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Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof

A technology of refractory castable and lightweight foam, applied in the field of lightweight refractory castable, can solve problems such as low temperature resistance, and achieve the effects of improving production efficiency, reducing the interference of human factors, and reducing environmental pollution

Active Publication Date: 2014-10-08
RUITAI MATERIALS TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For heat insulation refractory materials, which are often used in the non-working layer of kilns, high heat insulation is required, but high temperature resistance is not very high

Method used

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  • Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof
  • Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof
  • Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Proportion used: 180 mesh recycled waste clay brick powder 67%, silica fume 15%, pure calcium aluminate cement 15%, high-strength gypsum 3%; plus: tea saponin foaming agent 0.5%, citric acid 0.5%, trimer Sodium phosphate 0.5%, third-generation water reducer 0.1%, polypropylene fiber 0.2%, water 60%. First, add the plant foaming agent to the foaming cylinder of the molding equipment, dilute it with 1:20 water, and then blow in compressed air to make foam; secondly, weigh the remaining raw materials, add the remaining water after adding the mixing cylinder Mix to form a slurry; then, press the slurry and foam into the pipeline respectively, and mix in the pipeline to form a fluid foam concrete; then, inject the foam concrete slurry into the mold, cure, demould, and dry at 110°C for 24 hours A refractory castable body is obtained. After inspection, the classification temperature of the product is ≥1200°C, and the density is 400kg / cm 3 , Compressive strength = 0.51MPa, th...

Embodiment 2

[0018] Ratio: 180 mesh calcined gangue powder 60%, silica fume 18%, pure calcium aluminate cement 20%, high-strength gypsum 2%; plus: tea saponin foaming agent 0.3%, citric acid 0.6%, trimer Sodium phosphate 0.2%, third-generation water reducer 0.1%, polypropylene fiber 0.2%, water 55%. First, add the plant foaming agent to the foaming cylinder of the molding equipment, dilute it with 1:20 water, and then blow in compressed air to make foam; secondly, weigh the remaining raw materials, add the remaining water after adding the mixing cylinder Mix into a slurry; then, press the slurry and foam into the pipeline separately, and mix in the pipeline to form a fluid foam concrete; then, inject the foam concrete slurry into the mold, cure, demould, and dry at 110°C for 4 hours , After firing, it is made into a castable green body. After inspection, the classification temperature of the product is ≥1200°C, and the density is 510kg / cm 3 , Compressive strength = 1.1MPa, thermal conduc...

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Abstract

The invention relates to a foam light-weight waste-reutilization refractory castable and a manufacturing technique thereof. The castable is prepared from 0-70% of recovered waste refractory material, 0-70% of calcined coal gangue, 10-20% of silica fume, 10-25% of calcium aluminate cement, 1-5% of high strength gypsum, 0.1-0.8% of additional protein foaming agent, 0.2-1.0% of additional citric acid, 0-0.8% of additional sodium tripolyphosphate, 0.05-0.2% of additional third-generation water reducing agent for architectural concrete, 0.1-0.8% of additional polypropylene fiber and 50-70% of additional water. The manufacturing technique comprises the following steps: proportionally adding the protein foaming agent into a foaming cylinder of a forming device, diluting with water according to the ratio of 1:20, blowing compressed air to prepare foam, proportionally weighing the rest of raw materials, adding into a stirring cylinder of the forming device, adding the rest of water, mixing to obtain a slurry, respectively pressing the slurry and foam into a pipeline, mixing in the pipeline to obtain flowable foamed concrete, injecting the concrete into a mold, curing, stripping and drying to obtain the integral light-weight refractory material. The refractory castable has the advantages of high application temperature, low heat conductivity coefficient, no powdering after long-term usage and the like, and does not generate substances which are harmful to the human health.

Description

technical field [0001] The invention relates to a lightweight refractory pouring material for high-temperature kilns, which is suitable for forming a lightweight lining body of a heat-insulating layer through on-site pouring. Firstly, the recycled refractory material or calcined coal gangue, calcium aluminate cement, alumina micropowder, silica fume and additives are used as raw materials to make slurry, which is sent to the pipeline through hydraulic pressure; secondly, the foaming agent is mixed with a certain proportion of water and then Mix with compressed air to form fine and dense foam in the pipeline; again, mix slurry and foam in the pipeline to form foam concrete; then, pour the concrete into the mold, cured, demoulded, and dried to make it capable of working as a heat insulation layer Integral refractory materials. Background technique [0002] At present, high-temperature kilns mainly use five types of heat-insulating refractory materials: alumina hollow spheres,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B38/02B09B3/00
Inventor 袁林王杰曾徐如林魏瀚周严敦胡建辉陈雪峰王俊涛
Owner RUITAI MATERIALS TECHNOLOGY CO LTD