Influence of moisture and particle size on coal blend bulk density

• Autor(a) principal: Braga,Erick Mitchell Henrique
• Data de Publicação: 2019
• Outros Autores: Silva,Guilherme Liziero Ruggio da, Amaral,Rian Carlo Vieira, Carias,Marina do Carmo, Assis,Paulo Santos, Lemos,Leandro Rocha
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: REM - International Engineering Journal
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000300237
• topic: coal; bulk density; moisture; particle size

Abstract Coal blend bulk density is an important property in the coking process. Some variables, such as moisture and particle size, which are controlled or measured in the coal beneficiation process in steel mills, exert a strong influence on this feature. This study aims to understand the density variation of coal blends by the influence of moisture and particle size when using dry and wet bases. The investigations showed that higher density can be reached when drying the coal blend or even with excess of moisture by an agglomeration process. However, for a coal blend of lower moisture content, such as 4%, the better effects on the coking process are evident. Changes on the density from particle size require care, since they can fall in a region of high density achieved by larger particles or in a region with excess coal fines, where either or both can compromise the coke quality.