Koca Huseyin, Aksoy Derya Oz, Ucar Reyhan, Koca Sabiha
a Porsuk Technical College, Anadolu University , Eskisehir , Turkey.
b Mining Engineering Department , Eskisehir Osmangazi University , Eskisehir , Turkey.
Environ Technol. 2017 Jul;38(13-14):1673-1678. doi: 10.1080/09593330.2016.1269835. Epub 2017 Jan 3.
In this study, solid wastes taken from Seyitomer coal-fired power plant bottom ashes were subjected to experimental research to obtain a carbon-rich fraction. The possible recycling opportunities of remaining inorganic fraction in the cement and concrete industry was also investigated. Flotation technique was used to separate unburned carbon from inorganic bottom ashes. Collector type, collector, dispersant and frother amounts, and pulp density are the most important variables in the flotation technique. A number of flotation collectors were tested in the experiments including new era flotation reactives. Optimum collector, dispersant and frother dosages as well as optimum pulp density were also determined. After experimental work, an inorganic fraction was obtained, which included 5.41% unburned carbon with 81.56% weight yield. These properties meets the industrial specifications for the cement and concrete industry. The carbon content of the concentrate fraction, obtained in the same experiment, was enhanced to 49.82%. This fraction accounts for 18.44% of the total amount and can be mixed to the power plant fuel. Therefore total amount of the solid waste can possibly be recycled according to experimental results.
在本研究中，对取自塞伊托梅尔燃煤电厂底灰的固体废物进行了实验研究，以获得富含碳的部分。还研究了剩余无机部分在水泥和混凝土行业的可能回收机会。采用浮选技术从无机底灰中分离未燃碳。捕收剂类型、捕收剂、分散剂和起泡剂用量以及矿浆浓度是浮选技术中最重要的变量。在实验中测试了多种浮选捕收剂，包括新型浮选活性剂。还确定了最佳捕收剂、分散剂和起泡剂用量以及最佳矿浆浓度。经过实验工作，获得了一种无机部分，其含有5.41%的未燃碳，重量产率为81.56%。这些特性符合水泥和混凝土行业的工业规范。在同一实验中获得的精矿部分的碳含量提高到了49.82%。该部分占总量的18.44%，可混入电厂燃料中。因此，根据实验结果，固体废物总量有可能得到回收利用。
