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International GCSE Paper Reference KCH0/1C 4CH0/1C KSC0/1C 4SC0/1C. 2 *P41538A0228 * *P41538A0328* 3 Turn over BLANK PAGE. 4 *P41538A0428* Answer ALL questions. 1 This question is about the element beryllium. (a) Use words from the box to complete the sentences about beryllium. Each word may be used once, more than once or not at all. (7) electrons negative neutral neutrons nucleus .
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Lead smelting and lead alloy classification; Lead mining ; Lead metal can be classified as either primary or secondary. Primary lead is produced directly from mined lead ore whereas secondary lead is produced from scrap lead products (such as automobile batteries) which have been recycled. Total annual production is approximately 8 million tonnes, half of which is primary lead. It is rare to ...
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Extraction of Metals. Extraction of Iron.. Iron is extracted from its ore in the blast furnace.. The main iron ore is called haematite. Haematite is iron(III) oxide Fe 2 O 3. The iron ore contains impurities, mainly silica (silicon dioxide). Limestone (calcium carbonate) is added to the iron ore which reacts with the silica to form molten calcium silicate in the blast furnace.
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Its formula is Fe2O3. The process of the extraction of iron is carried out by the following steps: a). Concentration of ore b). Calcination or Roasting of ore c). Reduction of ore d). Concentration of ore. Via these procedures, the iron gets through the blast furnace and so that its resultant form can be used to build iron .
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Iron ore is most often found in the forms of hematite and magnetite. Learn what makes those types of iron ore different and make an informed investment.
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EXTRACTION OF MERCURY. Most of the world''s mercury is obtained from its main ore, cinnabar or vermillion with the chemical structure mercury sulphide (HgS). Cinnabar is usually found in a massive or granular form but can also occur as small crystals shown below. This ore is bright red in colour and small droplets of mercury metal can sometimes be found within the ore itself. The main areas for ...
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Occurrence and Extraction of Metals. Source of metal: Metals occur in earth''s crust and in sea water; in the form of ores. Earth''s crust is the major source of metal. Sea water contains many salts; such as sodium chloride, magnesium chloride, etc. Mineral: Minerals are naturally occurring substances which have uniform composition. Ores: The minerals from which a metal can be profitably ...
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CID 445124 | Fe2 | CID 445124 structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety ...
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Iron ores in the form of hematite (ferrous oxide) and magnetite are removed from the earth through mining. The use of heavy mining equipment is necessary to dig out large pits in an area with a large deposit of iron ore; however, because iron does not occur naturally, it is necessary to use a blast furnace to separate or refine iron from the other substances in the iron ore.
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Iron is produced by smelting – heating iron ore to separate out the iron. Iron ore contains iron oxides, and when it is heated with coke (essentially carbon), oxygen moves from the oxides to the carbon, reducing the ore to molten iron. In the 19th century Britain smelted iron from lumps of iron ore, using blast furnaces fuelled by coke. In this process, molten iron from the ore forms a pool ...
Get PriceMETALS AND THEIR ORES Name: Mohun UJOODHA School: Bon Accueil State College, Mauritius. Age group: Form 3, 14yrs . Subject: Chemistry. Email: chemmru2 At the end of this lesson, you will be able to:(i) list the different metals and their ores (ii) match the metals with their uses (iii)predict the method of extraction of different metals (iv)describe the importance of recycling ...
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Education Resources Copper Mining and Extraction: Oxide Ores . Copper is refined from ores in the ground, either through underground or openpit mines. Most of the copper ores mined today are oxide or sulfide ores. Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an important byproduct of this process ...
Get PriceThe Silver Extraction Process. The ore used to extract silver was not a silver ore but Lead Sulphide (formula PbS), known as Galena or Galenite (named by the Roman Pliny) which contains 87% lead. The local variety of Galenite is silverbearing and is known as Argentiferous Galenite (formula ()S ) and the lead obtained from this ore contains just a small percentage of silver from % up ...
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Beneficiation of Iron Ores. Iron ore is a mineral which is used after extraction and processing for the production of iron and steel. The main ores of iron usually contain Fe2O3 (70 % iron, hematite) or Fe3O4 (72 % iron. magnetite). Ores are normally associated with unwanted gangue material. Grade of iron ore is usually determined by the total Fe content in the ore. Run of mines ores after dry ...
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To isolate pure gold, mining companies use a complex extraction process. The first step in this process is breaking down large chunks of rock into smaller pieces. At a mill, large machines known as crushers reduce the ore to pieces no larger than road gravel. The gravellike material then enters rotating drums filled with steel balls. In these drums, the ore is ground to a fine slurry or ...
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ZIMSEC O Level Combined Science Notes: Extraction of iron: The blast furnace. After iron ore is mined it is send to the blast furnace; Iron is extracted from its ore in a blast furnace . The structure of a blast furnace. Image credit The oxide ores are reduced to iron by removing the oxygen from them ; Coke, limestone and iron ore are fed into the top of the furnace; Hot air is ...
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Give some important ores of Aluminum, Iron, Copper and Zinc The extraction and isolation of metals from ores involve the following major steps: • Concentration of the ore, • converting ore into oxide • Reduction • Refining (Purification of the metal.) Concentration of the ore/ dressing or benefaction:
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The main ore of mercury is cinnabar (HgS). Extraction process: The following steps are involved for the extraction of mercury. 1. Crushing and Concentration: The sulphide ore is first crushed by jaw crusher whereas powdered in ball mills. Then the water is mixed with the water and pine oil and stirred by the current of air. Hence, all the sulphide ore floats as froth leaving behind impurities ...
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You can look at the extraction of iron in detail in the unit Extraction of Iron. There are environmental issues that we should consider in relation such processes. The carbon (coke) is made from coal – one of our nonrenewable energy sources (once it has been used up, we can''t replace it). The supplies of metal ores are also finite and will ...
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Copper, tin, lead, and iron are more reactive and must be heated with carbon to extract the metals. Aluminum, calcium, sodium and other active metals are extracted using electrolysis. Copper can be extracted from its ores by reduction. One of the common copper ores, malachite, which is composed of mainly copper carbonate, CuCO3xCu(OH)2, is heated to produce copper oxide with the release of ...
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From the results it is suggested that rich or concentrated ores which do not contain precious metals, arsenic or lead should be roasted to antimony tetroxide, while poorer ores, and ores containing precious metals, should be roasted to antimony trioxide. It is further suggested that it is inadvisable to extract antimony from rich ores by fusing the sulphide with iron on account of the high ...
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2a. Extraction of Iron in a blast furnace. Sadly, now shut down! Raw Materials:. Iron Ore haematite ore (iron(III) oxide) the source of iron.. Fe 2 O 3; or magnetite ore. Fe 3 O 4; coke (carbon, C), both fuel and reducing agent.; hot air (for the oxygen in it) to burn the coke. O 2; limestone (calcium carbonate) to remove certain impurities like silica.
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Metallurgy is the process in which the extraction of the metals are done to obtain the crude metal from their ores is defined as metallurgy. The three steps involved in the process of metallurgy are: Crushing or grinding of the ore into smaller pieces.
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Titanium extraction The process used to extract titanium is called the Kroll process and is named after William J. Kroll, who invented the method in the 1930s. It is slow and has at least two steps. First the titanium oxide ore is reacted with chlorine to make titanium chloride. 1. Balance this equation to show the reaction between titanium oxide and chlorine: TiO 2 + Cl 2 TiCl 4 +O 2 The ...
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