Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)
- Volume 32 Issue 3
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- Pages.1-9
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- 2000
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- 0253-3200(pISSN)
The Evaluation of Drainage Characteristics Using a New Drainage Tester
새로운 탈수측정 설비를 이용한 탈수 특성 평가
Abstract
The MDDA (Modified Dynamic Drainage Analyzer) was developed to evaluate the drainage characteristics on paper machine. The initial forming vacuum velocity was decreased with the increase of stock consistency and there were no significant effects of the applied vac-uum. On the other hand the initial forming drainage velocity was rapidly decreased with the increase of stock consistency above the 0.35 bar of applied vacuum. The final drainage time and wet web permeability showed similar trends under 0.075% consistency but increased rapidly at the higher consistencies. SFR(Specific Filtration Resistance) and drainage obtained for different vacuum level applied and deposited weights measured by using MDDA showed the linear relationship.
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