Coal washeries make their contribution to higher coke quality

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Coke Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5522141

Litmanovich, I M; Plastovets, I Kh; Isaev, V P

The outstanding feature of the coals supplied to the Yasinovka C and CW is the wide variety of grades encountered. They come in from the Central and Western Donbas, the Pechora and Karaganda coalfields and the Kuzbas, and a high proportion consists of coals with limited caking capacity and complex petrographic constitution. Under these conditions, improvements in coke quality, and consistent performance, are highly dependent on sound coal cleaning and charge preparation techniques. The preparation of coke-oven charge, including coal cleaning stages, must satisfy a number of requirements to ensure that the blast-furnace coke properties remain high and consistent. The ash, sulfur and moisture contents and size analysis of the charge must be stabilized. Overcrushing and oxidation must be minimized. The recovery of caking components must be maximized and the size analysis of the charge must be rationalized. In particular, ashy particles exceeding 3 mm must be excluded. Further improvements in coal cleaning and charge preparation will be brought about by measures to differentiate first between the cleaning and crushing of coarse coal size fractions of differing caking capacity and secondly between the flotation conditions applied to different slurries. In order to implement these proposals, new high-efficiency equipment will be installed and the processing flowsheets and sequences will be modified. The results should be further improvements in the level and consistency of charge quality indices, leading to higher coke strength and higher production rates.

• OSTI ID: 5522141
• Journal Information: Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 8; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ASHES
ASIA
CAKING POWER
CARBONACEOUS MATERIALS
CARBONIZATION
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COAL
COAL PREPARATION
COKING
COMMINUTION
CONTROL
CRUSHING
DECOMPOSITION
EASTERN EUROPE
ELEMENTS
ENERGY SOURCES
EUROPE
FOSSIL FUELS
FUELS
MATERIALS
MIXING
MOISTURE
NONMETALS
OXIDATION
PARTICLE SIZE
PETROGRAPHY
QUALITY CONTROL
RESIDUES
SIZE
SULFUR
USSR