Study of the gravity enrichment of Shalkiya deposit lead-zinc ores, S.A. Telkov, I.Y. Motovilov, Z.S. Abisheva, and M.B. Barmenshinova
- Organization:
- The Southern African Institute of Mining and Metallurgy
- Pages:
- 13
- File Size:
- 397 KB
- Publication Date:
- Jan 1, 2020
Abstract
As a rule, removing waste rock at the beginning of the process improves the conditions for the
flotation of minerals, and also reduces the operating costs of crushing, grinding and flotation.
Lead-zinc ores in the Shalkiya deposit of the Republic of Kazakhstan are classified as difficult
for enrichment, but taking into account their significant reserves, they are one of the main potential ores
for the production of lead and zinc. Under industrial conditions, for processing ores of the Shalkiya
deposit, a selective flotation concentration scheme with the production of lead and zinc concentrates is
recommended. However, according to the recommended scheme, it is not possible to obtain high-quality
concentrates of lead and zinc, with high metal recovery.
The paper presents the results of studies of preliminary gravitational enrichment of lead-zinc ore
in the Shalkiya deposit. Based on the fractional analysis for the particle size range of -40+8 mm, Henri-
Reingard enrichment curves were constructed, separation density (2730 kg /m3) was established to
isolate the light fraction with the lowest possible lead and zinc content, and gravity enrichment indices
(0.7-0.71) were determined.
It was found out that when using gravitational enrichment of the original large-sized ore in the
Shalkiya deposit, tails are released at the beginning of the technological process with a yield of up to
20% with the extraction of silica up to 30%, calcite up to 11% and carbonaceous matter up to 12%.
As a result of the studies, it was found that the beneficiation of crushed lump ore could be
conducted in heavy suspensions. One of the positive aspects of the use of gravitational enrichment is the
reduction of energy costs for grinding the heavy fraction, which was experimentally proved in this
article.
Keywords: Lead-zinc ores, Shalkiya deposit, fractional analysis, gravitational enrichment, floating
fraction, sunken fraction, separation density
Citation
APA: (2020) Study of the gravity enrichment of Shalkiya deposit lead-zinc ores, S.A. Telkov, I.Y. Motovilov, Z.S. Abisheva, and M.B. Barmenshinova
MLA: Study of the gravity enrichment of Shalkiya deposit lead-zinc ores, S.A. Telkov, I.Y. Motovilov, Z.S. Abisheva, and M.B. Barmenshinova. The Southern African Institute of Mining and Metallurgy, 2020.