Improving the scheme for final comminution of the coal charge

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Coke Chem. USSR (Engl. Transl.); (United States)

OSTI ID:7153486

Antonov, A V; Kress, L A; Stepura, P G; Vorob'ev, S E; Zayoruiko, S I

Proceeding from laboratory and pilot plant tests of the screening of fine classes of coal under the effect of gravitational forces on stationary grates, and also from the experience of the Krivoi Rog and Kommunarsk Coke Works (1,2), the coal preparation division of OKhMK (Orsk-Khalilovo Integrated Iron and Steel Works) adopted an industrial scheme of comminution of coal before coking, screening out the fine classes ahead of the hammer crushers. In the bottom of the feeder chute a stamped screen was installed (dimensions 2100 X 1600 X 5 mm with apertures of 40 X 100 mm) with the large side perpendicular to the flow of coal. The distance between the apertures on the small side of the screen was 20 mm, on the large side 15 mm; the inclination was 60/sup 0/. The overscreen product enters the crusher, and the underscreen product is injected into the crushed charge without comminution. The improvement in the uniformity of the granulometric and qualitative composition of the prepared charge resulted in an improvement in the physicomechanical properties of the blast furnace coke. The mechanical strength of the coke by the M/sub 25/ index rose from 86.4 to 86.6%, while the abradability by the M/sub 10/ index decreased from 7.5 to 7.3%.

• Research Organization: OKhMK
• OSTI ID: 7153486
• Journal Information: Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 4; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
APERTURES
BLAST FURNACES
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL REACTIONS
COAL
COAL FINES
COAL PREPARATION
COKE
COKING
COMMINUTION
CONTROL
DECOMPOSITION
DIMENSIONS
ENERGY SOURCES
FILTRATION
FOSSIL FUELS
FUELS
FURNACES
GRANULAR MATERIALS
GRAVITATION
INCLINATION
MATERIALS
MECHANICAL PROPERTIES
OPENINGS
OPTIMIZATION
PARTICLE SIZE
PHYSICAL PROPERTIES
PROCESS CONTROL
SCREENS
SEPARATION PROCESSES
SIZE
SORTING