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3 0620/03/M/J/03 [Turn over (d) Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon. (i) State a use of stainless steel. (ii) Name a metal, other than iron, in stainless steel. (iii) The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus.
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Ankerite is a calcium-iron carbonate with ideal chemical ... Ankerite is a member of dolomite group and often contains significant amount of dolomite (Mg) and kutnohorite (Mn) component. Pure ankerite was never identified in nature, it always contains impurities. ... siderite, baryte, quartz, fluorite, and ore minerals like tetrahedrite ...
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The main minerals in the reduction product from the iron-aluminum symbiotic ore obtained by the low-calcium reduction process are Fe, NaAlO 2, Na 2 CaSiO 4 and NaAlSiO 4, and the iron metallization efficiency, the leaching efficiency of Al 2 O 3 and the content of iron in the concentrate are 84.24%, 86.07% and 75.70% respectively under the ...
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If the iron ore contains clay as an impurity, the flux added during calcination, is a) Clay b) Lime stone c) Argillaceous iron ore d) All the above. ... D. CO 2 and calcium. View Answer. View Answer. For the manufacture of plywood, veneers are placed so that grains of adjacent veneers.
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The silicon dioxide, sand, is removed in the blast furnace, and makes 'salg', calcium silicate. ... Yes, iron ore is a type of rock that contains iron minerals. It is mined and processed to ...
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Iron ore is any rock that contains a usable quantity of iron. Common ore minerals include hematite, magnetite, limonite, and siderite, and these are frequently found together with assorted silicates. Although iron does …
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Limestone is calcium carbonate (CaCO 3) and it is added to the blast furnace to remove the impurities in the iron ore. Calcium carbonate is decomposed by heat in the furnace to give …
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Carbon monoxide reduces the iron (III) oxide in the iron ore to form iron. This will melt and collect at the bottom of the furnace, where it is tapped off. iron (III) oxide + carbon monoxide → iron + carbon dioxide. Limestone (calcium carbonate) …
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If a particular ore contains 55.5% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosphorus? Phosphorus is obtained primarily from ores containing calcium phosphate. If a particular ore contains 50.4% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.01 kg of phosphorus?
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The formation of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter phases during heating and cooling of synthetic iron ore sinter mixtures in the range 298 K to 1623 K (25 °C to 1350 °C) and at oxygen partial pressure of 5 × 10−3 atm has been characterized using in situ synchrotron X-ray diffraction. SFCA and SFCA-I are the key …
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Iron ore (haemonite), Coke (carbon), limestone (CaCO₃), Air. ... Contains calcium carbonate- helps to remove acidic impurities from the iron by reacting with them to form molten slag. What …
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What mass of limestone, in kilograms, should be added for 1.00 kilogram of iron ore processed in a blast furnace if the limestone is 95.5 % CaCO 3 and the iron ore contains 7.88 % SiO 2? The resulting product, calcium silicate, has formula CaSiO 3. Answer in kg. Note: I followed the step-by-by step process and my answer of 137.5 kg was wrong.
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2 ' UCLES 2015 0620/32/F/M/15 1 For each of the following, give the name of an element from Period 3 (sodium to argon), which matches the description. (a) an element which is gaseous at room temperature and pressure [1] (b) an element that is added to water to kill bacteria [1] (c) an element that forms a basic oxide of the type XO [1] (d) an element used as an inert …
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1 Iron ore contains iron(III) oxide, Fe 2 O 3. A blast furnace is used to extract iron from Fe 2 O 3. Equations for some of the reactions in the blast furnace are shown. equation 1 C + O 2 → CO 2 equation 2 CaCO 3 → CaO + CO 2 equation 3 CaO + SiO 2 → CaSiO 3 (a) Equation 1 shows the combustion of carbon in the blast furnace.
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The ore that contains both iron and copper is:A. malachiteB. dolomiteC. azuriteD. copper pyrites. Ans: Hint: In order to this question, to know the correct ore that contains both iron and copper, we should go through the molecular formula of each and...
