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국산규조토여과조제가 Cake Filtration의 특성에 미치는 영향

Effects of Domestic Diatomite Filter Aid on the Characteristics of Cake Filtration

윤석호 나종복 조원선

Yoon SH Nah JB Cho WS

HWAHAK KONGHAK, August 1989, 27(4), 482-488(7), NONE

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Abstract

국산규조토여과조제를 사용하여 cake filtration에서 filter cake의 공극률과 국소여과비저항이 filter cake에 가해지는 압력에 따라 변화하는 특성을 filter cell에서 실험적으로 고찰하였다.
실험에 사용된 시료는 탄산칼슘, Talc(I) 및 Talc(II) 슬러리와 규조토여과조제였으며 여과조제는 body feeding 및 precoating하여 사용하였다.
실험결과 압력이 증가함에 따라 filter cake의 공극률은 감소하였고 국소여과비저항은 증가하였다. 여과조제를 첨가하면 filter cake의 공극률이 증가되어 국소여과비저항을 줄일 수 있다.

Variations of porosity and specific local filtration resistance in cake filtration were studied in a filter cell. samples used were slurries of CaCO₃, Talc(I) and Talc(II) and diatomite filter aids, which were used by body feed-ing and precoation. From the experimental result, the porosity of filter cake decreased and the specific local filtration resistance in-creased with increasing pressure. The addition of filteraids increased the porosity of filter cake and it resulted in de-creasing the specific local filtration resistance.

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