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Optimizing Tissue Stock Preparation via High-Consistency Refining Systems
Gold Hongye Paper Group has deployed high-consistency refining systems from ANDRITZ to optimize fiber utilization across its production mills.
www.andritz.com
Gold Hongye Paper Group Co and plant engineering group ANDRITZ have commissioned two high-consistency refining installations to enhance tissue stock preparation. The systems were deployed at the producer's manufacturing sites in Rudong, Jiangsu province, and Xiaogan, Hubei province, China.
Technical Challenge and Industrial Objectives
Tissue manufacturing requires balancing fiber furnish costs with final sheet strength and softness. Conventional stock preparation typically relies on low-consistency refining, a mechanical process prone to fiber cutting and generating fines. Excessive cutting degrades short-fiber integrity, demanding higher proportions of expensive long-fiber chemical pulp to maintain target tensile strength across paper machine runs.
System Architecture and Process Functionality
Each installed refining line comprises an ANDRITZ dewatering screw press upstream of a high-consistency refiner. The mechanical sequence functions through distinct stages:
- Dewatering: The pulp slurry is dewatered via the screw press to achieve high-consistency conditions prior to the mechanical treatment zone.
- Fiber-to-Fiber Refining: Operating at high consistency shifts the mechanical forces from direct bar-to-fiber impacts to internal fiber-to-fiber friction.
- Fibrillation Control: This friction-dominant mechanism promotes fiber curling and external fibrillation while limiting cutting actions.
- Fines Reduction: Lowering the production of non-structural fines allows short fibers—such as hardwood, bamboo, bagasse, or reed—to contribute directly to network bonding and tensile development.
Deployment and Operational Impact
The installations integrate directly into existing continuous stock preparation lines at both the Rudong and Xiaogan facilities. Gold Hongye Paper Group Co., Ltd., the tissue production unit of APP China, utilizes an integrated forestry–pulp–paper operational model across 12 domestic manufacturing plants. Integrating the high-consistency mechanical refiners allows the facilities to treat alternative furnish sources, including non-wood and short-fiber pulps.
Operational parameters demonstrate that reducing mechanical cutting preserves sheet strength, allowing operators to lower long-fiber pulp ratios in the total furnish without compromising product specifications. The technical approach stabilizes the paper web forming process, maintains target physical properties, and optimizes the raw material composition within industrial papermaking operations.
Edited by Evgeny Churilov, Induportals Media - Adapted by AI.
www.andritz.com
The installations integrate directly into existing continuous stock preparation lines at both the Rudong and Xiaogan facilities. Gold Hongye Paper Group Co., Ltd., the tissue production unit of APP China, utilizes an integrated forestry–pulp–paper operational model across 12 domestic manufacturing plants. Integrating the high-consistency mechanical refiners allows the facilities to treat alternative furnish sources, including non-wood and short-fiber pulps.
Operational parameters demonstrate that reducing mechanical cutting preserves sheet strength, allowing operators to lower long-fiber pulp ratios in the total furnish without compromising product specifications. The technical approach stabilizes the paper web forming process, maintains target physical properties, and optimizes the raw material composition within industrial papermaking operations.
Edited by Evgeny Churilov, Induportals Media - Adapted by AI.
www.andritz.com
