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苏联选矿专家蓝德格拉夫同志在1951年10月就对这第一稀有金属矿提出了应编好选矿平均先进曲线图的建议,他说“选矿平均先进曲线图可以正确地回答一系列的问题,特别是决定选矿厂的计划指标,给予整个选矿厂各班的工作以正确的评价,进而决定处理矿石之技术和经济的最高效率”。这就是说对选矿厂给以正确评价或编制生产技术经济计划时,必须切实掌握选矿厂的主要指标,如原矿品位、精矿品位和採收率等。而正确掌握这些指标的唯一的科学方法,就是根据选矿厂的一年或一年以上的生产成绩,编好选矿平均先进曲线图。一、什么是选矿平均先进曲线图所谓选矿平均先进曲线就是由选矿厂每种指标中选择出较平均指标为高的那些指标予以加權平均所繪制的曲
In October 1951 Comrade Randall Graf, a beneficiation expert from the Soviet Union, put forward a proposal on the average advanced graph of mineral processing for this first rare metal mine. He said that "the average advanced mineral processing curve can correctly answer a series of questions , In particular, to determine the planning objectives of the beneficiation plant and to give correct evaluation of the work of the entire beneficiation plant so as to determine the technical and economic efficiency of the ore. This means that when the beneficiation plant is given a correct assessment or a production technical economic plan, it is necessary to effectively grasp the major indicators of the concentrator, such as the ore grade, concentrate grade and recovery ratio. The only scientific way to correctly grasp these indicators is to compile an average advanced graph of beneficiation according to the production results of a concentrator of one year or more. First, what is the average advanced mineral processing curve The so-called mineral processing average advanced curve is selected by the beneficiation plant each index higher than the average index of those indicators to be weighted average draw of the song