Stone Crushers, Rock Crushers, Screening and Crushing Machines
CALL TO SCHEDULE YOUR FREE!

MGB series Hopper Discharge Feeder

Vibrating feeder is also called vibrating feeder. In the production process,...

MZA/K Series Circular Vibrating Screen

MZA / K series vibrating screen is a new round vibrating screen product base...

MF Series Fixed Shaft Circular Vibrating Screen

MF Series vibrating screen is a new round vibrating screen product based on ...

MC Series Single-Cylinder Hydraulic Cone Crusher

MC series single cylinder hydraulic cone crusher is developed from European ...

MJ Series Jaw Crusher

MJ series jaw crusher is mainly used as coarse crusher. It is made of advanc...

ML Series Vertical Shaft Impact Crusher

Ml series impact sand making machine is a brand new structure of ML impact s...

MS Series Triaxial Horizontal Screen

MS series three-axis elliptical vibrating screen is an international level v...

MGD Series Vibrating Feeder

Vibrating feeder is also called vibrating feeder. In the production process,...

Leaching of nigerian iron ore i hydrochloric acid

  • Quantitative Leaching of a Nigerian IronOre in

    To the best of our knowledge, there is no reported works viz a viz the quantitative leaching of a Nigerian iron ore. Therefore, this work will provide data on the quantitative leaching and the kinetics of dissolution behaviour of the iron ore in hydrochloric acid solutions.

  • Quantitative Leaching of a Nigerian Iron Ore in

    Quantitative Leaching of a Nigerian Iron Ore in Hydrochloric Acid 1* ALAFARA, A. BABA; ADEKOLA, F A; FOLASHADE, A O. Department of Chemistry, University of Ilorin, P.M.B. 1515, Ilorin - Nigeria. E-mail: baalafara @ yahoo. ABSTRACT: A study on the quantitative leaching of iron ore in hydrochloric acid solution has been undertaken.

  • Application of the Shrinking Core Models to Hydrochloric

    alumina from Jordan clay using tetra-oxosulphate (vi) acid followed by hydrochloric acid dissolution has been studied and a very high purity of alumina was obtained [15]. In another work, the leaching of alumina from a Nigerian clay using hydrochloric acid has been studiedin order to obtain the thermodynamic parameters for the clay [8].

  • 3. Reviewing a Typical EIA for a Mining Project

    sulfate, lime, iron, calcium salts, and starches, may be added to increase the efficiency of the thickening process. Leaching is the process of extracting a soluble metallic compound from an ore by selectively dissolving it in a solvent such as water, sulfuric or hydrochloric acid,

  • Hydrometallurgical application for treating a Nigerian

    Nov 20, 2013· The dissolution kinetics of a Nigerian chalcopyrite ore in hydrochloric acid was studied in this article. Acid concentration, reaction temperature, and ore particle size were chosen as experimental parameters. The chemical and morphological studies of the ore before and after leaching at optimal conditions were carried out by X-ray diffraction (XRD) and scanning electron microscopy

  • Leaching and kinetics studies on processing of Abu-Ghalaga

    hydrochloric acid could be enhanced by reduction in solution using metal such as iron, zinc and tin [18]. In the present study,the hydrochloric acid agitation leaching of Abu Ghalaga ilmenite ore low grade titanium dioxide as well as the parameters affecting on the leachability which including acid

  • Atmospheric pressure leaching of nickel from a low-grade

    Fig. 3. The effect of the lixiviant type on nickel dissolution: sulfuric acid, hydrochloric acid. Operation conditions: 90 ºC, 2 h, S/L= 0.25 g/cm3, 300 rpm 3.3 Ni extraction by leaching 3.3.1 Effect of the type of acid A series of leaching experiments was conducted with different concentrations of sulfuric and

  • Metal Removal from Industrial Waste by Hydrochloric Acid

    Mar 01, 2020· Leaching of metals from industrial solid waste in hydrochloric acid, HCl solution was studied. In this study, the significant of parameters such as HCl concentration, temperature, liquid to solid ratio and leaching time on the removal percentage of metal impurities were investigated using response surface methodology (RSM) with central composite design (CCD).

