Coal conversion of a multiple burner lime kiln

Conference · Wed Feb 01 04:00:00 EST 1984 · Prepr., Soc. Min. Eng. AIME; (United States)

OSTI ID:6178583

Jones, G; Thornton, L W

During 1982 Ash Grove Cement Company contracted with Wagester, Walker, Thornton and Company to convert a Calcimatic rotating hearth kiln at its Portland, Oregon lime plant from gas/oil to coal firing. Increasing costs of natural gas and No. 6 fuel oil made this conversion mandatory if the plant was to remain competitive. Unique features of this project are the distributors of pulverized coal to eighteen small burners around the inner and outer perimeters of the doughnut-shaped kiln, and the attrition-dryer-pulverizer mill. Ash Grove, a century-old lime and cement producer headquartered in Overland Park, Kansas (Kansas City area), looked at various schemes for multiple burner firing before employing Wagester, Walker, Thornton and Company. W.W.T. of Pittsburgh, Pennsylvania was formed in 1980 by acquiring the Solid Fuels Division of the Pullman Swindell Corporation. This division had been active in developing solid fuel firing for brick tunnel kilns, principally in the Southeast. They continue to supply such systems firing wood waste as well as coal to the brick industry and have also converted two Calcimatic lime kilns for Dixie Lime, Sumterville, Florida, a fluid bed calciner for Texas Gulf in Aurora, North Carolina, and a chrome concentrate kiln for Diamond Chemicals at Castle Hayne, North Carolina. Testing and a proposal have been made for INMETCO, Elwood City, Pennsylvania, on an annular hearth furnace for direct reduction of iron ore to metallic iron.

• Research Organization: Ash Grove Cement Company, Overland Park, Kansas
• OSTI ID: 6178583
• Report Number(s): CONF-840218-
• Conference Information: Journal Name: Prepr., Soc. Min. Eng. AIME; (United States) Journal Volume: 84-91
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320301* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Energy Sources
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ASH CONTENT
BUILDING MATERIALS
BURNERS
CARBONACEOUS MATERIALS
CEMENTS
COAL
COMBUSTION PROPERTIES
ENERGY SOURCES
FEDERAL REGION X
FOSSIL FUELS
FUEL ECONOMY
FUEL SUBSTITUTION
FUELS
INDUSTRIAL PLANTS
KILNS
MATERIALS
NORTH AMERICA
OREGON
PORTLAND CEMENT
RETROFITTING
USA