Ronald K Riddle

US Patent:

7828548, Nov 9, 2010

Filed:

Jan 23, 2007

Appl. No.:

11/657680

Inventors:

Ronald K. Riddle - Bethlehem PA, US

Assignee:

FLSmidth A/S

International Classification:

C22B 1/00

US Classification:

432105, 432111, 432117, 266173, 75762

Abstract:

Disclosed is a process for reducing metallic oxide or sulfide materials in a rotary kiln and a rotary kiln for reducing such materials. The materials are heated in a reducing atmosphere as they travel along the axial length of the rotary kiln. The materials are discharged from the kiln at a discharge point in the kiln away from its lower material outlet end, wherein the temperature within the kiln at said discharge point is greater than the temperature at the lower material outlet end.

US Patent:

20120107758, May 3, 2012

Filed:

Nov 2, 2010

Appl. No.:

12/917512

Inventors:

Charles R. Euston - Hamburg PA, US
Ronald K. Riddle - Lehighton PA, US
Gene Basara, II - Bethlehem PA, US

Assignee:

FLSmidth A/S - Valby

International Classification:

F27B 1/24
F27D 13/00

US Classification:

432 14, 432100

Abstract:

A preheating apparatus for particulate material using hot kiln gases to preheat the particular material. The apparatus has a means to cool the hot kiln gases prior to the gases being exhausted from the preheating apparatus.

US Patent:

20120115099, May 10, 2012

Filed:

Nov 8, 2010

Appl. No.:

12/941335

Inventors:

Ronald Riddle - Lehighton PA, US

Assignee:

FLSMIDTH A/S - Valby

International Classification:

F27B 1/10

US Classification:

432159

Abstract:

A calciner includes a calciner gas distribution plate bypass mechanism. The gas distribution plate bypass mechanism is sized and configured to permit gas to enter a calciner at a temperature below a sticky point of material to be calcined and prevent or substantially reduce material buildup on the gas distribution plate. For instance, additional gas may be introduced into the calciner at a position downstream from the gas distribution plate so that additional gas may be fed into the calciner without passing through the gas distribution plate. The additional mass of gas may allow for increased capacity without elevating the temperature of the gas passing through the gas distribution plate or adjacent to the gas distribution plate and provide sufficient heat for calcining the material. A control damper may be utilized in some embodiments to ensure that certain conditions and operating parameters of the calciner are monitored and maintained.