  • MULTISTAGE DILUTE ACID LEACHING OF A MEDIUM GRADE

    The phosphorous laden Koton Karfe iron ore is a medium grade iron ore deposit in Nigeria that can be upgraded as a super-concentrate for use at the Aladja Steel Midrex plant. The 75 µm size sample fraction of the ore was pre-concentrated with shaking table and leached in the oven at atmospheric pressure with dilute hydrochloric acid in

  • Effect of Hydrochloric Acid on Leaching Behavior of

    Iran. J. Chem. Chem. Eng. Effect of Hydrochloric Acid on Vol. 25, No.2, 2006 49 are those from the genus Thiobacillus, specially T. ferro- oxidans and T. thiooxidans [18].T. ferrooxidans uses ferrous iron and reduced sulphur as energy sources and T. thiooxidans can only use sulphur compounds [19]. The

  • Article Research on high-pressure hydrochloric acid

    Feb 01, 2021· Research on high-pressure hydrochloric acid leaching of scan-dium, aluminum and other valuable components from the non-magnetic residues obtained from red mud after iron re-moval Dmitry Zinoveev 1,*, Pavel Grudinsky 1, Ekaterina Zhiltsova 1,2, Darya Grigoreva 1, Anton Volkov 3, Valery Dyu-banov 1 and Alexander Petelin 4

  • Quantitative Leaching of a Nigerian Iron Ore in

    Dec 31, 2005· Quantitative Leaching of a Nigerian Iron Ore in Hydrochloric Acid Sciences and Environmental Management (ISSN: 1119-8362) Vol 9 Num 3. Abstract (summary): A study on the quantitative leaching of iron ore in hydrochloric acid solution has been undertaken. The elemental composition of the iron ore was also carried out using ICP-MS technique

  • Titanium Dioxide Production by Hydrochloric Acid

    C. Leaching Leaching of roasted ilmenite products were carried out by hydrochloric acid solution at various concentrations. In the case of original ilmenite, the main iron cations are in the ferrous form, which are easier to dissolve, they have to migrate to the surface to be leached.

  • Hydrochloric Acid Leaching of Iron from Aluminous Clays

    Aug 09, 2019· The iron content of Pennsylvania aluminous clays can be appreciably lowered by means of hydrochloric acid leaching. The optimum leaching conditions are: 19% hydrochloric acid at the boiling point of the acid, 104 °C; 10% pulp density; and 10-30 minutes leaching time. The alumina losses are relatively small.

  • Optimization of Ilmenite Dissolution by Synergistic Effect

    Acid leaching of ilmenite ore was carried out using HCl acid with a concentration of 37% (w/w) and oxalic acid with a concentration of 99% (w/w) in a 300 cm 3 three-neck glass reactor equipped with a reflux condenser and a mechanical agitator with Teflon-coated stirring rod. A stirring speed of 560 RPM was applied to keep the slurry suspended

  • A Method for Leaching or Dissolving Gold From Ores or

    Aug 18, 2005· The aqueous solution of hydrochloric acid 32 wt.% HCl (20Be) was prepared by dilution from ACS-grade hydrochloric acid 37 wt.% purchased from

  • US2584700A - Treatment of iron ore containing impurities

    US2584700A US45862A US4586248A US2584700A US 2584700 A US2584700 A US 2584700A US 45862 A US45862 A US 45862A US 4586248 A US4586248 A US 4586248A US 2584700 A US2584700 A US 2584700A Authority US United States Prior art keywords iron chromium nickel ore leaching Prior art date 1948-08-24 Legal status (The legal status is an assumption and is not a legal conclusion.

  • Upgrading of a Nigerian Vermiculite-Phillipsite Rich Talc

    Feb 11, 2021· The concentrate after leaching with a hydrochloric acid solution at optimal leaching conditions (1.5 M HCl, 70 °C, 90 + 75 μm, and 120 min) gave 68% dissolution efficiency. 3. The dissolution kinetics of the talc ore investigated showed an increase in dissolution rates with increasing hydrochloric acid concentration, reaction temperature

  • Atmospheric pressure leaching application for the recovery

    It was found that sulphuric acid was the most efficient and widely used acid for leaching oxides, as compared to hydrochloric and nitric acid (Teir et al., 2007; Habashi, 1999; Habashi, 2003). In the leaching oxide ores and tailings, acid consumption can be escalated by the presence of gangue minerals such as silica, mica, calcite, pyroxene

  • Dephosphorization of Nigerian Agbaja Iron Ore by

    proven Nigerian iron ore deposit with phosphorus content in the range of 1.4-2.0%. In this study, dephosphorization of Agbaja iron ore using three acids and in different combinations were investigated. The design of experiment for the valuation of interactive factorial effects on

  • Alafara, A. Baba; Adekola, F A; Folashade, A. O

    Iron oxide in samples of clay containing 8.15% iron oxide was leached in aqueous oxalic acid and hydrochloric acid solutions. Leaching experiments were conducted in the temperature range of 4080°C for times up to 90 minutes in 0.2 M to 2 M acid solutions.

