Crushing & Grinding Machines

Important Questions for Class 12 Chemistry Chapter 6

Dec 06 2019 0183 32 Silica acts as acidic flux in the extraction of copper to remove the iron oxide obtained during the process of roasting To remove FeO silica is added during smelting FeO then combines with SiO 2 to form ferrous silicate FeSiO 3 slag which floats over...

What is smelting What is electrolysis Yahoo Answers

Apr 28 2009 0183 32 Smelting is a process where you heat the ore to produce metal You smelt iron ore to produce iron bar You smelt iron ore coal to produce steel bar and so on Electrolysis is a process to split elements from a compound H2O water undergo electrolysis...

GCSE CHEMISTRY

Extraction of Metals What is Electrolysis Electrolysis is the process where an electric current is passed through a liquid that conducts electricity A liquid will only conduct electricity if it contains ions The electrodes are often made from graphite The liquid that conducts electricity is called the electrolyte The amount of electricity needed to produce a...

Zinc processing

Extraction and refining Roasting and sintering Both of the main extraction methods for the production of zinc electrolysis and smelting require the prior removal of sulfur in a highly exothermic oxidation reaction For the electrolytic production of zinc the roasting of concentrates is achieved in fluidized-bed roasters in which finely divided and heated particles of concentrate are...

O Level Chemistry Metals

Smelting is cheap while electrolysis is expensive Extraction of Iron from Haematite 12 Refer to TB/244-246 The iron that is extracted from the blast furnace is known as cast iron and is mainly used to produce steel Steel 13 Steel is an alloy of iron with carbon and/or other metals...

Solar Energy Provides a Breakthrough in Iron Production

Sep 07 2010 0183 32 Licht is not the first to go after the electrolysis path for smelting The first research reports date from 1944 and continue through to today What Licht offers is the iron ore solution could...

232 Pyrometallurgy

Zinc smelting is the process of converting zinc ores into pure zinc Zinc smelting has historically been more difficult than the smelting of other metals eg iron because in contrast zinc has a low boiling point There are two methods of smelting zinc the pyrometallurgical process and the electrolysis process both methods are still used...

Copper extraction

Copper extraction refers to the methods used to obtain copper from its orThe conversion of copper consists of a series of physical and electrochemical process Methods have evolved and vary with country depending on the ore source local environmental regulations and other factors As in all mining operations the ore must usually be beneficiated concentrated...

what are the steps of mining smelting and refining

Iron Ore Smelting Process - Brighthub Engineering Introduction to Iron Ore and Steel Smelting Processing Iron ore is obtained in the conventional method of open cast or underground mining and conveying the ore to the surface preparation are where it is...

Science Iron By Electrolysis

Electrolysis rather than smelting for extracting iron from its ores is being developed by the Ford Motor Co Reason conventional smelting is not economical in the US for ores which assay less than 40 and Ford owns great deposits of low-grade 20-30 ores near unused water power in...

Electrolysis of iron in a molten oxide electrolyte

Jan 05 2018 0183 32 Direct iron production at molten metal state from iron oxides by the sole application of electrical energy represents a possible route to decarbonize steel industry Although chemically simple this reaction is difficult to implement due to the problem of the multiple valence states of iron and to an operating temperature above 1811 K Thermal chemical and electrical conditions have been...

Which of the following metal can not be extracted by

Smelting The process of extracting a metal in the state of fusions is called smelting In this process the ore is mixed with carbon and heated in a suitable furnace Electrolytic reduction process This process is used in the extraction of the alkali and alkaline earth metals zinc and aluminium...

Lesson Explainer Extracting Aluminum

The alumina will be decomposed using electrolysis a costly industrial process with the plants using vast amounts of electricity An aluminum smelting plant uses around 200 MW of power each year so let us remind ourselves why it is necessary to use electrolysis for the extraction of aluminum Aluminum is a very active metal that is more reactive than reducing agents such as carbon and hydrogen...

Direct sulfide electrolysis extracts metal using less energy

This has for decades been assumed impossible The discovery could lead to the production of several other useful metals using electrolysis which would cut the energy costs as well as the hazardous greenhouse gas and sulfur dioxide emissions of conventional ore smelting...

