Claims
- 1. A method for removing wax from a pulp furnish, comprising:
adding an agglomeration chemical to a pulp furnish comprising fibers and wax, wherein the agglomeration chemicals separate wax from the fibers to provide a resulting furnish comprising wax particles and fibers substantially free from wax; and screening and cleaning the resulting furnish to separate the wax particles to provide a pulp furnish substantially free from wax.
- 2. The method of claim 1 wherein the pulp furnish comprising fibers and wax has a wax content of about 3 percent by weight based on the total weight of fibers.
- 3. The method of claim 1 wherein the pulp furnish substantially free from wax is suitable for a papermaking machine.
- 4. The method of claim 1 wherein pulp furnish substantially free from wax has a wax content less than about 0.5 percent by weight based on the total weight of fibers.
- 5. The method of claim 1 wherein the agglomeration chemical is added to the pulp furnish prior to or during pulping.
- 6. The method of claim 1 wherein the agglomeration chemical is added to the pulp furnish after pulping.
- 7. The method of claim 1 wherein the agglomeration chemical is selected from the group consisting of sodium sulfate, potassium sulfate, lauryl sulfate, sodium silicate, sodium metasilicate, d-limonene, propylene carbonate, and mixtures thereof.
- 8. The method of claim 1 wherein the agglomeration chemical is sodium sulfate.
- 9. The method of claim 1 wherein the agglomeration chemical is d-limonene.
- 10. The method of claim 1 wherein the agglomeration chemical is a combination of sodium metasilicate and d-limonene.
- 11. A method for removing wax from a pulp furnish, comprising:
adding an agglomeration chemical to a pulp furnish comprising a caustic material, fibers and wax, wherein the agglomeration chemicals separate wax from the fibers to provide a resulting furnish comprising wax particles and fibers substantially free from wax; and screening and cleaning the resulting furnish to separate the wax particles to provide a pulp furnish substantially free from wax.
- 12. The method of claim 11 wherein the caustic material comprises sodium hydroxide.
- 13. The method of claim 11 wherein the pulp furnish comprising fibers and wax has a wax content of about 3 percent by weight based on the total weight of fibers.
- 14. The method of claim 11 wherein the pulp furnish substantially free from wax is suitable for a papermaking machine.
- 15. The method of claim 11 wherein pulp furnish substantially free from wax has a wax content less than about 0.5 percent by weight based on the total weight of fibers.
- 16. The method of claim 11 wherein the agglomeration chemical is added to the pulp furnish prior to or during pulping.
- 17. The method of claim 11 wherein the agglomeration chemical is added to the pulp furnish after pulping.
- 18. The method of claim 11 wherein the agglomeration chemical is selected from the group consisting of sodium sulfate, potassium sulfate, lauryl sulfate, sodium silicate, sodium metasilicate, d-limonene, propylene carbonate, and mixtures thereof.
- 19. The method of claim 11 wherein the agglomeration chemical is sodium sulfate.
- 20. The method of claim 11 wherein the agglomeration chemical is d-limonene.
- 21. The method of claim 11 wherein the agglomeration chemical is a combination of sodium metasilicate and d-limonene.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of copending international patent application Serial No. PCT/US99/03914, filed Feb. 23, 1999, which is a continuation-in-part of U.S. provisional patent application Serial No. 60/075,808, filed Feb. 24, 1998, the benefit of the priority of the filing dates of which is hereby claimed under 35 U.S.C. §§ 120 and 119, respectively. Each of these prior applications is incorporated herein by reference in its entirety.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60075808 |
Feb 1998 |
US |
Continuations (2)
|
Number |
Date |
Country |
Parent |
09637446 |
Aug 2000 |
US |
Child |
10076871 |
Feb 2002 |
US |
Parent |
PCT/US99/03914 |
Feb 1999 |
US |
Child |
09637446 |
Aug 2000 |
US |