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Carbonate Ores-Carbonate Ores- The formula of carbonate ion is CO3−2. Carbonate minerals are chemically precipitated in sedimentary rock. The most common carbonate ores are calcite or calcium carbonate, CaCO3,dolomite, a calcium-magnesium carbonate CaMg(CO3)2; and siderite. To learn the lists of carbonate ores, Examples, Properties, Occurrence and FAQs of …
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Iron ore refers to the ore that has use value, contains iron element or iron compounds, and is the important raw material for iron and steel production. The ore products are ... Most of siderite contains a significant portion of calcium salt and magnesium salt. …
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Iron ore, or iron rock, is the host rock in which iron rich minerals can be extracted. The most commonly extracted minerals within iron ore are magnetite, hematite, goethite, and siderite. Iron is most commonly extracted from the iron rock by way of blast furnace at very high temperatures. Iron ores can contain oxide and other im…
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Iron extraction • Ore: Hematite( Limestone): Contains more that 60 % iron. • Hematite contains mostly iron (III) oxide. • Limestone is a mineral that largely contains calcium carbonate • Container: Blast furnace • Temperature: Bottom of furnace:15000C Top of the furnace:2500C • Temperature of hot air: 550-8500C • Raw materials: Coke (C)/iron ore/limestone
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The calcium oxide reacts with the clay minerals in the iron ore to form calcium silicate. Calcium silicate is a molten slag that floats on top of the molten iron ore. The slag can then be removed, leaving behind pure iron ore. Argillaceous iron ore is a …
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What mass of limestone, in kilograms, should be added for 1.00 kilogram of iron ore processed in a blast furnace if the limestone is 95.5 % CaCO3 and the iron ore contains 6.78 % SiO2? The resulting product, calcium silicate, has formula CaSiO3. _____kg
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Phosphorus is obtained primarily from ores containing calcium phosphate. If a particular ore contains 50.4% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.01 kg of phosphorus? If a particular ore contains 55.2% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosphorus?
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Final answer: approximately 8.51 kg of the ore must be processed. Explanation: To calculate the minimum mass of ore required to obtain 1.00 kg of phosphorus from an ore containing 58.9% calcium phosphate (Ca3(PO4)2), we follow these steps:
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An iron ore sample is found to be 35.00% Fe by mass. How many grams of ore are needed to obtain 454.0 grams of Fe? 48.4. A 500. gram iron ore sample was determined to contain 242 grams of iron. What is the mass percent of iron in the ore? 52.9. ... What is the mass percent of oxygen in calcium oxide? 1.03.
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Ore: Hematite( Limestone): Contains more that 60 % iron. Hematite contains mostly iron (III) oxide. Limestone is a mineral that largely contains calcium carbonate. Container: Blast …
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2 ' UCLES 2010 0620/31/M/J/10 For Examiner™s Use 1 Choose an element which Þ ts each of the following descriptions. (i) It is a yellow solid which burns to form an acidic oxide. [1] (ii) This element is a black solid which, when heated, forms a purple vapour . [1] (iii) Most of its soluble salts are blue. [1] (iv) It has a basic oxide of the type MO which is used to treat acidic soils.
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If a particular ore contains 58.9 % calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosphorus? Phosphorus is obtained primarily from ores containing calcium phosphate. If a particular ore contains 50.4% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.01 kg of phosphorus?
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The purpose of a Blast Furnace is to reduce the concentrated ore chemically to its liquid metal state. A blast furnace is a gigantic, steel stack lined with refractory brick where the concentrated iron ore, coke, and limestone are dumped from …
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Iron ore – contains the iron to be extracted Coke – contains the carbon to reduce the iron ore Air – provides oxygen to burn the carbon, which also heats the blast furnace Limestone – is mainly calcium carbonate, which removes the impurities (sand) in the iron ore by reacting to form slag, which floats on the molten iron
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The chemical composition and particle size composition of iron ore concentrate powder and bentonite were shown in Table 2. ... and calcium-containing flux C itself contains a large amount of Ca(OH) 2. During the pellet formation process, it has hydrogel properties, which can improve the plasticity of the mixed powder and thus increase the ...
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