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Utilization of Red Mud for Making Bricks


Affiliations
1 Jawaharlal Nehru Aluminium Research Development and Design Centre (JNARDDC), Wadi, Amravati Road, Nagpur, Maharashtra, 440023, India
2 Advance Separation Processes and Analytical Laboratory (ASPAL), Department of Chemical Engineering, Visvesvaraya National Institute of Technology (VNIT), Nagpur -440010, Maharashtra, India
3 Indian Institute of Technology, Gandhinagar, Gujarat, India
     

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'Red mud' or 'bauxite residue' is a highly alkaline waste generated from alumina refinery with a pH of 10.5-12.5. Red mud poses serious environmental problems such as alkali seepage in ground water and alkaline dust generation. Most of the environmental hazards related to disposal of red mud can be reduced by its safe treatment and efficient utilization. Sintering of red mud along with a silicate material at a very high temperature fixes nearly all the leachable soda and the mixture can be utilized as a building material. Fired and non-fired bricks can be developed by mixing red mud with fly ash and other materials. In this way, red mud can be utilized in bulk in building and construction industry. Review of utilization of red mud in manufacture of fired and non-fired bricks is presented in the paper.

Keywords

Bauxite Residue, Red Mud, Utilization, Bricks.
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  • Utilization of Red Mud for Making Bricks

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Authors

Suchita Rai
Jawaharlal Nehru Aluminium Research Development and Design Centre (JNARDDC), Wadi, Amravati Road, Nagpur, Maharashtra, 440023, India
K. L. Wasewar
Advance Separation Processes and Analytical Laboratory (ASPAL), Department of Chemical Engineering, Visvesvaraya National Institute of Technology (VNIT), Nagpur -440010, Maharashtra, India
M. J. Chaddha
Jawaharlal Nehru Aluminium Research Development and Design Centre (JNARDDC), Wadi, Amravati Road, Nagpur, Maharashtra, 440023, India
J. Mukhopadhyay
Indian Institute of Technology, Gandhinagar, Gujarat, India

Abstract


'Red mud' or 'bauxite residue' is a highly alkaline waste generated from alumina refinery with a pH of 10.5-12.5. Red mud poses serious environmental problems such as alkali seepage in ground water and alkaline dust generation. Most of the environmental hazards related to disposal of red mud can be reduced by its safe treatment and efficient utilization. Sintering of red mud along with a silicate material at a very high temperature fixes nearly all the leachable soda and the mixture can be utilized as a building material. Fired and non-fired bricks can be developed by mixing red mud with fly ash and other materials. In this way, red mud can be utilized in bulk in building and construction industry. Review of utilization of red mud in manufacture of fired and non-fired bricks is presented in the paper.

Keywords


Bauxite Residue, Red Mud, Utilization, Bricks.

References