| Grinding is widely used in many departments,such as metallurgical in dustry,chemical industry, cement plant, ceramic industry, architectural industry, power industry, medical industry, national defence department and so on.Especially in the mineral processing plant of metallurgical industry, it is more important. The capital construction investment and the production cost of grinding have high proportion in the mineral processing plant.The quality of grinding production can produce a great impact on the following separation process.So,it is very important for improving the technical and economic targets of mineral process to enhance the grinding process and the grinding eficiency.Ball mill is one of most important and major equipments in mineral processing.That whether its eficiency is good or not not only determine the yield of dressing plant,but also have a great deal with the product of the recovery and grade with dressing plant's concentration.Though ball mill has been used over one hundred year in mineral processing, its principle of operation is still not very clear. Many experiences and common sense was acquired by using ball mill.Law of movment of ball mill's media and the consumption of ball mill and mathematical model of grinding have acquired to some extent evolution,but there is not a breakthrough evolution why ball mill is high power consumption and low efficiency.The purpose of metalore grinding is to liberate minerals.In the ore grinding operation,the diameters of loaded media balls and their proportions in ball mill and the methods of adding balls not only determine the quality of the product,but also have a great deal to do with the grinding efficiency and productivity,separation indices, the electricity and steel consumption. Thus studying on ball-load-addition methods in ore grinding are of great importance.To summarize and analyse the research have acquired by predecessors in ball mill,Especially,the relation between ball mill and grinding media. It is necessary to research and construct ball-load-addition method with ball mill assessment index system for people who want to study law of movment of ball mill's media.Ball-load-addition method is acomprehensive and complicated issue.And it is acomprehensive estimate of ball mill working condition and media working condition.Research on ball-load-addition method with system approachs still didn't report through document consulting.Many research on ball-load-addition method is only part of it.Therefore, it is full of challenge to research on ball-load-addition method with system approachs.This dissertation is devoted to the study of ball-load-addition method. Starting with the definition and the characteristics of ball mill's ball-load-addition with document from native and abroad. This dissertation analyse the factors of ball mill in detail.Using the theoretical conception of the research and principles of index design and the experiences of various standardized assessment scales, which have both reliability and validity for reference.we establishes ball-load-addition method assessment index system for ball mill in the present dissertation.This index system can be used widely to quantitate,describe and analyze ball mill working condition and ball-load-addition method.Accurate ball-load-addition method is invent by professor Duan Xi-Xiang from Kunming University of Science and Technology.lt was Widely used in many dressing plants in Yunnan Province and got good effect. This dissertation analyse and summarize accurate ball-load-addition method with ball-load-addition method assessment index system for ball mill.Further more, This dissertation expand accurate ball-load-addition method to a certain extent.With the rapid development of modern computer science, Which make software development become easy and feasible by ordinary people. This dissertation contrast serveral software development tools and select Delphi 6.0 as the development tools of accurate ball-load-addition method software. Accurate ball-load-addition method software was apply to a dressing plant's crush and grinding system to calculate the ball-load-addition of ball mill. This dissertation pay attention to the quantification,index design and comprehensive assessment of ball-load-addition method'research and the development of accurate ball-load-addition method software.The main content of research of the dissertation are the following:1). The dissertation make a thorough account of the relative theories on role & function of grinding and ball mill.From this, dissertation bring forth research background,research content, total framework and significance. This dissertation analyse the research evolution of ball-load-addition method and ball media by consulting documents.Finally, dissertation discuss the enlightment and experience of documents to the ball-load-addition method and set dissertation research objective and research plan.2). The dissertation set out from the optimization of grinding, discussing the ball mill working condition and ball media research evolution which has great significance to establish ball-load-addition method assessment index system.After defining the conception and analysing the influencing factor of ball-load-addition method,the dissertation establish the theoretical model to ball-load-addition method in a general way.3). The dissertation analyse profoundly how to define,assess,quantitate, the assessment factors of ball-load-addition method.These factors includes law of ball wear, quantity of fisrt ball load,the size of ball, proportions of ball, and way of addition ball.According to the factor, dissertation establish initial anthology of ball mill's ball-load-addition method4).According to the ball mill's ball-load-addition method'assessment index system, this dissertation analyse the superiority of accurate ball-load-addition method in detail at size of ball,way of addition ball and proportion of addition.Dissertation also expand analysis accurate ball-load-addition method with ball mill's ball-load-addition method assessment index system in the calculating way of reasonable load ball quantity and proportion of addition ball.5). The dissertation choose mainstream software development tool Delphi 6.0 which combines object-oriented technology with component technology as accurate ball-load-addition method software development tool after analysing modern software development theory and technology in detail.According to software development flow,we develop accurate ball-load-addition method software system by analysis, desgining,coding and testing.6).To meet scientific research projects pratice need,the dissertation apply accurate ball-load-addition method software to XingFa dressing plants Yunnan HuanLian Zinc & Indium Company with its crush system to calculate ball mill ball-load-addition. The research results indicated that all of four contrast scheme, the scheme calculated by software is the best.It can be used to guide production activity.It also indicated that accurate ball-load-addition method software can replace some of test research in laboratory room and save the amount of grinding work.7).At last we sum up the main points of the dissertation and creativity of the dissertation,discuss some key problems to work out about ball-load-addition method.
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