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Deinking process for waste paper
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Title:
Deinking process for waste paper
Author:
LIU SHOUHUI
;
YAN CHENGMIN
;
WANG QIUYUN
;
MIAO JINXIANG
Subjects:
APPARATUS THEREFOR
;
BEER
;
BIOCHEMISTRY
;
CHEMISTRY
;
ENZYMOLOGY
;
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
;
METALLURGY
;
MICROBIOLOGY
;
MUTATION OR GENETIC ENGINEERING
;
PAPER-MAKING
;
PRODUCTION OF CELLULOSE
;
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
;
REGENERATION OF PULPING LIQUORS
;
SPIRITS
;
TEXTILES
;
VINEGAR
;
WINE
Description:
The invention belongs to the field of a papermaking technology and in particular relates to a method for deinking waste paper through the addition of alkali recovered white mud. The method comprises the following steps: firstly, water, the alkali recovered white mud, sodium hydrate, sodium silicate, a deinking agent and the waste paper are sequentially added, mixed and crushed for a period of time; secondly, the mixture is added with hydrogen peroxide and is crushed for a period of time; and finally, the mixture is subjected to floatation deinking through the prior floatation deinking system. The method adds the alkali recovered white mud in the process of crushing the waste paper, reduces the use amount of the hydrogen peroxide, the sodium hydrate and the sodium silicate in the deinking process, improves the ash content and fiber yield of pulp and reduces production cost and pollution of the alkali recovered white mud as industrial garbage for landfill.
Creation Date:
2009
Language:
Chinese;English
Source:
esp@cenet
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