THE EXTRACTION OF METALS AN INTRODUCTION. This page looks at the various factors which influence the choice of method for extracting metals from their ores, including reduction by carbon, reduction by a reactive metal (like sodium or magnesium), and by electrolysis.
Galena, also called lead glance, is the natural mineral form of lead(II) sulfide. It is the most important ore of lead and an important source of silver. deposits galena contains about 1–2% silver, a byproduct that far outweighs the main lead ore
Ores: The minerals from which a metal can be profitably extracted are called ores. Metals found at the bottom of reactivity series are least reactive and they are often found in nature in freestate such as gold, silver, copper, etc. Copper and silver are also found in the form of sulphide and oxide ores.
Jul 28, 2012 · There are different steps involved in extraction of metals. Let us discuss them one by one: 1. Crushing and Grinding. First of all, ores are crushed into a fine powder in big jaw crushers and ball mills. This method is called pulverization. 2. Concentration (Dressing) of ores.
The first steps in the production of a metal object are to extract the ore from the mine, process the ore for smelting, and then eventually smelt the ore into metal. From Ores to Metals. David
Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.
Isolation of elements in Chemistry class 12 aims to teach the students about various processes of extraction of metals from ores. Very few metals such as the noble metals, i.e., Gold, Silver, and Platinum etc. are present in their original metallic forms in nature.
is a rock that contains enough of a metal or a metal compound to make extracting the metal worthwhile. Most metals are extracted from ores found in the Earth''s crust.
Extraction of Metals. Industries extract metals from their ores. What are ores? Let me explain in a simple way. Usually, less reactive metals such as gold and silver are found in their pure form in the soil. But this is not the case with more reactive iron or aluminum. Usually iron and aluminum exist as compounds, with oxygen, also known as oxides.
Extracting iron from iron ore using a Blast Furnace. The common ores of iron are both iron oxides, and these can be reduced to iron by heating them with carbon in the form of coke. Coke is produced by heating coal in the absence of air. Coke is cheap and provides both the reducing agent for the reaction and also the heat source.
METALS AND THEIR ORES. In some places, the mineral deposits in rock contain a high concentration of one metal. These metal deposits are called ores. An ore is a
Jun 22, 2011 · The method used to extract a given metal from its ore depends upon the reactivity of the metal and so how stable the ore is. Very reactive metals are extracted using electricity, while less
Jul 21, 2016 · Question 9 How are the less reactive metals extracted? Question 10 How are the highly reactive metals extracted? Question 11 How does the method of extracting a metal from its ore depend on the position in the reactivity series? Conversion of ore into metal a) The less reactive metals are extracted by reduction of their oxides by heat alone.
Extracting metals from ores is a whole science of its own. And each metal is somewhat different. Most iron ore mined today its quite high in grade. Much of Western Australia''s iron ore runs more than 60 % iron. The iron is in the form of iron oxid
Jul 06, 2016 · Once the ores have been excavated, the metals themselves must then be extracted from the ore, a process that depends on the metals'' reactivity, according to BBC. Highly reactive metals such as aluminum, for example, can be isolated using an electric current in a technique known as electrolysis.
How to Extract Precious Metals From Sulfides Extract sulfide ore deposits from the ground and place in to the crusher to mince ore from 5 to 50 micrometers. Crushing begins the separation process by preparing the ore to be floated in water. First, the ore is crushed using a gyratory crusher to reduce the ore to 6inch diameter pieces.
Nickel processing Nickel processing Extraction and refining: The extraction of nickel from ore follows much the same route as copper, and indeed, in a number of cases, similar processes and equipment are used. The major differences in equipment are the use of highertemperature refractories and the increased cooling required to accommodate the higher operating temperatures in nickel
They are reduction of the ore with carbon, reduction of the molten ore by electrolysis, and reduction of the ore with a more reactive metal. Extraction using carbon. Metals such as zinc, iron and copper are present in ores as their oxides. Each of these oxides is heated with carbon to obtain the metal.
The process of extracting a metal in pure form from its ore is known as metallurgy. The process of treatment depends on upon the nature of the ore, impurities, and the metal. From the extraction point of view, the metals can be broadly classified into five egories.