  • Dissolution Kinetics and Leaching of Rutile Ore in

    Experiments on the dissolution kinetics and leaching of rutile ore by hydrochloric acid have been carried out. The influence of acid concentration, temperature, stirring speed and particle diameter on the leaching of the ore were examined. The dissolution rates were greatly influenced by the hydrogen ion concentration, temperature, stirring speed and particle diameter.

  • Leaching of a Nigerian Columbite in Hydrochloric Acid

    Jan 03, 2012· Arrhenius constant of the columbite dis solution in nitric acid, respectively and the order of reaction was 0.35. The present investigation was therefore aimed a t establish ing the conditions for the leaching of the same columbitemineral ore in hydrochloric acid media. 2. Experimental 2.1. Material

  • WO2007074360A2 - Leaching process in the presence of

    A process is described for leaching a value metal from an ore containing said value metal, the process including the steps of leaching the ore in the presence of hydrochloric acid so as to form a soluble metal-chloride salt in a leach solution; adding sulphuric acid and/or sulphur dioxide to the leach solution; recovering a solid metal-sulphate or metal-sulphite salt from the leach solution

  • Leaching of a Nigerian Columbite in Hydrochloric Acid

    Jan 03, 2012· This paper presents the kinetics of dissolution of a Nigerian columbite mineral ore sample in hydrochloric acid media. The effects of acid concentration, process temperature, stirring rate and particle size on the dissolution rate were examined. Experimental results showed that the columbite dissolution increases with increasing acid concentration, temperature, stirring speed and decreases

  • Efficiencies of Acid Digestion/Leaching Techniques in the

    University Kano, Nigeria E mail: [email protected] Tel: +2348039092875 3 hydrochloric acid was added after cooling and the resulting solution was boiled for 10 minutes. It was filtered, made up to mark with de-ionized water in a iron in soil samples analyzed by leaching and digestion techniques. The results show differences in Iron

  • CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

    in Table 1. As shown in this table, by flotation of the ore with 3.770 g/Mg gold, a con-centrate containing 20.451 g/Mg gold was obtained. After 24 hours, direct cyanide leaching of the initial ore resulted in only 54.8% gold recovery. However, cyanidation after dissolving the ore sample in hydrochloric acid (HCl), sulfuric acid (H 2 SO 4

  • Solvent Extraction of Gold from Hydrochloric Acid-Leached

    Keywords : Gold ore, Nigeria, dissolution kinetics, solvent extraction, gold, hydrochloric acid, tributylphosphate. 1. Introduction Gold is widely distributed throughout the world, normally in very low concentration and generally in native form as metal. It is usually alloyed with silver and often contains small amount of copper.

  • Dissolution Kinetics and Leaching of Rutile Ore in

    Dissolution Kinetics and Leaching of Rutile Ore in Hydrochloric Acid Alafara A. Baba1*, Folahan A. Adekola1, Emmanuela E. Toye1 and Rafiu B. Bale2 1Department of Chemistry, University of Ilorin, P.M.B 1515, Ilorin-Nigeria. 2Department of Geology and Mineral Sciences, University of Ilorin, P.M.B 1515, Ilorin-Nigeria.

  • Reductive dissolution of hematite in hydrochloric acid

    Reductive dissolution of hematite in hydrochloric acid medium by some inorganic and organic reductants: A comparative study of chemistry, viz., leaching of oxide ores in hy- from Barsua Iron Ore Mines, Sundargarh, Orissa, though a considerable amount of studies have charging samples and withdrawing leach liquor.

