542-0429/04 – Preparatory Processes (PRP)
| Gurantor department | Department of Mining Engineering and Safety | Credits | 7 |
| Subject guarantor | Ing. Dagmar Čechová, Ph.D. | Subject version guarantor | Ing. Vlastimil Řepka, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2005/2006 | Year of cancellation | 2014/2015 |
| Intended for the faculties | HGF | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Understanding patterns of mechanical size reduction of raw material, agents influencing effect of classification. Identify and design utilization of suitable plant with the view to characteristics of current processing raw materials.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
Theory of crushing and milling. Machinery for crushing and millig. Technology
of crushing and milling.
Theory of screening. Machinery for screening. Technology of screening.
Compulsory literature:
Recommended literature:
Tichánek,F., Botula,J., Řepka,V.: Mineral processing, VŠB TU Ostrava, 2005, 1.edition, page number 93, ISBN 80 – 248 – 0813 -7
Additional study materials
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
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Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1. Physical and mechanical properties of raw materials.
2. Purpose and reasons for inclusion of the mechanical size reduction in the treatment technology. Technological procedures for diminution, purpose and reasons for their use.
3. Theory of diminutions process, losses created by the diminution, their size separation and possibility of reduction.
4. Crushability, grindability – determination, the crushing degree, the relative grindability.
5. Rough crushing, the main types of used crushers.
6. Medium and fine crushing, the main types of used crushers.
7. Grinding, the main types of mills, construction, function, conditions for optimal grinding,
using.
8. Screening, factors affecting screening, screening efficiency, screening and mechanical factor
9. Screening areas.
10. Bar screens, types, functions.
11. Steady motion screening area screens.
12. Vibration motion screening area screens.
13. Multi-frequency screens.
14. Specific types of classifiers.
15. Washing, the purpose, types of equipment.
16. Distribution, classifiers, purpose, types of equipment.
17. Pneumatic classification.
Exercise:
1. Determination of specific gravity of aggregate
Pycnometric according to CSN 72 1171
2. Bulk density of aggregates according to CSN 72 1171¨
Bulk density according to CSN 72 1171
Porosity - the calculation of the measured values of density and density according to CSN 72 1171
Voids - calculation from the measured values of bulk density and density according to CSN 72 1171
3. Determination of density of coarse aggregate by weighing in the air and in the water according to CSN 72 1171
4. Shape index of coarse aggregate - a description of the shape of grains by measuring and calculated values and calculation of the volumetric coefficient according to CSN 72 1172
5. Mechanical analysis of aggregates according to CSN 72 1172
6. Wet screening of fine-grained material according to CSN 01 5030
7. Abrasion test
Abrasion index according to VU Přerovské Strojírny
8. Determination of work index Wi examination in a laboratory crusher.
9. Determining of crushability of material by determining the reduction ratio.
10. Determination of particle sedimentation analysis by Casaqranda according to CSN 72 1127
11. Determination of grindability
12. Excursion about aggregates - Jakubčovice.
13. Determination of particle sedimentation analysis by Andreasen according to CSN 72 1127
14. Final practice, repetition, credit.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction