Arrangement for the entrainment of particulate materials

Details Arrangement for the entrainment of particulate materials Arrangement for the entrainment of particulate materials

C - Chemistry, Metallurgy

01

G

23/257, 23/397

C01G 23/07 (2006.01)

Patent

CA 1188484

ABSTRACT In a process for the production of titanium dioxide by the vapour phase oxidation of the titanium tetrachloride in which process entrained inert particulate material is passed through equipment used to reduce or prevent the deposition of solids thereon, the quantity of inert particulate material en- trained may be affected by the varying back pressure normally obtaining in the equipment. The control of this quantity may be improved by reducing pressure differences by means of conduit between the inlet and outlet of a mechanical feeding device for the solids. This entails the transmission of the pressure from the conduit into the solids delivery system and this may be alleviated, optionally, by maintaining a head of solids in the system and/or by using a system of pressurised hoppers. The invention enables the quantity of inert particulate material used to be reduced.

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