Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
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By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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If a metal is less reactive than carbon, it is cheaper to extract it by heating with carbon. The very least reactive metals, such as gold, occur as pure elements, but may be contaminated with ...
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The platinum group metals or PGMs are a cluster of six transition metals on the periodic table. They are noble and precious metals with chemical and physical properties similar to that of platinum and occurring in the same ore deposits. The platinum group metals are rare, durable, useful, and highly valuable.
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Sources of Platinum Group Metals . Platinum gets its name from platina, meaning "little silver," because the Spaniards considered it an unwanted impurity in silver mining operations in Colombia.For the most part, PGMs are found together in ores. Ultramafic and mafic igneous rocks contain high levels of platinum group metals, the …
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Ans. Extracting metals that are low in the Activity Series is significant because these metals have several important uses in various industries. For example, copper is widely used in electrical wiring and plumbing, while silver and gold are valuable for their aesthetic and monetary properties. By extracting these metals, we can meet the demand ...
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1 Explain why metals such as gold and silver are found naturally as elements, whereas most other metals are found in compounds. 2 Copper and tin are less reactive than iron. a Suggest how these metal are extracted from their ores. b Evaluate bacterial and phytoextraction methods for the extraction of copper.
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(a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
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Low reactive metals are usually found in the Free State. Two examples of such metals are gold and platinum. Additionally, a few metal types occur in both combined and free states. Copper and silver are two types of such metal. From certain minerals, ores can be extracted; this process is known as the extraction of metals or metallurgy. Here ...
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Different separation techniques are accordingly employed. 1. Extracting Metals Low in the Reactivity Series.
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Copper, silver, gold and platinum are unreactive and are found in the Earth as metal ores or sometimes pure metals. Using a more reactive metal to displace a less reactive metal from its compound is called a displacement reaction. Electrolysis is used to extract the most reactive metals from their ores. Prediction of Metal Reactions. The ...
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A more reactive metal will displace a less reactive metal.In addition a more reactive metal will react more vigorously than a less reactive metal.For ... potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper, silver, gold; 2:18 know the conditions under which iron rusts; 2:19 understand how the rusting of iron may be ...
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metal to be obtained. To extract the metal from the rock, the rock is crushed and the metal is then melted out. 2. Reduction of metal oxides using carbon. Carbon is used to extract some metals ...
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Chemical properties of platinum. Platinum has the chemical symbol Pt and its atomic number is 78. It is silverish white in colour and dense, malleable and highly unreactive. A member of the platinum group of metals, it has six naturally occurring isotopes and has a natural resistance to corrosion, not oxidising in the air even at high temperatures.
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In the following table, Hydrogen gas, a non-metal, is taken as a factor for comparison of metals that are higher in reactivity than Hydrogen gas and those that … See more
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Low reacting metals: These metals are free to state metals and less reactive than other options. The extraction of metals with such property is very easy and cost-effective. …
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Extraction of Silver: 1. Silver can be extracted from Ag 2 S by using displacement from aqueous solution.. 2. Ag 2 S is dissolved in KCN solution to get dicyanoargentate (I) ions.. 3. From these ions Ag is precipitated by treating with Zinc dust powder. Extraction of Gold :
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(a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
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Reactivity series is a list of metals arranged in decreasing order of their reactivity. Most reactive metals are at the top while the …
DetailsThe most reactive metal is placed at the top of the list, and the least reactive metal is placed at the bottom. ... such as the extraction of metals from their ores and in the production of alloys. ... iron, tin, lead, copper, silver, gold, and platinum. Aluminum - Aluminium is less reactive than magnesium but more reactive than zinc. It …
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Metals of low reactivity level. Metals that aren't very reactive are placed low in the reactivity series. These metals can be reduced to metals by heating alone. For example, Mercury is procured from its ore, cinnabar (HgS), by the process of heating. Copper can also be obtained from its sulphide ore (Cu 2 S) by heating.
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Metals that are low in the reactivity series, such as gold and platinum, exist in a free state. Metals such as copper and silver exist in both their free and combined states in the Earth's crust. Metals in the middle of the …
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Assertion: Platinum (Pt), gold (Au), and silver (Ag) are native elements that are found freely in the earth's crust. Platinum For the following reasons, jewellery is made of gold and silver. They are extremely shiny metals that don't corrode. They may be moulded into any shape or pattern due to their extreme malleability and ductility.
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•. Thiourea is efficient for the recovery of Au (III) from Tf2N- ionic liquids. Abstract.
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Give reasons. (a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction. Q. Give reason for the following:
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Extraction of silver: Silver occurs in both combined state as well as in the free state.The important ores of silver are Argentite (Ag 2 S) copper, Silver glance, Horn silver, Ruby silver etc.. Extraction of Platinum: Platinum is rarely found on its own, but in combination with other base & precious metals. Extraction of Gold: Gold is usually …
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Click here:point_up_2:to get an answer to your question :writing_hand:collect information about extraction of metals of low reactivity silver platinum and gold andprepare a. Solve. Guides. Join / Login. Use app Login. Question. ... report on on extraction of metals of low reactivity siver,platinum and gold With easy language Detail explanation ...
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(a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphides ores are usually converted into oxides during the process of extraction.
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Most metals are susceptible to natural processes such as oxidation and corrosion. As a result, only non-reactive metals such as gold, silver, platinum, and others are discovered in their native or free condition. Most metals are obtained as compounds, which must be filtered to remove contaminants before being employed in various applications.
DetailsPlatinum ore can be obtained through controlled explosions or by advanced mining techniques. Once it has been mined, the platinum is extracted from the ore in the same …
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The reactivity series of metals is a list of metals arranged in their order of reactivity from highest to lowest. At the top of the list are the highly reactive metals that lose electrons during a chemical reaction to form ions. At the bottom are the least reactive metals. During a single-displacement reaction, a metal higher up the series will ...
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(a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
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3.3. Selective reduction of gold in PGM solutions. The classic process involving reduction of gold to metal from chloride solution is a simple and effective process that is well suited to batch operation. A large number of reagents have been used, namely hydrazine, SO 2 gas, oxalic acid, bi sulfite, sucrose and others.
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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