Leslie Ed Crowder

US Patent:

7943103, May 17, 2011

Filed:

Apr 27, 2006

Appl. No.:

11/412816

Inventors:

Harry E. Flynn - Edmond OK, US
Leslie E. Crowder - Columbus MS, US

Assignee:

Tronox LLC - Oklahoma City OK

International Classification:

C01G 23/02
C01G 25/04
C01G 25/06
C01G 27/04
C22B 34/10

US Classification:

423 82, 423 83

Abstract:

A process is provided for handling waste solids produced from the chlorination of titanium-bearing ores in the presence of coke as a reducing agent. The process includes the steps of combining waste metal chloride solids and unreacted ore and coke solids with a liquid whereby waste metal chloride solids are dissolved in the liquid and unreacted ore and coke solids are slurried in the liquid, and separating out the unreacted ore and coke solids from the liquid. The liquid including the dissolved waste metal chlorides is then divided into a recycle substream and a bleed substream. The recycle substream is recycled such that it comprises at least a part of the liquid which is combined with the waste metal chloride solids and unreacted ore and coke solids in the product stream. The bleed substream is neutralized to produce a filterable or directly landfillable mass of waste metal hydroxide solids.

US Patent:

20040112216, Jun 17, 2004

Filed:

Dec 13, 2002

Appl. No.:

10/318796

Inventors:

Harry Flynn - Edmond OK, US
Joe Maker - Guthrie OK, US
Leslie Crowder - Columbus MS, US
Johnny Perkins - Hamilton MS, US

International Classification:

B01D045/12

US Classification:

095/271000, 096/372000, 055/431000, 055/459100

Abstract:

A novel air knife. The novel air knife is circumferential. That is, the novel air knife injects a gas stream along the inside walls of the air knife. The air knife can be advantageously placed at or near the entrance to a suspension vessel to reduce buildup of solid materials transported to the suspension vessel. The gas stream is injected at a rate sufficient to reduce the buildup of solid materials on the walls of the air knife (and thus at the entrance to the suspension vessel). The air circumferential air knife is particularly useful in a TiClproduction process for reducing buildup of hygroscopic cyclone dust at the entrance to a suspension vessel.