Methods of extraction Many metals are found in the Earth''s crust as ores. An ore is usually a compound of the metal mixed with impurities. When the metal is dug up, a method must be used to separate the metal from the rest of the ore. This is called extracting the metal. The method of extraction depends on how reactive the metal is. The more reactive the metal, the more difficult it is to
The primary methods used to extract minerals from the ground are: Underground miningSurface (open pit) miningPlacer mining The loion and shape of the deposit, strength of the rock, ore grade, mining costs, and current market price of the commodity are some of the determining factors for selecting which mining method to use.
Nov 16, 2011 · Metal ore is a type of rock from which metal can be extracted. Metal ores are normally oxides for example, aluminum is the most common metal in
Aug 18, 2012 · Below are the pros and cons of extracting raw metal versus recycling scrap metal. Extracting Raw Metal. Advantages: Raw metal can be a source of valuable revenue. It can be exported and sold to countries that consume metal the most, such as China and the United States. Extracting raw metal also creates jobs for a lot of people, so does
The process of procuring metals from ores is called metallurgy and these naturally occurring compounds of metals are known as minerals. Metals are usually extracted from the earth by mining. Ores. All ores are minerals, but not all minerals are ores. Ores are those minerals which contain metals. The picture shown above is a goldbearing ore.
A metal ore is a rock containing a metal, or a metal compound, in a high enough concentration to make it economic to extract the metal.For example, reactive metals such as aluminium are extracted by electrolysis, while a lessreactive metal such as iron may be extracted by reduction with carbon or carbon monoxide.
Extracting of Copper from Other Ores. Copper can be extracted from nonsulfide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as dilute sulfuric acid to produce a very dilute copper(II) sulfate solution.
class 10 science chemistry extraction of metals. Ores: The minerals from which a metal can be profitably extracted are called ores. Metals found at the bottom of reactivity series are least reactive and they are often found in nature in freestate such as gold, silver, copper, etc. Copper and silver are also found in the form of sulphide and oxide ores.
Nickel is recovered through extractive metallurgy: it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity. In many stainless steel appliions, 75% pure nickel can be used without further purifiion, depending on the composition of
Jul 23, 2014 · Some unreactive metals, like gold, are found in the earth just as themselves. The rest though you have to get out of rocks.and that can get pretty tricky. Metal Ores These are rocks that contain enough metal to make extraction worthwhile In many cases they are just an oxide of the metal. For example the 
Extraction of Metals. Now we already saw how the ore of a metal is concentrated to remove impurities known as gangue. After concentration of ores, we must now extract metal from in it. This step will give us metal in its pure form i.e. the native form of metal. First, we must convert the ore to a suitable form.
How much metal does the ore contain? As a general rule metals are extracted from mineral ores. In many cases these are not present as pure metal, but in the form of compounds which contain both the metal sought and a range of other chemical elements.
Metals are very useful.Ores are naturally occurring rocks that contain metal or metal compounds in sufficient amounts to make it worthwhile extracting them. The method used to extract a given metal from its ore depends upon the reactivity of the metal and so how stable the ore is.
The process used to convert a metal ore into a native metal is called smelting. Lead was one of the first metals extracted by early people, so let''s use it as our first example.
Metals with low chemical activity, such a gold and silver are normally found in their pure state. 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.
Ores. Metals are often extracted from the Earth by means of mining, resulting in ores that are relatively rich sources of the requisite elements. Ore is loed by prospecting techniques, followed by the exploration and examination of deposits. Mineral sources are generally divided into surface mines, which are mined by excavation using heavy
extracting metals from their ores: reduction with carbon electrolysis (using electricity). The method of extraction which is most appropriate depends on the reactivity of the metal being extracted. Most metals are found combined with other elements, as compounds in ores. These metals must be extracted from their ores before they can be made useful.
Apr 26, 2018 · Ores are naturally occurring rocks that contain metal or metal compounds in sufficient amounts to make it worthwhile extracting them. For example, iron ore is used to make iron and steel. Here, we providing a List of some Important metals and their ores. it is mainly useful for your upcoming competitive exams like SSC, UPSC etc.