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Rice-husk-based micropore light fireproof material and preparing method thereof

A light-weight refractory material and rice husk technology, applied in the field of light-weight refractory materials, can solve the problems of poor environmental protection and complicated process, and achieve the effect of high porosity, simple process and small pore size

Active Publication Date: 2017-01-11
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rice husk-based microporous lightweight refractory material, so as to solve the problems of complex process and poor environmental protection existing in the existing lightweight silica brick preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The rice husk-based microporous lightweight refractory material of this embodiment is made of rice husk, a mixture and a liquid binder, and the mixture is composed of the following raw materials in weight percentage: silica powder 36%, CaCO 3 19%, Fe 2 o 3 6%, dextrin powder 34%, polypropylene fiber 5%; silica powder, CaCO 3 , Fe 2 o 3 , dextrin powder, and polypropylene fiber were mixed in a mixer for 60 minutes to obtain the mixture;

[0034] The mass of the mixture is 46% of the mass of the rice husk; the liquid binder is sulfurous acid pulp waste liquid, and the added amount is 65% of the mass of the rice husk.

[0035] The preparation method of the rice husk-based microporous lightweight refractory material of this embodiment adopts the following steps:

[0036] 1) Add rice husks to the mixer, then add the mixture, and stir for 20 minutes; then add sulfurous acid pulp waste liquid, and stir for 10 minutes to make a billet;

[0037] 2) The blank was machine-pr...

Embodiment 2

[0039] The rice husk-based microporous lightweight refractory material of this embodiment is made of rice husk, a mixture and a liquid binder. 3 14%, FeCl 2 3%, gum arabic 21%, xanthan gum 22%, polyethylene fiber 12%; silica powder, silicon powder, CaCO 3 , FeCl 2 , gum arabic, xanthan gum, and polyethylene fibers were mixed in a mixer for 60 minutes to obtain the mixture;

[0040] The mass of the mixture is 37% of the mass of the rice husk; the liquid binder is sulfurous acid pulp waste liquid, and the added amount is 75% of the mass of the rice husk.

[0041] The preparation method of the rice husk-based microporous lightweight refractory material of this embodiment adopts the following steps:

[0042] 1) Add rice husk powder to the mixer, then add the mixture, and stir for 20 minutes; then add sulfurous acid pulp waste liquid, and stir for 10 minutes to make a billet;

[0043] 2) The blank was machine-pressed under a pressure of 1 MPa to obtain a green body; the green...

Embodiment 3

[0045] The rice husk-based microporous lightweight refractory material of this embodiment is made of rice husk, a mixture and a liquid binder. 5%, MnO 2 1%, Fe 2 o 3 2%, gum arabic 20%, xanthan gum 30%, polyethylene fiber 12%; silica powder, silicon powder, CaO, Fe 2 o 3 , gum arabic, xanthan gum, and polyethylene fibers were mixed in a mixer for 60 minutes to obtain the mixture;

[0046] The mass of the mixture is 25% of the mass of the rice husk; the liquid binder is sulfurous acid pulp waste liquid, and the added amount is 75% of the mass of the rice husk.

[0047] The preparation method of the rice husk-based microporous lightweight refractory material of this embodiment adopts the following steps:

[0048] 1) Add rice husk powder to the mixer, then add the mixture, and stir for 20 minutes; then add sulfurous acid pulp waste liquid, and stir for 10 minutes to make a billet;

[0049] 2) Machine press the billet under 0.8 MPa to obtain a green body; dry the green bod...

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Abstract

The invention discloses a rice-husk-based micropore light fireproof material and a preparing method thereof. The fireproof material is prepared from rice husks, a mixture and a liquid binding agent, wherein the mixture is prepared from, by weight, 5%-40% silicone powder and / or Cab-O-sil, 3%-35% mineralizer, 30%-75% reinforcing agent and 1%-15% reinforcing fiber; the liquid binding agent is sulphite cellulose waste liquor and / or SiO2 sol; mass of the mixture is 15%-50% of mass of the rice husks. Agricultural residue rice husk serves as main raw material of the rice-husk-based micropore light fireproof material, and is mixed with the mixture and the liquid binding agent to prepare a semi-finished product after formation, drying and calcination, drying and , and the fireproof material is prepared after formation, drying and calcination; the source of the raw material which are used has wide source, low cost and simple preparation technology, and is green and environment-friendly; the prepared product has the advantages of low volume density, high porosity, small hole diameter of pore, good heat insulation effect and high mechanical strength, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the field of lightweight refractory materials, and in particular relates to a rice husk-based microporous lightweight refractory material and a preparation method thereof. Background technique [0002] Lightweight silica bricks have the advantages of small bulk density, good heat insulation effect, high load softening temperature, strong resistance to acid atmosphere and slag erosion, and are widely used as energy-saving insulation materials for coke ovens, hot blast stoves, glass tank kilns and other high-temperature The insulation layer or inner lining of industrial kilns can reduce heat loss, improve kiln working efficiency, reduce furnace weight, and simplify furnace structure. [0003] At present, the preparation of lightweight silica bricks at home and abroad mostly adopts the method of adding pore-forming agents or foaming methods. The former is to add a certain amount of combustibles such as coke, sawdust or polymer lig...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/14C04B35/66C04B35/636C04B35/80C04B35/634
CPCC04B35/14C04B35/62204C04B35/62213C04B35/634C04B35/636C04B35/66C04B35/803C04B38/0675C04B2235/3201C04B2235/3208C04B2235/3267C04B2235/3272C04B2235/445C04B2235/48C04B2235/5436C04B2235/77C04B2235/96C04B2235/9607C04B38/0067C04B38/0074
Inventor 李文凤郭会师韩平叶方保侯永改
Owner HENAN UNIVERSITY OF TECHNOLOGY