General principals concerning the filtration of coal suspensions

Journal Article · Sun Jan 01 04:00:00 UTC 1984 · Coke Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5068992

Bruk, O L

In the coal industry, the aqueous suspensions of untreated coals, anthracite and shale slimes, as well as those of the products of treating them, are separated in filters functioning under pressure and a vacuum. They are also separated in filtering centrifuges. The properties of the coal suspension here vary over wide ranges: the concentration of the solid phase varies from 500 kg/m/sup 3/ (for flotation concentrates) to 50 kg/m/sup 3/ (for the flotation wastes); the ash content of the solid phases varies from 5 (for concentrates) to 90 (for treatment wastes) %; the density varies from 1300 to 2500 kg/m/sup 3/, respectively; the <0.05 mm particle content varies from 20 to 90% and the >0.5 mm content varies from 5 to 50%; the average diameter of the particles varies from 0.02 to 4 mm; the porosity of the deposit varies from 0.2 to 0.6. The polydispersity of the coal particles is also changed over wide ranges. Predicting the productivity of filtration equipment and predicting other filtration indicators using the structural-granulometric properties of the solid phase cannot be considered reliable. Predictions are reliable when based on the experimentally determined criterium of the permeability of the filtration environment at a given pressure differential. Using the graph presented in this paper as a guide, it is possible to select the filtering equipment necessary for separating coal suspensions.

• Research Organization: Basic Technical Requirements Institute
• OSTI ID: 5068992
• Journal Information: Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 7; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
&amp; Peat-- Transport
Handling
&amp; Storage
ASH CONTENT
BULK DENSITY
CARBONACEOUS MATERIALS
CENTRIFUGATION
COAL
COAL PREPARATION
DENSITY
DISPERSIONS
DISTRIBUTION
ENERGY SOURCES
EQUIPMENT
FILTERS
FILTRATION
FLOTATION
FOSSIL FUELS
FUELS
INERTIAL SEPARATORS
MATERIALS
MINERAL WASTES
PARTICLE SIZE
PHYSICAL PROPERTIES
POLLUTION CONTROL EQUIPMENT
PRODUCTIVITY
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SIZE
SOLID WASTES
SUSPENSIONS
WASTES