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ORE at CSIR-Institute of Minerals and Materials Technology: Recent submissions

Now showing items 3031-3040 of 3828

Extraction studies of cobalt (II) and nickel (II) from chloride solutions using Na-cyanex 272. Separation of Co(II)/Ni(II) by the sodium salts of D2EHPA, PC88A and Cyanex 272 and their mixtures

Sarangi, K.; Reddy, B.R.; Das, R.P. (Hydrometallurgy, 52(3), 1999: 253-265)

Solvent extraction studies of cobalt and nickel have been carried out from 1 M chloride solutions using the sodium salt of Cyanex 272 as extractant diluted with kerosene with tri-n-butyl phosphate (TBP) employed as a phase ...
Rate process of the reduction leaching of manganese nodules in dilute HCl in presence of pyrite - Part I. Dissolution behavior of iron and sulphur species during leaching

Kanungo, S.B. (Hydrometallurgy, 52(3), 1999: 313-330)

An attempt has been made to study the dissolution behavior of Fe (II), Fe (III), SO42- and release of elemental sulphur (S degrees) during the reduction leaching of ground manganese nodules of the Indian Ocean origin in ...
Rate process of the reduction leaching of manganese nodules in dilute HCl in presence of pyrite - Part II: Leaching behavior of manganese

Kanungo, S.B. (Hydrometallurgy, 52(3), 1999: 331-347)

The formal kinetics of the dissolution of MnO2 from two different manganese nodule samples of Indian ocean origin in dilute HCl and in the presence of a low grade pyrite: have been studied under various experimental ...
Reduction of Mn(IV) oxide by (NH4)(2)SO3 in the presence of metal ions in ammoniacal medium

Das, P.K.; Mishra, D.; Anand, S.; Das, R.P. (Hydrometallurgy, 52(1), 1999: 91-104)

The reduction of manganese dioxide with ammonium sulphite in the presence of Cu(II), Ni(II) and Co(II) has been studied. It was observed that the catalytic activity is in the order Cu(II)> Co(II)> Ni(II). The activation ...
Precipitation of arsenic in the Fe(II)-NH3-(NH4)(2)SO4-O-2 system

Das, R.P.; Anand, S. (Hydrometallurgy, 53(3), 1999: 267-277)

In our earlier studies [R.P. Das, S.A. Anand, Precipitation of iron oxides from ammonia-ammonium sulphate solutions, Hydrometallurgy 38 (1995) 165-173; R.P. Das, S.A. Anand, Thermogravimetric and XRD studies on iron compounds ...
Leaching of metals from Indian ocean nodules in SO2-H2O-H2SO4-(NH4)(2)SO4 medium

Acharya, R.; Ghosh, M.K.; Anand, S.; Das, R.P. (Hydrometallurgy, 53(2), 1999: 169-175)

Studies have been carried out for extraction of Cu, Ni, Co, Zn and Mn with simultaneous avoidance of iron dissolution during leaching of manganese nodules in an aqueous SO2-H2SO4(NH4)(2)SO4 system. The leaching parameters ...
Processing of solutions containing nickel and ammonium sulphate through solvent extraction using PC-88A

Reddy, B.R.; Parija, C.; Sarma, P.V.R.B. (Hydrometallurgy, 53(1), 1999: 11-17)

A process was developed to obtain a concentrated nickel sulphate:solution from a nickel-containing: cobalt raffinate using PC-88A as the extractant. More than 99% nickel extraction was achieved in three stages with I hi ...
Diamond and diamond-like-carbon growth on Si (100) by hot filament-assisted RF plasma CVD

Roul, B.K.; Nayak, B.B.; Mishra, Pratima Kumari; Mohanty, B.C. (Journal Of Materials Synthesis And Processing, 7(5), 1999: 281-288)

Diamond and diamond-like carbon (DLC) crystallites can be grown on a Si (100) substrate by hot filament-assisted RF plasma CVD in a low-vacuum (2-Torr) environment from C2H2 without using hydrogen. The deposition was carried ...
The new sponge resources of Orissa coast

Bapuji, M.; Sree, A.; Mishra, S.; Vimala, A.; Sahu, S.K.; Choudhury, S.; Thomas, P.A. (Current Science, 77(2), 1999: 220-222)
Effects of perfluorocarboxylic acids during zinc electrowinning from acidic sulphate solutions

Tripathy, B.C.; Das, S.C.; Singh, P.; Hefter, G.T. (Bulletin Of Electrochemistry, 15(9-10), 1999: 340-342)

In the present study the effects of perfluoro surfactants like perfluorobutyric acid (PFBA), tridecafluoroheptanoic acid (TDFHA) and pentadecafluoroctanoic acid (PDFOA) on zinc electrowinning from acidic sulphate solutions ...

Now showing items 3031-3040 of 3828

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