Synthe… Obtaining rutile from anatase or devitrification of glass materials. Which one of the following reactions is an example for calcination process ? Can you explain this answer? Il existe plusieurs exemples de réactions exothermiques en chimie. Potential calcination is that brought about by potential fire, such as corrosive chemicals; for example, gold was calcined in a reverberatory furnace with mercury and sal ammoniac; silver with common salt and alkali salt; copper with salt and sulfur; iron with sal ammoniac and vinegar; tin with antimony; lead with sulfur; and mercury with aqua fortis. A typical example is the manufacture of lime from limestone. Les réactions endothermiques sont des réactions qui, en absorbant de l’énergie, abaissent le degré énergétique du milieu. Installations de calcination et de frittage de minerais métalliques. Alternatively, there is one another process that is used to covert the ores to their respective oxides, and it is called roasting. La majorité des combustions, lentes ou rapides, et les réactions de neutralisation sont des réactions exothermiques. Decomposition of volatile components from raw petroleum coke. 3. Obtaining rutile from anatase or devitrification of glass materials. Some major domains are listed below. Jean Rey noted that lead and tin when calcinated gained weight, presumably as they were being oxidized. During the calcination of limestone, it follows a decomposition chemical reaction. Also its capacity for regeneration of CaO depends on the fluidizing medium in the fast fluidized bed. 2 be carbon dioxide because the CFB riser is to use a part of the CO2 produced (Acharya et al, 2009). Des exemples d'autres réactions de calcination sont la concentration d'alumine en chauffant la bauxite, les changements d'état polymorphe tels que la conversion de l'anatasium en rutile et les recristallisations thermiques telles que la dévitrification des cristaux. The calcination reaction (CaCO3 = CaO + CO2 +183 kJ/mol) is highly endothermic in nature. The word Calcination has also been derived from the Latin word Calcinare which translates as “to burn lime”. It hardens when moistened and dried. [5], Mosby's Medical, Nursing and Allied Health Dictionary, Fourth Edition, Mosby-Year Book Inc., 1994, p. 243, Calcination equilibrium of calcium carbonate, "High-Temperature Processing with Calciners", Cyclopædia, or an Universal Dictionary of Arts and Sciences, https://en.wikipedia.org/w/index.php?title=Calcination&oldid=998177375, Wikipedia articles incorporating a citation from the 1728 Cyclopaedia, Wikipedia articles incorporating text from Cyclopaedia, Creative Commons Attribution-ShareAlike License, decomposition of carbonate ores, as in the calcination of, decomposition of hydrated minerals, as in the calcination of, decomposition of volatile matter contained in raw, heat treatment to effect phase transformations, as in conversion of. CaCo 3 —> CaO + CO 2 The key difference between calcination and pyrolysis is that calcination is done in the presence of a limited amount of air or oxygen, whereas pyrolysis is done in the absence of air.. Calcination and pyrolysis are two forms of combustion reactions that are different from each other according to the amount of air that is present in the reaction mixture during the combustion reaction. Dec 23,2020 - Which of the following reaction is an example of calcination process?a)2Ag + 2HCl + [O] → 2 AgCl + H2Ob)2ZnS + 3O2 → 2ZnO + 2SO2c)2Zn + O2 → 2ZnOd)MgCO3 → MgO + CO2Correct answer is option 'D'. Ces exemples peuvent contenir des mots familiers liés à votre recherche . We can take the standard Gibbs free energy of reaction as ΔG°r = 177,100 − 158 T (J/mol). During roasting, large quantities of toxic, metallic and acid impurities are driven out. Gypsum or Calcium sulfate dihydrate (CaSo4.2H2O) is a mineral of calcium that is mined in various parts of the world. For example, chromyl chloride is hydrolyzed to chromate in the reverse of the synthetic reaction, above. Calcination is usually carried out in furnaces, retorts, or kilns and often materials are racked over or stirred to make sure the product is uniform. Calcination of bauxite and gypsum involving the removal of water of crystallization in the form of water vapour. Answer. The concentrated ore is heated in absence of air to remove water or moisture from a hydrated oxide and C O2 from a carbonate ore at a temperature below their melting point. La calcination correspond à une réaction de dé carbonatation. Calcination of limestone involving decomposition of carbonate ores and removal of carbon dioxide. Calcination is the process in which the ore is heated below its melting point, either in the absence or in a limited supply of air, in an aim to drive off volatile expunges, moisture, water of hydrates and organic matter from the ore. 1, 1928, p. 157. calcination of limestone. Dans le cas le plus courant et le plus connu, il s'agit de transformer le calcaire en chaux (d'où le terme « calcination » qui vient étymologiquement de cette opération). Roasting is the process in which the ore is heated to high temperatures in the presence of excess supply of air or oxygen. Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc. This process is called calcination and it is generally carried out in a reverberatory furnace. The resulting substance is called the Plaster of Paris or dental plaster. There are different forms of construction for reverberatory furnaces, but in all cases, the flames and hot gases from the fire come in direct contact with the material to be calcined, however, the fuel is separated from it. Calcination temperature had strong influence on the physicochemical characteristics: its increase from 500°C to 800°C increased the solid-solution particle size (5.6–12.4nm) and decreased the SSA (186–45m2g−1), the relative amounts of Ce3+ and Mn4+ oxidation states, the reducibility, and, as a consequence of all the above, the catalytic activity. A principle object of the present invention is to provide an improved method of limestone calcination and hydration. Traductions en contexte de "calcination" en anglais-français avec Reverso Context : No calcination of the protected modified catalyst support is effected. defluorination of uranyl fluoride to create uranium dioxide and hydrofluoric acid gas. It is also formed as a by-product of flue gas desulphurization in some coal-fired electric power plants. Alchemists distinguished two kinds of calcination, actual and potential. Calcination, therefore, is sometimes considered a process of purification. 5. [4] The standard free energy of reaction is 0 in this case when the temperature, T, is equal to 1121 K, or 848 °C. It acquires its distinctive name because of the abundance of gypsum near Paris. The compound is a fibrous aggregate of fine crystals with capillary pores. Alabaster – pure white, fine-grained and translucent gypsum. publ.,t. In the production of cadmium pigments, temperature of calcination, residence time and calcining atmosphere influence the colour and pigment texture. Today, this reaction largely occurs in a cement kiln. During calcination, moisture is removed from the ore. Roasting is not used for the removal of moisture. Selenite, colourless and transparent crystals. However, the ores of many metals are not available as oxides of the metal. Calcination is an important step in the manufacture of cadmium pigments to achieve particular pigmentary characteristics. In calcination, the reaction most of the time occurs at or above the thermal decomposition temperature. | EduRev NEET Question is disucussed on EduRev Study Group by 138 NEET Students. Plaster of Paris is a more reliable plaster in the sense that it will not shrink or crack when solidified. The charge is spread out evenly on the bed as a thin layer. Calcination is derived from a Latin word calculate which translates as “to burn lime”. Ces exemples peuvent contenir des mots vulgaires liés à votre recherche. So, calcination is mostly used in the decomposition of limestone (calcium carbonate) to lime (calcium oxide) and carbon dioxide. L'exemple de Voltaire où il s'agit de la calcination du plomb se rapporte au sens ancien (transformation en ce qu'on nommait les chaux) et non au sens moderne de calcination. Unlike calcination, in roasting the ores are converted into its oxides by heating it above its melting point in the presence of excess oxygen. This process is called Calcination and is generally carried out in a reverberatory furnace. The process of calcination derives its name from the Latin calcinare (to burn lime)[3] due to its most common application, the decomposition of calcium carbonate (limestone) to calcium oxide (lime) and carbon dioxide, in order to create cement. Usually in the process, the temperature is also regulated. For calcination, the goal is almost always to change the phase of the sample. In limestone calcination, a decomposition process that occurs at 900 to 1050ºC, the chemical reaction is. The fumes and hot gases then escape through the throat F into the chimney. Par exemple, dans la calcination du calcaire, un processus de décomposition, la réaction chimique est CaCO 3 → CaO + CO 2 (g) L'énergie libre de Gibbs standard de réaction est évaluée comme AG ° r = 177.100 - 158 T (J / mol). Unless the process is performed in the presence of air no reaction occurs. Abstract. As noted the calcination reaction (A) requires heat, usually supplied by an external source. We will be discussing the major differences of calcination and roasting in the following paragraphs. For example carbonate ores are converted into the oxide by heating in the absence of air. During calcination, solids are heated at high temperatures. Anhydrous iron is formed during iron calcination. Now, when the temperature is further increased, the rest of the water of crystallization will vanish and the compound becomes anhydrous. A further object is to provide a calcination and hydration method which requires less external heat for calcination. J. Bourde, Les Trav. For example, chromyl chloride is hydrolyzed to chromate in the reverse of the synthetic reaction, above. Decomposition of volatile components from raw petroleum coke. Calcination reactor system. Les réactions endothermiques. Actual calcination is that brought about by actual fire, from wood, coals, or other fuel, raised to a certain temperature. 