  • Model for the Calculation of the Concentration of

    leaching of iron oxide ore in hydrochloric acid solution. The model is expressed as: T = e(8.9055/ γ) (4) where T= Solution temperature during leaching of iron oxide ore using hydrochloric acid.(0C) N= 8.9055(pH coefficient for hydrochloric acid solution during leaching of iron oxide ore

  • Selective leaching of nickel from prereduced limonitic

    In this paper, the selective acid leaching of nickel from the pre-reduced limonitic laterite under moderate HPAL conditions was studied. For the calcine with reduction degree of 93.4%, about 88.2% nickel could be selectively extracted at 100°C with an acid/ore ratio of 0.164, leaving less then 5.0g/L iron in the solution. Further

  • Quantitative Leaching of a Nigerian Iron Ore in

    Dec 31, 2005· Quantitative Leaching of a Nigerian Iron Ore in Hydrochloric Acid Sciences and Environmental Management (ISSN: 1119-8362) Vol 9 Num 3. Abstract (summary): A study on the quantitative leaching of iron ore in hydrochloric acid solution has been undertaken. The elemental composition of the iron ore was also carried out using ICP-MS technique

  • Quantitative Leaching of a Nigerian Iron Ore in

    quantitative leaching of a Nigerian iron ore. Therefore, this work will provide data on the quantitative leaching and the kinetics of dissolution behaviour of the iron ore in hydrochloric acid solutions. This work is interesting from the industrial perspective, as it could provide optimum conditions for the commercial production of ferric

  • A Method for Leaching or Dissolving Gold from Ores or

    hydrochloric acid with strong oxidizing compounds are known to generate in-situ nascent chlorine which is capable of dissolving gold efficiently. In this study, the authors investigated the capability of a hot mixture of hydrochloric acid and ground manganese (IV) oxide to dissolve gold metal either under atmospheric or pressurized conditions.

  • Kinetics of Leaching of Iron Oxide in Clay in Oxalic Acid

    leaching in oxalic acid was found to be 41.035 kJ/mole while that for hydrochloric acid was 50.82 kJ/mole. Keywords: clay washing, iron oxide leaching, oxalic acid, hydrochloric acid, kinetic model, activation energy . Cite This Article: U K Sultana, Fahmida Gulshan, and . A S W Kurny, Kinetics of Leaching of Iron

  • Kinetics of Leaching of Iron Oxide in Clay in Oxalic Acid

    Feb 11, 2014· Iron oxide in samples of clay containing 8.15% iron oxide was leached in aqueous oxalic acid and hydrochloric acid solutions. Leaching experiments were conducted in the temperature range of 4080°C for times up to 90 minutes in 0.2 M to 2 M acid solutions. The mixed kinetic mechanism seemed to be the most appropriate model to fit the kinetic data of leaching in oxalic acid while

  • Prof. Alafara A. BABA, FCSN, FMSN, MTMS (USA) - Google

    Quantitative leaching of a Nigerian iron ore in hydrochloric acid AA Baba, FA Adekola, AO Folashade Journal of Applied Sciences and Environmental Management 9 (3), 15-20 , 2005

  • Reaction phenomena of iron oxide leaching in an

    (1999). A kinetic study of the leaching of a Nigerian ilmenite ore by hydrochloric acid. (1976). A kinetic study on the dissolution of Allard Lake ilmenite in hydrochloric acid. (2004). Acid-base ionisation and metal complexation under hydrothermal conditions by UV-visible and Raman spectroscopy. (2002).

  • Professor Folahan Amoo ADEKOLA , FRSC - Google Scholar

    Quantitative leaching of a Nigerian iron ore in hydrochloric acid AA Baba, FA Adekola, AO Folashade Journal of Applied Sciences and Environmental Management 9 (3), 15-20 , 2005

  • Zirconium in Hydrochloric Acid Applications

    hydrochloric acid is available at concentrations up to 37%. Hydrochloric acid is highly corrosive and attacks most common metals including iron, stainless steel and lead. Stainless steels and high performance alloys can only be used to handle very dilute and/or low temperature HCl solutions. Zirconium has proven to be an outstanding metal for

  • (PDF) Quantitative leaching of a Nigerian iron ore in

    Abstract A study on the quantitative leaching of iron ore in hydrochloric acid solution has been undertaken. The elemental composition of the iron ore was also carried out using ICP-MS technique. The major elements in the iron ore include: Fe

  • A kinetic study of the leaching of a Nigerian ilmenite ore

    Jul 01, 1999· A kinetic study of the leaching of powdered ilmenite ore by hydrochloric acid has been investigated. The effects of (a) stirring speed ranging from 100 to 500 min 1, (b) particle size ranging from 20 to 74 μm, (c) acid concentration ranging from 7.2 to 9.6 M and (d) temperature ranging from 70 to 90°C on titanium and iron dissolution are reported.