ABSTRACT

In coal washeries, a considerable amount of fine coal is sent to tailings ponds in Turkey as well as in the World. Fine coal in the tailings should be recovered due to its economic value and potentially harmful environmental effects. In the present study, aggloflotation was tested to recover fine coal from tailings of Tunçbilek coal washery in Turkey. The effects of conditioning time, flotation time, agitation rate, frother dosage, and particle size were investigated. A clean coal with 30.5% ash and 5198.9 kcal/kg calorific value was recovered at a 92.2% combustible recovery from washery tailings with 54.6% ash and 2720.7 kcal/kg calorific value. The results of the study were compared with a previous study undertaken by the same authors in which oil agglomeration was used. It was determined that aggloflotation was superior to oil agglomeration in this application.

摘要

在洗煤厂，相当数量的细煤被送往土耳其和世界各地的尾矿池。由于其经济价值和潜在的有害环境影响，尾矿中的细煤应该被回收。在本研究中，测试了附聚浮选从土耳其 Tunçbilek 洗煤厂的尾矿中回收细煤。研究了调节时间、浮选时间、搅拌速度、起泡剂用量和粒度的影响。以灰分54.6%、热值2720.7大卡/公斤的洗矿尾矿的可燃回收率为92.2%的条件下回收了灰分30.5%、热值5198.9大卡/公斤的精煤。该研究的结果与同一作者之前进行的使用油凝聚的研究进行了比较。