THE SKIN-DEEP BEAUTY PROBLEM

BECAUSE RECENT SPECIFICATIONS FOR FINE AGGREGATES CALL FOR MORE EVENLY GRADED MATERIALS AND THE PRESENCE OF MINUS 50 AND MINUS 100 MESH SIZES, EQUIPMENT WAS DESIGNED TO ASSURE RETENTION OF THESE MATERIALS; AS A RESULT, SOME LIGHTWEIGHT DELETERIOUS MATERIALS WERE ALSO RETAINED IN THE PRODUCT. AFTER A DESCRIPTION OF MEANS THAT HAVE BEEN ADOPTED TO COMBAT THIS PROBLEM, THE AUTHOR DESCRIBES EQUIPMENT DESIGNED BY HIS COMPANY (EAGLE IRON WORKS, DES MOINES) THAT TAKES ADVANTAGE OF A PHENOMENON OBSERVED IN OTHER EQUIPMENT, VIZ., THAT LIGHTWEIGHT PARTICLES RIDE ON THE SURFACE OF THE DENSE SLURRY IN THE BOTTOM OF SCREW WASHERS. THE DESIGN AND OPERATION OF THE NEW EQUIPMENT---CALLED THE SLURRY REFUSE SEPARATOR---ARE DESCRIBED AND ILLUSTRATED.

• Supplemental Notes:
  • 12 Pp, 9 FiG
• Corporate Authors:

  National Sand and Gravel Association

  /55 Ann Convention
  ,   United States 
• Authors:
  • Ford, S G
• Publication Date: 1971-1

Subject/Index Terms

• TRT Terms: Coarse grained materials; Density; Fine aggregates; Fractions; Particles; Sensors; Slurry
• Uncontrolled Terms: Removal; Separation
• Old TRIS Terms: Coarse materials; Jigs; Slurries
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00217885
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 1 1971 12:00AM