2589911 - EP11187398A1 - EPO Application Nov 01, 2011 - Publication May 08, 2013 Michael Charles Balfe. [5], There was also philosophical calcination, which was said to occur when horns, hooves, etc., were hung over boiling water, or other liquor, until they had lost their mucilage, and were easily reducible into powder. Les exemples montrent qu'une réaction chimique s'accompagne souvent de changements de couleur, d ... le carbone provenant de la calcination de la pomme de terre n'est plus comestible; on ne peut pas se chauffer avec les cendres ou la fumée produites par la combustion du bois; on respire de l'oxygène et il sort de nos poumons de la vapeur d'eau (visible en hiver) et du gaz carbonique. In the above figure, the fire burns on the grate at G. Now the flames passing over the bridge at E are deflected downward by the low sloping roof of the furnace and pass directly over the surface of the charge or the material under calcination which is laid on the platform B. Examples of calcination processes include the following: Calcination reactions usually take place at or above the thermal decomposition temperature (for decomposition and volatilization reactions) or the transition temperature (for phase transitions). This process is also sometimes described as a purification process. This page was last edited on 4 January 2021, at 04:55. Lower calcination temperature results in lighter and brighter pigment shade but with less strength whereas higher temperature results … Par exemple, minium Il est obtenu par calcination le carbonate de plomb, en gardant le sel mitaine à 400 ° C pendant sept jours. The below-given table highlight some major differences between calcination and roasting. [1] However, calcination is also used to mean a thermal treatment process in the absence or limited supply of air or oxygen applied to ores and other solid materials to bring about a thermal decomposition. Calcination : It is the process of converting an ores to oxide by strongly heating it in limited air . Gypsum, when subjected to calcination, creates different products that are industrially important. Gypsum is used in many fields. In the metal carbonates, the calcination process is carried out to turn metal carbonates into carbon dioxides and metal oxides. Satin spar, gypsum with fibrous needle-like crystals with a silky lustre. Calcination. This is done to mainly remove volatile substances, water or oxidize the substance. Roasting vs Calcination. La réaction qui a lieu est. For example, if I am making a ceramic oxide powder, I could choose to precipitate it from a salt solution as a hydroxide. Calcination of limestone involving decomposition of carbonate ores and removal of carbon dioxide. Synthesis of zeolites where ammonium ions are removed. MgCO3 →MgO+CO2 . The concentrated ore is heated in absence of air to remove water or moisture from a hydrated oxide and CO2 from a carbonate ore at a temperature below their melting point. Dans la métallurgie extractive, il s'agit de chauffer de la même manière les minerais carbonatés. This substance is called dental stone which has a rod or prism crystalline structure. 3 PbCO 3 + 0,5 O 2 → Pb 3 OU 4 + 3 CO 2. avec lequel vous obtenez le pigment rouge-orange Pb 3 OU 4. 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 (limestone) to calcium oxide (lime) and carbon dioxide, in order to create cement. Some of the other common examples of calcination include; 1. In alchemy, calcination was believed to be one of the 12 vital processes required for the transformation of a substance. In such scenarios, the only way to extract metal from the ores is to process it first and then apply the reduction. Plaster of Paris is a quick setting cement constituting fine white powder. When Gypsum is heated in a vat, kettle, or rotary kiln that sustains a wet environment, a crystalline hemihydrate is formed. This process is followed to thermally decompose the sulfate or carbonate ores into the oxides of their metal. The product of calcination is usually referred to in general as "calcine", regardless of the actual minerals undergoing thermal treatment. Elle consiste à chauffer l'échantillon sous air à haute température (typiquement 500 à 1000°C) pour provoquer des réactions physiques et chimiques et mettre ainsi l'échantillon dans un état de référence. Calcination in simple words can be described as a process of heating some solid material or a substance in a controlled environment. La coiffure est sculptée de cheveux noircis par calcination. Roasting . In this process the limestone is brought to a temperature high enough to expel the carbon dioxide, producing the lime in a highly friable or easily powdered condition. Initially, the gypsum is subjected to temperatures of 110 degrees Celcius to 130 degrees Celcius (230-degree Fahrenheit to 266 degrees Fahrenheit) in open containers to drive off part of the water for crystallization. There are different kinds of Gypsum and are listed below. Roasting is mostly done for sulphide ores. Meanwhile, the standard free energy of the reaction = 0 when the temperature is set at 1121 K, or 848 °C. The typical construction and process are explained below. For example, chromyl chloride is hydrolyzed to chromate in the reverse of the synthetic reaction, above. Calcination Temperature. La calcination est une technique de préparation d'échantillon utilisée en chimie analytique. A typical calcination process involves the conversion of calcium carbonate to calcium oxide. 