The aim of this course is to offer an outline of the technologies employed in the processing of raw materials. By raw materials we mean solid georesources with a market value destined for use in industry. Knowledge of the properties of solids shall be the starting point for the identification of the best physical and mechanical process techniques to adopt to obtain a raw material. The operations that shall be considered include solid separation and treatment methodologies based on the physical and mechanical properties of the materials. Some of the most important examples of mineral processing for the production of primary materials shall be examined, and at the end of the course the students shall be able to design a treatment plant on the basis of the knowledge acquired during the course.
The aim of this course is to offer an outline of the technologies employed in the processing of raw materials, solid georesources with a market value destined for use in industry. Knowledge of the properties of solids shall be the starting point for the identification of the best physical and mechanical process techniques to adopt to obtain a raw material, reducing as far as possible the volume of mine waste and providing solution to recycle barren. The operations that shall be considered include solid separation and treatment methodologies based on the physical and mechanical properties of the materials. Some of the most important examples of mineral processing for the production of primary materials shall be examined, together with study cases of mine waste recovery and barren recycling. Finally the students shall be able to design a treatment plant on the basis of the knowledge acquired during the course.
The subject is inherently linked to the courses of resources and environmental substainability, planning of substainable mining and environmental management of soil, water and groundwater in geoengineering.
The students should develop the ability to identify the best methodologies to apply in order to obtain a free substance that can be used as a raw material from natural resources. The student shall have the possibility of testing the physical and mechanical properties of some minerals/rocks in the laboratory and by means of different separation methodologies to reach a valuable yeld of the desired substance. At the end of the course, the students shall be able to plan a process treatment obtaining the free raw material from the additional components to which it is connected in nature. The analysis and observation capacities acquired over the three year degree course shall be necessary for this purpose.
The students should develop the ability to:
identify the properties of a unknown material (mineral, barren, tailings)
plan the steps needed to reach the desired products through a physical-mechanical treatment process
verify the validity of the results of tests carried out by them amd by other laboratories
identify the discrepancies between the expected result and the one obtained and be able to trace their causes
The students should have knowledge of the fundamentals of physics, chemistry, statistics and material sciences. They should also be capable of carrying out preliminary evaluations and make general process designs to obtain raw materials.
The students should have knowledge of the fundamentals of physics, chemistry, statistics and material sciences in order to be capable of carrying out preliminary considerations to detect the main properties of materials.
Concepts on raw materials. Solid georesources production and economic layout. UE guide lines on soustainability
Sampling - Concepts on liberation of the grain, yield and concentration - Separation and recovery efficiency Physical and mechanical main properties - laboratory test methods
General concepts pertaining to comminution. Alternative and rotating crushing machines; roller mills, impact crushers, milling, general concepts and technologies pertaining to screening
industrial classification in a fluid medium, by fall, counter-current, mechanical, centrifuge, the pneumatic classifying systems, sink-float separation, hydraulic and pneumatic table flotation, magnetic separation, electric separation
Natural stones and aggregates - laboratory test for CE marking of natural stones and aggregates - the weathering of natural stone – the ageing tests – in situ measurements
Examples of mineral processing plants: minerals for the glass, ceramic and refractory industries, limes and cement, gold, suphides, coal ,iron.
Concepts on primary raw materials - Solid georesources production and economic layout - EU guide lines on sustainability - Sampling - Concepts on liberation of the grain, yield and concentration - Physical and mechanical main properties - laboratory test methods - General concepts pertaining to comminution - Alternative and rotating crushing machines; roller mills, impact crushers, milling, general concepts and technologies pertaining to screening - Separation and recovery efficiency - Industrial classification in a fluid medium, by fall, counter-current, mechanical, centrifuge, the pneumatic classifying systems, sink-float separation, hydraulic and pneumatic table flotation, magnetic separation, electric separation (15 h)
Natural stones and aggregates - laboratory test for CE marking of natural stones and aggregates - the weathering of natural stone – the ageing tests – in situ NTD measurements - recycling of cutting sludges – (3h)
Examples of mineral processing flowsheets and of barren recycling (3 h)
Practical exercises in laboratory on run of mine and mine waste: sampling, particle size analyses, differential comminution, magnetic and electrostatic separation, densimetric separation in fluid medium, floatation, determination of the physical mechanical properties of stone materials. (21 h)
Visits to industrial plants are planned in order to allow students to understand the real complexity of a treatment plant (10 h)
Design of a process plant that will be presented during the final lesson. (8 h)
In the lecture rooms: theory lectures.
