Characterization of freeze-dried pulp fibre suspensions using x-ray computed tomography and image analysis

被引：0

作者：

Hansson, MT ^{[1
]}

Rasmuson, A ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Chem Engn Environ Sci, SE-41296 Gothenburg, Sweden

来源：

JOURNAL OF PULP AND PAPER SCIENCE | 2004年 / 30卷 / 07期

关键词：

image analysis; pulps; softwoods; hardwoods; freeze drying; X ray analysis; flocs; dimensions;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A technique for characterizing pulp suspensions by using freeze drying and X-ray-computed tomography has been developed. The raw data from the tomography has been processed into images that show local densities and concentrations. These images then have been subjected to two image analysis tools, which give spatial information, such as floc size. Floe size was found to increase with concentration in softwood pulp but not in hardwood pulp. Individual flocs were identified and these were found to be non-spherical with internal concentration variations. The freeze drying of the fibre suspension gave significantly improved contrast compared to earlier work.

引用

页码：177 / 182

页数：6

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