MEASUREMENT OF FACTORS AFFECTING SCREENING EFFICIENCY, METHODS FOR USE UNDER WORKING CONDITIONS

THIS PAPER DESCRIBES METHODS FOR MEASURING, UNDER WORKING CONDITIONS, THE CHARACTERISTICS OF COMMERCIAL SCREENING PLANT. THESE METHODS HAVE BEEN DEVELOPED BY THE ROAD RESEARCH LABORATORY AS PART OF A PROGRAMME OF RESEARCH INTO THE PROBLEMS ARISING IN THE PRODUCTION OF ROADMAKING AGGREGATES TO MEET BRITISH STANDARD SPECIFICATIONS. EARLIER PAPERS GIVE A DESCRIPTION OF INVESTIGATIONS MADE UNDER LABORATORY CONDITIONS TO DEVELOP A FORMULA FOR EXPRESSING THE EFFICIENCY OF SEPARATION OF A SCREEN AND TO STUDY THE FACTORS AFFECTING THIS EFFICIENCY. THE METHODS DESCRIBED INCLUDE THE MEASUREMENT OF THE EFFICIENCIES OF SEPARATION OF EACH OF THE SCREENS OF A COMMERCIAL PLANT FROM THE GRADING AND OUTPUT OF THE SCREENED CHIPPINGS, OF AMPLITUDE AND FREQUENCY OF VIBRATION BY MEANS OF A STROBOSCOPE, OF ANGLE OF SLOPE BY MEANS OF A CLINOMETER AND APERTURE SIZE BY MEANS OF SPECIALLY DESIGNED TAPER GAUGES. THE PAPER ALSO DESCRIBES HOW THE INFORMATION CAN BE OF DIRECT USE TO THE QUARRY OPERATOR. /RRL/A/

• Supplemental Notes:
  • Vol 49, No 4, APR65, PP 161-165, 2 FIG, 4 TAB, 2 PHOT, 5REF
• Authors:
  • Hosking, J R
• Publication Date: 1965-4

Media Info

• Serial:
  • Quarry Managers Journal /UK/

Subject/Index Terms

• TRT Terms: Aggregate gradation; Aggregates; Analysis; Economic efficiency; Equipment; Field tests; Measurement; Measuring instruments; Quarrying; Screenings; Screens; Specifications
• Uncontrolled Terms: Efficiency; Field measurements; Separation
• Geographic Terms: United Kingdom
• Old TRIS Terms: Measuring apparatus
• Subject Areas: Economics; Geotechnology; Highways;

Filing Info

• Accession Number: 00217517
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Dec 12 1994 12:00AM