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·Low Grade Nickel Laterite Ore by Non Melting Reduction Magnetic Separation Process Guorui Qu 1 2 Shiwei Zhou 2 3 Huiyao Wang 2 3 Bo Li 1 2 3 and Yonggang Wei 1 2 3 physicochemical properties [1 2] Nickel resources mainly exist in the form of nickel sulfide ore and nickel laterite ore Among them nickel laterite ore accounts for
·The mineral phase transformation and migration of valuable metals for various laterite ores during calcination process was investigated as well the influences of mineral phases and chemical compositions on magnetic properties separation efficiency and nickel contents in separated laterite ore
·Magnetite Fe3O4 nanoparticles NPs are attractive nanomaterials in the field of material science chemistry and physics because of their valuable properties such as soft ferromagnetism half metallicity and biocompatibility Various structures of Fe3O4 NPs with different sizes geometries and nanoarchitectures have been synthesized and the related
·Goethite as the dominate phase within the laterite ore is often closely associated with silicate minerals quartz and maghemite as shown in Fig the earthy goethite matrix Al and Si are detected in Fig 1 c and d as well as Fe and Ni Earthy goethite mineral in the analysed areas contain high Ni in association with high Fe and Si concentrations which
·Abstract Nickel is mostly extracted from sulfide ores however laterite ores account for over 60 pct of all nickel resources in the world and despite its predominance there is no well established process to extract nickel from such ores Nickel in laterites is hosted in many different compounds such as oxides hydroxides and silicates minerals The sulfation roasting
·For the limonite in laterite nickel mine the nickel bearing magnetite concentrate with nickel grade of % and recovery rate of % can be obtained by reduction roasting magnetic separation
·The majority of nickel laterite deposits tend to occur within the th parallels north and south of the equator These areas are within warm tropical environments where chemical and mechanical weathering thrives This explains why the majority of nickel laterite deposits are found in New Caledonia Western Australia Indonesia and South
·With the sharp decrease of sulfide nickel resources the nickel laterite is becoming more attractive as nickel oxide nickel matte and nickel iron This study investigated the mineral phase structure chemical analysis thermal properties and element distribution characteristics of the rotten rock layer deposited in the Southeast Sulawesi Ophiolite Belt The
·1 Introduction The increasing consumption of stainless steel immensely promotes the demand of nickel [1] As sulfide nickel ore has been depleted gradually the effective utilization of laterite nickel ore accounting for approximately 72 percent of global nickel resources becomes extremely urgent [2] Based on consideration of the economic efficiency and
The combined treatment of low grade laterite nickel ore by fire and wet process is a research focus at present mainly including chlorination separation magnetic separation reduced sulfide roasting magnetic separation direct reduction and magnetic separation 13 14 Wang et al 15 adopted direct reduction and magnetic separation technology
·To repurpose this waste as magnetic iron Fe based adsorbent a three step extraction reduction coprecipitation approach was developed and the adsorption properties of synthesized product for arsenate As V and arsenite As III were investigated Properties of nickel laterite mining waste The NMW sample is mainly composed of Fe Si
al treatments to recover nickel and to increase its magnetic property based on differences magnetic properties of its minerals The effects of pretreatment on magnetization and operating parameters of magnetic separation are mainly in vestigated 2 Experiment Sample Preparation The original laterite ore from Indonesia Sebuku Island
·Upgrading nickel grade in low grade nickeliferous laterite ores before metallurgical extraction process is of utmost importance However most of nickel exists mainly in the form of isomorphism in
Energy consumption kJ/ kg laterite Calcination process Magnetic separation Estimated cost of processing USD/kglaterite 10 10 5 2 Estimated profit USD/kg laterite Fe species and therefore its magnetic properties which in turn enable the selective concentration of nickel by magnetic separation
·The production of ferronickel concentrate from low grade nickel laterite ore containing % nickel Ni was studied by the non melting reduction magnetic separation process
·Nickel is an important strategic alloying metal with wide industrial Nickel alloys are characterized by high strength and ductility as well as excellent corrosion and heat resistances Approximately 70% of nickel reserves are nickeliferous laterite ores from which only about 40% of the world nickel was Nickel is associated mostly with iron
·Of course upgrading nickel using magnetic separation highly depends on the ore mineralogy and mineral liberation and if nickel is associated with magnetic minerals Table 3 also shows that the percentage of iron increases by 70% in the magnetic product for ores S and I but not for ore L On the other hand more silicon bearing minerals
·The Vibrating Sample Magnetometer measured the magnetic properties of the ore as a fundamental of magnetic separation The laterite ore with low nickel content deposits in Indonesia can be
·The process of deep reduction and magnetic separation was proposed to enrich nickel and iron from laterite nickel ores Results show that nickel iron concentrates with nickel grade of %
·In this study segregation roasting and magnetic separation are used to extract nickel from a garnierite laterite ore The garnierite laterite ore containing % Ni % Co % Fe % MgO and % SiO2 was collected in the Mojiang area of China Garnierite was the Ni bearing mineral; the other main minerals were potash feldspar forsterite tremolite
·Abstract Nickel a valued metal mainly exists as nickel oxide in laterite nickel ore Furthermore a large part of the laterite nickel ore is low grade saprolitic ore In this paper a research on preparing ferro nickel alloy from low grade saprolitic laterite nickel ore using metallized reduction magnetic separation was studied
DOI / Corpus ID 238708945; Effective and economical treatment of low grade nickel laterite by a duplex process of direct reduction magnetic separation & rotary kiln electric furnace and its industrial application
