Microwave roasting of blast furnace slag for carbon dioxide mineralization and energy analysis.

ABSTRACT: For both the waste treatment of large quantities of blast furnace (BF) slag and carbon dioxide (CO₂) that are discharged in ironworks, mineral carbonation by BF slag was proposed in this decade. However, it has not been widely used due to its high energy consumption and low production efficiency. In this study, a microwave roasting method was employed to mineralize CO₂ with BF slag, and the process parameters for the sulfation and energy consumption were investigated. A mixture of BF slag and recyclable ammonium sulfate [(NH₄)₂SO₄] (mass ratio, 1 : 2) was roasted in a microwave tube furnace, and then leached with distilled water at a solid : liquid ratio of 1 : 3 (g mL^-1). Under the optimized experiment conditions (T

SUBMITTER: Han Z 

PROVIDER: S-EPMC9053635 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature