- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
- [email protected]
As nickel sulfide deposits are exhausted, it becomes necessary to mine and process low-grade laterite ores to satisfy the need for nickel production. To achieve an efficient extraction of Ni, Fe and Co, additives such as chlorides, sulfur and sulfates, alkali oxides, fluorides, sodium carbonate and sodium hydroxide are introduced into the …
اقرأ المزيد
The processes of extraction from nickel ores are mentioned. Narrating its major physical properties, enumeration is made of different nickel alloys and their uses. Moreover, the novelty of nickel alloys as immune to chemically and mechanically aggressive service condition is discussed in consideration of global scenario. Special attention is ...
اقرأ المزيد
With the vigorously growing demand of the steel industry, corrosion resistance alloys, clean energy industries, and a variety of engineered infrastructure or technology, high-grade nickel ores are being exhausted gradually in the world. This review outlines metallurgical processes for nickel production from various nickel sulfide ores resources, particularly …
اقرأ المزيد
A characteristic feature of serpentine oxidized nickel ores (ONO) of the Serov deposit (≈ 1 wt.% Ni) is the increased content of iron and magnesium. The main nickel-containing phases are lizardite, antigorite, clinochlore and iron oxides with the nickel content varying from 1.6 to 9.2 wt.%.Heap (percolation) leaching with aqueous H2SO4 …
اقرأ المزيد
The carbonyl method of refining nickel and iron was invented more than 100 years ago and has been used for refining of nickel commercially.CVMR® developed the process of direct extraction of nickel and iron from laterite ores as metal carbonyls which in turn produced pure nickel and iron metals.
اقرأ المزيد
At present, the large cobalt and nickel ores are in the process of clear depletion and the main ores of these two metals are constituted by minor mineral concentrations in ores formed by different metals. This requires the mineral extraction processes to …
اقرأ المزيد
Platinum (Pt) is a rare and valuable metal that is widely used in various industrial applications due to its unique properties. Platinum ore refers to the naturally occurring rocks or minerals that contain significant concentrations of platinum, usually in the form of platinum group minerals (PGMs) and associated minerals. Platinum ore is …
اقرأ المزيد
Nickel extraction technology from nickel sulfide ore based on "sulfated roasting–water leaching" can achieve high efficiency and clean extraction of nickel, but how to improve the utilization efficiency of sulfur in sulfated roasting is a bottleneck problem that needs to be solved urgently.
اقرأ المزيد
Nickel extraction from primary resources such as ores/minerals (sulfides, arsenides, silicates, and oxides) including the unconventional one viz., the polymetallic sea nodules, and various secondary resources has been examined. Though sulfide ores after concentration are generally treated by the pyro-metallurgical route, most processes for ...
اقرأ المزيد
Abstract: A direct solvent extraction (DSX) process for purifying nickel and cobalt from the nitric acid leach solution of nickel laterite ores was conceived and experimentally probed. The proposed process consists of two solvent extraction (SX) …
اقرأ المزيد
The diminishing availability of nickel sulfide ores and the increasing demand for nickel and its compounds have led to a growing interest in laterite deposits as an alternative source for producing nickel. However, extracting nickel from laterite ores differs from sulfides because nickel contained minerals are generally disseminated …
اقرأ المزيد
The extracted ore undergoes further processing to separate the valuable iron-bearing minerals from the impurities and gangue minerals, as described in the subsequent stages of iron ore processing. Exploration and extraction are vital steps in the iron ore processing chain, as they determine the presence and viability of iron ore …
اقرأ المزيد
The recovery of nickel from solution, following leaching of either type of nickel ore, can be achieved by hydrogen reduction, as discussed above, or by electrolysis. Outokumpu uses the latter technology in Finland. Nickel is deposited from nickel sulfate solutions (~60 grams/liter nickel) containing sodium sulfate and boric acid to improve the ...
اقرأ المزيد
THE Mond process marked an entirely new departure in metallurgical practice and in the principles which had hitherto guided it. It depended on the remarkable property possessed by nickel of forming a volatile compound with carbon-monoxide, from which metallic nickel might be released if the gaseous compound was heated to 180° C.
اقرأ المزيد