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- Title
硫化矿固态阻化剂的阻化机理与性能评价.
- Authors
李 明; 宋欣筑; 潘 伟; 李孜军
- Abstract
Spontaneous combustion of sulfide ore is a major safety risk during mining process for high sulfur metal mines. Liquid inhibitor was widely used to present the spontaneous combustion of sulfide ore at present, but it faces some problems, such as loss of effective components and pollution of surrounding working environment. Considering of the shortcomings of liquid inhibitor, a new solid inhibitor and its optimization method was proposed based on the inhibition mechanism of spontaneous combustion for sulfide ore, and its functional components include covering agent, oxygen scavenger, preventing heat agent and flow agent. The sodium bicarbonate, reduced iron powder and light calcium carbonate are selected as the effective components, and talc powder was added as an auxiliary component to improve the solid inhibitor′s flowability. The orthogonal experiment method was used to analyze the performance of different components of solid inhibitor. The angle of repose, oxidation weight gain rate and inhibiting rate were respectively used to evaluate the flowability and inhibition property of solid inhibitor. The range analysis method was used to optimize the component proportion of solid inhibitor according to the data of angle of repose and oxidation weight gain rate, and the result of optimal proportion is verified by indoor experiments. The experimental results show that the best inhibiting rate is 51.16% at the 22nd day, and the flowability of solid inhibitor is good(the angle of repose is 32.20°), this research provides a new path to develop the inhibitor for sulfide ore.
- Publication
Journal of Natural Disasters, 2023, Vol 32, Issue 3, p91
- ISSN
1004-4574
- Publication type
Article
- DOI
10.13577/j.jnd.2023.0210