کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5469061 1519050 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Beneficiation and influencing factors of coal-series kaolin for the reduction of COD
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Beneficiation and influencing factors of coal-series kaolin for the reduction of COD
چکیده انگلیسی
Coal-series kaolin is the product of seam deposition in coal-accumulating basin. With the high content of reducing substances such as pyrite and fossil, the COD (chemical oxygen demand) can range from 5000 to 30,000 μg/g in coal-series kaolin, which is a serious disadvantage for the clarification of glass industry. Through reverse flotation, the COD has effectively enriched in flotation froth products, while the COD in flotation concentrate is 3533 μg/g, and can be reduced to 290 μg/g at 450 °C, which is only < 2% of the raw ore. The oxidizing roasting of flotation concentrate has great significance for the decreasing of COD in the coal-series kaolin. Pyrite would also have great influence on the reduction of COD, with a high degree of oxidation, COD decreases more significantly, and the content of pyrite shows linear correlation with COD, which would provide an approximate method to evaluate the COD in coal-series kaolin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 138, 15 March 2017, Pages 34-39
نویسندگان
, , , , ,