Consistency of pulp
WebNov 1, 2024 · Refining of high-consistency pulp on a set w ith a curved shape o f knives at a consistency of 10% revealed the best result of physical and mechanical … Web6.1 Obtain the consistency of the pulp to be hot disintegrated, according to TAPPI T 240 “Consistency (Concentration) of Pulp Suspensions.” 6.1.1 If the pulp is under 10% consistency and the temperature after dilution can be maintained at 90 to 95°C there is no need to thicken the pulp. If the pulp is under 10% consistency and the required ...
Consistency of pulp
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WebThe original pulp freeness measurement, as measured by either the Canadian Standard Freeness test (CSF) or the Schopper-Riegler test (SR), is to a great extent a measure of … WebJun 5, 2013 · Performed tests showed that, despite keeping the SEL and SEC at constant level, changes of pulp refiner consistency always modified the character of the refining process. Obtained results...
Webthe consistency and the type of pulp tested Pulp suspension can only flow once this shear stress is exceeded in the suspension Once the suspension starts to flow, the flow can be in the form of flocs slipping past flocs, or individual fibres slipping past one another The shear stress required to get pulp suspension to flow is generally higher WebConsistency is one of the most important pulp & paper variables. It affects pulp mill washing & screening efficiency, and bleaching reactions. In the paper mill it affects …
WebConsistency control is one of the most important and yet common controls in the wet end of a paper machine. Nevertheless, it is at the same time one of the most poorly implemented loops on many paper machines. In this presentation, the several different process objectives with appropriate control strategies will be considered. WebSoak the pulp at least 4 hr., or in the case of flash-dried mechanical pulp at least 24 hr. NOTE 6: As far as is known, soaking any pulp for periods longer than specified does not appreciably affect the result. 7.1 Disintegration. 7.1.1 Dilute the specimen to 2000 mL (1.2% consistency) with distilled or deionized water at 20 ± 2°C.
WebThe principal objectives of pulp refining are to: Increase the flexibility of the cell wall to promote increased contact area Fibrillate the external surface of the fiber and generate fines This further promotes the formation of hydrogen bonds and increases the total surface area available for bonding.
WebMar 1, 1982 · PDF For a given production rate and pipe diameter, a consistency exits for pumping pulp that minimizes power requirements Find, read and cite all the research you need on ResearchGate first watch downtown sarasotaWebThe end kappa number for 15% pulp consistency after 3 steps washing was 54.3, which was even greater than the value of 53.4 for 35% pulp consistency with only first-step washing. This suggested that one could obtain a better effect using the pulp consistency of 35% after first-step washing than the pulp consistency of 15% after 3 steps washing. first watch duluth gahttp://grayhall.co.uk/BeloitResearch/tappi/t240.pdf first watch downtown tampaWebJul 18, 2005 · One source is TAPPI, the Technical Association of the Pulp and Paper Industry. (tappi.org) I know I have seen books with head loss vs. consistancy in the (distant) past and I believe that at least some of them were published by TAPPI. ... Worthington etc etc, are capable,under ideal suction conditions of pumping stock upto and including 6% ... first watch e gift cardWebfor the reaction vessel. The proper consistency should be determined by making a preliminary specific surface determination by the procedure outlined below. It is desirable to have the volume of the pulp suspension about 2000 mL at this point, adjusting the concentration by adding more water or moist pulp. Table 1 may be used as a guide in first watch east sunshine springfield moWebpulp obtained from the original wood weight. A recovery value of 45% means that for every 100 oven-dry pounds of wood processed, 45 oven-dry pounds of pulp is produced. When expressed in this manner, pulp yield is mainly a function of the pulp-ing process. There is some difference between hard-woods and softwoods when pulped by chemical first watch elevated egg sandwichfirst watch eggs benedict