QUARRYING AND PREPARATION OF RAW MATERIALS: RIPPERS, PORTABLE CRUSHERS, MIXING BEDS
BECAUSE OF THE EFFECT OF VIBRATIONS DUE TO BLASTING UPON SURROUNDINGS OF QUARRIES IT MAY BECOME NECESSARY TO RESTRICT OR STOP THE BLASTING OPERATIONS. IN SUCH CASES, WHEN DEALING WITH SUITABLE AND RELATIVELY LOOSE ROCK, IT MAY BE POSSIBLE TO QUARRY THE RAW MATERIAL BY RIPPING AND THEN SHIFTING IT WITH THE AID OF HEAVY CRAWLER VEHICLES. THE MOST IMPORTANT FACTORS IN THE CHOICE OF EQUIPMENT ARE THE ENGINE POWER AND THE WEIGHT OF THE CRAWLER VEHICLE. SOME EXPERIENCE WITH THE USE OF RIPPING IN THE CEMENT INDUSTRY IS ALREADY AVAILABLE. WITH PORTABLE CRUSHING PLANTS IT IS POSSIBLE TO AVAIL ONESELF OF THE ECONOMIC AND OPERATIONAL ADVANTAGES OF CONTINUOUS MATERIALS HANDLING IN THE QUARRY AS WELL. A NUMBER OF FAIRLY LARGE INSTALLATIONS ARE IN USE. RECENT DEVELOPMENTS SHOW THAT WALKING MECHANISMS WHEREBY SUCH INSTALLATIONS CAN MOVE FROM ONE LOCATION TO ANOTHER ARE GAINING IN IMPORTANCE. CRUSHED STONE STOCKPILES ENABLE THE QUARRYING OPERATIONS TO BE PERFORMED MORE ECONOMICALLY AND ALSO, BY PREHOMOGENISING OF THE RAW MATERIAL, PROVIDE THE CONDITIONS FOR WELL-CONTROLLED KILN RUNNING. THERE ARE VARIOUS SYSTEMS OF STOCKPILING AND RECLAIMING THE MATERIAL, ALL OF WHICH REQUIRE A GREATER OR LESS EXPENDITURE IN RESPECT OF TECHNICAL CONTROL EQUIPMENT. /AUTHOR/
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Supplemental Notes:
- Vol 57, No 2, PP 56-62
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Authors:
- Sillem, H
- Publication Date: 1968-2
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Crawler tractors; Crushers; Economics; Materials management; Portable equipment; Presplitting (Blasting); Quarries; Quarrying; Tearing
- Old TRIS Terms: Rippers
- Subject Areas: Economics; Highways; Materials; Vehicles and Equipment;
Filing Info
- Accession Number: 00212626
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 15 1994 12:00AM