CN104086196A - Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof - Google Patents
Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof Download PDFInfo
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- CN104086196A CN104086196A CN201410338590.9A CN201410338590A CN104086196A CN 104086196 A CN104086196 A CN 104086196A CN 201410338590 A CN201410338590 A CN 201410338590A CN 104086196 A CN104086196 A CN 104086196A
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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
The present invention is a kind of Lowweight Refractory Castable for high temperature kiln, is applicable to forming by cast in situs the lightweight lining body of thermofin.First, take and reclaim refractory materials or calcining coal gangue, aluminous cement, alumina powder, silicon ash and admixture are made slip as raw material, by hydraulic pressure, deliver to pipeline; Secondly, whipping agent mixes and mixes with pressurized air with a certain proportion of water, forms fine and closely woven foam in pipeline; Again, mixed slurry and formation of foam foamed concrete in pipeline; Then, use concrete is injected to mould, through maintenance, the demoulding, the dry globality refractory materials that can be competent at thermofin work of making.
Background technology
At present, high temperature kiln is mainly used alumina hollow ball, lightweight high alumina, soft clay, refractory fibre product plate and the large class insulating refractory of Calucium Silicate powder five.Wherein, heat insulation best material is refractory fibre product and Calucium Silicate powder refractory product.But these dynamical lagging material effects are unstable.Be subject to after high temperature long term, fiber can go bad, efflorescence.After fiber efflorescence, not only cause goods to lose heat insulating function, and cause serious environmental issue.Because efflorescence thing sucks rear harmful HUMAN HEALTH, European Union has classified aluminosilicate refractory fiber as the material that Equations of The Second Kind may be carcinogenic.As for calcium silicate products, its primary structure unit is small hard calcium silica fiber, and secondary structure unit is the chestnut shelly spheroid that fibril aggregation forms.Because the fusing point of hard wollastonite is very low, the short-term maximum operation (service) temperature of calcium silicate products is 1000 ℃, and long-term safety use temperature is below 700 ℃.Therefore, need to develop a kind of high temperature resistant, low heat conduction, long lifetime and environmental protection close friend's insulating refractory casting material.
For under population expansion, resource exhaustion and environmental pollution pressure, Sustainable development is unique selection.This just requires each step of design, manufacture all will reduce the consumption of resource, the energy as far as possible, reduces discharge of poisonous waste; It is high that the performance of products made thereby is wanted, and it is many that access times are wanted; To recycle as far as possible discarded starting material.For insulating refractory, usually for the inoperative layer of kiln, exigent thermal insulation, but high thermal resistance is not bery high.Now, just there is no need to use high-purity refractory raw material to make, and can use the discarded industrial solid castoffs such as refractory materials to substitute completely.
Summary of the invention
The present invention studies the useless refractory castable of a kind of light-weight foamed profit and manufacturing process thereof, with refractory materials or the calcining coal gangue reclaiming, aluminous cement, alumina powder, silicon ash and admixture (plant or animal protein foaming agent, high strength gypsum setting accelerator, citric acid retardant, third generation water reducer) for raw material is made slip, by hydraulic pressure, deliver to pipeline, whipping agent mixes and mixes with pressurized air with a certain proportion of water, in pipeline, form fine and closely woven foam, mix cement slurry and formation of foam foamed concrete in pipeline, foamed concrete slurry is injected to mould, through maintenance, the demoulding, dry, after burning till, make base substrate, finally, base substrate is cut into the refractory product with fixed measure.Advantage of the present invention is as follows:
1) preparation of whole foams is to carry out in the mode pipeline of automatically controlling, and the interference that work to enhance productivity, alleviate environmental pollution, reduces human factor, to guarantee the quality of made foamed concrete slurry.
2) adopt plant or the animal proteinum raw material of third generation blowing agents, to produce high quality foam.
3) adopt high strength gypsum as setting accelerator, slurry is solidified rapidly in initial set later, to obtain the solid with fine and closely woven pore.
4) adopt citric acid and tripoly phosphate sodium STPP as retardant, to obtain the slurry of good fluidity and to control the slurry presetting period.Because retardant dissolution rate is fast but quantity is few, retardant is controlled the character of liquid phase at the aquation initial stage.Because the dissolving of solidifying agent and setting accelerator is slow, but quantity is dominant, aquation after mid-term solidifying agent and setting accelerator just control the character of liquid phase.With retardant approach exhaustion, cement, the rapid aquation of gypsum, form hydrated calcium aluminate sulfate, makes the quick final set of slurry.Thus, form and there is initial set >=1h, the fine and closely woven stable foam body of the performance of final set≤2h and good fluidity, and make this foam physical efficiency be solidified into reliably light-weight high-strength material.
