To avoid excess acid consumption in the high Ca/Mg/Mn samples, typically, pyrite is added and roasted together with the slag to convert the Ca to CaSO 4 and Mg to MgSO 4 before leaching in dilute ...
Recently, a study on the kinetics of copper extraction from copper smelting slag by pressure oxidative leaching in sulfuric acid solution was presented by Shi et al. 76 They reported that ...
A Cu-Co ore from Katinga Province, the Republic of Congo containing 1.5% Co and 1.6% Cu was tested to determine the. leachability of Cu and Co using sulphuric acid and hydrogen peroxide mixtures ...
In this study, a novel reduction method for MnO 2 ore was developed using Fe P slag as the reductant. MnO 2 ore can be adequately reduced by Fe P slag, and the product of this reduction can be extracted using sulphuric acid (H 2 SO 4). First, the possible chemical reaction that occurs during this method was proposed and simulated …
Add 3.0 g of vanadium pentoxide (V2O5) to a mixture of 300 mL of concentrated phosphoric acid and 600 mL of concentrated sulfuric acid. Heat and stir until all of the vanadium pentoxide has dissolved. Add, dropwise, a saturated solution of potassium permanganate until the acid mixture gives a faint pink when a few drops are …
1. Introduction. The converter slag generated during the pyrometal-lurgical copper production generally contains significant amounts of some valuable metals such as copper, cobalt, nickel and zinc ...
The optimum conditions of sulfuric acid leaching process were particle size at < 0.045mm, sulfuric acid concentration at 90 wt.%, acid/slag mass ratio at 1.6:1, feeding temperature at 120 °C ...
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This primary crusher reduces the size of the ore from boulder to golf ball-sized rocks. ... The resulting "pregnant" leach solution of sulfuric acid and copper …
Additionally, almost all the arsenic was leached at temper-ature of 40 C and leaching time of 60 min (Table 4). The concentrations of the dissolved elements in solution after sulfuric acid leaching of copper rich converting slag (Mixing power 0.26kW/m3, T 40 C, oxygen ow 1⁄4 1⁄4 fl rate 2000mL/min). 3.6.
Crusher. Hydraulic power pack. Mill. Pump. Vibrating screen. ... Sulfuric acid is used during the processing of copper ore, and is also a by-product of the processing. It is …
The sulfuric acid leaching of titanium from titanium-bearing electric furnace slag (TEFS) was investigated under different experimental conditions. In the sulfuric acid leaching process, the M x Ti 3-x O 5 (0≤x≤2) and diopside could react with sulfuric acid. The optimum conditions of sulfuric acid leaching process were particle size at < …
Hydrometallurgical treatment of the slag could be an alternative route to the presently used way of processing. The influence of a number of leaching parameters such as sulfuric acid concentration, amount of H2O2 added, liquid to solid phase (l/s) parameter and process temperature on the copper leaching efficiency was investigated.
(1)–(3) [25]. Sulfuric acid leaching of uranium minerals requires the presence of Fe. Characterization studies. The uranium ore sample used in the present studies was collected from Narwapahar mine, Singhbhum district, Jharkhand, India. The ore was crushed and ground to 600 μm, 425 μm and 300 μm size using laboratory jaw crusher …
Grade control during ore haulage delivery to die mill 28 2.4. Co-ordination with mill 29 2.4.1. Metallurgical balance 30 References 30 PART II. PROCESSING TECHNOLOGY 33 ... Sulphuric acid leaching systems 89 5.4.1. Atmospheric agitation 89 5.4.2. Pressure leaching 97 5.5. Carbonate leaching systems 100 5.5.1. Atmospheric leaching 100
The study found that steel slag modified with sulfuric acid has a rich pore structure and a larger specific surface area. Meanwhile, it also has more functional groups (such as …
This paper provides a technical approach for efficiently recovering Mg from ferronickel slag to produce high-quality magnesium oxide (MgO) by using the sulfuric …
The use of sulfuric acid slag instead of iron ore powder as a flux for cement firing is a direction of its comprehensive utilization, especially suitable for low iron content or sulfur, arsenic. Such as sulfuric acid slag treatment with more impurities. Utilization method of sulfuric acid slag 2: extracting valuable metals
An energy-efficient route was adopted to treat titanium-bearing blast furnace slag (TBBFS) in this study. Titanium, aluminum, and magnesium were simultaneously extracted and silicon was separated by low temperature sulfuric acid curing and low concentration sulfuric acid leaching. The process parameters of sulfuric acid curing …
In this study, extraction characteristics of Cu, Co, Zn and Fe from copper converter slag by oxidative leaching with potassium dichromate–sulphuric acid lixiviant were investigated. The ...
