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The process of calcination derives its name from the Latin calcinare (to burn lime) due to its most common application, the decomposition of calcium carbonate to calcium oxide and carbon dioxide, in order to create product of calcination is usually referred to in general as "calcine", regardless of the actual minerals undergoing thermal treatment.
Abstract: The invention is primarily directed to the production of a substantially iron free aluminasilica product and substantially iron free aluminum chloride from bauxites, bauxitic clays and kaolinitic clays wherein the feed material to an agglomeration stage is selected to contain a minimum of about 20% kaolinite mineral. The agglomerates are so formed to produce a product that is
How to Cite. Kulunk, B. and Guthrie, R. (2013) On the Kinetics of Removal of Sodium from Aluminum and AluminumMagnesium Alloys, in Essential Readings in Light Metals: Cast Shop for Aluminum Production, Volume 3 (eds J. F. Grandfield and D. G. Eskin), John Wiley Sons, Inc., Hoboken, NJ, USA. doi: /
Wendell E. Dunn, Jr: Selected Patents. 5,004,500 Chlorination process for recovering gold values from gold alloys Filed: February 13, 1989 4,390,400 Aluminum chloride addition to electrolytic cells Filed: May 26, 1981 4,389,391 Process for beneficiating titaniferous ores Filed: June 28, 1981
Request PDF | Carbochlorination Kinetics of HighAlumina Fly Ash | The carbochlorination kinetics of highalumina fly ash was investigated. The influence of reaction temperature, time, carbon
Understanding the extent and kinetics of redox reactions involving Febearing clay minerals has been challenging due to the inability to relate structural Fe(2+)/Fe(total) fractions to fundamental redox properties, such as reduction potentials (EH). Here, we overcame this challenge by using mediated electrochemical reduction (MER) and oxidation (MEO) to characterize the fraction of redox
The increasing demand for pure aluminum and aluminum compounds of industrial quality from kaolinite ore cannot be overemphasized. Nigeria is one of the African countries endowed with abundant solid mineral resources that have not been sufficiently exploited to assist its indigenous industries. A wide array of applications of pure aluminum and its compounds are available, such as paper filling
Via chlorination roasting followed by a water leaching process, Y and Eu can be decomposed and extracted efficiently (Yu et al., 2016). Leaching kinetic studies of rare earth elements from secondary sources have been carried out in recent years. Yang et al. (2014) reported that leaching kinetics of rare earths from waste nickelmetal
REDUCTIVE CHLORINATION OF ACTIVATED ORES CONTAINING HIGH MELTIN METALS. Full Record; Other Related Research; Inventors: Lerner, Publication Date: Tue Oct 19 00:00:00 EDT 1965 Research Org.: Originating Research Org. not identified OSTI Identifier: Patent Number(s): US Assignee: to Dominion Gulf Co. DTIE; NSA NSA Number: NSA
· Kinetics and Products of Chromium(VI) Reduction by Iron(II/III)Bearing Clay Minerals. JoeWong C(1), Brown GE Jr(1)(2), Mer K(1). Author information: (1)Department of Geological Sciences, School of Earth, Energy Environmental Sciences, Stanford University, Stanford, California 94305, United States. (2)Department of Photon Science and Stanford Synchrotron Radiation
Sulphate ions removal from an aqueous solution: I. Coprecipitation with hydrolysed aluminumbearing salts Aluminumbearing salts Coprecipitation abstract The removal of sulphate ions constitutes one of the main challenges in the mining, metallurgical and chemical industries, among others. Sulphate removal from aqueous streams is by far one of the most difficult and onerous tasks
The kinetics of chlorination of alumina and bauxite with CO/Cl//2 mixtures were studied in the range degree C. The temperature of prior calcination is critical in determining the reaction
The carbochlorination behavior of other aluminum bearing minerals (gamma and alpha alumina and kaolin) is compared with plagioclase. Preliminary results of fluidized bed chlorination of plagioclase and alpha alumina indicate that this approach is not feasible. Original language: English (US) Title of host publication: Unknown Host Publication Title: Editors: Patrick R. Taylor, Hong Yong Sohn
Chlorination can be an efficient alternative for the physical beneficiation of refractory metals'' bearing materials. The chlorination of a chromite mineral was studied up to 1050 °C using thermogravimetric analysis. The effects of the gas flow rate, temperature and partial pressure of the reactive gases on the reaction rate were studied in isothermal conditions.
Kinetic study on the chlorination of βspodumene for lithium extraction with Cl2 gas Article in Thermochimica Acta 557:61–67 · April 2013 with 23 Reads How we measure ''reads''
Kinetic study of the chlorination of niobium oxide was carried out in a fixedbed reactor under temperatures from 800 to 1000°C and normal pressure. Thermodynamic simulation was performed to analyze the reaction system. Reactants introduced were niobium (V) oxide powder and gaseous chlorine with carbon monoxide as reductant. The chlorination products were all in gaseous phase under the
The application of the chlorination processes to clays and kaolins has also been studied in order to use these minerals as aluminum source (Blumenthal and Wegner, 1989;Roder et al., 1987;Landsberg
This "Cited by" count includes citations to the following articles in Scholar. The ones marked International Journal of Minerals, Metallurgy, and Materials 24 (4), 444454, 2017. 7: 2017 : A novel rapid mist spray technique for synthesis of single phase precipitated calcium carbonate using solidliquidgas process. JA Onimisi, R Ismail, KS Ariffin, N Barun, HB Hussin. Korean Journal of
The initial laboratory tests to extract TiC from titaniumbearing minerals were conducted using a sample of perovskite. The high CaO content ( pct) precluded treating perovskite by direct chlorination since CaCl2 accumulates as a liquid in the chlorination reactor and plugs the fluidized bed. Preliminary thermodynamic data (figure 1), however, indicated that the perovskite could be reacted
Selective chlorination method for mixtures of metallic oxides of natural or synthetic origin A selective chlorination method of a mixture of simple or complex metallic oxides, comprising at least one of the elements to be used, iron, aluminum, titanium and silicon, as well as the 7 :
An improved method of producing anhydrous aluminum chloride via aluminum chloride hexydrate is provided. In a preferred embodiment the method is incorporated into a process for producing aluminum from aluminous ores, and particularly from domestic ore sources comprising (1) acid leaching an aluminous ore to produce aluminum chloride hexydrate (ACH); (2) calcining the ACH to a specific
pares the properties of lithium with those of steel and aluminum, the dominant structural metals, and with those of magnesium and titanium, both considered too pricey for mainstream structural Table II reports world production figures for these five –4 Even though the world production of lithium amounts to only 12,500 tonnes per year, the high unit price of the metal
The selective chlorination process of prereduced limonitic nickel laterite using hydrogen chloride was investigated in this work. In HCl–O 2 –H 2 O–N 2 atmosphere, the effects of variations in temperature, the partial pressures of hydrogen chloride, oxygen and water vapor, and total gas flow rate were all studied. It was found that the chlorination of nickel and cobalt could be
Carbochlorination of metal oxides with phosgene Carbochlorination of metal oxides with phosgene Adelman, D. J.; Burnet, George 00:00:00 Department of Chemical Engineering and Ames Laboratory United States Department of Energy Iowa State University Ames. IA 500 1 1 Introduction The use of polymetallic ores will become more important as the worldâ s supply of primary ores is depleted.
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