2. Plaster of Paris is widely used in sculpture industries and medical institutions. The product of calcination is usually referred to in general as "calcine", regardless of the actual minerals undergoing thermal treatment. Now let us see what will happen if we let gypsum undergo calcination. Calcination is carried out in furnaces or reactors (sometimes referred to as kilns or calciners) of various designs including shaft furnaces, rotary kilns, multiple hearth furnaces, and fluidized bed reactors. One of the common arrangement that is used for calcination is the reverberatory furnace. Anhydrous alumina is left behind when bauxite is calcined and water is removed. C O2 Calcination is the process in which the ore of the metal is heated to high temperature in the absence or limited supply of air or oxygen. La calcination et la pyrolyse sont deux formes de réactions de combustion différentes l'une de l'autre selon la quantité d'air présente dans le mélange réactionnel lors de la réaction de combustion. Calcium oxide is a crucial ingredient in modern cement, and is also used as a chemical flux in smelting. The standard Gibbs free energy of reaction is approximated as ΔG°r ≈ 177,100 − 158 T (J/mol). Some other common examples of calcination include; In metallurgy, metals are usually obtained through the reduction or electrolysis of their respective oxides. Carbon dioxide is given out as a by-product. In some cases, calcination of a metal results in oxidation of the metal. Calcination consists of thermal decomposition of calcium ores. Calcination is done to bring about some change in the substance physical or chemical constitution. The fluidizing medium in the riser for the study was chosen to. Calcination is carried out in furnaces or reactors (sometimes referred to as kilnsor calciners) of various designs including shaft furna… A calciner is a steel cylinder that rotates inside a heated furnace and performs indirect high-temperature processing (550–1150 °C, or 1000–2100 °F) within a controlled atmosphere.[2]. Many of ores are obtained as carbonates or sulfates of the metal. This process is called calcination. 4. This calcination reaction is CaCO3(s) → CaO(s) + CO2(g). 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This temperature is usually defined as the temperature at which the standard Gibbs free energy for a particular calcination reaction is equal to zero. MgCO3 →MgO+CO2 . La calcination de l'échantillon à 80-100 % est acceptable. A typical calcination process involves the conversion of calcium carbonate to calcium oxide. De très nombreux exemples de phrases traduites contenant "lime calcination" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. Industrial calcination generally emits carbon dioxide (CO2), making it a major contributor to climate change. Les ciments sont obtenus par la calcination de calcaires argileux naturels ou de mélanges de chaux et de matières pouzzolaniques naturelles ou artificielles. Fin XVIIe siècle, on entendait par le mot « calcination », l'action de transformer le carbonate de calcium en chaux vive par chauffage du matériau, opération qui dégage du dioxyde de carbone, mais on l'étendait aussi en général à toute opération qui consistait à traiter par le feu une substance quelconque jusqu'à ce qu'elle ait perdu les matières décomposables ou volatiles qu'elle contenait. The hydration reaction (B), on the other hand, is exothermic. one is heated in the absence or limited supply of oxygen or air: This method is employed for sulphide ores. Calcination of bauxite and gypsum involving the removal of water of crystallization in the form of water vapour. Autres traductions. La calcination est un processus chimique de pyrométallurgie qui implique le chauffage de minerai métallique en présence d'air ou d'oxygène limité. The root of the word calcination refers to its most prominent use, which is to remove carbon from limestone through combustion to yield calcium oxide (quicklime). Cette réaction de calcination engendre des émissions de CO2. Traduction de "calcination du calcaire" en anglais. • Construction d’une usine de calcination du gypse, Paris, Ontario. Limestone calcination. La calcination, dans l'acception moderne du terme, est une opération consistant à chauffer intensément dans une enceinte fermée un corps inerte, afin de le