Research On Pressure-Energy Model And State Analysis Of Roller Press

Roller press,as a kind high-efficiency and energy-saving equipment, has been widely applied in cement industry, and is extending to the domain of metal ore mining and beneficiation, the industrialization and series trend will be formed for its tremendous development potential, become the preferred equipment of grinding.Roller Press is developed which based on the theory of high-pressure comminution for material-beds, the roller size and operating parameters are very important factors which determining the grinding performance and energy efficiency of roller press. In order to solve the problem how to design the size of roller press's components and optimize the energy-saving technology further, this article made three-dimensional modelling of roller press's parts, and assembled them.Through the analysis of roller press's work process, calculated the conditions which the roller can bite the granular materials. And then took a simulation of work process of roller press with EDEM, with changing of the radio between the diameter of roller and particles, observed the process of feeding particles, analyzed the force of roller, finally obtained the optimal ratio between the diameter of roller and particles.Based on the experiment of uniaxial compression, analyzed the process of high-press comminution for material-beds of roller press, deduced the formula of force of roller, driving torque, productivity and power, obtained the pressure-energy model which reflect energy consumption by the parameters of roller press.And then simulated the pressure-energy model further with the software Matlab, so as to get the relation between the parameters and energy comsumption.Developed software named roller press self-diagnosis system. By detecting the parameters of the roller press and calculating the energy coefficient, this system could show the curve of the energy coefficient and monitor the changing of energy which could give an advice how to practice to achieve the effect of energy saving. This system also could predict machine malfunction by detecting the running of roller press's parts based on the theory of variable pricing model,so that the operators could keep roller press in repair.