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Calculate and Select Ball Mill Ball Size for Optimum Grinding

In Grinding, selecting calculate the correct or optimum ball size that allows for the best and optimum/ideal or target grind size to be achieved by your ball mill is an important thing for a Mineral Processing Engineer AKA Metallurgist to do Often, the ball used in ball mills is oversize just in case Well, this safety factor can cost you much in recovery and/or mill liner wear and ....

MODELING THE SPECIFIC GRINDING ENERGY AND BALL

21 CONCLUSIONS Continued In the present work, equations were also derived, giving zthe ball-mill power drawP as a function of its dimensions internal mill diameter D and length L, zthe ball-mill power drawP as a function of the feed D f mm and the product size d mm , the Bond work index w i kWh/short ton and the mill throughput T short ton/h , zthe ball-mill dimensions D and L , when ....

Design Method of Ball Mill by Sumitomo Chemical Co, Ltd ,

Design Method of Ball Mill by Discrete Element Method collected The diameter of the gibbsite powder was measured using a Master Sizer 2000 Sysmex Corpora-tion Details of the experimental conditions are given in Table 2 Results and Discussion 1 Effects of Fins on Ball Motion in the Mill To predict ball mill grinding behavior using the dis-...

Calculation of energy required for grinding in a ball mill ,

The Bond work index, W i, as an indicator of the grindability of raw materials is not a material constant but rather it changes with change of size of the grinding productTherefore, in practice we can expect some difficulties and errors when the energy consumption is determined according to this formula in the case when, for a given size of grinding product, the value of the work index W i ....

MODULE 5 FUNCTIONAL PERFOMANCE OF BALL MILLING

In a ball mill circuit, the output can be defined as the production rate of fines of the circuit As for any output, ball mill circuit output is a function of both its inputs and efficienci There are two inputs to a ball mill circuit the ore fed to the circuit and the power delivered by the grinding mill...

Grinding in Ball Mills Modeling and Process Control

Keywords Ball mills, grinding circuit, process control I Introduction Grinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical, mechanical and chemical characteristics Typical examples are the various ores, minerals, limestone, etc...

CALCULATION OF THE POWER DRAW OF DRY ,

of the Bond ball mill grindability test For all model based methods, a reliable method to calculate mill power draw for a given mill is required for the calculation of power draw Morrell 1996 proposed a mathematical model for autogenous, semi-autogenous and ball mills which is based on the motion of grinding charge inside the mill...

EFFECT OF BALL SIZE DISTRIBUTION ON MILLING PARAMETERS

431 Breakage rate as a function of ball size 55 432 Reduced selection function 56 44 Breakage distribution function 57 45 Significance of results Interpretation 60 46 Summary 61 Chapter 5 Effect of ball size distribution on milling kinetics 62 51 Introduction 62 52 Selection function of ball mixtures 63...