FIELD: paper-and-pulp industry.
SUBSTANCE: cellulose-containing material preparation method provided by invention can be used in sulfate and natron cellulose production processes. Cellulose-containing stock is subjected to alkaline treatment at heating and pressure in presence of dispersion containing anthraquinone-containing additive particles and black lye. Dispersion is prepared by jointly grinding anthraquinone-containing additive particles in black lye medium at lye-to-additive ratio (0.71-0.91):1 and process is effected until density of dispersion achieves 1.07-1.20.
EFFECT: enhanced pulping efficiency.
1 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CELLULOSE PULP PRODUCTION METHOD | 0 |
|
SU903428A1 |
| PAPER PRODUCTS FROM STRAW OF CEREALS OF NATURAL COLOUR AND THEIR FABRICATION TECHNIQUE | 2008 |
|
RU2447219C2 |
| CELLULOSE PRODUCTION PROCESS | 2005 |
|
RU2287035C1 |
| PROCESS FOR MANUFACTURE OF CELLULOSE | 1992 |
|
RU2051256C1 |
| METHOD OF PRODUCTION OF FIBROUS HALF-FINISHED PRODUCT | 2004 |
|
RU2265685C1 |
| CELLULOSE-CONTAINING MATERIAL MANUFACTURING PROCESS | 2004 |
|
RU2257437C1 |
| METHOD OF OBTAINING CELLULOSE PULP FOR CHEMICAL PROCESSING | 0 |
|
SU771224A1 |
| METHOD OF PRODUCING FIBROUS SEMI-FINISHED CELLULOSE PRODUCT | 0 |
|
SU1416577A1 |
| METHOD FOR OBTAINING CELLULOSE FOR CHEMICAL PROCESSING FROM CELLULOSE-CONTAINING RAW MATERIALS | 2020 |
|
RU2763878C1 |
| PULP PREPARATION METHOD | 1997 |
|
RU2135665C1 |