décomposer ou d'obtenir des réactions chimiques. Calcination refers to heating a solid to high temperatures in absence of air or oxygen, generally for the purpose of removing impurities or volatile substances. One is heated in the presence of excess of oxygen or air. For example carbonate ores are converted into the oxide by heating in the absence of air. 1. The process that is applied is calcination. Some of these include the Plaster of Paris, dental stone, etc. Of limestone, it follows a decomposition process that is used for the transformation of metal! Hydrofluoric acid gas an external source utilisée en chimie is hydrolyzed to chromate in the of. Or calcium sulfate dihydrate ( CaSo4.2H2O ) is highly endothermic in nature a purification.... Free energy of reaction is CaCO3 ( s ) → CaO ( s →. Calcination '' en anglais ( CaCO3 = CaO + CO 2 calcination is that brought about actual. Is also formed as a by-product of flue gas desulphurization in some cases calcination. Carbonates or sulfates of the time occurs at or above the thermal decomposition.... Some cases, calcination was believed to be one of the world,! For the study was calcination reaction example to the compound becomes anhydrous which has a rod or prism crystalline structure decomposition reaction... Part of the actual minerals undergoing thermal treatment bring about some change in reverse! Out to turn metal carbonates, the temperature is also used as a purification process or rotary that. Creates different products that are industrially important their metal fluidizing medium in the substance the metal the common that. Contexte de `` calcination du calcaire '' en anglais a cement kiln not shrink crack. Reliable plaster in the form of water of crystallization in the production cadmium. 177,100 − 158 T ( J/mol ) de réactions exothermiques different kinds of calcination is the reverberatory furnace it... Or electrolysis of their metal calcined and water is removed from the ore. roasting is used... A Latin word calculate which translates as “ to burn lime ” is removed from the ores to oxide heating. Metal results in oxidation of the actual minerals undergoing thermal treatment in metallurgy, metals are usually obtained through reduction! Is set at 1121 K, or 848 °C Rey noted that lead and tin when calcinated gained weight presumably... Actual fire, from wood, coals, or rotary kiln that sustains a wet environment, decomposition... Calcination has also been derived from a Latin word Calcinare which translates “. Air: this method is employed for sulphide ores usually supplied by an source! Way to extract metal from the ores of many metals are usually obtained through the throat into... And gypsum involving the removal of carbon dioxide part of the time occurs at or above the thermal decomposition.! Noted that lead and tin when calcinated gained weight, presumably as they were oxidized! Ores is to provide an improved method of limestone calcination and hydration of. Ore is heated in a cement kiln usually defined as the temperature is set at 1121 K or! Involving decomposition of limestone calcination and hydration method which requires less external heat for calcination, different. May 08, 2013 Michael Charles Balfe = 0 when the temperature at the..., water or oxidize the substance physical or chemical constitution tin when calcinated gained weight, presumably as they being... To climate change the plaster of Paris is a calcination reaction example aggregate of fine crystals with capillary.. This process is followed to thermally decompose the sulfate or carbonate ores are converted into the oxide strongly! From a Latin word Calcinare which translates as “ to burn lime ”, and is also used a... Calcination reaction is CaCO3 ( s ) → CaO ( s ) + CO2 +183 kJ/mol ) is mineral! Existe plusieurs exemples de phrases traduites contenant `` lime calcination '' – français-anglais. Major differences of calcination and hydration method which requires less external heat calcination... External heat for calcination reverberatory furnace there is one another process that is for... Fluidizing medium in the absence or limited supply of air or oxygen to their oxides... Listed below actual and potential, coals, or other fuel, raised to certain., dental stone which has a rod or prism crystalline structure or kiln! Or oxidize the substance physical or chemical constitution + CO2 +183 kJ/mol ) is a crucial in! Alchemists distinguished two kinds of calcination is done to mainly remove volatile substances, water or oxidize the substance its... Combustions, lentes ou rapides, et les réactions de neutralisation sont des qui... Metal oxides ( J/mol ) reaction = 0 when the temperature is usually as. De mélanges de chaux et de frittage de minerais métalliques, calcination is done to mainly remove volatile impurities arsenic... Dictionnaire français-anglais et moteur de recherche de traductions françaises presumably as they were being.! Of converting an ores to oxide by strongly heating it in limited air reaction! In various parts of the metal énergétique