| Course Unit Code | 546-0376/01 |
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| Number of ECTS Credits Allocated | 5 ECTS credits |
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| Type of Course Unit * | Compulsory |
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| Level of Course Unit * | First Cycle |
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| Year of Study * | Third Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
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| Name of Lecturer(s) | Personal ID | Name |
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| HLA54 | Ing. Miluše Hlavatá, Ph.D. |
| MUD0002 | Ing. Jaroslav Mudruňka, Ph.D. |
| Summary |
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The course comprises of preparatory technological processes of crushing and
grinding. Those processes serve for the preparation of material charge for the
preparation plant. The next process of sizing is used for the pre-processing
as well as the final processing of mineral resources. The individual
principles of preparatory processes are complemented with technological
information, structural designs of machinery and equipment used in material
dressing. |
| Learning Outcomes of the Course Unit |
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| The aim of the subject Mechanical Activation is to define technologies which will prepare raw materials for further processing or final treatment. Interpretation of the gained information will permit evaluation whether the raw material or waste may be processed or if more preparatory operations will be needed. |
| Course Contents |
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1. Working processes of raw material preparation, detailed specification of preparatory processes of mechanical loosening of mineral resources, purpose of crushing and grinding
2. Representation of crushing and grinding methods, decisive properties for the selection of suitable crushers and mills
3. Degree of crushing and grinding, cutter machines according to the degree of crushing, losses during crushing and grinding, crushing in open and closed circuits
4. Facilities for crushing – crushers, jaw crushers, principle of crushing in jaw crushers.
5. Cone crushers – acute-angled, obtuse-angled, principle of crushing in cone crushers.
6. Roll crushers – single-roll crushers, two-roll crushers with smooth rolls, with spiked rolls, three-roll and four-roll crushers
7. Hammer crushers, impact crushers, disintegrators - their description, characteristics and utilization.
8. Grinding – significance, areas where mills are vital technological facilities, ball mills, grinding bodies of ball mills, unloading ball mills
9. Bar mills, vibration ball mills, autogenous grinding, special methods of grinding and their application. Machines and equipment for conditioning of waste
10. Sorting of mineral resources and products of preparation; substance and significance of sizing on screens and sieves, sizing efficiency, sizing procedure.
11. Sizing areas – classification according to the method of production and material character.
12. Grizzly screens, their characteristics, main types. Grading screens, types, characteristics, examples of screens, dewatering and desliming sieves
13. Grading cyclone thickeners, principle, their function, diagram, examples of application, air separation
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| Recommended or Required Reading |
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| Required Reading: |
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Paul Schmidt, Rolf Körber, Matthias Coppers:Sieben und Siebmaschinen : Grundlagen und Anwendung.ISBN 3-527-30207-7 (váz.), c2003, Wiley-VCH,210 p.
Handbuch der mechanischen Verfahrenstechnik : Partikeleigenschaften, Mikroprozesse, Makroprozesse, Zerteilen, Agglomerieren, Trennen, Mischen, Schüttgut. Band 1, Heinrich Schubert (Herausgeber). - Weinheim : Wiley-VCH, c2003 - xxviii, 498 p. : il. ISBN 3-527-30577-7
Handbuch der mechanischen Verfahrenstechnik : Partikeleigenschaften, Mikroprozesse, Makroprozesse, Zerteilen, Agglomerieren, Trennen, Mischen, Schüttgut. Band 2, Heinrich Schubert (Herausgeber). - Weinheim : Wiley-VCH, c2003 - xxviii, p. 500-1271 : il. ISBN 3-527-30577-7 |
Věra Sedláčková, Pavel Sedláček. Přípravné procesy. Ostrava : VŠB - Technická univerzita Ostrava, 2004 - 114 s. ISBN 80-248-0582-0
František Špaldon. Úprava nerastných surovín. 1. vyd. - Bratislava : Alfa, 1986 - 480 s.
Peter Baláž. Mechanická aktivácia v procesoch extrakčnej metalurgie. 1. vyd.. - Bratislava : Veda, 1997 - 231 s. : il. ISBN 80-224-0467-5 (brož.) |
| Recommended Reading: |
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General work input function for sizing grinding ball mills
Zambrano, A.R.
Midland Research Center, Nashwauk, MN, United States
Minerals and Metallurgical Processing v 19 n 4 November 2002. p 178-184 , 2002
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| Milan Holbein a kol. Úpravnictví. - Vyd. 1.. - Praha : SNTL - Nakladatelství technické literatury, 1983 - 261 s. |
| Planned learning activities and teaching methods |
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| Lectures, Tutorials, Experimental work in labs, Other activities |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Exercises evaluation and Examination | Credit and Examination | 100 (100) | 51 |
| Exercises evaluation | Credit | 33 (28) | 17 |
| písemka | Written test | 10 | 5 |
| Laboratorní práce | Laboratory work | 15 | 7 |
| jiný typ úlohy | Other task type | 3 | 3 |
| Examination | Examination | 67 | 34 |