JNTUK B.Tech Mineral Dressing gives you detail information of Mineral Dressing R13 syllabus It will be help full to understand you complete curriculum of the year.
Course objective: The course presents the principles and methods of beneficiation of minerals from their ores. It covers the theory and working of various crushers, classifiers and other mineral beneficiation equipment to meet the industrial needs.
UNIT I : Learning objective: To study the scope of ore dressing and to describe the various crushers used in ore dressing Scope and objectives of ore dressing. Sampling of ores by different methods. Theory of liberation of minerals. Crushers: -Jaw, Gyratory, Cone, Rolls and toothed roll crushers.
UNIT II :Learning objectives: To understand the theory, principle and working of various ball mills used for size reduction Types of grinding operations like batch and continuous dry and wet grinding, open circuit and closed circuit grinding. Girnding Mills: Ball mills, theory of ball mill operation, rod and tube mills. Comminution laws: – Rittinger’s laws, Kick’s law and Bond’s law.
UNIT III : Learning objective: To explain the theory and principles of various sizing techniques. It also describes the movement of solids in fluids by explaining the effect of various parameters on the movement of solids. Sizing: Study of laboratory sizing techniques and reporting of sizing data. Industrial sizing units: Types of screen surfaces. Grizzlies, trommels, vibrating and shaking screens. Movement of solids in fluids: Stokes and Newton’s laws. Terminal velocity and its relation with size. Relation between time and velocity. Relation between distance traveled and velocity. Equal settling ratio, Free and hindered settling ratios. Quantifying concentrating operations: Ratio of concentration, recovery, selectivity index and economic recovery.
UNIT IV : Learning objectives: To discuss the principles and working of classifiers. Theoretical study of various heavy media separation methods will also be carried. Classification of classifiers, study of settling cones, rake classifier, spiral classifier and cyclones. Heavy media separation: Principles, flow chart, different media used. Heavy media separation using heavy liquids and heavy suspensions. Washability curves for easy, normal and difficult coal.
UNIT V : Learning objectives: The basic concepts involved in jigging and tabling will be detailed to understand the working of various jigging machines and other equipment involved with tabling.
Jigging: Theory of jigging. Jigging machines: hand jig, harz jig, denner jig baum jig, Hancock jig, James coal jig and halkyln jig. Design considerations in a jig. Tabling: -study of stratification on a table. Shaking tables, wilfley table. Humphrey’s spiral classifier.
UNIT VI : Learning objectives: To understand the principles and applications of flotation and other separation processes and to be get acquainted with the working of equipment used for floatation process.
Flotation: Principles of flotation, Factors affecting flotation. Classification of collectors and frothers. Regulators factors affecting their efficiency. Flotation machines: -Pneumatic and mechanical flotation cells. Application of flotation process for Cu,Pb and Zn ores. Magnetic separation processes and electrostatic separation process.
(Assessment: The student should be evaluated based on the assignments and objective tests. The student’s analytical abilities (with special focus on academically weak students) should be tested periodically in classes by giving problems). Emphasis should be given by conducting tutorial classes at the end of each unit.
TEXT BOOK
- Principles of Mineral Dressing by A.M. Gaudin.
REFERENCES
- Elements of Ore Dressing by A.F. Taggart
- Mineral processing technology-.A. Wills
- Ore dressing practies-S.K.Jain.
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