seeKSpace >
环境与生态科学开放知识资源 >
网络开放学术资源 >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2239/34890
|
| Title: | Dynamic drainage of froth with wood fibers. |
| Authors: | Zhu, J.Y.
Tan, F.
USDA, FS |
| Keywords: | dynamic drainage
froth drainage
flotation deinking
wood fibers
foams
processing technology
water
waste paper
recycling
pulp and paper technology |
| Issue Date: | 17-Oct-2007 |
| Description: | Understanding froth drainage with fibers (or simply called fiber drainage in froth) is important for improving fiber yield in the flotation deinking operation. In this study, the data of water and fiber mass in foams collected at different froth heights were used to reconstruct the time-dependent and spatially resolved froth density and fiber volumetric concentration in the froth. The results revealed that fiber drainage is caused by water carryover. However, fiber drainage stopped in the upper part of the froth and at longer draining time because of decreased draining water flux, as indicated by a critical water flux of about 5 mg s-1 cm-2. As a result, some fibers were permanently trapped in the froth and were unrecoverable. These findings indicate that only the upper part of a froth should be removed in flotation deinking operations to reduce fiber yield loss. |
| URI: | http://seekspace.resip.ac.cn/handle/2239/34890 |
| Other Identifiers: | http://seekspace.resip.ac.cn/handle/10113/140 |
| Appears in Collections: | 网络开放学术资源
|
Files in This Item:
There are no files associated with this item.
|
All items in DSpace are protected by copyright, with all rights reserved.
|
