What is it about?
This work presents the flotation of a sub-bituminous coal using 1-butylamine as a short-chain amine collector. The flotation results have been obtained with 1-butylamine (coal yield: 100%) and compared with those achieved with a quaternary amine (coal yield: 95.4%), kerosene (coal yield: 100%) and diesel (coal yield: 95.7%). The best results have been obtained with 1-butylamine. Less depressant effect has been observed with 1-butylamine. The FTIR signals have been attenuated when the coal is conditioned with 1-butylamine. Zeta potential measurements have also been changed after conditioning. The contact angle of water and graphite has decreased from 82.3° to 32.2°. An optimization has been performed using a Box-Behnken experimental design. Flotation has significantly affected by time and collector dosage. The pH is not a significant factor. The optimal conditions for the best efficiency using 1-butylamine as a collector are 2.0 min of flotation and 10-3 mol/L of collector.
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Why is it important?
This work demonstrates that it is possible to separate carbon using 1-butylamine as a collector for froth flotation.
Perspectives
This work demonstrates on a sound scientific basis that short-chain amines can be efficient in separating coal by flotation, which would result in lower processing costs.
Javier Ernesto Vilasó Cadre
Read the Original
This page is a summary of: Efficient coal concentration using a short-chain amine-type compound as collector reagent: Flotation and optimization studies, Indian Journal of Chemical Technology, January 2023, CSIR-National Institute of Science Communication and Policy Research (NIScPR),
DOI: 10.56042/ijct.v30i1.63358.
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