Hunan Yueyang Forest and Paper Share Co.

Hunan, China

Hunan Yueyang Forest and Paper Share Co.

Hunan, China
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Zhao N.-Z.,Hunan Yueyang Forest and Paper Share Co. | Liu C.-L.,Hunan Yueyang Forest and Paper Share Co. | Tan X.-Y.,Hunan Yueyang Forest and Paper Share Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2012

The technology and cost of DIP bleaching with FAS were optimized, the best bleaching result was obtained when the ratio of NaOH/FAS was 0.5. Brightness of pulp increased constantly with FAS dosage increasing when FAS amount was less than 0.75%. In order to deliver higher brightness pulp, the temperature of the pulp in storage tank ought to be 70°C if the pulp level was low; otherwise the temperature of the pulp ought to be 60°C if the pulp level was in middle or high. The same brightness and bleaching cost could be obtained when FAS dosage decreased 0.065% if temperature of the pulp increased 5°C.


Liu C.-L.,Hunan Yueyang Forest and Paper Share Co. | Liu S.-G.,Hunan Yueyang Forest and Paper Share Co. | Zhao N.-Z.,Hunan Yueyang Forest and Paper Share Co. | Liu C.-J.,Hunan Yueyang Forest and Paper Share Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2012

The ash content and fiber components of the waste papers from different sources were compared in the laboratory, the optical properties, ink contents, physical strength properties and pulping yields of the de-inked pulps from the waste papers were studied. The investigation results showed that the waste paper of wood-free grade with high brightness has the lowest ERIC content, fewer dirt, and relatively higher strength, which satisfy the production requirement for fine paper with 85% ISO brightness. Whereas the waste paper of wood-containing grade has higher pulping yield, lower pulping cost, but its low brightness and high dirt properties were unable to meet the production requirements of fine paper when using at a high proportion.

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