Red sludge superfine fibre pulp from solid wastes and manufacturing method thereof

A technology of ultra-fine fiber and solid waste, applied in non-fiber pulp addition, fiber raw material processing, inorganic fiber/sheet, etc., to achieve the effect of easy recycling and processing, reducing white pollution, and good circular economy significance

Inactive Publication Date: 2009-08-26
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no literature report on how to use red mud ultrafine fibers to prepare pulp, so the research and development of this topic will be of great significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take 20 parts (by weight, the same as described below) of red mud superfine fibers with an average diameter of 4 μm and a length of 5 to 50 mm after removing the slag, put them into 400 parts of water, add 3% (weight content, The same as described below) 3 parts of acetic acid aqueous solution, 0.3 part of dodecylsulfonic acid, after stirring for 15 minutes at a speed of 60 rpm, 16 parts of 3% polyvinyl acetal aqueous solution, 3% polyethylene glycol aqueous solution 2 parts, stirred at the same speed for 15 minutes; continued to add 0.3 parts of N,N-dimethylacetamide, 0.2 parts of propylene glycol, and kept stirring at the same speed for 15 minutes; then, added 80 parts of coniferous papermaking fibers as dry fibers, and Stir at high speed for 30 minutes; then, add 20 parts of 3% polyvinyl alcohol aqueous solution and 20 parts of 3% cationic starch aqueous solution, and stir at the same speed for 40 minutes; finally, the slurry flows through a mesh screen, and about 180...

Embodiment 2

[0047] Get 40 parts (by weight, the same as described below) of dry red mud superfine fibers with an average diameter of 4 μm and a length of 5 to 50 mm after removing the slag, drop into 800 parts of water, add 3% (weight content) after wetting. , the same as described later) 3 parts of oxalic acid aqueous solution, 0.3 part of citric acid, after stirring at a speed of 60 rpm for 20 minutes, then add 12 parts of 3% polyvinyl formal aqueous solution and 10 parts of 3% polyethylene oxide aqueous solution, Stir at the same speed for 20 minutes; continue to add 1 part of ammonium lauryl sulfate and 0.8 part of glycerin, and keep stirring at the same speed for 10 minutes; then, add 60 parts of straw papermaking fiber as dry fiber, and stir at the same speed for 30 minutes; Then add 50 parts of 3% carboxymethyl cellulose aqueous solution and 30 parts of 3% cationic polyacrylamide aqueous solution, and stir at the same speed for 30 minutes; finally, the slurry flows through a mesh sc...

Embodiment 3

[0051] Take 80 parts (by weight, the same as described below) of dry red mud superfine fibers with an average diameter of 4 μm and a length of 5 to 50 mm after removing the slag, drop into 1600 parts of water, add 3% (weight content) after wetting , the same as described below) 20 parts of p-toluenesulfonic acid aqueous solution, 1 part of sulfosalicylic acid, after stirring for 10 minutes at a speed of 60 rpm, add 80 parts of 3% polyethylene oxide aqueous solution, and stir for 20 minutes at the same speed , continue to add 3 parts of N,N-dimethylformamide, 1 part of dipropylene glycol, and keep stirring at the same speed for 10 minutes; then, add 20 parts of sugarcane papermaking fiber as dry fiber, and stir at the same speed for 30 minutes; then add 3% 100 parts of carboxymethyl cellulose aqueous solution and 100 parts of 3% cationic starch aqueous solution were stirred for 30 minutes at the same speed; finally, the slurry flowed through a mesh sieve, and about 1820 parts of...

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Abstract

A method for manufacturing red sludge superfine fibre pulp from solid wastes comprises the following steps: feeding the red sludge superfine fibres into the water, sequentially adding the following additives: adding fibre surface modifier, mixing and stirring the mixture for 10-20 minutes, adding fibre dispersant, mixing and stirring for 10-20 minutes, adding fibre miscible agent, mixing and stirring for 10-20 minutes, adding plant fibre slurry, mixing and stirring the mixture for 20-30 minutes, adding fibre intensifier, mixing and stirring the mixture for 30-40 minutes; and removing partial water to obtain the red sludge superfine fibre pulp. In the inventive manufacturing method, all the processes are carried out at the normal temperature with low industrial production cost. The invention endows the red sludge superfine fibre pulp from solid wastes with highly valuable usage, and the prepared pulp is capable of producing fine paper, package paper, functional paper and paper apparatus and appliances. The project is significant in meaning and value for the recycle and reuse of resources.

Description

technical field [0001] The present invention relates to a kind of pulp using solid waste fibers, in particular to a method for making pulp using superfine fibers prepared from red mud, the residue of industrial production of alumina, as a raw material, and a special pulp preparation method suitable for various paper products . Background technique [0002] Red mud, one of the industrial solid wastes, is the residue of aluminum powder or aluminum hydroxide in industrial production. It has been determined that it contains strongly alkaline components. The content of caustic soda-based alkaline components is greater than 10%. Ti, K and The oxide component of Fe element is up to 15%, and the remaining components are similar to silicate minerals. The soil environment with such highly alkaline mixtures as the base soil is not suitable for plant growth and microbial growth. Long-term stacking wastes land and causes ecological deterioration, and pollutes water sources and the envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/38D21H17/14D21H17/47D21H17/07D21H17/06D21H17/36D21H17/55D21H17/25D21H17/29D21H17/32
Inventor 陈建定王彦华
Owner EAST CHINA UNIV OF SCI & TECH
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