Beneficiation of Fine Coal Tailings From Coal Preparation Plant by Enhanced Gravity Methods
Abstract
In the past, it was
more economical to dispose fine coal without utilization. Nowadays,
beneficiation of fine coal is a necessity due to increasing costs of mining,
tailings disposal and storage problems. This research contains experimental
studies devoted to beneficiation of <0.1 mm coal preparation plant tailings
of Garp Lignite Enterprises (Tunçbilek- Kütahya/Turkey). It was found from the
characterization studies that the coal tailings include clay minerals
(kaolinite, mica/illite, and smectite group), quartz, siderite, pyrite and
dolomite which are of higher density than lignite coal. Concentration processes
are proposed as preliminary and final processing. In the preliminary two-stage
processing tests, hydrocyclone is used to separate clay minerals associated
with coal. For this purpose, structural and operating parameters of
hydrocyclone (hydrocyclone diameter, vortex diameter, apex diameter, feed inlet
pressure, pulp solids ratio) and of Falcon concentrator (gravity force, feed
rate, pulp solid ratio and wash water pressure) are optimized, and their
influences on separation efficiency were discussed. Under optimum opened flowsheet, the fine clean
coal concentrate assay was 35.66% ash and 1.63% total sulfur at a recovery of
34.60%.
Keywords
References
- Prof. Dr. Mehmet YILDIRIM Çukurova University Department of Mining Engineering (Mineral Processing) e-mail: mehyil@cukurova.edu.tr
- Prof. Dr. Hüseyin KOCA Anadolu University Porsuk Vocaional High School e-mail: hkoca@anadolu.edu.tr
- Prof. Dr. İlgin KURŞUN İstanbul University Department of Mining Engineering (Mineral Processing) e-mail: ilginkur@istanbul.edu.tr
Details
Primary Language
English
Subjects
Engineering , Environmental Engineering
Journal Section
Research Article
Publication Date
June 30, 2018
Submission Date
November 13, 2017
Acceptance Date
April 9, 2018
Published in Issue
Year 2018 Volume: 21 Number: 2