— Efficacy of reduction pre treatment of laterite ore on the extraction of Ni Co and Sc was determined by comparing the %recovery obtained between leaching untreated ore and reduced ore treated at 700 °C for 40 minutes at 20 wt% solids 85 90 °C 360 minutes and experimental acid consumption of kg H 2 SO 4 per ton of ore as
Yêu cầu trực tuyến →— The pH of nickel laterite mine waste is neutral to moderately alkaline which makes it unlikely to cause acid mine drainage which is one of the most prevailing environmental problems of mines
Yêu cầu trực tuyến →— The nickel laterite mining industry faces lower recovery rates related to low ore grades multiple nickel carrying minerals as well as lateral and vertical heterogeneities at ore deposit scale
Yêu cầu trực tuyến →— Nickel cobalt iron and chromium are potentially valuable metals contained in laterite analysis results revealed that the laterite from the Philippines contained predominantly fine iron oxide/oxyhydroxide as well as a small amount of slightly coarse chromite and gangue mineral aggregates Additionally the coarse cores
Yêu cầu trực tuyến →— Figure 1 World map of explored Ni Co laterite deposits of different age Figure 2 Box plot of deposit tonnages by nickel cobalt laterite mineralogical Figure 3 Box plot of average nickel grades of deposits by mineralogical Figure 4
Yêu cầu trực tuyến →— The influence of nickel carriers minerals contained in three different laterite ore samples on their extraction by a sulfation roasting leaching process is investigated in this paper X ray diffraction scanning electron microscopy coupled to energy dispersive spectroscopy and chemical analyses by atomic absorption spectrometry were the
Yêu cầu trực tuyến →— Western Australia is a classic clay ore Ni Co laterite deposit The Cawse deposit in Australia as well as many of the deposits in Cuba are oxide ore Ni Co laterite deposits A few deposits in Greece and the Ural Mountains Russia are karstic Ni Co laterite deposits The Bulong deposit in Western Australia contains both oxide and clay ores
The laterite nickel ore in China has the characteristics of low content of ferric nickel and high content of magnesia silicon After pressure leaching laterite nickel ore by nitric acid the valuable metals are separated successively and high magnesium slag containing mainly MgO was obtained by the pyrolysis of magnesium nitrate [23] The high
Yêu cầu trực tuyến →— Modern techniques of ore delineation and mineralogical identification are being developed to aid in streamlining the Ni Co laterite mining process and low temperature and low pressure ore
Yêu cầu trực tuyến →— Between 2005 and 2020 inclusive the Philippines had exported in total 300 million tonnes of laterite ore averaging % Ni and containing some million tonnes contained nickel metal Over the last five years exports averaged 25Mt per year laterite containing 300 000 tpy contained nickel
Yêu cầu trực tuyến →— Modern techniques of ore delineation and mineralogical identification are being developed to aid in streamlining the Ni Co laterite mining process and low temperature and low pressure ore
— laterite ore to produce a nickel cobalt scandium rich leach solution and iron rich mag netic residues The leaching of pre treated ore resulted in higher recovery of Ni Co and Sc when compared to the yield from the leaching of untreated ore Effects of reduction temperature and time lixiviant type pH leaching temperature and time and
Yêu cầu trực tuyến →— Although the acid requirement for the saprolite ore alone can be 30 50 kg/kg nickel depending on the magnesium to nickel ratio Curlook 2004 when used in concert with HPAL of the limonite ore at a low saprolite to limonite ratio of the overall acid requirement becomes significantly lower around 25 kg/kg nickel
Yêu cầu trực tuyến →— Nickel sulfide ore occupies 28% of world nickel resources while nickeliferous laterite ore occupies 72% however less than half of the global nickel were produced from nickeliferous laterite ore in 2000 due to its low grade of nickel less than % and complex mineral phases Quast et al 2017; Wang et al 2008
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