Australian Aluminium Teacher Guide Some links may not work on the web version Please see in class for details Mr G.

Slides:

Advertisements

Similar presentations

Can you think of some uses for aluminium?

Advertisements

1 Secondary 4 Chemistry Extraction of Aluminium via electrolysis JT 2009 Raffles Programme.

Unit 4: Chemistry at Work Area of Study 2 – Using Energy

Mining in Western Australia. The Western Australian mining industry is the largest and most diversified resource industry in Australia. The state encompasses.

Historical Availability of Metals Before 1800’s, only 10 were in use: Cu, Sn, Fe, Pb, Au, Ag, Zn, Hg, Bi, Pt They were either found uncombined Or Extracted.

12 Chemistry 2.2 quantitative chemistry CR 07 Practical uses of Electrolysis Electrolysis is an expensive process because of the energy involved. Electrolysis.

Power-oriented Industries

1 Negative Ions - Bromine Negative ions are attracted to the positive electrode. The positive electrode is called the anode. Negative ions are called anions.

Electrolysis project Electrode: Is an electrical conductor that is used to pass current through an electrolyte.

Chemicals of the Natural Environment. C5 Lesson 8.

Yr 10 Electrolysis project. Yr 10 Electrolysis project.

The Extraction Of Metals and The Preparation and Collection Of Non-Metals. Ashvini Jagassar- 5C Chemistry. Mr. Dookoo.

Chemistry in Industry and Technology Option C. Aluminium.

Do now! Can you read through the blast furnace equations?

ALUMINIUM Extraction and uses. BACKGROUND Aluminium is the most common metal in the Earth’s crust. It comprises approximately 7.5% of the crust by mass.

Occurrence and Distribution of Metals

Metallurgy Mining of Ores Ore Concentration or Dressing Metal Extraction.

Electrolysis. –A redox reaction that is made to occur by passing a direct electric current through an electrolyte Electrolyte –is a liquid that conducts.

Production and Uses of Metals CHEMISTRY 2 Additional Science Chapter 8.

Cairo University Faculty of Engineering 2nd year Dept of Metallurgy.

Extraction of Aluminium I know how aluminium is extracted from its ore. L.O.

Write down the Reactivity Series from Potassium to Gold.

ELECTROLYSIS Decomposition using an electric current.

The Extraction Of Metals

APPLICATIONS of REDOX REACTIONS. ELECTROPLATING Electroplating is the use of electrolysis to apply a thin layer of one metal over another.

Extraction of Aluminium Aluminium is extracted using electrolysis because it is too reactive to be extracted using carbon.

Definition The Process Examples

Explain the process of electrolysis and its uses

CRAFT & DESIGN CASTING The process of sand casting involves taking a wooden pattern of the thing you want to create in metal, placing it in a box of sand,splitting.

By: NN C.1.1  The main source of Iron is Iron Ore.

MODULE C5: CHEMICALS OF THE NATURAL ENVIRONMENT. Atmosphere Molecular elements (e.g. oxygen, nitrogen, ozone) and compounds (e.g.carbon dioxide, water)

Splitting up ionic compounds (F) Molten compounds

METALS. Introducing metal extraction 1.First, substances other than the metal compound are removed (concentration). 2.Next, the metal itself is extracted.

ELECTROLYSIS Electrolysis is a method of using a direct electric current (DC) to drive an otherwise non- spontaneous chemical reaction. Electrolysis is.

The purpose of electrolysis is to split up ionic compounds using electricity to produce useful products. Electrolysis is used a lot in industry and is.

Electrolysis L.O: To be able to describe the uses and predict the products of electrolysis.

Chemicals and the Earth Lesson 3: Extraction of Metals.

MODULE C5: CHEMICALS OF THE NATURAL ENVIRONMENT. Atmosphere Molecular elements (e.g. oxygen, nitrogen, ozone) and compounds (e.g.carbon dioxide, water)

Aluminum Metal of the 21st Century.

