ORIGINAL RESEARCH
Leaching and Releasing Characteristics
and Regularities of Sb and As from Antimony
Mining Waste Rocks
More details
Hide details
1
Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Xiangtan, China
2
School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, China
3
School of Science and Sport, University of the West of Scotland, Paisley, UK
Submission date: 2018-07-12
Final revision date: 2018-09-09
Acceptance date: 2018-09-10
Online publication date: 2019-05-13
Publication date: 2019-07-08
Corresponding author
Bozhi Ren
Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, School of Civil Engineering, Hunan University of Science and Technology, 411201 Xiangtan, China
Pol. J. Environ. Stud. 2019;28(5):4017-4025
KEYWORDS
TOPICS
ABSTRACT
This study collected waste rock samples during antimony mining and then probed into the releasing
characteristics and regularities of heavy metals Sb and As under different factors (solid-to-liquid ratio,
particle size, temperature, agitation intensity, pH value of leaching solution and leaching intensity)
through indoor static soaking and dynamic leaching experiment. The results showed that: the smaller
solid-to-liquid ratio, smaller particle size, or higher soaking liquid temperature could achieve the
faster dissolution and precipitation rate of heavy metals; agitation could accelerate the dissolution and
precipitation of heavy metals; the lower pH value could help to obtain more heavy metals deposited;
the higher leaching intensity could make the rate of heavy metal reach the precipitation peak faster.
Meanwhile, an equation fitting was conducted to the changing situation of Sb and As precipitation
amount from antimony waste rocks with different influence factors under static and dynamic leaching,
and the fitting results were good. This study was to reveal the releasing characteristics of heavy metal Sb
and As in antimony mining waste rocks, so as to promote the harmonious development of metal mines.