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本文指出细粒煤泥浮选在选煤生产上的意义,并以一个厂的浮选工作为例对其中存在的问题加以阐述.扼要地概括浮选原料的性质与原煤的岩相组成的关系,特别是和工艺流程的关系.根据实际资料,对细粒煤泥浮选的特点归纳为:浮选速度快、浮游选择性低. 考虑到这些特点,文中采取以下措施以提高浮选的技术指标:1.采用较低的矿浆浓度以提高细粒级的分选效果;2.合理选择和使用浮选剂以适应各成分的可浮性;用分段加药的方法控制煤泥的浮选速度;3.改进浮选机械以符合上述过程的需要;4.在浮选操作上既要改进细粒煤泥的分选又要提高粗粒煤泥的回收.并以具体数字说明,该厂采取这些措施后,取得了好的效果.
This paper points out the significance of flotation of fine coal slime in coal preparation and expounds the existing problems in the flotation of a factory as an example.Chartly summarizes the relationship between the properties of flotation raw materials and the lithofacies composition of raw coal , Especially the relationship with the process.According to the actual data, the characteristics of flotation of fine coal slime are summarized as follows: flotation speed, low selectivity of planktonic.According to these characteristics, the article takes the following measures to improve the flotation technology Indicators: 1. The use of lower slurry concentration to improve the classification of fine-grained results; 2. Reasonable choice and use of flotation agent to adapt to the composition of floatability; with sub-dosing method to control the floating of slime Choose the speed; 3. Improve the flotation machinery to meet the needs of the above process; 4. In the flotation operation, it is necessary to improve the separation of fine slime and coarse coal slime recovery but also to specific figures that Factory to take these measures, achieved good results.