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Fluidized Coke-Bed Chlorination of Ilmenites.


PB258104

Publication Date 1976
Personal Author Harris, H. M.; Henderson, A. W.; Campbell, T. T.
Page Count 24
Abstract The Bureau of Mines investigated chlorination of domestic ilmenites in a fluidized coke bed at temperatures of 950 to 1,150C. Objectives were to develop an effective process for producing TiCl4 suitable for TiO2 pigment and to reduce pollution by collecting and treating waste byproduct chlorides. The reactor for these tests was a 10.2-cm-diam quartz tube heated externally by electrical resistance heaters. Ilmenite concentrate powders were introduced at the bottom of the fluid-bed reactor using the chlorine gas stream as a carrier. Test results showed that greater than 90 pct of the ilmenite reacted at optimum conditions and recovery of TiCl4 ranged from 95 pct to 99 pct of stoichiometric. A temperature-controlled cyclone was used to remove high-boiling-point chlorides, unreacted ilmenite and coke dust. Impure TiCl4 and FeCl3 were separated by fractional condensation. Liquid TiCl4 was purified to meet specifications for pigment-grade chloride. Integrated tests were conducted in which chlorine, produced by dechlorination of FeCl3 with oxygen, was recycled and used directly in a fluidized-bed chlorinator.
Keywords
  • Titanium compounds
  • Ilmenite
  • Chlorination
  • Fluidized bed processing
  • Metallurgical coke
  • Separation
  • Titanium dioxide
  • Titanium chlorides
  • Iron chlorides
  • Distillation
  • Waste processing
  • Industrial wastes
  • Mine wastes
Source Agency
  • Bureau of Mines
NTIS Subject Category
  • 71N - Nonferrous Metals & Alloys
  • 48A - Mineral Industries
Corporate Authors Bureau Of Mines, Albany, Oreg. Albany Metallurgy Research Center.
Document Type Technical Report
Title Note Rept. of investigations 1976.
NTIS Issue Number 197626
Fluidized Coke-Bed Chlorination of Ilmenites.
Fluidized Coke-Bed Chlorination of Ilmenites.
PB258104

  • Titanium compounds
  • Ilmenite
  • Chlorination
  • Fluidized bed processing
  • Metallurgical coke
  • Separation
  • Titanium dioxide
  • Titanium chlorides
  • Iron chlorides
  • Distillation
  • Waste processing
  • Industrial wastes
  • Mine wastes
  • Bureau of Mines
  • 71N - Nonferrous Metals & Alloys
  • 48A - Mineral Industries
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