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MY-101 Introduction to Metallurgical EngineeringDepartment of Metallurgical EngineeringObservationNo. Specimen Mass Volume Density123ResultSpecimen one has identified as __________QuestionsSpecimen two has identified as __________Specimen three has identified as __________1. The density of a material is defined as the ______________of the material.2. The theoretical density of a metal can also be calculated using the properties ofthe__________________3. The unit of density in S.I system _____________, C.G.S system __________, F.P.Ssystem ______________.4. The density of Aluminum is_____________5. The density of Copper is________________6. The density of Stainless Steel is__________10
MY-101 Introduction to Metallurgical EngineeringDepartment of Metallurgical EngineeringEXPERIMENT No. 03ObjectIdentification of iron ores on the basis of colour.ApparatusIron oresTheoryIRONIron is a metallic element with atomic number 26 and atomic weight 56. it is symbol is Fewhich comes from a Latin word “ferrum”. When its is pure it has a dark slivery greycolour. It is a very reactive element and oxidizes (rusts) very easily.Iron constitutes about 4.6% of earths crust and hence it is one of the most widelydistributed an abundant element in the nature.The naturally occurring materials containing iron are known as minerals of iron. Theminerals deposits from which iron is extracted are known as iron ores.CLASSIFICATION OF IRON ORESThe ores of iron are classed according to the iron mineral which is predominant. They arein the order of theoretical percentage of iron present in the mineral.MAGNETITES (Black Ores) Fe 3 O 4These iron ores contain 40% to 70% of iron. They are very hard and strongly magnetic.Magnetites also occur in a mixture with silica ( 35-37 iron and upto 60%silica) and arethen known as “ferruginous quartzites”. Ferruginous quartzites call for special methods ofdressing perpartion prior to smelting. The colour of magnetite is dark gray to black and aspecifc gravity 5.16 to 5.18. the magnetic property is important for it primary explorationby magnetic method and makes possible the megnetic separation of magnetite fromgangue materials to produce a high quality concentrate. Magnetite occurs in igneous,metamorphic and sedimentary rocks.HEMATITES (Red Ores) Fe 2 O 3These iron ores contain 45% to 65% of iron. Hematite are easily reduceable to metallicform and iron from. It can be produced at a lower cost. It usually contains littlephosphorous and sulphur. Usually, hydrated hematites contains 25% to 50% of iron. Thecolour of hematite ore are from steel gray to dull or bright red. The specific gravity is5.26. it’s common varieties are termed crystalline; specular, martite, earthy, maghemite,and compact.LIMONITES (Brown Ores) Fe 2 O 3 .H 2 OThese iron ores contain57.14% of iron with a 25.3% of water combination. Limonite’sare porous minerals. Limonites is the name commonly given to hydrous iron oxides that11
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MY-101 - NED University

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