| Category | Pulping process | Chemical treatment | Mechanical treatment | pulp yield% |
| Mechanical | Ground wood | No treatment(sometimes steam treatment) | Grinder Defibrator | 93-98 |
| Semi-chemical | Ground wood and steamed ground wood with acid sulphite,bisulphite | none | Grinder,refiner or hydropupler | 60-98 |
| Chemical Process | Kraft(sulphate) Soda Acid sulphite Bisulphate-acid sulphite | Kraft Alkali Acid sulphite Bisulphate | None None None | 40-55 40-55 40-60 |
Sunday, November 14, 2010
Comparative Analysis of Different Pulping Processes
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