26 May, 2021. In the post-COVID-19 global economic recovery, unprecedented stimulus plans by governments look to accelerate the emerging "Green Economy". This approach will ultimately pivot on the metals used to make batteries, and specifically lithium-ion batteries – the current and next generation battery chemistry of choice.

Nickel waste tailings are produced during the hydrometallurgical leaching of nickel – cobalt ore slurry with concentrated sulphuric acid. They are classified by the …

Abstract. HPAL (High-Pressure Acid Leaching) is one of the important technologies for extracting nickel and cobalt from nickel laterite ore. In the next few years, some plants …

In this study, it was aimed to extract vanadium (V) and nickel (Ni) from a petroleum coke ash (PCA) using a roasting process without additives, followed by leaching with sulfuric acid (H2SO4). The experiments were designed based on the Taguchi approach, taking into account the parameters of temperature, acid concentration, time, …

Effect of Sulfuric Acid on the Dissolution of Copper and Nickel Dissolutions of copper and nickel from the froth concentrate and mine tailing were investigated under different sulfuric acid concentrations (0 - 3 M), when other parameters like leaching temperature, stirring speed, solid/liquid phase ra- tio, total pressure and leaching are fixed ...

The nickel–cobalt tailings used in this study were collected from a nickel–cobalt mining area in Yunnan Province, China. XRF was used to test the chemical composition of nickel–cobalt tailings, and the results were shown in Table S1. The dried nickel and cobalt tailings are ground and sieved to control the particle size between 30 …

Underwater disposal of mine tailings in lakes and seas has been considered favorable due to the geochemical stability obtained during long-term storage in anoxic sediments. Sulfides are stable in the ore; however, oxidation and transformation of some substances into more soluble forms may impact bioavailability processes and enhance …

Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents …

Table 1 shows as a major example the summary of the metal contents of various tailings from some of the existing and historic metal mines in Finland. The tailings contain for example nickel, cobalt and zinc. The value of the metals in one single tailings waste pile reaches hundreds of millions of euros calculated from the concentrations and ...

In the previous research on Golgohar sulphidic tailing (Ahmadi et al., 2015), electron probe micro-analyzer (EPMA) revealed the presence of nickel and cobalt in the sulphidic phases. An iron-chrome‑nickel bearing phase containing 9.5% nickel was also found as an individual particle (Ahmadi et al., 2015). The major copper containing phase …

Nickel tailings mainly originate from the exploration of Ni containing sulfide and oxide ores, such as laterites (Marrero et al., 2015). Laterite tailings contain metal …

Initial chemical composition of the samples (tailing) Elements Ni Co Fe Mg Cu Zn Mn Ca Al Cr SiO2 Others % 0,38 0,08 44,69 4,77 0,02 0,04 0,76 0,15 4,5 1,83 5,65 37,13 The table shows that iron is the main element that makes up the tailing, its content is 44.69 %, while the percentage of nickel and cobalt is relatively low but significant, so ...

In this study, an orthogonal test table (L 18 (3 7)) was established for a Ni tailings pond in Yunnan Province, China, to determine the arrangement of five factors (initial pH, chloride concentration, temperature, tailing particle size, and solid-liquid ratio) when preparing leaching agents. A GAM was used to fit the factors, the metal ...

Norilsk Nickel's priorities are to maintain responsible management of tailings facilities and maximise tailings processing, while also ensuring safety and minimising risks …

This work shows that a copper nickel sulfide flotation mine tailing in Minnesota could be used for directly accelerated mineral carbonation and concurrent nickel sulfidization. ... samples, respectively. Each of the rest gangue minerals is less than 2% of the tailings. The sulfur content shown in Table 1 is in forms of chalcopyrite and cubanite ...

For recovery of copper and nickel from mi ne tailing, a number of fl otation tests were carried out at fixed PAX dosage of 50 g/t, fixed MIBC dosage of 200 g/t, pH of 6 for 6 minutes when the pulp ...

