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High Strength Iron Oxide Pellets by Polymer Impregnation.

Public Domain


Details

  • Personal Author:
  • Description:
    A laboratory research program was initiated to determine the technical feasibility of utilizing organic polymers as binding materials for iron oxide pellets. Predried magnetite and hematite pellets impregnated with low-viscosity vinyl liquid monomers and polymerized in situ by thermal-catalytic techniques yielded compressive strengths equivalent to those reported by high- temperature induration plants. One-half-inch-diameter magnetite pellets containing less than 5 wt-pct poly(methyl methacrylate) gave compressive strengths in excess of 500 lb after polymerization at 80 deg c (176 deg f) and annealing at 200 deg c (392 deg f). Somewhat lower pellet strengths were obtained with methyl methacrylate- styrene and styrene-acrylonitrile copolymers. Polymer impregnation of both heat-hardened and cement-bonded pellets resulted in exceptionally high compressive strengths. The compressive strength of partially oxidized magnetite pellets (500 deg c (932 deg f) increased from about 100 lb to over 1,000 lb after impregnation with less than 5 wt-pct poly(methyl methacrylate). Similar strength increases were obtained after impregnation of green magnetite pellets containing from 2.5 to 5.0 pct portland cement binder. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Document Type:
    Text
  • Genre:
    Journal Article
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Division:
    TCRC - Twin Cities Research Center
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    125-144
  • Volume:
    12
  • NIOSHTIC Number:
    nn:10010646
  • Citation:
    Proc 12th Biennal Conf Inst for Briquetting and Aggl 1971 Aug; 12:125-144
  • Federal Fiscal Year:
    1971
  • Peer Reviewed:
    False
  • Source Full Name:
    Proc. 12th Biennal Conf. Inst. for Briquetting and Aggl., V. 12, August 1971, PP. 125-144
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
  • Download URL:
  • File Type:
    Filetype[PDF - 168.02 KB ]
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