BE549772A - - Google Patents
Info
- Publication number
- BE549772A BE549772A BE549772DA BE549772A BE 549772 A BE549772 A BE 549772A BE 549772D A BE549772D A BE 549772DA BE 549772 A BE549772 A BE 549772A
- Authority
- BE
- Belgium
- Prior art keywords
- heads
- coal
- motor
- mining machine
- cutting
- Prior art date
Links
- 239000003245 coal Substances 0.000 claims description 37
- 238000005520 cutting process Methods 0.000 claims description 20
- 238000013138 pruning Methods 0.000 claims description 10
- 238000005065 mining Methods 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 150000001768 cations Chemical class 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 210000003128 head Anatomy 0.000 description 47
- 210000005069 ears Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003197 gene knockdown Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
- E21C27/22—Mineral freed by means not involving slitting by rotary drills with breaking-down means, e.g. wedge-shaped drills, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Harvesting Machines For Specific Crops (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE549772A true BE549772A (de) |
Family
ID=175894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE549772D BE549772A (de) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE549772A (de) |
-
0
- BE BE549772D patent/BE549772A/fr unknown
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