31453 - Raw Materials Engineering T

Learning outcomes

Non energetic Raw material engineering is a course finalised to learn the principles of mineral processing and to give the basic information related to mechanical treatment and plant design in order to obtain raw material prepared for the industry and for  construction.

Course contents

Requirements/Prior knowledge

A prior knowledge and understanding of Phisics and Chemical is required to attend with profit this course.

No mandatory requirements

Fluent spoken and written Italian is a necessary pre-requisite: all lectures and tutorials, and all study material will be in Italian.

Course Contents

Brief history on some materials and some types of plants. The main properties of minerals and rock materials. The size of a set of particles. Achievement in the laboratory analysis of grain and their analytical representation. The size classification: direct and indirect classification methods. The screening industry. Main types of screens: capacity and efficiency. Theoretical basis of the indirect classification: the law of motion of a solid immersed in a fluid. The mechanical and centrifugal classifiers. The hydrocyclones. The performance of the classification action. The pretreatment and primary treatment of physico-mechanical waste water. The comminution. Comminution theory for the determination of energy consumption. Definition and calculation of the work (work index) and specific energy in comminution. Crushing and Grinding. Design and operating parameters. The cylindrical ball mills and bars: the calculation of energy consumption, choice of grinding charge and coating. Concentration methods. The preconcentrazione in heavy medium (sink-float). Gravimetric methods: Electrostatic and magnetic separation. The flotation: theoretical and physical chemical basis. The technology of flotation machines. Specific cases of design: general patterns of a complete mineral enrichment plant, recycling plant and of a plant for the aggregates preparation.

Readings/Bibliography

Materials and presentations by the teacher.

At the Terracini Library:

Wills, Mineral processing technology, Pergamon Press

Teaching methods

Planned learning activities and teaching methods

 

Oral speaking by teacher in class on all the program issues.

Exercises in class related on the main demonstration and calculation that are present in the course topics,

DICAM LAGIRN Laboratory visit, in order to see the main machineries that are considered in class.

Assessment methods

Firstly, a written assignment is due on topics, as exercises and demonstrations, similar to which carried out by teacher and students together in class.

It's required to achieve the minimum mark, 18/30, in the written test to be called for oral exam. The written mark could remain available for a year.

The oral exam focuses first on the discussion of mistakes of the written test. Then a couple of questions on the whole program will be the subject of the oral interview

 

Teaching tools

Ppt presentations

Videos

Office hours

See the website of Alessandra Bonoli