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Preparation method for flotation waste paper compound deinking agent

A technology of deinking agent and flotation method, which is applied in processing waste paper, chemical paint/ink remover, paper making, etc. It can solve the problems of limited adsorption and collection capacity, achieve excellent adsorption and collection capacity, and improve flotation collection effect , Improve the effect of adsorption capacity

Inactive Publication Date: 2017-08-11
天长市天达纸箱纸品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ability of single kaolin as an adsorbent to adsorb and collect particulate impurities such as ink is limited and needs to be further developed

Method used

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Embodiment Construction

[0015] A preparation method of waste paper composite deinking agent by flotation method, comprising the following steps:

[0016] (1) First add 10kg of kaolin and 0.5kg of polyvinyl alcohol into 40kg of nanocrystalline cellulose aqueous solution and stir at 85°C for 1 hour, then add 3kg of butyl methacrylate, 0.03kg of benzoyl peroxide and 0.03 kgN,N-methylenebisacrylamide was stirred and reacted at 70°C for 2 hours, washed with absolute ethanol and distilled water, dried and ground evenly to obtain a composite powder;

[0017] (2) Add 10kg of the composite powder obtained in step (1), 10kg of sodium fatty alcohol polyoxyethylene ether sulfate, 5kg of sodium lignosulfonate, and 1kg of polysorbate-80 into the mixer in order and stir evenly to obtain Compound deinking agent for flotation waste paper.

[0018] The solid content of the nano-microcrystalline cellulose aqueous solution is 10%.

[0019] The molecular weight of the polyvinyl alcohol is 800.

[0020] The kaolin is 3...

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Abstract

The invention discloses a preparation method for flotation waste paper compound deinking agent. The method comprises the steps that kaolin and nanocrystal cellulose are subjected to solution blending, grafting and crosslinking are conducted by taking butyl methacrylate as a monomer, taking benzoyl peroxide as an initiator and taking N,N-methylene bisacrylamide as a cross-linking agent, a kaolin / microcrystalline cellulose / poly-n-butyl methacrylate organic-inorganic hybrid material is prepared, the kaolin / microcrystalline cellulose / poly-n-butyl methacrylate organic-inorganic hybrid material and the components such as surfactant are compounded, and then the compound deinking agent is prepared. The waste paper compound deinking agent obtained through the method has the excellent adsorption and collection capacities for particle impurities such as printing ink, the flotation and collection effects of the deinking agent are improved, and the method is suitable for a flotation deinking technology.

Description

technical field [0001] The invention relates to the technical field of waste paper deinking, in particular to a preparation method of a waste paper composite deinking agent by flotation method. Background technique [0002] Waste paper deinking is the process of separating the printing ink from the fiber through the combined action of chemicals and mechanical force, so as to recycle the pulp. The flotation method is the main method of deinking and pulping at present, and its principle is to achieve the purpose of separation through the different surface properties of different particles. Among them, the choice of deinking agent is an important link that affects the effect of flotation deinking. The function of the deinking agent is to emulsify the ink, separate it from the fiber, and prevent it from attaching to the fiber again. The commonly used deinking agent is a compound of surfactant and inorganic medicine. However, the particle collection ability of surfactants is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D9/00C09D9/04D21C5/02C08F251/02C08F220/18C08F2/44
CPCC08F2/44C08F251/02C09D9/00C09D9/04D21C5/027C08F220/1804Y02W30/64
Inventor 陈长兵阮学良王铜根
Owner 天长市天达纸箱纸品厂
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