| |
 |
AB CDM Patents |
|
Assignee: AB CDM
Address: Goteborg, SE
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6063240 |
Production of paper and paper board |
May 16, 2000 |
| Paper or paper board is made by adding cationic polymeric retention aid to a cellulosic supension, shearing the suspension to degrade the resultant flocs, aggregating the suspension by adding an aqueous composition of bentonite or other anionic bridging coagulant in the presence of anion |
| 5846433 |
Dewatering of suspensions |
December 8, 1998 |
| A suspension is dosed with a coagulant and then with a flocculant and is dewatered to form a thickened sludge or cake and separated liquor, and control of the dewatering performance is improved by adding the flocculant at a predetermined dosage, monitoring the charge in the separated liq |
|
|
|
