| With the deepening of the concept of green environmental protection in China,upgrading coal quality and increasing efficiency has become a key issue for production enterprises.For coal mining enterprises,how to strengthen the management of coal quality has become the key to saving production costs and enhancing enterprise performance.In view of the development background of Coal Mine Enterprises above,this paper takes coal preparation plant of Hujiahe coal mine as research object,and analyzes the problem of Hujiahe coal mine in coal selection link,which is not flexible,can not adapt to customer needs and low production management organization level,and uses lean management theory to study the problem of coal quality management in the Hujiahe coal mine cleaning link.First,based on the:lean management theory,the quality of Hujiahe coal mine products and the process of coal washing process are analyzed.The problems existing in the three aspects of the production process,quality management system and equipment management of Hujiahe coal mine mining lin,k are summarized,and the lean management system of coal quality for Hujiahe coal mine selection is put forward.Secondly,the problems of,inventory management,waiting link,test link and handling link in the coal quality management of Hujiahe coal mine mine are analyzed.At present,there are still some problems in the process of coal cleaning in Hujiahe coal m,ine,such as the unreasonable production process,the backward quality management system and the inadequate maintenance.Finally,based on the above problems,the coal quality management system is constructed based on the lean coal quality management system of Hujiahe coal mine selection,the comprehensive production equipment maintenance system,the lean cost control strategy and other coal quality management measures are constructed,thus realizing the refined management of the coal quality of the Hujiahe coal mine selection link,and effectively achieving the quality and efficiency.In this paper,the problems of coal quality management in Hujiahe coal mine washing process are comprehensively sorted out,and effective measures for coal quality management are put forward based on lean theory.It provides a reference for improving the management of coal quality in Hujiahe coal mine washing process,and also provides important reference value for other coal production enterprises to improve their own process of coal quality management. |