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Date submitted2018-05-14
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Date accepted2018-07-15
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Date published2018-10-24
Experience of Integrated use of gold-bearing raw material in the production of precious metals
- Authors:
- V. V. Zhmurova
- N. V. Nemchinova
With the depletion of rich gold-bearing ores, the processing started to use polymetallic ores, which, in addition to precious metals, contain other elements that could be valuable after recovery. The problem of using such ores is extremely difficult because of the high cost of recovery of associated valuable components. The paper presents the results of studies on the integrated use of extracted gold-bearing raw materials based on the example of the Berezitovoye deposit (Amurskaya oblast), they have low content of precious metals and many heavy non-ferrous metals (copper, lead). Experimental work was carried out to obtain copper by the method of cementation from solutions formed after the leaching of the impurities of gold-containing cathode deposits with hydrochloric acid. The cementing metal was iron turnings (waste products of the turning shop of the enterprise). Next, it was proposed to use cemented copper as a collector during re-melting of slags – wastes of processing of low-grade polymetallic ores containing precious metals. The authors obtained ingots of alloyed gold with gold weight fraction of 16 %, which meets the requirements of TU 117-2-7-75 on the content of non-ferrous metals. During hydrochloric acid treatment of cathodic deposits silver partially passed into the solution, it was recovered together with cemented copper and, in subsequent melting, passed into alloyed gold. Thus, the method proposed by the authors helps to reduce the content of precious metals in the «incomplete production cycle» of the gold recovery factory. The opportunity of selling the cementation copper at the enterprises specializing on manufacturing of jewels is shown; the expected economic effect at the same time amounted to more than 1.8 million rubles.
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Date submitted2018-01-12
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Date accepted2018-03-08
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Date published2018-06-22
A method for controlling siltation of water catchments of district drainage systems of kimberlite mines
- Authors:
- N. P. Ovchinnikov
High contamination of mine water leads to intensive siltation of water catchments of district water drainage installations of kimberlite mines in Russia, because of which their pumping equipment periodically works in non-stationary regimes. At present, a number of known methods are used to limit the operation of pumping equipment in non-stationary modes: equipping the pump with a hand hoist to regulate the depth of lowering its suction pipeline into the sinkhole; preliminary dismantling of one of the two screen filters, mounted in the suction pipeline of the pump, which has smaller cells. Experience in the operation of water-drainage farms of kimberlite mines shows that these two methods allow to prevent the operation of pumping equipment in non-stationary modes only for a short period of time. A mine drainage installation is proposed, the technical result of which is the effective struggle against the silting of the water catchments of the district drainage systems of the kimberlite mines of the country.
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Date submitted2010-07-27
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Date accepted2010-09-06
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Date published2011-03-21
Distribution of groups of trace elements elements by types metasomatic rocks and ores in the Elov nickel deposit
- Authors:
- O. P. Mezentseva
- I. V. Talovina
The article deals with the distribution of groups of trace elements in four selected types of metasomatic rocks and ores in the Elov deposit: chamosite metasomatic rocks and ores, which are three mineral species: a – chamosite, в – clinochlore –brendleyit-chamosite, с – clinochlore-talc-chamosite, goethite metasomatic rocks and ores, nepouite-chrysotile-lizardite metasomatic rocks and ores, and lizardite-chrysotile serpentinites. Also calculated the coefficients of accumulation of trace elements and formulated conclusions about elements are accumulation or elements are weathered of the above types of metasomatic rocks and ores of the Elov deposit.
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Date submitted2010-07-10
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Date accepted2010-09-24
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Date published2011-03-21
Value Δ34S in millerite and genesys of clinochlore-brindleyite-chamosite nickel ores in the Elov supergene deposit (North Urals)
- Authors:
- O. P. Mezentseva
- I. V. Talovina
The article deals with genesis of chamosite zone in Elov supergene nickel deposit after the example of clinochlore-brindleyite-chamosite nickel ore. According to obtained data, isotope ratio 34 S/ 32 S in millerite from these ore type varies from –35,5 to –45,6±0,6 ‰. This value corresponds to sedimentary rocks und testifies surface exogenous genesis of chamosite nickel ores.