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重液变温法可以较精确测定矿物比重,精度可达0.001左右。测定时用样量小;并能将同种矿物的不同亚种矿物比重测出来;操作简单易行。下面以测定吉林硅灰石的比重为例,简要说明如下。一、重液的配制首先选择比重大于预测矿物的重液。硅灰石的理论比重值是2.78～2.91,为测定方便,我们首先配制比重大于2.91的2.93重液。利用图解法选择好重液配制的比例。
Heavy liquid temperature method can be more accurate determination of the proportion of minerals, the accuracy of up to about 0.001. Determination of the sample with a small amount; and the same kind of minerals can be measured in different subspecies minerals; easy to operate. Below to determine the proportion of Jilin wollastonite, a brief description is as follows. First, the preparation of heavy liquid First select the proportion of heavy fluid is greater than the predicted mineral. Wollastonite theoretical weight value is 2.78 ~ 2.91, for the convenience of measurement, we first preparation of 2.93 heavy liquid greater than 2.91. Use graphic method to choose the proportion of heavy liquid preparation.