Results 211 to 220 of about 46,745 (267)

Mechanisms of ultrasonic enhanced co-leaching of U and REEs from low-grade uranium resources. [PDF]

Ultrason Sonochem
Zeng J, Liu C, Li M, Ma Y, Zhou X, Wang X, Sun Z, Luo X, Zhou Z.   +8 more
europepmc   +1 more source

Dechlorination of fly ash through co-leaching with organic waste: effect of inoculum. [PDF]

RSC Adv
Wang X, Zou D, Wu C, Gao Y, Liu J, Wang Q.   +5 more
europepmc   +1 more source

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Dephosphorization of high phosphorus oolitic hematite by acid leaching and the leaching kinetics

Hydrometallurgy, 2017
Abstract It is highly difficult to remove phosphorus from high phosphorus oolitic hematite by the usual dressing process. Acid leaching is an effective method for the dephosphorization of high phosphorus oolitic hematite. The acid leaching experiments were conducted to study the effect of acid concentration, temperature, leaching time, solid-liquid ...
Guangqiang Li
exaly   +2 more sources

Acid leaching of chromite

Minerals Engineering, 1994
Abstract The kinetics of the chemically controlled reaction between chromite and sulphuric acid, to form chromium(III) sulphate has been studied in the temperature range 140° – 210°C. The effect of temperature, sulphuric acid concentration and perchloric acid addition on the rate of dissolution of chromium has been studied.
E. Vardar, R.H. Eric, F.K. Letowski
openaire   +1 more source

Recovery of vanadium from calcification roasted-acid leaching tailing by enhanced acid leaching

Journal of Hazardous Materials, 2019
Vanadium contained tailing generated from the typical calcium roasting-acid leaching process is contaminant and waste of resource. Atmospheric and pressurized leaching were conducted and compared to recover the vanadium from the vanadium tailing and improve the tailing's environmental quality.
Ying, Zhang, Ting-An, Zhang, David, Dreisinger, Changxiao, Lv, Guozhi, Lv, Weiguang, Zhang   +5 more
openaire   +2 more sources

Effects of acid leaching on halloysite

2015
Physicochemical Problems of Mineral Processing; ISSN 2083 ...
Saklar, Saruhan, Yorukoglu, ABDULKERİM
openaire   +2 more sources

Leaching of pyrrhotite with hydrochloric acid

Canadian Metallurgical Quarterly, 1972
AbstractWhen nonstoichiometric pyrrhotite is leached under nonoxidizing conditions in warm aqueous solutions containing HCl, both hydrogen sulphide and elemental sulphur are formed. The amount of sulphur is proportional to the nonstoichiometry of the pyrrhotite.
T.R. Ingraham, H.W. Parsons, L.J. Cabri
openaire   +1 more source

Acid leaching of CaOSiO2 resources

Journal of Industrial and Engineering Chemistry, 2013
Abstract Waste resources containing CaO and SiO2 were leached by an acetic acid solution. Most CaO exist as calcium aluminosilicate and calcium silicate in steel slag and wollastonite, respectively. Silicate leaching was enhanced steeply by heating to 50 °C or increasing acid concentrations to 4 wt%. The Si and/or Al in the leachate then precipitated
Hyun Kyu Park, Myung Won Bae, Ik Hyun Nam, Sun-Geon Kim   +3 more
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Acid Leaching of Thorium Carbide

Nature, 1962
Overnight acid leaching experiments were carried out on ThC/sub 2/ with HCl, H/sub 2/SO/sub 4/, and HNO/sub 3/. For 0.5 to 12 N HCl at room temperature, ThC/sub 2/ disintegrated spontaneously and dissolved 100%. For H/sub 2/SO/sub 4/ at room temperature, ThC/sub 2/ dissolved 100% in 0.5 to 3 N, but at higher concentrations, the solubility decreased to ...
YASUICHI SASAKI, FUJIO ICHIKAWA, HISASHI IMAI, SHINOBU URUNO   +3 more
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A review of acid leaching of uraninite

Hydrometallurgy, 2015
Abstract Uraninite is mined/processed more than any other uranium mineral for the production of uranium based compounds that are subsequently used to produce nuclear fuel. This review article provides a concise account of the available literature on one of the major processes involved in processing uraninite bearing ores, acid leaching.
Suresh K. Bhargava, Rahul Ram, Mark Pownceby, Stephen Grocott, Bob Ring, James Tardio, Lathe Jones   +6 more
openaire   +1 more source