基于单位发热量计价体系下选煤厂经济效益评价方法及应用

Evaluation method and application of economic benefits of coal preparation plant based on unit calorific value system

为了解决选煤厂经济效益评价无法直接反映中间产物与经济效益的关系且计算过程长的问题,从选煤厂经济效益计算的基本公式出发,基于单位发热量的计价体系,结合选煤厂生产实际,推导总结出矸石产率、运输成本以及商品煤水分增加之间关系公式,当矸石产率高于某数值时,通常入选具有经济效益,从而简化对生产组织方式的经济效益评价的过程,节约了大量人力物力。根据乌兰木伦选煤厂实际统计数据与计算数据对比,该经济效益评价方法切实有效,能够指导选煤厂的生产组织调整。

In order to solve the problem that the economic benefit evaluation of coal preparation plant can not directly reflect the relationship between intermediate products and economic benefits and the calculation process is long,this paper started from the basic formula of the economic benefit calculation of coal selection plant,based on the unit calorific pricing system,and combines the production practice of coal selection plant.The formula for the relationship between the yield of gangue,the cost of transportation,and the increase in the moisture content of commercial coal was deduced and summarized.When the yield of gangue was higher than a certain value,multiple washing was economical.The process of economic evaluation of the production organization method was simplified to save a lot of manpower and material resources.According to the comparison of actual statistics and calculation data of Wulanmulun Coal Preparation Plant,The economic benefit evaluation method is effective and can guide the adjustment of production organization of coal preparation plant.