| 摘要 |
Apparatus for beneficiating titaniferous ores to produce essentially pure titanium dioxide by alternatingly contacting the ore at a temperature of 700 DEG to 1250 DEG C with carbon monoxide for a short period of time and then chlorine for a short period of time and then repeating the alternate steps of contacting the ore with carbon monoxide and chlorine, said apparatus comprising a fluid bed reactor containing a bed support consisting of a perforated plate or fritted disc beneath which is a compartamentalized gas plenium chamber, each compartment of the chamber being served by a gas feed line whereby sequential and alternating zones of carbon monoxide and chlorine are encountered by the ore proceeding through the fluidized bed, an overhead outlet tube by which gases are exhausted from the reactor, and a side outlet port by which the solid product is removed.
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