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Extraction Of Metals Pdf Download

Extraction Of Metals Pdf Download

extraction of metals pdf


Extraction Of Metals Pdf Download --



























































topic, formula, compound, reaction, anything! . Application Error. as used in the blast furnace extraction of iron). The conducting melt or solution is called the electrolyte. Mineral ores are naturally occurring rocks that provide an economic starting point for the extraction and manufacture of metals for a huge variety of purposes ie a metal ore is rock containing sufficient metal to be worth extracting the metal from it. Please try again or start browsing on our home page. coke made from coal). the more reactive the metal, the more readily the metal forms a stable compound eg with oxygen or sulfur, and therefore this greater compound stability, the more difficult it is to reduce to the compound to the metal). .. Somewhere in the past aluminium combined with oxygen to form aluminium oxide, the main compound in bauxite ore from which aluminium is extracted.


There are detailed notes on the extraction of iron and its conversion to steel. We would therefore say the aluminium was oxidised by oxygen gain. The metal ions in the ore compound are forced by electrical energy into accepting electrons and producing free metal atoms. aluminium from molten aluminium oxide or sodium from molten sodium chloride. aluminium ion (3 ) 3 electrons () ==> neutral and free aluminium atoms Al3 3e ==> Al so, once again the metal ore compound is reduced to the metal. Copper ores are processed to give copper oxide from which copper may be obtained by a reduction process to remove the oxygen (reduction). Enter specific words e.g. during the electrolysis of molten aluminium oxide the following reaction happens .


Sometimes electrolysis is used to purify less reactive metals which have previously been extracted using carbon or hydrogen (e.g. Aluminium is a very useful metal but expensive to produce. 403 Forbidden . The extraction, smelting and purification of copper is covered and similarly notes on the extraction of zinc, titanium and chromium. Below is the index of revision notes on extraction procedures and theory, so, scroll down for revision notes on extraction procedures and theory which should prove useful for school/college assignments/projects on ways of extracting metals from their ores. Economic & environmental Issues and recycling . Similarly in a blast furnace, the iron oxide is reduced with carbon to free the iron from oxygen. aluminium oxygen ==> aluminium oxide. The economics of metal extraction are not only dependent on the quality of the ore and the cost of extraction (ie richer ores lead to cheaper production), but also depend on the market price and demand.


Electrolysis is also used to plate one metal with another. its got to have enough of the metal, or one of its compounds, in it to be worth digging out! Ores are often oxides, carbonates or sulphides. The rock must contain enough of the metal compound, hence enough of the metal, to be worth exploiting the ore reserve and extract the metal by physical and chemical processes. Introduction to the extraction of metals What methods can be used in extracting metals from mineral ores? The Earth's crust contains many different rocks. The metal ore, a mineral or mixture of minerals from which economically viable amounts of metal can be extracted, i.e. 2587a83389

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