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Method for manufacturing superfine fiber using flyash as raw material

A technology of ultra-fine fiber and fly ash, applied in manufacturing tools, glass manufacturing equipment, etc., can solve the problems of ecological damage, huge fly ash emissions, environmental pollution, etc. value, the effect of protecting forest resources

Inactive Publication Date: 2005-02-16
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharge of fly ash is huge, if not treated and utilized, it will cause serious environmental pollution and ecological damage

Method used

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  • Method for manufacturing superfine fiber using flyash as raw material
  • Method for manufacturing superfine fiber using flyash as raw material
  • Method for manufacturing superfine fiber using flyash as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Use 100 parts of fly ash (by weight), 8 parts of limestone, 2 parts of sodium alkylate, 2 parts of zinc alkylate, and 25 parts of water to make the powder wet and cohesive, and use double-roller type granulation Machine, resulting in pellets with a particle diameter of about 3cm, and put them into a closed melting furnace at 1250°C. After complete melting, use the height difference between the melt liquid level and the spinneret to adjust the pressure difference. When the pressure reaches 0.5MPa, Open the spinneret. Spray emulsified methyl silicone oil and oleoylamino acid sodium mixed solution water mist evenly towards the ejected filament at the 3cm place of spinneret outlet, make it cool. The fibers are collected to obtain fly ash superfine fibers with a diameter of 1.2-5.5 μm and a length of 30-35 cm. Yield 95%. Its electron microscope photo see figure 1 .

Embodiment 2

[0034] Use 100 parts (weight) of fly ash, 8 parts of basalt rock, 2 parts of barium alkanoate, 2 parts of magnesium alkanoate, and mix 25 parts of water to make the powder wet and cohesive. Pellet machine to produce pellets with a particle diameter of about 4cm, and put them into a closed melting furnace at 1350°C. After complete melting, use the height difference between the melt liquid level and the spinneret to adjust the pressure difference. When the pressure reaches 0.55MPa , Open the gate and spinneret. Spray 3% polyvinyl alcohol dilute and 2% polyacrylamide mixed aqueous solution mist evenly on the ejected filament at 3 cm from the exit of the spinneret, make it cool and play the role of surface coating. The fibers are collected to obtain fly ash superfine fibers with a diameter of 3.1-4.6 μm and a length of 35-40 cm. Yield 94%. Its electron microscope photo see figure 2 .

Embodiment 3

[0036] With 100 parts of fly ash (weight), 8 parts of white rock, 2 parts of zinc alkanoate, 2 parts of calcium alkanoate calcium alkanoate, mix 25 parts of water to make the powder wet and have cohesiveness, utilize The double-roller granulator produces pellets with a particle diameter of about 5 cm, which are put into a closed melting furnace at 1400 ° C. After complete melting, the pressure difference is adjusted by using the height difference between the melt liquid level and the spinneret nozzle. When the pressure When it reaches 0.45MPa, open the gate and spin the wire. Spray evenly the mixed aqueous solution of 3% acetic acid and 1% lauryl sulfuric acid on the ejected filaments at 3 cm from the exit of the spinneret for cooling and surface treatment. The fibers are collected to obtain fly ash superfine fibers with a diameter of 1.8-4.5 μm and a length of 35-45 cm. Yield 96%. Its electron microscope photo see image 3 .

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Abstract

The invention relates to an approach using fly ash to manufacture superfine fibre. It includes nether steps: bursting industrial fly ash or coal to be solid remnant, adding compulsory auxiliary agent and water, mixing and granulation, heating up to melt in high temperature close furnace, controlling viscosity of stable fused mass, fusing and spraying to be silk from poriferous nozzle under some pressure, spraying necessary refrigerant or surface conditing agent and then getting a kind of superfine fibre. The invention adapts to industrialized production. It endows discards function of superfine fibre to extend their applied field and improve annexation value of fly ash. It has a bright prospect in paper making, heat insulation, sound insulation, heat preservation, cold insulation, insulating material, adsorbing material, decolor matter, density plate matter, road surface expanding fibre material and other fields. Especially in paper making field, fly ash superfine fibre can replace wood pulp, which can save log consumption and protect woods resource.

Description

technical field [0001] The invention relates to a method for producing ultrafine fibers by using fly ash, in particular to a process for producing fly ash ultrafine fibers by melting and spinning under high temperature and pressure. Background technique [0002] Fly ash is the ash and slag produced after burning coal or pulverized coal. Fly ash output is typically 20% of unburned coal. The main component of fly ash is SiO 2 , Al 2 o 3 , Fe 2 o 3 , CaO, MgO, TiO 2 , sulfide, etc. The discharge of fly ash is huge, if it is not treated and utilized, it will cause serious environmental pollution and ecological damage. In the past, the use of fly ash was mainly used in road construction, pit filling, soil improvement, cement and brick building materials, ceramic production, etc. The better use is to compound with polymers, as waterproof, anti-corrosion materials, coatings, etc. The value utilization is to extract rare metals, prepare hollow beads, etc. [0003] How to f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/06C03C13/00
Inventor 陈建定郑小鹏陈忠荣
Owner EAST CHINA UNIV OF SCI & TECH
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