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| Application of Shallowly Rectangular Air-flotation Equipment in White Water Recovery in Tissue Paper Production |
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| DOI：10.11980/j.issn.0254-508X.2013.04.007 |
| Key Words:shallowly rectangular air-flotation equipment polyaluminum chloride (PAC) polyacrylamide (PAM) reflux ratio dichloro methane extracts |
| Fund Project:本项目得到“十二五”国家科技支撑计划项目（项目编号：2011BAC11B04） |
| Author Name | Affiliation | | 宋 瑞1,2 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457；2.山东恒安纸业有限公司,山东潍坊,261206 | | 侯庆喜1，* | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 任荣旺2 | 2.山东恒安纸业有限公司,山东潍坊,261206 | | 刘 苇1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 |
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| Abstract:Single factor and orthogonal experiments were carried out to determine the influence of the reflux ratio, the dosage of polyaluminum chloride (PAC) and polyacrylamide (PAM) on air-flotation effect of a shallowly rectangular air-flotation equipment in order to overcome the unstable quality of the recycled white water. The main reason of a lot of foam producing in the air-flotation cell was also discussed. The results showed that under the condition of usual pulp furnish, the content of PAM and PAC has a significant impact on the removal rate of suspended solids and a slightly impact on the brightness of the recycled pulp; the satisfied air-flotation treatment effects can be obtained when the content of PAM, the content of PAC, and the reflux ratio reach 2.5 mg/L, 12.5 mg/L, and 10.5% ~13.5%, respectively; the higher content of dichloromethane extracts in the market pulp used may result in a great deal of foam in the flotation cell. |
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