The amount of nickel extracted globally from nickel ore was equivalent to 1.5 × 10 6 t-Ni (USGS). Incorporating global nickel flow into the GLIO model, the material footprint of nickel associated with Japanese domestic final demand, that is, the amount of nickel extraction based on consumption, was estimated to be 0.14 × 10 6 t-Ni for 2005. …

The ferronickel slag tailings were physically activated by grinding in a ball mill for 2 h, 5 h, and 8 h, and the specific surface areas are 493.3 m 2 /kg, 530.7 m 2 /kg, and 721.2 m 2 /kg, correspondingly (abbreviated as AN, BN, and CN). And the particle size distributions of ferronickel slag powders with different grinding times are measured by the …

Tailings are typically pumped by pipeline as a (slightly) thickened slurry. A typical tailings slurry will be deposited at between 25% to 45% solids by mass. To achieve high % …

Table 13.1. Principal mine backfill techniques and their characteristics. ... Submarine and deep-sea mine tailing placements: a review of current practices, environmental issues, natural analogs and knowledge gaps in Norway and internationally ... Hydrometallurgical synthesis of nickel nano-sulfides from spent lithium-ion batteries. …

Despite obstacles, Indonesia is expecting investment in nickel processing to double from 2020 to $35 billion by 2033, led by Chinese stainless steel producers and battery makers. The country also ...

The initial characterization confirmed the presence of nickel (0.5–0.9% Ni) in the ore, which led to the interest in smelting the ore to obtain nickel in the metal. The smelting behaviour of the tailings is studied under the submerged arc furnace and blast furnace condition, under varying basicity .

Nornickel has all necessary resources and funds required to respond to an emergency at its tailing facilities and promptly repair any damage, including a sufficient fleet of excavators, dump trucks and other vehicles (as outlined in the ERPs). For more information, please refer to our presentation and to our Tailings Management Policy.

A secondary cleaner flotation tailing sample containing Ni and Co obtained from a nickel flotation plant (Western Australia) was used in this study. The nickel is predominantly mineralised as pentlandite in a disseminated texture in an ultramafic ore. The elemental assay of the samples is shown in Table 1. It indicates the sample contained …

Abstract and Figures. Mining is an important industry that provides products and services through infrastructure systems worldwide. However, the global development promotes the steady growth and ...

Burtynsky's skill as a photographic colourist is evident in most of his work, but perhaps most strikingly in a group of photographs of nickel tailings near Sudbury, Ontario. Juxtaposing pulsating orange against a glossy black background, he extracts spectacular images from a landscape that many might consider unphotogenic. The startling colours ...

Our analyses of SUNP slag tailings suggests that the slag tailings used in our experiments have an average nickel content of 0.36 wt.%. Most of the nickel …

Initial chemical composition of the samples (tailing) Elements % Ni Co Fe Mg Cu Zn 0,38 0,08 44,69 4,77 0,02 0,04 Mn Ca Al 0,76 0,15 4,5 Cr SiO2 Others 1,83 5,65 37,13 The table shows that iron is the main element that makes up the tailing, its content is 44.69 %, while the percentage of nickel and cobalt is relatively low but significant, so ...

The known copper-nickel deposits are primarily associated with anortho­ site and troctolite. Hence, the dominant minerals in the tailing will be anorthite, olivine, amphibole, chlorite, and pyroxene with lllinor amounts of biotite and ilmenite (Table 2).3 ~ABLE. 2. DISTRIBUTION OF MINERALS IN COPPER-NICKEL TAILING Mineral Anorthite Olivine ...

1.1. What Are Mine Tailings? An Initial Scope in an Uncertainty and Complex World. The initial step in mineral processing involves crushing and grinding ore to produce a suitable particle size for further metallurgical processing using physical and chemical separation methods [].Physical separation processes take advantage of the different …