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Effect of the grinding behaviour of coal blends on coal utilisation for combustion

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Nov 1999 Spain Publisher:Elsevier BVJournal:Powder Technology, volume 105, pages 351-356 (issn: 0032-5910,

Authors: Rubiera González, Fernando; Arenillas de la Puente, Ana; Fuente Alonso, Enrique; Miles, N.; Pis Martínez, José Juan;

doi: 10.1016/s0032-5910(99)00158-8

handle: 10261/103382

Effect of the grinding behaviour of coal blends on coal utilisation for combustion

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Abstract

Grinding of a high volatile bituminous coal was performed in three comminution devices: Raymond Mill (RM), Rolls Crusher (RC) and Ball Mill (BM). The pulverised samples were sieved to obtain four particle size fractions, and temperature-programmed combustion (TPC) was used for the evaluation of their combustion behaviour. In addition, three coals of different hardness and rank were mixed in various proportions in order to compare the combustibility characteristics of the binary coal blends with those of the individual coals. The effect of coal blending on grindability was also studied. It was found that grindability was non-additive especially when coals of very different Hardgrove Grindability Index (HGI) were blended. The combustion studies also suggested that there exists an interaction between individual coals when they are burnt as a blend. Work carried out with a financial grant from the European Coal and Steel Community (Project 7220-EA/133). Peer reviewed

Country

Spain

Related Organizations

Nottingham Trent University
United Kingdom
Instituto Nacional del Carbón
Spain
Spanish National Research Council
Spain

Keywords

Hardgrove Index, Combustion, Comminution, Coal blends

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