Zobrazeno 1 - 7
of 7
pro vyhledávání: '"E. N. Merkulova"'
Publikováno v:
Journal of Mining Science. 53:1124-1132
Sequential leaching of gold-bearing ore of the residuum is described. The interconnection between rare earth elements and their mineral matrix is defined. The mobility of REE in the initial ore and during hypergenesis is assessed. Two kinds of REE ar
Publikováno v:
Journal of Mining Science. 51:347-352
The article describes studies into morphology of gold in the initial ore and mining-generated silt in the weathered crust of the Yenisei Range using the methods of optical and electron microscopy. The authors have determined sizes and shapes of gold
Autor:
E. N. Merkulova, A. M. Zhizhaev
Publikováno v:
Russian Journal of Applied Chemistry. 87:16-22
A coprecipitation of copper(II) and zinc(II) from complex sulfate solutions with natural calcite was investigated. The main features of the process and mineral forms of incorporation of heavy metals in a solid phase were determined. Sequential precip
Autor:
E. N. Merkulova
Publikováno v:
Polythematic Online Scientific Journal of Kuban State Agrarian University.
Autor:
E. N. Merkulova, A. M. Zhizhaev
Publikováno v:
Russian Journal of Applied Chemistry. 81:946-951
Precipitation of zinc from sulfate solutions onto carbonate rock was studied. The residual concentrations of zinc and the capacity of the precipitating agent were measured, and the mineral forms of zinc in the precipitate under various process condit
Publikováno v:
Russian Journal of Applied Chemistry. 80:1632-1635
Mechanism of interaction of copper sulfate with natural calcium carbonates, responsible for low residual copper concentrations in solutions and for the behavior of open and closed systems in storage is considered.
Autor:
E. N. Merkulova, V. A. Klimova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 8:759-763
It was shown that carbon, hydrogen, and nitrogen can be determined simultaneously by the pyrolytic decomposition of the organic substance in a stream of oxygen in an empty combustion tube. Carbon and hydrogen are determined in the usual way, and nitr