Coal-Agglomeration Processes: A Review


Ozer M., Basha O. M. , Morsi B.

International Journal of Coal Preparation and Utilization, vol.37, no.3, pp.131-167, 2016 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Review
  • Volume: 37 Issue: 3
  • Publication Date: 2016
  • Doi Number: 10.1080/19392699.2016.1142443
  • Journal Name: International Journal of Coal Preparation and Utilization
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.131-167
  • Keywords: Coal agglomeration, wettability, hydrophobicity, coal rank, contact angle, SELECTIVE OIL AGGLOMERATION, FINES CLEANING WASTES, HIGH-RANK COALS, TURKISH BEYPAZARI LIGNITE, LOW-TEMPERATURE OXIDATION, CRITICAL SURFACE-TENSION, VEGETABLE-OILS, BITUMINOUS COAL, AIR OXIDATION, STRUCTURAL CHARACTERISTICS

Abstract

This article presents an extensive review of the coal-agglomeration process, including oil-agglomeration theory, characterization methods of coal hydrophobicity, and the main factors affecting the agglomeration-process performance in terms of combustible recovery and ash rejection. Coal rank and oxidation state, coal petrography and composition, coal-particle size, pulp density, and pH, bridging-liquid type and concentration, presence of surfactant and electrolytes, bridging-oil emulsification, and agitation intensity as well as time are among the factors here discussed. A chronological overview of the development and milestones of the coal-agglomeration processes is also provided.