Abstract

The flotation conditions for coal with different mineral content of the organic component are studied in the laboratory. The reagent protocol developed, which includes Sinterol modifier, is industrially tested. The results indicate that, if Sinterol is added at a rate of (1.0–3.0) ×10^–3 kg/t of coal fines, the extraction of the coal’s combustible mass in the concentrate is increased; the process is more selective; and the loss of combustible mass with the flotation waste is decreased. The greater effectiveness of flotation when using Sinterol may be explained in that the modifier is adsorbed on the active sections of the coal surface, on account of hydrogen bonds with polar groups in the Sinterol, so that its hydrocarbon groups face the aqueous phase. As a result, the coal surface becomes more hydrophobic and flotation is improved. The increased selectivity in flotation is associated with effective flocculation of the clay particles in the presence of Sinterol, especially for coal with high content of clay minerals. Industrial tests confirm that Sinterol permits more effective and selective coal flotation.

中文翻译：

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OOO MMK-Ugol浮选中的Sinterol试剂测试

摘要

在实验室中研究了具有不同矿物含量的有机成分的煤的浮选条件。所开发的试剂方案（包括Sinterol改性剂）已经过工业测试。结果表明，如果以（1.0–3.0）×10 ^–3的比例添加Sinterol千克粉煤粉，增加了精矿中煤可燃物的提取；该过程更具选择性；减少了浮选废料可燃物的损失。使用Sinterol时浮选的更大效力可以解释为，由于Sinterol中具有极性基团的氢键使改性剂吸附在煤表面的活性部分上，因此其烃基面向水相。结果，煤表面变得更疏水并且浮选得到改善。浮选选择性的提高与在Sinterol存在下粘土颗粒的有效絮凝有关，尤其是对于粘土矿物含量高的煤而言。工业测试证实，Sinterol可以使煤浮选更加有效和选择性。