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对从一些选煤厂尾煤中回收无烟煤的可能性进行了实验室试验。试验包括可洗性分析,旋流器模拟试验和泡沫浮选试验。试样采自五座选煤厂的尾煤流或煤泥池,对每个样品都进行了28目-100目和100目-200目两个级别的可洗性分析,根据可洗性资料,参数文献公布的分配曲线资料,用不同段数的水力旋流器和重介质旋流器对28目-100目级进行了模拟试验。用浮选对三个矿样的28目-100目及100目-200目两个级别进行了试验。可洗性分析,旋流器模拟及浮选试验结果以品位-产率曲线表示。
A laboratory test was conducted on the possibility of recovering anthracite from the tailings of some coal preparation plants. Tests include washability analysis, cyclone simulation tests and froth flotation tests. The samples were taken from the tailings stream or slime pond of five coal preparation plants. The two samples of 28 mesh -100 mesh and 100 mesh -200 mesh for each sample were analyzed for washability. According to the washability data , The distribution curve data published in the parameter literature, and simulated with a hydrocyclone of different number of stages and a heavy medium cyclone on the 28th to the 100th stages. Flotation of three samples of 28 mesh -100 mesh and 100 mesh -200 mesh two levels were tested. Washability analysis, hydrocyclone simulation and flotation test results are presented as grade-yield curves.