FIELD: paper-and-pulp industry.
SUBSTANCE: foliferous wood chips are thermally treated by way of steaming to 100-120°C, after which sodium hydroxide solution in amount corresponding to 3.5-4.0% Na2O is added to thermally treated chips and simultaneously chips are introduced to zone operated at 150-160°C, wherein chips are held for 20 min and then passed to hot-grinding apparatus to be repeatedly ground and finally subjected to double-step sorting. Method can be applied in manufacture of paper and cardboard, especially corrugated cardboard.
EFFECT: increased output of desired product and improved quality of ready-to-be-processed pulp.
1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING BLEACHED CHEMICO-THERMOMECHANICAL WOOD PULP FROM BROAD-LEAVED WOOD | 2003 |
|
RU2230845C1 |
| THERMOMECHANICAL MASS OF PEA STRAW AND METHOD OF MAKING PAPER AND CARDBOARD FROM IT | 2023 |
|
RU2817124C1 |
| METHOD OF PREPARING BLEACHED CHEMICO-THERMOMECHANICAL PULP | 1999 |
|
RU2153545C1 |
| METHOD FOR MANUFACTURE OF HIGH-YIELD FIBROUS SEMI-FINISHED PRODUCT | 2003 |
|
RU2233927C1 |
| METHOD FOR PRODUCING EXTRUSIVE THERMOMECHANICAL MASS | 2021 |
|
RU2780995C1 |
| METHOD OF WOOD PULP PRODUCTION | 2007 |
|
RU2336383C1 |
| CHEMICAL-THERMOMECHANICAL MASS PREPARATION PROCESS | 2005 |
|
RU2287034C1 |
| METHOD FOR PRODUCING FIBROUS SEMI-FINISHED PRODUCT FROM PLANT RAW MATERIALS | 2022 |
|
RU2809473C1 |
| METHOD FOR PRODUCTION OF FIBROUS SEMI-PRODUCT OF MISCANTHUS | 2019 |
|
RU2736428C1 |
| FIBER SHEETING MAINLY FOR CORRUGATING AND PACKAGING MADE OF IT | 2008 |
|
RU2355840C1 |
