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A simple method for preparing ferrous aluminum spinel fiber brick

A ferrous aluminum spinel and fiber brick technology, which is applied in the field of preparing ferrous aluminum spinel (FeAl2O4) fiber bricks, can solve environmental pollution, resource waste and other problems, and achieve safe operation, low total cost and huge economy The effect of benefits and social benefits

Inactive Publication Date: 2017-01-11
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of ferrous aluminum spinel fiber (brick) by traditional melting method at home and abroad, and there is no wet chemical method (mainly sol-gel method) to prepare ferrous aluminum spinel fiber (brick). ) related reports
[0003] On the other hand, with the development of my country's economy and the increase of population, the consumption of textiles has increased rapidly, and a large number of waste textiles have been buried and incinerated as garbage, which has not only caused a waste of resources, but also caused environmental pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve aluminum nitrate, ferric chloride, urea and polyvinyl alcohol (auxiliary) in distilled water to prepare a solution to control Al 3+ , Fe 3+ and urea concentrations were 0.5 mol / L, 0.25 mol / L and 1 mol / L, respectively. Among them, the amount of polyvinyl alcohol added is 1% of the mass of urea. A new cotton-containing fabric (cotton content 80wt%, polyester 15wt%, spandex 5wt%) was sewn into a brick shape, soaked in the solution for 10 minutes, removed and squeezed to remove excess water, and then Use a hairdryer to further blow out excess moisture. After drying at 50°C for 20 hours, place the soaked and dried brick-shaped cloth in a tunnel kiln, heat it to 400°C at a rate of 20°C / min, and then heat it at a rate of 0.1°C / min under a weak reducing atmosphere. Heating at a high speed to 1300°C and holding it for 6 hours for sintering; after cooling, the ferrous aluminum spinel fiber brick can be prepared.

Embodiment 2

[0022] Dissolve aluminum sulfate, ferric nitrate, urea and polyethylene glycol (auxiliary) in distilled water to prepare a solution to control Al 3+ , Fe 3+ and urea concentrations were 1.0 mol / L, 0.25 mol / L and 2.5 mol / L, respectively. Wherein, the addition amount of polyethylene glycol is 2.0% of urea mass. A new cotton-containing fabric (cotton content 85wt%, polyester 5wt%, spandex 10wt%) was sewn into a brick shape, soaked in the solution for 10 minutes, removed and squeezed to remove excess water, and then Use a hairdryer to further blow out excess moisture. After drying at 50°C for 20 hours, place the soaked and dried brick-shaped cloth in a tunnel kiln, heat it to 500°C at a speed of 30°C / min, and then heat it at a rate of 1°C / min under a weak reducing atmosphere. Heating at a high speed to 1400°C and holding for 5 hours for sintering; after cooling, ferrous aluminum spinel fiber bricks can be prepared.

Embodiment 3

[0024] Dissolve aluminum sulfate, ferric nitrate, urea and polypropylene glycol (auxiliary) in distilled water to prepare a solution to control Al 3+ , Fe 3+ and urea concentrations were 1.5 mol / L, 0.75 mol / L and 3.0 mol / L, respectively. Wherein, the addition amount of polypropylene glycol is 3% of urea mass. Sewn recycled cotton-containing cloth (cotton content 90 wt%, polyester 5 wt%, spandex 5 wt%) into a brick shape, soaked in the solution for 10 minutes, took it out and squeezed to remove excess water, and then Use a hairdryer to further blow out excess moisture. After drying at 50°C for 20 hours, put the soaked and dried brick-shaped cloth in a tunnel kiln, heat it to 600°C at a speed of 40°C / min, and then heat it at a rate of 0.7°C / min under a weak reducing atmosphere. Heating at a high speed to 1500 °C and holding it for 4 hours for sintering; after cooling, the ferrous aluminum spinel fiber brick can be prepared.

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PUM

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Abstract

The invention provides a simple method for preparing ferrous aluminum spinel (FeAl2O4) fiber bricks, belonging to the technical field of ceramic fiber material preparation. A simple method for preparing ferrous aluminum spinel fiber bricks, which is characterized in that the following steps are adopted: (1) dissolving aluminum salts, iron salts, urea, and auxiliary agents in distilled water to prepare a solution; (2) mixing cotton cloth (3) Soak the brick-shaped cloth in the above solution for 10 minutes; take it out and squeeze it to get rid of excess water, then use a hair dryer to further blow out the excess water, and dry it at 50°C (4) Put the soaked and dried brick-shaped cloth into the tunnel kiln, heat rapidly to 400-600°C, then slowly heat to 1300-1500°C under a weak reducing atmosphere and Insulate for 4‑6 hours for sintering. The invention has the advantages of simple process and equipment, low energy consumption, low cost and large-scale continuous production.

Description

technical field [0001] The invention provides a method for preparing ferrous aluminum spinel (FeAl 2 o 4 ) The simple method of fiber brick belongs to the technical field of ceramic fiber material preparation. Background technique [0002] Ferrous aluminum spinel fiber brick has the advantages of high temperature resistance, corrosion resistance, high strength, high porosity, large specific surface area, heat insulation, etc., and can be used as high temperature refractory insulation material, catalyst carrier, adsorbent of toxic substances, film support Body and chemical fillers, etc. The traditional preparation method of fiber bricks is to heat the original ingredients to a high temperature and melt them, and prepare fibers by spinning, drawing and other processes, and then use bonding, pressing, high-temperature sintering and other technologies to prepare fiber bricks. At present, there is no report on the preparation of ferrous aluminum spinel fiber (brick) by traditi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/44C04B35/622
Inventor 白佳海唐钰栋刘俊成
Owner SHANDONG UNIV OF TECH