为预计煤的可选性,曾采用过多种实验室方法进行试验,而应用最广的方法之一是过去多次报导过的“定时撇泡法”。报告中所介绍的煤样浮选试验数据绘制成灰分——产率关系曲线(见图1)。这些曲线表示,浮选条件由弱到强变化的6个泡沫产品的灰分与精煤产率之间的关系。 One of the most widely used methods for predicting coal selectivities has been the use of a variety of laboratory methods. One of the most widely used methods is the “time-lapse method” reported many times in the past. The coal-based flotation test data presented in the report is plotted as an ash-to-yield curve (see Figure 1). These curves show the relationship between the ash content and the yield of clean coal for the six foam products with weak to strong flotation conditions.