Practical exercises shall be carried out in the laboratory on: sampling, particle size analyses, differential comminution, magnetic separation, densimetric separationin fluid medium, flotation, mechanical strength of rock samples, determination of the physical properties of stone materials.
Visits to industrial plants are planned in order to allow students to understand the real complexity of a treatment plant.
The last part of the course will be devoted to the design of a process plant that will be presented during the final lesson.
The course is organized as in the following:
- in the lecture rooms, theory lectures (22 h);
- practical exercises in laboratory (21 h);
- visits to different industrial plants (10 h);
- design of a process plant that will be presented during the final lesson (the last 8 h).
Lectures are devoted to the presentation of the course topics, in their theoretical aspects and applicative examples.
Exercises classes shall be carried out in the Solid Processing Lab where students, in workgroups, will apply the treatment processes learned in the theoretical lessons, on samples of different materials, with the assistance of the instructor.
Visits to industrial plants are planned in order to allow students to understand the real complexity of a treatment plant
Notes shall be made available by the lecturer.
Moreover, the following texts can be consulted in DIATI library:
Barry A. Wills - Mineral Processing Technology : An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery, Edition 7, 2011, Butterworth-Heinemann
Gupta and D. S. Yan - Mineral Processing Design and Operation : An Introduction, 2006, Elsevier
Manning D.a.C. Introduction to industrial minerals. Chapman and Hall Ed. , 1995
Industrial Minerals (periodic)
Notes shall be made available by the lecturer.
Moreover, the following texts can be consulted in DIATI library:
Barry A. Wills - Mineral Processing Technology : An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery, Edition 7, 2011, Butterworth-Heinemann
Gupta and D. S. Yan - Mineral Processing Design and Operation : An Introduction, 2006, Elsevier
Manning D.a.C. Introduction to industrial minerals. Chapman and Hall Ed. , 1995
Industrial Minerals (periodic)
Modalità di esame: Elaborato scritto individuale; Elaborato progettuale in gruppo;
Exam: Individual essay; Group project;
...
The final evaluation is the average of the following two phases:
1) the project of treatment will be presented by each group on the last day of the lesson, to the colleagues of the course and to the experts called by the teacher (time for each presentation: 15 minutes). Its rating will weigh as much as 50% of the final vote.
2) Each student must deliver at least two days before the final examination a report on one of the didactic visits and a second report on one of the laboratory exercises carried out. The vote attributed to the reports will weigh for the remaining 50% of the final vote.
Gli studenti e le studentesse con disabilità o con Disturbi Specifici di Apprendimento (DSA), oltre alla segnalazione tramite procedura informatizzata, sono invitati a comunicare anche direttamente al/la docente titolare dell'insegnamento, con un preavviso non inferiore ad una settimana dall'avvio della sessione d'esame, gli strumenti compensativi concordati con l'Unità Special Needs, al fine di permettere al/la docente la declinazione più idonea in riferimento alla specifica tipologia di esame.
Exam: Individual essay; Group project;
The final evaluation is the average of the following two phases:
1) the project of treatment will be presented by each group on the last day of the lesson, to the colleagues of the course and to the experts called by the teacher (time for each presentation: 15 minutes). Its rating will weigh as much as 50% of the final vote.
2) Each student must deliver at least two days before the final examination a report on one of the didactic visits and a second report on one of the laboratory exercises carried out. The vote attributed to the reports will weigh for the remaining 50% of the final vote.
In addition to the message sent by the online system, students with disabilities or Specific Learning Disorders (SLD) are invited to directly inform the professor in charge of the course about the special arrangements for the exam that have been agreed with the Special Needs Unit. The professor has to be informed at least one week before the beginning of the examination session in order to provide students with the most suitable arrangements for each specific type of exam.