proposed to design the crushing chamber liner in the cone crusher.The influence of liner wear and deformation on the crushing product quality of cone crusher was reduced and a theoretical support for prolonging the service life of crushing chamber liner in the cone crusher was provided.Based on the productivity model of cone crusher,the operating model of inter-particle breakage and the constant wear design principle for the crushing liner,a multi-objective programming model of cone crusher performance was established.The design variables and constraints were determined according to the structural and process parameters of cone crusher,and the multi-objective programming model was solved by the sequential quadratic programming method.Based on the above research,the performance of a cone crusher employed in one mining company located in Tangshan was optimized.The optimized crushing liner and process parameters of this cone crusher were put into operation online,and the productivity of the improved cone crusher was increased by 16.9%.