2012.11.15 Hydrometallurgical methods were tested for recycling tailings (cakes) formed at nickel plants that process oxide nickel ores by ammonia-carbonate technology.
Read More
2021.1.1 Nickel Oxide (NiO), a p-type semiconductor is considered to be a model semiconductor due to its wide band-gap energy of 3.6 to 4 ev and its innovative
Read More
2017.5.1 Introduction. Hyperaccumulator plants, rare plants that accumulate metal in their living tissues to concentrations up to 6% (dry wt.), can be used for the extraction of
Read More
2019.12.31 Various physical and chemical methods for the fabrication of nickel nanomaterials, such as mechanical milling, microwave, sonochemical, and
Read More
2020.9.1 Herein, the present study is aimed to synthesize nickel oxide nanoparticles from nickel nitrate precursor and Sesbania grandiflora flower extract. Synthesized nickel
Read More
2022.6.15 In this study, nickel oxide (NiO) nanoparticles with size range from 2 to 16 nm containing Stevia natural sweetener were eco-friendly synthesized via a simple
Read More
2016.6.19 This paper provides an overview of green synthesis of nickel and nickel oxide nanoparticles by using plant extract, microbial extract, and naturally occurring
Read More
Nickel processing, preparation of the metal for use in various products. Although it is best known for its use in coinage, nickel (Ni) has become much more important for its many industrial applications, which owe their
Read More
2019.8.24 This contribution reports on the synthesis and also compares the main physical properties of nickel oxide nanoparticles (NiO NPs) synthesized by a completely green process using Gymnema
Read More
2020.10.29 The primary energy consumption and greenhouse gas emissions from nickel smelting products have been assessed through case studies using a process model based on mass and energy balance. The required primary energy for producing nickel metal, nickel oxide, ferronickel, and nickel pig iron is 174 GJ/t alloy (174 GJ/t contained Ni), 369
Read More
2021.5.21 Therefore, this review aims to obtain a better understanding on the plant-mediated synthesis process of the major transition-metal and transition-metal oxide nanoparticles, and how
Read More
2022.12.1 Abstract. Manufacturing of metal and metal oxide nanoparticles (M/MO NPs) in large quantities needed a strong reliable, sustainable, and eco-friendly protocol. Present work represents on biogenic approaches to fabricate green nanoparticles using green technology. The fabrications of M/MO NPs using natural bio-resources were
Read More
2019.9.3 According to a review published by Diaz et al., oxide-type nickel ores accounted for 64% of. ... The Nippon Yakin plant in Oheyama used this process for the tr eatment of laterites.
Read More2022.8.22 HL process can be processed at ambient temperature, but it is a kinetically slow process, and the yield is low compared to AL and HPAL [ ]. AL requires 1 bar pressure and temperature in the range of approximately (50–90 °C). HPAL requires a high temperature in the range of (240-260 °C) and a pressure of 30–50 bar [ ].
Read More2012.11.15 Hydrometallurgical methods were tested for recycling tailings (cakes) formed at nickel plants that process oxide nickel ores by ammonia-carbonate technology. Certain plants – in particular, the Nicaro (Cuba) plant – have accumulated tens of millions of tons of tailings containing up to 1% valuable components (Ni and Co). It is shown that
Read More
2009.3.23 The process used by the Copper Cliff plant to recover nickel by vapometallurgy is detailed in Fig. 2.1. In a typical carbonyl process, impure nickel oxide is reduced to metal with hydrogen; the impure nickel is reacted (50-100 °C) with carbon monoxide to produce gaseous nickel carbonyl, Ni(CO)
Read More
Various processes are used to treat nickel matte. One process is the ammonia pressure leach, ... Next, it is necessary to reduce the oxide to nickel metal. Electric furnaces rated at 45 to 50 megavolt-amperes and operating at 1,360 ° to 1,610 °C (2,480 ° to 2,930 °F) are standard in modern laterite nickel smelters. ... In some plants, ...
Read More
2019.8.24 This contribution reports on the synthesis and also compares the main physical properties of nickel oxide nanoparticles (NiO NPs) synthesized by a completely green process using Gymnema sylvestere plant extract and sodium hydroxide as an effective reducing agent for co-precipitation method. The synthesized nanoparticles were
Read More
2022.1.18 Particles with size in the range of 1–100 nm, considered in any dimension, are called nanoparticles (NPs). Among various nanoparticles, nickel oxide nanoparticles (NNPs) are important because of their physical, chemical, and biological properties. In the past two decades, significant research has been done on the synthesis of NNPs.
Read Moreconsists of nickel oxide and cobalt oxide. Nickel and Cobalt in sulfate form are material sources for ... and beyond, new HPAL plants were built that are currently operating in Australia, Philippines, New Caledonia, Papua New Guinea and Turkey [5]. ... PTHPL will process nickel ore by HPAL technology under the temperature of 240℃~270℃ and
Read More
2020.5.1 The emerging topics were green synthesis of nanosilica and green synthesis of magnetic materials [137] [138] [139].The use of plant extracts as bioreductors for iron oxide, nickel oxide and cobalt ...
Read More
2022.11.1 Nickel oxide nanoparticles are low-cost and non-toxic candidates, ... PPCN will become a useful and biocompatible substance that aids the photosynthesis process in plants, by absorbing the released CO 2 and H 2 O during the photocatalytic breakdown of dyes in polluted water bodies with PPCN, under UV/Vis light radiation. In addition, the ...
Read More
2022.8.1 Phyto-mediated synthesis of nickel oxide ... Green synthesis of metallic NPs is an economical, single step and eco-friendly process [31], [32]. Essential phytochemicals such as alkaloids, terpenoids, flavonoids, and amides act as reducing agents in nanoparticle synthesis. ... the synthesis of iron oxide NPs (Fe 2 O 3 NPs) using various plant ...
Read More
2022.3.1 The composite hydroxide mediated (CHM) approach was opted for the synthesis of pure nickel oxide (NiO) and Al-doped nickel oxide (Ni1–xAlxO; x = 5, 10, 15, 20, 25, and 30 wt.%) nanoparticles.
Read More
2021.6.1 In the present study, Ag-doped nickel oxide nanoparticles (NiO-NPs) were synthesized through a sol–gel method using of Cydonia oblonga plant extract as a new green stabilizing agent and employed ...
Read More
2020.2.6 Background In this work, nickel oxide nanoparticles were prepared by polyol mediated aqueous route of sol–gel process using nickel nitrate hexahydrate as precursor, a mixture of isopropyl ...
Read More
The oxide is obtained from nickel ores by a series of treatments including concentration, roasting and smelting of the minerals. In the first step of the process, nickel oxide is reacted with water gas, a mixture of H 2 and CO, at atmospheric pressure and a temperature of 50 °C. The oxide is thus reduced to impure nickel.
Read More
2021.10.3 MSP, which is typically 55% nickel, is produced by exposing high pressure acid leach (HPAL) solutions to hydrogen sulphide, which is a lethal gas. Ambatovy, Glencore’s Minara, Sherritt’s Moa ...
Read More2017.5.1 Introduction. Hyperaccumulator plants, rare plants that accumulate metal in their living tissues to concentrations up to 6% (dry wt.), can be used for the extraction of Ni from ultramafic soils naturally enriched in Ni, or from mineral wastes polluted with Ni, in a process known as phytomining or agromining technology (Chaney et al., 1998, Reeves,
Read More
LMZG ha formado un contenido único y rico de la cultura empresarial, especialmente la cohesión y la cohesión solidaria, es la fuente del desarrollo empresarial sostenible.
