Indian Journal of Chemical Technology

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Efficient Coal Concentration Using a Short-Chain Amine-Type Compound as Collector Reagent: Flotation and Optimization Studies


Affiliations
1 Instituto de Metalurgia, Universidad Autonoma de San Luis Potosi. Sierra Leona Av. 550 Lomas 2da seccion,78210 San Luis Potosi, Mexico
2 Tecnologico de Estudios Superiores de Tianguistenco, División de Ingenieria Mecanica. Tenango-La Marquesa km 22, Santiago Tilapa, 52650 Santiago de Tianguistenco, Estado de Mexico, Mexico
 

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<sup>-3</sup> mol/L of collector.

Keywords

Box-Behnken Design, Butylamine, Collector, Flotation, Sub-Bituminous Coal
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  • Efficient Coal Concentration Using a Short-Chain Amine-Type Compound as Collector Reagent: Flotation and Optimization Studies

Abstract Views: 119  |  PDF Views: 87

Authors

Javier E. Vilaso-Cadre
Instituto de Metalurgia, Universidad Autonoma de San Luis Potosi. Sierra Leona Av. 550 Lomas 2da seccion,78210 San Luis Potosi, Mexico
Delia M. Avila-Marquez
Instituto de Metalurgia, Universidad Autonoma de San Luis Potosi. Sierra Leona Av. 550 Lomas 2da seccion,78210 San Luis Potosi, Mexico
Ivan A. Reyes-Dominguez
Instituto de Metalurgia, Universidad Autonoma de San Luis Potosi. Sierra Leona Av. 550 Lomas 2da seccion,78210 San Luis Potosi, Mexico
Alien Blanco-Flores
Tecnologico de Estudios Superiores de Tianguistenco, División de Ingenieria Mecanica. Tenango-La Marquesa km 22, Santiago Tilapa, 52650 Santiago de Tianguistenco, Estado de Mexico, Mexico
H. Paola Toledo-Jaldin
Tecnologico de Estudios Superiores de Tianguistenco, División de Ingenieria Mecanica. Tenango-La Marquesa km 22, Santiago Tilapa, 52650 Santiago de Tianguistenco, Estado de Mexico, Mexico
Emmanuel J. Gutierrez-Castaneda
Instituto de Metalurgia, Universidad Autonoma de San Luis Potosi. Sierra Leona Av. 550 Lomas 2da seccion,78210 San Luis Potosi, Mexico
Javier Aguilar-Carrillo de Albornoz
Instituto de Metalurgia, Universidad Autonoma de San Luis Potosi. Sierra Leona Av. 550 Lomas 2da seccion,78210 San Luis Potosi, Mexico

Abstract


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<sup>-3</sup> mol/L of collector.

Keywords


Box-Behnken Design, Butylamine, Collector, Flotation, Sub-Bituminous Coal

References