Code: | MEMG0002 | Acronym: | DP |
Keywords | |
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Classification | Keyword |
OFICIAL | Technologies, Applied Sciences, Project |
Active? | Yes |
Responsible unit: | Mining Engineering Department |
Course/CS Responsible: | Master in Mining and Geo-Environmental Engineering |
Acronym | No. of Students | Study Plan | Curricular Years | Credits UCN | Credits ECTS | Contact hours | Total Time |
---|---|---|---|---|---|---|---|
MEMG | 7 | Plano de estudos oficial a partir de 2008/09 | 1 | - | 6 | 56 | 162 |
Teacher | Responsibility |
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Mário Rui Machado Leite |
Recitations: | 2,00 |
Laboratory Practice: | 2,00 |
Type | Teacher | Classes | Hour |
---|---|---|---|
Recitations | Totals | 1 | 2,00 |
Mário Rui Machado Leite | 2,00 | ||
Laboratory Practice | Totals | 1 | 2,00 |
Aurora Magalhães Futuro da Silva | 2,00 |
Development of a quantitative point of view of Treatment diagrams in operations. Study of the indicators which describe separation processes performance.
Flowsheet as "optimal solution".
Project: structural optimization and parametric optimization.
Competence in formulating and solving optimization problems in ore processing, and extending capabilities for optimization in related areas (engineering/physics).
1. Introduction to the course unit 1.1 Objectives of ore processing: preliminary characterization of ores properties and definition of the desired properties of the final product. Process design: structural optimization and parametric optimization. Notion of Process flow diagram: chaining rules of unit operations. 1.2 Concepts of separation and discharge, stages of mineral operations and general mineral diagram 1.3 Technical and technical-economical points of view. Sales agreement Economic benefit and net smelter return. 2. Introduction to treatment flow diagrams – base treatment flow diagrams 2.1 Classification base diagrams Classification diagrams: sand and kaolin Solid mass and water balance. Dimensioning problem. 2.2 Base fragmentation diagrams Fragmentation diagrams: crushing and crushed stone, inerts and pyrites granulation; Limestone milling for cement and corrective, talc; milling diagrams by humid via; autogenous milling diagrams. 2.3 Separation base diagrams. Concentration diagrams: general concepts of application (metallic ores vs. non-metallic; high-grade ores vs. low-grade ores); concentration units 3. Treatment diagram analysis: an operational point of view over a running facility 3.1 Theory of separation methods 3.3.1 Problem proposition 3.3.2 Partition or Tromp curve: ideal separation and real separation; types of inefficiencies 3.3.3 Heidenreich curves 3.3.4 Washability curves: limit or potential washability and real washability 3.2 Fragmented ores sampling 3.3. Mineral balances: analysis of recovery calculation variance 3.4 Reconciliation of superabundant data in mass balance calculation 3.5 Analysis of complex circuits 4. Knowledge in treatment diagrams 4.1 Qualitative and quantitative diagrams 4.2 Different types of diagrams presented as “studied cases”: Flotation (global and differential of sulphides and non-sulphides); magnetic separation; gravity concentration. 4.3 Diagrams which operate on Portuguese ores: Cu-Pb-Zn in Aljustrel; Cu and Cu-Sn in Neves-Corvo; WO3- Sn-Cu in Panasqueira, special sands in Rio Maior and Seixoso; Coal in Pejão. 4.4 Diagrams used in industrial and urban waste treatment, sludge treatment and water and effluent treatment.
5. Models of Unit Operations of grinding and Circuit Simulation.
6.Model of processes separation: Screen; Hydrocyclone; Separations by grade and libertation.
7. Model of froth flotation.
Programme of the practical classes 1st Part – Data collection Aims: - (Empirically) handle distribution properties - Carry out a separation operation (rigorously define operation variables and their influence on process performance) - (Experimentally) determine properties distributions of products resulting from separation using the following techniques: - Granulometric analysis by sieving - Granumoletric analysis by cyclosizer - Granumoletric analysis by laser ray diffraction - Grain counting using a magnifying glass - Point counting using the microscope - Analysis by dense liquid - Analysis by the magnetic separation (discs, or Dings tube or Frantz) 2nd part – Circuit analysis Aims – To develop mass balance and data reconciliation calculation, making use of experimental determinations: - Determination of Partition, Heidenreich and Washability curves (comparison with Mayer curves)
Theoretical classes – Presentation of the fundamental concepts of the design of process flow diagrams, ore preparation and study of mathematical concepts which enable the use of quantitative approaches. Practical classes- Experimental assignments to determine properties distributions- classification by sieving and cyclosizer and distributions of contents by microscope point counting. Separation tests – sieving, hydroclassification (Akins) Resolution of practical problems; exercises of application of mathematical models to describe the balance of materials which operate in a process flow diagram.
Designation | Weight (%) |
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Exame | 50,00 |
Participação presencial | 0,00 |
Prova oral | 10,00 |
Trabalho escrito | 40,00 |
Total: | 100,00 |
Designation | Time (hours) |
---|---|
Elaboração de relatório/dissertação/tese | 10,00 |
Estudo autónomo | 76,00 |
Frequência das aulas | 56,00 |
Trabalho de investigação | 20,00 |
Total: | 162,00 |
Students are obligied to attend at least 75% of the lectures and also perform the specific work.
Students must perform both the continuous evaluation component and final examination.
In distributed component assessment each student will perform a work of a model of a specific circuit. Each student or group of students, will present orally their work to classmates and teachers.
Final standings: Final examination-50% Distributed Assessment – 50%.