Effectiveness of the dense medium and the froth flotation methods in cleaning some Turkish lignites
Effectiveness of the dense medium and the froth flotation methods in cleaning some Turkish lignites
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DOI：
10.1016/j.enconman.2003.09.011
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发表时间：
2004-06-01
影响因子：
10.4
通讯作者：
Kücük, MZ
中科院分区：
文献类型：
--
作者：
Ceylan, K;Kücük, MZ
研究了用重介质分选法或泡沫浮选法精选三种土耳其褐煤（贝帕扎里、戈尔巴西和康加尔褐煤）的可行性。比重范围为1.1至1.75的氯化锌（ZnCl2）溶液已被用作稠密介质。在泡沫浮选的情况下，使用甲基异丁基甲醇（MIBC）、二乙基异己醇（DEH）和十二烷基磺酸钠（SIDS）作为起泡剂，使用煤油作为捕收剂。在这两种方法中，每个褐煤样品被分离成两个亚馏分：富含褐煤的部分和富含矿物质的部分。结果表明，对于不同的褐煤，各种方法的除灰和脱硫效果略有不同。重介质分选对贝帕扎里和戈尔巴西褐煤的黄铁矿硫脱除率达90%以上。泡沫浮选的有效性根据褐煤和起泡剂类型而相对不同。回收率通常较低，并且根据起泡剂类型和粒度而变化很大。(C)2003 Elsevier Ltd.保留所有权利。
The feasibility of cleaning three Turkish lignites (Beypazari, Golbasi and Kangal lignites) by the dense medium separation or the froth flotation method has been investigated. Solutions of zinc chloride (ZnCl2) with specific gravities ranging from 1.1 to 1.75 have been used as the dense medium. In the case of froth flotation, methyl isobutyl carbinol (MIBC), diethyl isohexanol (DEH) and sodium dodesyl sulphonate (SIDS) were used as the frother and kerosene was used as the collector. In both methods, each lignite sample was separated into two sub-fractions: the lignite rich part and the mineral matter rich part. The results indicate that the effectiveness of the methods in ash and sulphur removal is appreciably different for the different lignites. An effective pyritic sulphur removal (over 90%) was obtained for Beypazari or Golbasi lignites by the dense medium separation. The effectiveness of the froth flotation was relatively different depending on both the lignite and frother type. The recovery is generally low and changes considerably depending on the frother type and particle size. (C) 2003 Elsevier Ltd. All rights reserved.