Experiments were conducted to investigate the effects of the initial particle size and oxygen concentration in the process gas on the size distribution of copper concentrate particles oxidized under suspension-smelting conditions. The size
The goal of this investigation was to test the effect of particle size and oxygen concentration in the process gas on the chemical characteristics, morphology and mineralogy of copper concentrate ...
An experimental study was conducted to elucidate the evolution of size and chemical composition of La Caridad copper concentrate particles during oxidation under simulated flash smelting conditions.
The results indicated that mineral particle size is an integral factor to improve the copper recovery from ore in heap leaching operation.
The filtration process must displace about 50% of the remaining water with air to achieve the required moisture. The TML varies with particle size and typical TML values are shown below. Figure 2: Typical TML vs. particle size. From a plant perspective the factors which affect filter performance are generally beyond the control of the operator.
The small reactors used here were adequate for comparing leaching of the concentrate by moderate thermophiles and thermophiles, particularly with reference to copper extraction and reduction in particle size (50% extraction at 49 °C and 92% extraction at 77 °C in single reactors, Table 1, Table 2 ).
Experiments were conducted to investigate the effects of the initial particle size and oxygen concentration in the process gas on the size distribution of copper concentrate particles …
The chemical composition and dust formation during the oxidation of copper concentrate particles under suspension-smelting conditions were investigated. The effects of initial particle size and ...
In the current research work, influences of particle size, grinding time, and agitation rate on the flotation of a copper sample from Sungun copper mine (E. Azerbaijan, Iran) containing 0.66% Cu ...
The results demonstrate low metal releases from the copper minerals and copper concentrates to environmental media. The environmental classification was assessed by comparing the metal release from the copper concentrates to the relevant ecotoxicity reference values derived by the relevant metal associations and consortia.
e the precipitated layer is 2–3 μm thick. Ultrafi ne grinding of a mineral to a particle size of 80% passing 10–12 μm will prevent passivation, as the leaching mineral will disintegrate …
According to Zhang et al. (2015), roasting the waste for 20 min at 850 °C, using an additive of coke (5%; particle size of 1 mm; magnetic field intensity of 0.29 T; and roasted slag …
A mathematical model has been presented to study the combustion of a single copper concentrate particle with high moisture content. By using the presented model, the effect of particle moisture content on particle temperature, sulfur oxidation, and combustion heat generation has been evaluated. The mineralogical composition of the …
The distribution of copper, iron, and sulfur during the oxidation of La Caridad copper concentrate particles under simulated flash smelting conditions was studied in a laboratory reactor.
The effects of oxygen partial pressure, temperature, and particle size on the reaction behaviour of each concentrate were studied. The reaction products were analyzed for …
Deciding on the most suitable enrichment process after detailed characterization of the products obtained from different comminution equipment and their particle size and shape directly affected the amount, content, and …
An experimental study was conducted to elucidate the evolution of size and chemical composition of La Caridad copper concentrate particles during oxidation under simulated flash smelting conditions. Input variables tested included particle size and oxygen …
This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, collector dosage, frother dosage ...
The effect of sulfide concentrate size, amount of sulfur present in concentrates and air enriched with oxygen on sulfur combustion were numerically analyzed.
The industrial data were obtained by sampling the rougher concentrate in three groups of cells (1–4, 5–8, and 9–12). The results allowed for estimating the recovery of Scheelite—in terms of liberation, particle size, and shape factors—along the flotation bank with an automated process mineralogy data analysis.
An experimental study was conducted to elucidate the evolution of size and chemical composition of La Caridad copper concentrate particles during oxidation under simulated flash smelting conditions. Input variables tested included particle size and oxygen concentration in the process gas.
The most reasonable size fraction for gold enriched in the copper concentrate was −58 + 20 μm, while the coarse size fraction of −100 + 74 μm was found to be against to the selective ...
Based on a study conducted by Markovic et al. (2008); particle size and degree of liberation of minerals in copper porphyry ores are one the most important factors affecting the recovery and ...
Download scientific diagram | Effect of the particle size of concentrate on copper recovery. Initial electrolyte conditions: C NaNO 2 = 0.10 M, C H 2 SO 4 = 1 M, T = 120 C, P tot = 6 …
Evolution of size and chemical composition of copper concentrate particles oxidized under simulated flash smelting conditions. Metallurgical and Materials Transactions B: Process …
In this paper, a mathematical model based on the optimization of copper concentrate cost and the content of impurity elements in the mixed copper concentrate is constructed for the copper concentrate dosing calculation. The model is solved using a particle swarm optimization algorithm to obtain the mixed copper concentrate blending …
In this research, numerical simulation of three-phase flow (airflow, sulfide concentrate particles, and liquid fuel droplets) within a copper flash smelting furnace was conducted to investigate the effect of combustion of the sulfur present in the sulfide concentrates on temperature distribution and species production. The effect of sulfide …
To address this, concentrate blending becomes crucial, ensuring uniform copper, iron, sulfur, silica, impurities and maximizing valuable metals (gold, silver and PGMs). The concentration of critical elements, as well as particle size, which determines process parameter settings during smelting mainly depends on these blending operations.
Using three different particle size distributions (PSD) with the indices (d 80) of 45, 32 and 16 µm of a chalcopyrite concentrate from the main Iranian copper processing plant and two types of bacteria, one and two-step …
