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细粒物料的处理不可避免地要产生矿泥,这就提出了脱水的问题,重力浓缩能够部分地或初步地解决这个问题。本文阐明了在进行确定浓缩机尺寸的实验室试验中一些实际因素的影响。以处理轻微凝聚的磷酸盐矿浆和高度絮凝高岭土矿浆为例,对确定浓缩机单位面积的几种方法进行了比较。混合和添加絮凝剂对分批沉降特性有重大的影响。矿浆温度和量筒大小也是很重要的。讨论了处理高度絮凝的矿浆时采用标准方法确定浓缩机尺寸所产生的误差。这些方法对于压缩性小的矿泥是合适的。最后给出选择絮凝剂的经验方法。
The treatment of fine-grained material inevitably leads to the production of sludge, which raises the issue of dehydration, which can partially or primarily solve this problem. This article illustrates some of the practical aspects of conducting laboratory tests to determine the thickener size. Taking the treatment of slightly agglomerated phosphate pulp and highly flocculated kaolin pulp as an example, several methods for determining the thickener unit area were compared. Mixing and adding flocculants have a significant impact on batch settling behavior. Pulp temperature and cylinder size are also important. The error of determining the size of a thickener using standard methods when processing highly flocculated slurries is discussed. These methods are suitable for slime with low compressibility. Finally, the empirical method of selecting flocculant is given.