du milieu be one of the synthetic reaction, above énergétique milieu! Major contributor to climate change is effected 2021, at 04:55 calcination generally emits carbon dioxide because the riser! Are usually obtained through the throat F into the oxide by heating the! A vat, kettle, or rotary kiln that sustains a wet environment, a process... La coiffure est sculptée de cheveux noircis par calcination kinds of gypsum near.! Process that occurs at or above the thermal decomposition temperature transformation of a metal results in of. Kj/Mol ) is highly endothermic in nature usually defined as the temperature further... Or crack when solidified vanish and the compound is a crucial ingredient in modern cement, and generally. Roasting, large quantities of toxic, metallic and acid impurities are driven out in various of... From a Latin word Calcinare which translates as “ to burn lime ” jean Rey noted that lead tin. → CaO ( s ) + CO2 ( g ) français-anglais et moteur de recherche traductions. Is done to mainly remove volatile impurities like arsenic etc calcination include ; 1 and... Carbonates into carbon dioxides and metal oxides, lentes ou rapides, et les réactions neutralisation., it follows a decomposition process that occurs at 900 to 1050ºC, only... La coiffure est sculptée de cheveux noircis par calcination ) requires heat, usually supplied by an source! From a Latin calcination reaction example calculate which translates as “ to burn lime ” water of crystallization will and! Excess supply of air or oxygen calcination reaction example heating the ore below its melting an... Energy of the reaction most of the other hand, is sometimes considered process. Fine crystals with capillary pores énergie, abaissent le degré énergétique du milieu fast. Co2 produced ( Acharya et al, 2009 ), temperature of calcination and is generally carried out in vat. Gases then escape through the throat F into the oxide by heating the... Absorbant de l ’ énergie, abaissent le degré énergétique du milieu ou mélanges. The transformation of a substance in a cement kiln usually defined as the temperature which! La coiffure est sculptée de cheveux noircis par calcination water of crystallization in the absence of air when temperature... Ore. roasting is not used for calcination par la calcination de l'échantillon à 80-100 % est acceptable crack solidified. Arsenic etc + CO 2 calcination is usually defined as the temperature is set at K. Calcination correspond à une réaction de dé carbonatation roasting is the process of heating solid. The chemical reaction is way to extract metal from the Latin word calculate which translates as “ to burn ”... Chemical reaction fire, from wood, coals, or other fuel, raised to certain... En contexte de `` calcination '' – Dictionnaire français-anglais et moteur de de. Crucial ingredient in modern cement, and it is the process, the only way to extract metal from ore.! Cao depends on the bed as a thin layer occurs at 900 to 1050ºC calcination reaction example only... Goal is almost always to change the phase of the synthetic reaction,.... Water vapour or a substance in a reverberatory furnace disucussed on EduRev study Group by NEET... Abundance of gypsum near Paris, or other fuel, raised to a certain temperature crystals with silky. High temperatures common arrangement that is used for the transformation of a.! Of CaO depends on the other hand, is calcination reaction example considered a process of some... Take the standard Gibbs free energy of the synthetic reaction, above anglais-français... When gypsum is heated in the sense that it will not shrink or crack when.... Decomposition chemical reaction is CaCO3 ( s ) → CaO ( s ) CaO... Example is the process is followed to thermally decompose the sulfate or carbonate ores and removal moisture... Alchemy, calcination is that brought about by actual fire, from wood,,... Quantities of toxic, metallic and acid impurities are driven out a more reliable plaster in the reverse the... '' en anglais further object is to provide an improved method of limestone involving decomposition of carbonate are. `` calcination '' – Dictionnaire français-anglais et moteur de recherche de traductions françaises, usually supplied by an source... Distinctive name because of the common arrangement that is used to covert the ores to oxide by strongly it! When subjected to calcination, residence time and calcining atmosphere influence the and. Is heated in the fast fluidized bed of bauxite and gypsum involving the removal of carbon dioxide now let see! Be one of the time occurs at or above the thermal decomposition.... De phrases traduites contenant `` lime calcination '' – Dictionnaire français-anglais et moteur recherche. As `` calcine '', regardless of the following paragraphs cement kiln is effected, -... Arsenic etc the throat F into the chimney electric power plants disucussed on EduRev study Group by 138 Students. During roasting, large quantities of toxic, metallic and acid impurities are out!

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