5) more main, adopt discarded refractory materials or calcining coal gangue to make powder, take protein matter as whipping agent, take cement as solidifying agent, make the light material with tiny porosity, make it the need of work of competent furnace insulation layer, both utilized the solid waste of industrial discharge, reduce again the heat radiation of kiln, obtained the effect of killing two birds with one stone.
The weight percent proportioning of mould material of the present invention is:
The waste aluminium siliceous refractory [material of the waste refractory materials of described recovery for recycling, require levigate to 180 orders (88 μ m tail over≤10%), described calcining coal gangue is the common coal gangue after calcining, require levigate to 180 orders (88 μ m tail over≤10%), described silicon ash, aluminous cement is commercial goods, described high strength gypsum is that index reaches the commercially available prod that < < alpha type high-strength gypsum > > (JC/T2038-2010) requires, described protein foaming agent be commercially available by plant, manufactured as tea saponin or Saponin/TSM whipping agent, or be commercially available by animal hoof and foot, hair, the whipping agent that blood is manufactured, described citric acid, tripoly phosphate sodium STPP, building concrete third generation water reducer, polypropylene fibre is commercially available product of the same name.
Manufacturing process of the present invention is: the foaming cylinder that adds molding device by the plant whipping agent of formula rate, water dilution with 1: 20, be blown into again pressurized air and produce foam, by said ratio, take remaining raw material, add the spice cylinder of molding device, after add remaining water mix and become slip, slip and foam are pressed into respectively to pipeline, in pipeline, are mixed into fluidised form foamed concrete, concrete is injected to mould, through maintenance, the demoulding, dry, can be made into refractory castable of the present invention.
Embodiment
Embodiment 1
Adopt proportioning: 180 orders reclaim refuse clay brick powder 67%, silicon ash 15%, pure calcium aluminate cement 15%, high strength gypsum 3%; Additional: tea saponin whipping agent 0.5%, citric acid 0.5%, tripoly phosphate sodium STPP 0.5%, third generation water reducer 0.1%, polypropylene fibre 0.2%, water 60%.First, plant whipping agent is added to the foaming cylinder of molding device, with the water dilution of 1: 20, then be blown into pressurized air and produce foam; Secondly, by taking remaining raw material, add to add remaining water mix after spice cylinder and become slip; Then, slip and foam are pressed into respectively to pipeline, in pipeline, are mixed into fluidised form foamed concrete; Then, use foamed concrete slurry is injected to mould, through maintenance, the demoulding and 110 ℃ * 24 hours dry refractory castable base substrates that make.Through check, classification temperature>=1200 ℃ of goods, density=400kg/cm
3, compressive strength=0.51MPa, thermal conductivity=0.07w/mk.
Embodiment 2
Adopt proportioning: 180 order calcining coal gangue powder 60%, silicon ash 18%, pure calcium aluminate cement 20%, high strength gypsum 2%; ; Additional: tea saponin whipping agent 0.3%, citric acid 0.6%, tripoly phosphate sodium STPP 0.2%, third generation water reducer 0.1%, polypropylene fibre 0.2%, water 55%.First, plant whipping agent is added to the foaming cylinder of molding device, with the water dilution of 1: 20, then be blown into pressurized air and produce foam; Secondly, by taking remaining raw material, add to add remaining water mix after spice cylinder and become slip; Then, slip and foam are pressed into respectively to pipeline, in pipeline, are mixed into fluidised form foamed concrete; Then, use foamed concrete slurry is injected to mould, through maintenance, the demoulding, make mould material base substrate after within 110 ℃ * 4 hours, being dried, burning till.Through check, classification temperature>=1200 ℃ of goods, density=510kg/cm
3, compressive strength=1.1MPa, thermal conductivity=0.12w/mk.Through experiment, produced that use temperature is high, thermal conductivity is low, not efflorescence after life-time service, do not produce the novel heat-insulation amorphous refractory of harmful HUMAN HEALTH material, reached the solid waste of both utilizing industrial discharge, reduce again the heat radiation of high temperature kiln, obtained the huge effect of killing two birds with one stone.
