·The developed process comprised three steps 1 selective recovery of copper as metallic copper by electrolysis at controlled potential; 2 selective recovery of nickel as nickel hydroxide by simultaneous alkalinization at pH 14 and oxidation of chromium III to chromium VI of the previous solution; 3 selective recovery of zinc as
·Conventional converting of nickel containing copper mattes in Peirce Smith horizontal converters does not conform with the current environmental regulations A global trend is to change over from conventional batch converting to a continuous converting process producing running slags The main purpose of the continuous matte converting process is to
·A study of mechanical characteristics and microstructural evolution of copper nickel alloy sheet undergoing ultrasonic vibration assisted uniaxial tension Author links open overlay panel Tengshu Deng a b Hongsheng Liu a Show more Both of the acoustic softening and the acoustic hardening are found in the UV assisted tensile process of
·Effects of nickel component thiourea glue and chloride ions and their interactions on the passivation of copper—nickel based alloy scrap anodes were investigated by combining conventional electrochemical techniques Results obtained from chronopotentiometry and linear voltammetry curves showed that the Ni component made electrochemical stability of
·The flotation by surface sulphidisation of the oxidized copper cobalt bearing ore from Kimpe % Cu; % Co was studied in order to evaluate its behavior by the analysis of its most
·In the present scenario vapor pressure of copper is only slightly higher than that of nickel bar for copper and bar for nickel at 3000 K 27 28 However their thermal conductivities
·To efficiently co extract Ni and Cu from low grade nickel copper sulfide ore chlorination roasting with NH 4 Cl followed by a water leaching process was investigated The results show that % Ni and % Cu can be synchronously extracted when the ore particle size is 75 80 μm the roasting time is 2 h the mass ratio of NH 4 Cl to ore is 1 and the
·After roasting copper nickel mixed concentrate was obtained by flotation treatment After that the flotation tailings went into magnetic separation to recover magnetic Fe 3 O 4 and Fe The technical route and principle are shown in Fig 10 The simultaneous step recovery of zinc copper nickel and iron in electroplating sludge was realized
·In the sulfidic removal process of copper these precious metals enter the copper sulfide residue and are recovered in copper smelting Carbonyl Nickel Process It is a process for preparing metal nickel and its products by using the formation of carbonyl nickel [N iCO 4] and its decomposition reaction Ni 4CO=Ni CO 4 see carbonyl process
Nickel processing Extraction Refining Alloying The extraction of nickel from ore follows much the same route as copper and indeed in a number of cases similar processes and equipment are used The major differences in equipment are the use of higher temperature refractories and the increased cooling required to accommodate the higher operating temperatures in nickel
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