Abstract
An examination is made of the basic factors which influence the creation of forces causing powders to adhere to solid surfaces in the presence of a temperature field. An experimental investigation has been conducted on an apatite concentrate.
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Abbreviations
- pc :
-
capillary pressure
- ρ :
-
density of fluid
- g:
-
acceleration due to gravity
- hcap, h:
-
limiting and actual height of capillary rise
- σ :
-
surface tension
- r:
-
radius of equivalent capillary
- qσ :
-
specific “suction” force
- kw :
-
water saturation coefficient
- Vw :
-
volume of water in pores
- Vpore :
-
volume of pores
- Wg:
-
humidity by weight
- R:
-
particle radius
- Θ:
-
polar angle
- ωc :
-
area of contact
- N:
-
total adhesive force
- γm, γw :
-
specific weight of powder and water
References
A. V. Luikov, Transport Phenomena in Capillary-Porous Materials [in Russian], Gostekhizdat, 1954.
M. K. Matskevich, S. V. Nerpin, and V. B. Reznikov, Proc. 3rd Conference on Surface Forces [in Russian], Izd. In-ta fizicheskoi khimii AN SSSR, 1966.
V. B. Reznikov, A. M. Globus, and I. A. Ioffe, Tr. Soyuzmornyiproekta [in Russian], no. 7, 1965.
B. A. Kin, Physical Properties of Soil [in Russian], Geotekhteorizdat, 1933.
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Matskevich, M.K. The mechanism of adhesion of moist powders to solid surfaces in the presence of a temperature field. Journal of Engineering Physics 11, 113–115 (1966). https://doi.org/10.1007/BF00831265
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DOI: https://doi.org/10.1007/BF00831265