EXTRACTIVE METALLURGY OF ALUMINIUM Intro: Aluminium is the most abundant metal in Earth. It occurs in nature in the form of aluminium oxide and other combined.

Electrolysis – background

Contemporary Science Issues Lesson 7: Siting and Aluminium smelter © 2006 Gatsby Technical Education Projects.

Making aluminium.

Electrolysis Noadswood Science, 2012.

Aluminium Extraction and Uses.

Revision lesson.  Metals found in the ground are normally found as a METAL ORE – combined with other elements in compounds  Metals found on their own.

Extracting metals. Methods of extracting metals The Earth's crust contains metals and metal compounds such as gold, iron oxide and aluminium oxide, but.

J Brewin Deer Park School

Aluminium Extraction and Uses WaSwimvCGA8.

AQA GCSE C2.7.  When an ionic substance is melted or dissolved in water (to make a solution) the ions become free to move.  Electrolysis can then be.

Topic 3 Metals and their uses. Extracting metals Metals are found in the Earth’s crust They are often chemically combined with other elements – this is.

Learning objective: demonstrate electrolysis as the decomposition of a molten salt by an electric current see patterns in the changes at the electrodes.

Extraction of Aluminum By Peter Bassett and Ben Reading-Thompson.

Chapter 17.  Which metals were discovered earliest?  Gold, copper, silver = less reactive metals  Found “native” ie. as pure metal  More reactive.

Smelting is a melting process in which pure alumina is dissolved in a mixture of molten cryolite (Na2AlF6) and fluorspar (CaF2), melting point 950oC. Conducts.

Recycle or raw materials?

The Extraction Of Metals 1

Presentation on Chemistry

extraction of metals extraction of aluminium -

Extraction from Dolomite CaMg(CO3)2 and Magnesite Ore MgCO3.

Extraction of metals.

Resistant Materials Metals

Presentation transcript:

Australian Aluminium Teacher Guide Some links may not work on the web version Please see in class for details Mr G

List all six

Boyne Island Boyne Smelters Limited at Boyne Island, Queensland was commissioned in 1982 with a two-potline capacity of 206,000 tonnes per year. The third potline was added in 1997 Increasing production capacity to 490,000 tonnes. Further improvements have seen current production reach 545,000 tonnes per annum (2006), making BSL Australia's largest aluminium smelter. Aluminium ingot, t-bar and billet are produced at the Boyne Island smelter. List facts

Aluminium production starts with the BAYER process. This extracts aluminium oxide (alumina) from bauxite (aluminium ore) The alumina (aluminium oxide) is then dissolved in cryolite. Once dissolved, the final process of metal extraction involves ELECTROLYSIS

BAYER PROCESS ANIMATION REQUIRES INTERNET CONNECTION HERE

html How does QAL care for the environment once the bauxite has been mined?

After the bauxite has been mined, processed and environment restored. The alumina is transported to the smelter for metal extraction

Aluminium Smelting Process Alumina is made up of aluminium and oxygen. To produce aluminium metal, these two elements need to be separated. Two tonnes of alumina are needed to make one tonne of aluminium. Alumina is dissolved in an electrolytic bath of molten cryolite (sodium aluminium fluoride) within a large carbon or graphite lined steel furnace known as a ‘pot’. There are hundreds of pots at a typical smelter. A high electric current is passed through the pot at low voltage, via carbon blocks called anodes. The strong electric current flows continuously from the anode (positive), through the alumina/cryolite mixture to the carbon or graphite lining of the pot (negative), and then to the next pot, and so on. The electricity enables the alumina to split into its components of aluminium and oxygen. The oxygen bubbles away and the aluminium settles to the bottom of the pot. The electricity also maintains the temperature of the process at about 950 degrees Celsius. The molten aluminium is cast at a temperature of just over 700 degrees Celsius to form ingots.

Hall Heroult process COPY process.jpeg

ell.jpg