Claims (2)
1. the useless refractory castable of light-weight foamed profit, is characterized in that: the formula of the weight percent of described mould material is:
The waste aluminium siliceous refractory [material of the waste refractory materials of described recovery for recycling, require levigate to 180 orders, described calcining coal gangue is the common coal gangue after calcining, require levigate to 180 orders, described silicon ash, aluminous cement is commercial goods, described high strength gypsum is commercially available prod, described protein foaming agent be commercially available by plant, manufactured as tea saponin or Saponin/TSM whipping agent, or be commercially available by animal hoof and foot, hair, the whipping agent that blood is manufactured, described citric acid, tripoly phosphate sodium STPP, building concrete third generation water reducer, polypropylene fibre is commercially available product of the same name.
2. a technique of manufacturing refractory castable described in claim 1, it is characterized by: the foaming cylinder that the plant whipping agent by formula rate is added to molding device, water dilution with 1: 20, be blown into again pressurized air and produce foam, by said ratio, take remaining raw material, the spice cylinder that adds molding device, after add remaining water mix and become slip, slip and foam are pressed into respectively to pipeline, in pipeline, be mixed into fluidised form foamed concrete, concrete is injected to mould, through maintenance, the demoulding, dry, can be made into refractory castable of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410338590.9A CN104086196B (en) | 2014-07-12 | 2014-07-12 | A kind of light-weight foamed profit is given up refractory castable and manufacturing process thereof |
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| CN201410338590.9A CN104086196B (en) | 2014-07-12 | 2014-07-12 | A kind of light-weight foamed profit is given up refractory castable and manufacturing process thereof |
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| CN104086196A true CN104086196A (en) | 2014-10-08 |
| CN104086196B CN104086196B (en) | 2015-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860707A (en) * | 2015-05-07 | 2015-08-26 | 邹文君 | Foam brick produced from waste paper and preparation method thereof |
| CN114409418A (en) * | 2022-01-19 | 2022-04-29 | 宜兴市锅炉密封工程有限公司 | High-strength wear-resistant castable and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424280A (en) * | 2003-01-14 | 2003-06-18 | 北京科技大学 | Light refractory bricks |
| CN103539472A (en) * | 2013-11-09 | 2014-01-29 | 宁夏天纵泓光余热发电技术有限公司 | Light thermal insulation refractory castable |
| CN103553701A (en) * | 2013-10-31 | 2014-02-05 | 淮南师范学院 | Preparation method of foamed ceramic thermal insulation material as well as product thereof |
| CN103553526A (en) * | 2013-10-16 | 2014-02-05 | 上海利物宝建筑科技有限公司 | Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof |
-
2014
- 2014-07-12 CN CN201410338590.9A patent/CN104086196B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424280A (en) * | 2003-01-14 | 2003-06-18 | 北京科技大学 | Light refractory bricks |
| CN103553526A (en) * | 2013-10-16 | 2014-02-05 | 上海利物宝建筑科技有限公司 | Gypsum-based door and window seam filling and sealing mortar as well as preparation method and application thereof |
| CN103553701A (en) * | 2013-10-31 | 2014-02-05 | 淮南师范学院 | Preparation method of foamed ceramic thermal insulation material as well as product thereof |
| CN103539472A (en) * | 2013-11-09 | 2014-01-29 | 宁夏天纵泓光余热发电技术有限公司 | Light thermal insulation refractory castable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860707A (en) * | 2015-05-07 | 2015-08-26 | 邹文君 | Foam brick produced from waste paper and preparation method thereof |
| CN114409418A (en) * | 2022-01-19 | 2022-04-29 | 宜兴市锅炉密封工程有限公司 | High-strength wear-resistant castable and preparation method and application thereof |
| CN114409418B (en) * | 2022-01-19 | 2023-02-07 | 宜兴市锅炉密封工程有限公司 | High-strength wear-resistant castable and preparation method and application thereof |
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| CN104086196B (en) | 2015-12-09 |
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Application publication date: 20141008 Assignee: Zaozhuang Gai Ze stove Engineering Co., Ltd Assignor: Ruitai Technology Co., Ltd. Contract record no.: 2016370000010 Denomination of invention: Foam light-weight waste-reutilization refractory castable and manufacturing technique thereof Granted publication date: 20151209 License type: Exclusive License Record date: 20160310 |
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