Wood Species and Fiber From, Defibrination Density, Preheat Temperature (Pressure) and Time

The Factors affect the Pulping Effect of Double Disc Refiner

Wood Species, Fiber Morphology, Chemical Composition. The results of the research show that the high strength disc refining mechanical pulp can produce by the use of wood with low density, fast growth, high autumn material content and low extract content.
Defibrination Density. It is an important factor affecting the grinding effect, which generally controlled in the range of 20% ~ 30%. The first section is about 25% and the second section is about 20%.
Preheat Temperature (Pressure) and Time.When the preheating temperature is too high, lignin is fully softened and fiber separation occurs between the intercellular layer and secondary wall. The surface of the fiber is covered with lignin after the separation. The slurry cooled after the first refining section, and the original softened lignin hardened into a glass shell, which became a barrier to the second refining section. It is difficult to refine fibers and the power consumption is high, the whiteness of slurry is low.If the preheating temperature is too low, the lignin does not soften in time. The fibers are irregularly separated, which produce more fragments. The legth of fiber will decrease and the intensity of pulp drop off.

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Project Case

Kraft Liner Paper Making Line

Testline paper machine, also called kraft liner board machine is to produce testliner paper. With large capacity, lower energy consumption, superior quality and the most competitive price, our testliner paper making line enjoys the good command and admission of our customers. If you are interested in our products, welcome to our company, you can also consult via telephone or mail to us. Email: leizhanpapermachine@gmail.com

Corrugated Paper Making Line

Corrugated Paper Making Line needs Chain Conveyor, Drum Pulper, D Type Hydrapulper, Mid Consistency Pressure Screen, Double Disc Refiner, Inflow Pressure Screen, and so on. Paper pulp machine used to make waste paper turn to fine pulp for paper forming on the paper machine. Leizhan plays great emphasis on designing most suitable Corrugated packaging paper manufacturing solutions for corrugated packaging paper makers.

Cultural Paper Making Line

Cultural paper machine line: Firstly, Raw materials are conveyed by Chain Conveyor into Drum Pulper for pulping. Then, High Density Cleaner helps to remove heavy impurities. What’s more, we need to improve slurry beating degree by using Double Disc Refiner. Eventually, the waste paper turn into fine pulp after a series of screening and deslagging and it will be conveyed into Headbox for paper making.

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