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This is the complete lecture note for MNE304 Mineral Processing Technology. You can read it online below, open it in the full viewer, or download the PDF for offline study. It pairs with the course's video lectures, so you can read and watch together.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS • Course code: MNE 304 • Course title: Mineral Processing Technology • Course credit load: 3 Series 1: Foundations of Ores and Minerals Series outline • 1.1 Ores, Minerals, and Rocks o 1.1.1 Definition and classification of ores o 1.1.2 Mineral types and rock-forming processes o 1.1.3 Economic significance of ores and minerals
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS • 1.2 Structures and Textures of Minerals o 1.2.1 Crystallographic structures o 1.2.2 Textural features and genesis o 1.2.3 Implications for mineral treatment • 1.3 Ore Analysis Techniques o 1.3.1 Qualitative assaying methods o 1.3.2 Quantitative chemical analysis o 1.3.3 Mineralogical analysis techniques • 1.4 Significance in Mineral Processing o 1.4.1 Relationship between mineral properties and processing methods o 1.4.2 Case examples of mineral genesis influencing treatment o 1.4.3 Practical applications in laboratory and industry Introduction Minerals are the foundation of the materials we use every day, from the metals in our mobile phones to the cement in our buildings. Before these resources can be processed and transformed into useful products, it is essential to understand their natural occurrence, structures, and properties. This Series sets the stage for the entire course by introducing you to the basic concepts of ores, minerals, and rocks, and by showing how their characteristics influence the methods used in mineral processing. The aim of this Series is to equip you with the knowledge and skills needed to define, classify, and analyse ores and minerals, and to explain how their structures and textures determine their treatment in mineral processing. We shall commence this Series by exploring the definitions and classifications of ores, minerals, and rocks, and their economic significance. Next, we will examine the structures and textures of minerals, considering their crystallographic and textural features and their implications for mineral genesis and treatment. Following that, we will study ore analysis techniques, including qualitative and quantitative assaying and mineralogical analysis. Finally, we will wrap up by discussing the significance of these foundations in mineral processing, linking mineral properties to practical applications in laboratory and industry. Series Learning Outcomes
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Upon completing this Series, you should be able to: • SLO 1.1 define ores, minerals, and rocks, and classify them according to their properties and economic significance, • SLO 1.2 explain the crystallographic structures and textural features of minerals and analyse their role in mineral genesis and treatment, • SLO 1.3 demonstrate qualitative and quantitative ore analysis techniques, including chemical and mineralogical methods, • SLO 1.4 evaluate the significance of mineral properties in determining appropriate processing methods and practical applications. 1.1 Ores, Minerals, and Rocks 1.1.1 Definition and classification of ores An ore is a naturally occurring material that contains valuable minerals which can be extracted profitably. The classification of ores is based on factors such as mineral content, grade, and economic viability. For example, iron ore is classified according to its iron content, while bauxite is classified by its aluminium oxide concentration. Fill in the blank: An ore is a naturally occurring material that contains ______ minerals which can be extracted profitably. Diagram showing different types of ores and their classifications Figure 1.1: Classification of ores
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS 1.1.2 Mineral types and rock-forming processes A mineral is a naturally occurring inorganic substance with a definite chemical composition and crystalline structure. Minerals combine to form rocks, which are broadly classified into igneous, sedimentary, and metamorphic types. Igneous rocks form from cooled magma, sedimentary rocks form from compacted sediments, and metamorphic rocks form when existing rocks are altered by heat and pressure. Fill in the blank: Rocks are broadly classified into ______, sedimentary, and metamorphic types. Photographs of igneous, sedimentary, and metamorphic rocks Plate 1.1: Examples of rock types 1.1.3 Economic significance of ores and minerals The economic significance of ores and minerals lies in their role as raw materials for industries. For instance, copper ores are vital for electrical wiring, while limestone is essential in cement production. The profitability of mining depends on factors such as ore grade, extraction costs, and market demand. Fill in the blank: The profitability of mining depends on ore grade, extraction costs, and ______ demand.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Box 1.1: Selected examples of economically significant minerals Pilot questions 1.1 1. Define ore and explain how it is classified. 2. Distinguish between minerals and rocks. 3. Identify the three main types of rocks and describe how each is formed. 4. State two examples of economically significant minerals and their uses. 5. Explain one factor that influences the profitability of mining. 1.2 Structures and Textures of Minerals 1.2.1 Crystallographic structures A crystallographic structure refers to the orderly arrangement of atoms within a mineral. This arrangement determines the mineral’s physical properties such as hardness, cleavage, and optical behaviour. For example, diamond and graphite are both composed of carbon, yet their different atomic arrangements result in vastly different properties. Fill in the blank: Diamond and graphite are both composed of ______, yet their atomic arrangements make them very different.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Diagram comparing atomic structures of diamond and graphite Figure 1.2: Crystallographic structures of diamond and graphite 1.2.2 Textural features and genesis Texture in minerals refers to the size, shape, and arrangement of mineral grains within a rock. Textural features provide clues about the genesis, or origin, of the mineral deposit. For instance, fine-grained textures often indicate rapid cooling of magma, while coarse-grained textures suggest slower cooling. Textures also influence how easily minerals can be liberated during processing. Fill in the blank: Fine-grained textures often indicate ______ cooling of magma.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Photographs of fine-grained and coarse-grained rock textures Plate 1.2: Examples of mineral textures 1.2.3 Implications for mineral treatment The implications of mineral structures and textures for treatment are significant. Minerals with complex structures may require more intensive comminution, while certain textures can enhance or hinder separation processes. For example, minerals with interlocking grains are harder to liberate, whereas those with distinct boundaries are easier to separate. Understanding these features allows engineers to design more efficient processing flowsheets. Fill in the blank: Minerals with interlocking grains are harder to ______ during processing.
LA-NET | ONLINE LEARNING VIDEO PLATFORM FOR POST-SECONDARY & HIGHER INSTITUTION STUDENTS Box 1.2: Influence of mineral structures and textures on processing methods Pilot questions 1.2 1. Define crystallographic structure and explain its importance in mineral properties. 2. Distinguish between fine-grained and coarse-grained textures. 3. Explain how textural features provide clues about mineral genesis. 4. Describe one implication of mineral texture for processing. 5. Give an example of how atomic arrangement affects mineral properties. 1.3 Ore Analysis Techniques 1.3.1 Qualitative assaying methods Qualitative assaying refers to the identification of the types of minerals present in an ore without measuring their exact quantities. This involves techniques such as visual inspection, flame tests, and simple chemical reactions that reveal the presence of specific elements. For example, a flame test can show sodium by its bright yellow colour. These methods are often used as preliminary steps before more detailed quantitative analysis. Fill in the blank: A flame test can reveal the presence of ______ by its bright yellow colour.
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