People's Education Press High School Chemistry Compulsory Course I
Cantonese Education Edition Ninth Grade Chemistry Volume 1
Beijing Curriculum Reform Edition Ninth Grade Chemistry Volume 2
People's Education Press Ninth Grade Chemistry Volume 1
Lu Ke Edition High School Chemistry Compulsory Course 1
Beijing Curriculum Reform Edition Ninth Grade Chemistry Volume 1
Lu Jiao Edition Ninth Grade Chemistry Volume 1
Hunan Education Edition Ninth Grade Chemistry Volume 1
Cantonese Education Edition Ninth Grade Chemistry Volume 2
People's Education Press Ninth Grade Chemistry Volume 2
People's Education Press High School Chemistry Compulsory Course 2
Lu Ke Edition High School Chemistry Compulsory Course 2
Hunan Education Edition Ninth Grade Chemistry Volume 2
Lu Jiao Edition Ninth Grade Chemistry Volume 2
Category | Format | Size |
---|---|---|
Cantonese Education Edition Ninth Grade Chemistry Volume 2 | pptx | 6 MB |
Description
"Metal Minerals and Smelting" Metal PPT Courseware 4
1. Several metallic minerals
1. The existence form of metallic elements in nature
Free state (element exists in elemental form): a few very inactive metals such as gold, silver, and platinum
Combined state (elements exist in the form of compounds): Most metals exist in minerals in the form of compounds
2. Several common ores
Hematite (Fe2O3)
Magnetite (Fe3O4)
Ilmenite (FeTiO3)
Pyrite (FeS2)
Malachite (Cu2(OH)2CO3)
Cuprite (Cu2O)
Bauxite (Al2 O3)
The essence of metal smelting is the process of reducing metals from ores
2. How steel is made
Basic principles of ironmaking:
Use the reducing agent carbon monoxide to reduce the iron in iron oxide under high temperature conditions
Phenomenon:____________________
The explanation products are:
equation:_________________
Notice:
1. Pass carbon monoxide first to discharge the air in the pipe to prevent carbon monoxide and air from mixing and heating and exploding.
2. After the experiment, stop heating first, and continue to pour carbon monoxide until the glass tube cools down. (Prevent hot iron from being re-oxidized)
3. Burn the exhaust gas to prevent air pollution (or collect the exhaust gas with balloons)
Practical exercises
1. Write the chemical formulas of the main components of the following minerals.
Hematite___________, magnetite__________,
malachite_________________.
2. There are the following metal elements: magnesium, iron, potassium, aluminum, sodium,
The most abundant substance in the earth's crust is _____, and the second most abundant substance is ________.
3. Among the following substances (1) iron oxide (2) liquid oxygen (3) potassium chlorate (4) sulfuric acid (5) oxygen in cylinders, the oxygen element exists in the free state ___________, and the oxygen element exists in the combined state _ ________.
4. In the reaction of CuO+ CO=Cu+CO2, _____ takes away the oxygen in _______, causing it to undergo a reduction reaction, so ______ has reducing properties.
3. Pig iron and steel (iron alloys)
1. Smelting of pig iron
The function of limestone is to convert gangue (such as silica) in the ore into slag and remove it.
2. Smelting of steel
Raw material: pig iron
Principle: Oxygen is blown into the steelmaking furnace to reduce the carbon content in pig iron and remove sulfur and phosphorus impurities (oxidation)
Equipment: open hearth, electric furnace, converter
4. Common methods of smelting metals
1. Active metals (such as K Na Mg AI): electrolysis method
2. General metals (such as Zn Fe Sn Pb Cu): thermal reduction method
3. More stable metals (such as Hg Ag): direct heating method
4. Stable metals (such as Pt Au): can be obtained through gold sand panning
summary
1. There are a few very inactive metals such as gold, silver, and platinum, and there are minerals that exist in elemental form. Most metals exist in minerals in the form of compounds.
2. Reduction reaction, reducibility.
3. Iron-making and steel-making.
4. Common methods of smelting metals.
Operation
Read the content of this section of the textbook
Complete questions 1, 4, and 5 on pages 179-180 of the textbook.
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For more information about the PPT courseware "Metals, Metal Minerals and Smelting", please click the Metal ppt Metal Minerals and Smelting ppt tab.
"Metal Minerals and Smelting" Metal PPT Courseware 3:
"Metal Minerals and Smelting" Metal PPT Courseware 3 1. The existence of metals in nature Free state (element): Ag Pt Au Combined state (compound): Fe Cu Na and other most metals 2. Metal mineral hematite (Fe2O3) Yellow Iron ore (FeS2) Siderite (FeC..
"Metal Minerals and Smelting" Metal PPT Courseware 2:
"Metal Minerals and Smelting" Metal PPT Courseware 2 New Knowledge Preview 1. The Existence of Metals and Metal Minerals 1. Presence of metals: Metals come from naturally occurring minerals in the earth’s crust. (1)Elemental form: A few metals with chemical properties of ________ exist in elemental form..
"Metal Minerals and Smelting" Metal PPT courseware:
"Metal Minerals and Smelting" Metal PPT Courseware Learning Objectives: 1. Understand the conditions for metal corrosion and simple methods to prevent metal corrosion. 2. Know the minerals of some common metals such as iron, aluminum, copper, etc., and understand the methods of reducing iron from iron ore. 3.will...
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Update Time: 2024-10-19
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