This paper provides a technical approach for efficiently recovering Mg from ferronickel slag to produce high-quality magnesium oxide (MgO) by using the sulfuric acid leaching method under …
Sulfur (as sulfuric acid) is also produced from sulfide ores (pyrites) by thermal decomposition in the absence of air, by roasting/smelting under reducing conditions, or by reaction of the ore with SO 2. Hydrometallurgical processes have produced sulfur from metal pyrites as a by-product sulfuric acid.
The comparative experiment about sulfuric acid leaching manganese-rich slag under normal pressure and high pressure was carried out in the same process conditions as follows: mass ratio of manganese-rich slag to pyrite 20:1, sulfuric acid concentration of 140 g/L, time 60 min, and L/S 7:1; the results of the comparative …
Acorrding to equation (1), sulfuric acid not only provides medium for the reaction, but also participates in the reaction. As a consequence, sulfuric acid exerts a remarkable effect on the leaching reaction. This result is in agreement with the results previously reported in the leaching of low-grade pyrolusite ore [21].
oxidative leaching system with sulfuric acid to extract cop-per from a smelting slag. Their ndings demonstrated that the leaching kinetics of copper was controlled by chemi-cal …
DOI: 10.1016/J.HYDROMET.2014.04.003 Corpus ID: 98682809; Leaching kinetics of lanthanum in sulfuric acid from rare earth element (REE) slag @article{Kim2014LeachingKO, title={Leaching kinetics of lanthanum in sulfuric acid from rare earth element (REE) slag}, author={Chul-Joo Kim and Ho-Sung Yoon and Kyung …
Semantic Scholar extracted view of "Leaching of vanadium from LD converter slag using sulfuric acid" by M. Aarabi-Karasgani et al. Skip to search form Skip to main ... pig iron from steel manufacturing plants contains a high concentration of vanadium-bearing materials smelted with iron ore. During the oxidation process of the molten pig iron ...
In order to utilize low-grade manganese ore resources effectively, a hydrometallurgical process was developed for manganese extraction in dilute sulfuric acid medium, and the kinetics of leaching ...
The aim of this study is to investigate sulphuric acid leaching of copper converter slag in the presence of dichromate which is an efficient oxidant. In this regard, the effects of the concentration of sulphuric acid and dichromate on the recovery of metals were examined. ... Maden, Elazig, Turkey. The slag sample was crushed in a jaw …
Life Cycle Assessment (LCA) methodology is the most widely used to study the environmental impacts throughout the life of the study system from the extraction of the raw materials to the end of life (from cradle to grave). LCA is an ISO methodology (14040–14044) and determines the environmental performance of a product, a process …
smelting slag was estimated in the range from 12.77 to 17.34 kJ/mol. Keywords Direct-to-blister copper · Flash smelting slag · Decopperization · Grinding · Sulfuric acid leaching. 1 ...
4 acid concentration, N 0.5 3.5 5 Reductant weight, g 10 20 6 temperature, ºC 30 90 2. MATERIALS AND METHODS The ferromanganese slag, procured from a local ferroalloy company was first broken into small pieces using a disintegrator then fed to a roll crusher followed by a ball mill for fine grinding.
The slag at the end of the copper blow and after the oxidation step in AF are circulated directly to an empty converter. SO2 rich off-gases from FSF and PSCs are ducted to the …
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By means of energy-dispersive X-ray spectroscopy (EDX) and scanning electron microscope (SEM) analysis, the phase structure characteristics of high titanium slag were analyzed. Through the single factor and the orthogonal experiment methods, the effects of material particle size, mass ratio of acid to ore, roasting temperature, and …
In this study, the reject fraction of the jaw crusher, located in the first part of the crushing circuit, is used as a considerable stock in copper tank-leaching plant. High market value of copper and ease of practice were the motivating forces on studying the leaching kinetics under controlled conditions. In this regard, first, the influencing …
A study on the sulphuric acid leaching of copper converter slag in the presence of dichromate. ... Elazig, Turkey. The slag sample was crushed in a jaw crusher and ground in a ball mill and then sieved. The fraction of −74 μm (200 mesh) was used in all experiments. Particle size distribution analyses indicated that the mean particle diameter ...
2.1 Materials and reagents. All the reagents used in the experiment, such as sulfuric acid (H 2 SO 4), nitric acid (HNO 3), copper sulfate (CuSO 4), sodium thiosulfate (Na 2 S 2 SO 3), and sodium hydroxide (NaOH), were analytically pure, and the water used in the whole experiment was deionized water with the electrical resistivity of 18.5 …
Models with 3,000lb per hour (1,361kg) or 8,000lb per hour (3,629kg) capacity reduce most materials from 0.5in (13mm) feed size to minus No. 10 (2mm). We have a wide selection …
To get 100 Mineral Sludge from Mineral Slurry, I need 10 slag & 24 Sulfuric Acid. The sulfur feedback loop seems to be self sustaining which is quite convenient. ... if the ratios produced by the ore crushers fits the 1:2 ratio of the liquifiers then you don't need 2 output belts and filter inserters. Well, maybe still 2 belts (or red) for the ...