Extracting aluminium

The extraction is done by electrolysis but first the aluminium oxide must be melted so that electricity can pass through it However aluminium oxide has a very high melting point over 2 000 176 C...

Significant Impacts Of Iron Smelting Environmental

The health problems caused by the iron smelting plant are inevitable The emission of poisonous gases like nitrogen oxide sulphur oxide carbon monoxide etc poses a serious threat to the health of the people of Pequia These gases can cause many problems like asthma skin infection damage to eyes and even cancer in some cas...

Hydromet Technology

The process will also yield more of the valuable cobalt which is lost to a great extent in the smelting process This type of hydrometallurgical process is not entirely new Many operations some of them in Canada have used hydrometallurgical processes for years for extraction of zinc and copper from sulphide concentrat...

Extraction of Aluminium Aluminium Ore

Extraction of Aluminium Aluminium Ore - To generate aluminium oxide from aluminium ore called bauxite is purified a white powder form which aluminium can be extracted Occurrence and uses of Aluminium Hall-heroult process for the production of aluminium...

Global trends and environmental issues in nickel mining

Laterite ore is an important raw nickel ore resource and methods for extracting valuable metals from low-nickel saprolitic laterite has not been fully developed This paper proposes a technology called nonmolten state metalized reduction NSMR for extracting nickel and iron from saprolitic laterite in a...

Electrolysis may one day provide green iron New Scientist

Aug 30 2006 0183 32 Electrolysis produces iron a different way The iron ore is dissolved in a solvent of silicon dioxide and calcium oxide at 1600 176 C and an electric current passed through it...

Zinc smelting producing and classification

Zinc smelting is the process of converting zinc concentrates ores that contain zinc into pure zinc The most common zinc concentrate processed is zinc sulfide which is obtained by concentrating sphalerite using the froth flotation methodThere are two methods of smelting zinc the pyrometallurgical process and the hydrometallurgical process over 90 of hydrometallurgical process is in...

Iron Ore HowStuffWorks

To get to the bits of iron in the ore you have to smelt it out Smelting involves heating up ore until the metal becomes spongy and the chemical compounds in the ore begin to break down Most important it releases oxygen from the iron ore which makes up a high percentage of common iron or...

Reduction of Metals Extraction from Ore

There are 3 main methods of extracting metals from their ore 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 oxid Each of these oxides is heated with carbon...

Gold Ore Processing Test Project in Africa

After carbon adsorptionand electrolysis the recovery rate of Au was 9131-9161 If the washing rate smelting recovery rate = 970 995 the total recovery rate of...

Cleaner Cheaper Way to Make Steel Uses Electricity

May 09 2013 0183 32 In 2011 manufacturers produced around 100 billion metric tons of iron globally From mining ores to smelting to tempering alloys the process is energy intensive and...

extracting metals from their ores

Extracting Metals from their Or Extracting Metals from their Or The majority of metals do not occur native and instead are compounds like sulphides or oxid These compounds are called minerals and a rock which contains a mineral is known as an ore Metals can be extracted from ores using a range of methods The best technique to use depends on...

during extraction of a metal the ore is roasted if it is a

Dec 01 2020 0183 32 1Ores can be roasted if the ore is an oxide or sulphide 2 The metal to be obtained MUST be below Carbon C is the reactivity seri If it is above C it can only be extracted by electrolysis An example is Iron Iron ore Fe2O3 is roasted in carbon C to produce iron Fe and Carbon dioxide CO2 Reaction equation is...

Electrolysis Method Described for Making Green Iron

Electrolysis Method Described for Making Green Iron Iron the key ingredient of steel is extracted from ore mined from the Earth s crust in a process known as smelting which today requires the addition of carbon at extremely high heat -- releasing CO2...

How to Smelt Iron The 6 Steps to Iron Smelting The

The Basics of Smelting Iron at The Crucible By Kristin Arzt Smelting is the process of extracting base metals from ore by heating it to produce the chemical reactions needed to remove the other elements present This article will walk through how The Crucible produced their own iron through the smelting of iron ore...

Extracting metals using electrolysis

Metals are found in ores combined with other elements Electrolysis can be used to extract a more reactive metal from the ore Bioleaching is used to extract small quantities of metals from mining...