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여과조제가 혼입된 저농도 탄산칼슘 슬러리의 여과저항에 대한 고찰
Study on the Filtration Resistances of the Dilute Calcium Carbonate Slurry Body-fed with a Filter-Aid
HWAHAK KONGHAK, March 1967, 5(1), 19-24(6), NONE
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Abstract
The vacuum filtration of the dilute calcium carbonate slurries body-fed with a filter aid of American Decalite Speedplus was experimented by a filter medium, Büchner filtering funnel covered with a kind of plain-weaved nylon cloths.
In the range of slurry concentration from 0.1 to 1.0 % by weight, the filtration constants C and the filter medium resistances R are gradually decreased and increased, respectively, with the increase of the solid calcium carbonate slurry concentrations. And the mean specific cake resistances α are maximized in the vicinity of 0.5 % CaCO3 concentration. As far as the thickness of the filter cake formed is of the magnitude below 2.0 ㎝, the R/α ratios are linearly increased from 0.2 to 0.4 with the increase of concentrations.
The body-feed ratio "γ" of the CaCO3 slurry concentration to the filter aid concentration was also discussed with α, R, R/α and C, but these terms except C are not related to γ, only the plots of log C vs. log γ were, to some extent, roughly linearized, and so these relationships will be validly discussed in the closest future.
In the range of slurry concentration from 0.1 to 1.0 % by weight, the filtration constants C and the filter medium resistances R are gradually decreased and increased, respectively, with the increase of the solid calcium carbonate slurry concentrations. And the mean specific cake resistances α are maximized in the vicinity of 0.5 % CaCO3 concentration. As far as the thickness of the filter cake formed is of the magnitude below 2.0 ㎝, the R/α ratios are linearly increased from 0.2 to 0.4 with the increase of concentrations.
The body-feed ratio "γ" of the CaCO3 slurry concentration to the filter aid concentration was also discussed with α, R, R/α and C, but these terms except C are not related to γ, only the plots of log C vs. log γ were, to some extent, roughly linearized, and so these relationships will be validly discussed in the closest future.
