Research Article | OPEN ACCESS
Research on Optimum Mass Concentration of Unclassified Tailings Paste based on the Herschel-Bulkley Model
1, 2Wei Sun, 1, 2Aixiang Wu, 1, 2Hongjiang Wang and 1, 2Huaming An
1Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China
2School of Civil and Environmental Engineering, University of Science and
Technology Beijing, Beijing 100083, China
Research Journal of Applied Sciences, Engineering and Technology 2013 17:3119-3124
Received: January 12, 2013 | Accepted: February 07, 2013 | Published: September 20, 2013
Abstract
Tailings paste technology is more and more widely applied in underground paste filling, surface paste discharge area. The core of the tailings paste technology is how to prepare qualified paste which has good stability and liquidity. The definitions of qualified paste are divaricated both at home and abroad. Heretofore, there is no uniform definition. In this study, the unclassified tailings of a certain Lead-Zinc mine were configured into slurry at the concentration of 70~78% for the rheological experiment. Based on Herschel-Bulkley model regression, we obtain slurry rheological equation through the flow exponent n to evaluate whether qualified slurry paste. When the flow exponent n = 1, slurry for the Bingham plastic fluid, the qualification concentration of the paste is optimal and the range of 74~76% are the optimal mass concentration. This conclusion is consistent with the reality through a slump experimental validation. This study puts forward with the flow exponent n to determine the optimal quality of paste concentration method is feasible and has great applied value.
Keywords:
Herschel-bulkley model, optimum mass concentration, rheology, tailings disposal, unclassified tailings paste,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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