CN104557129B - A kind of heat-preserving sintered brick and preparation method thereof - Google Patents
A kind of heat-preserving sintered brick and preparation method thereof Download PDFInfo
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- CN104557129B CN104557129B CN201510057913.1A CN201510057913A CN104557129B CN 104557129 B CN104557129 B CN 104557129B CN 201510057913 A CN201510057913 A CN 201510057913A CN 104557129 B CN104557129 B CN 104557129B
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Abstract
The invention provides a kind of heat-preserving sintered brick and preparation method thereof. The preparation method of heat-preserving sintered brick, comprises the following steps: steps A: by weight, get perlite 20-40 part, adhesive 40-60 part, blowing agent 5-30 part, mix, obtain compound; Step B: by molded described mixture cold; Step C: the brick that described cold moudling is obtained is placed in sintering furnace is warming up to 800～1000 DEG C with 5～10 DEG C/min speed, then is incubated 60-140min under air atmosphere, the cooling product that obtains; Wherein, described adhesive is the mixture of foam glass leftover pieces and boron glass. The heat-preserving sintered brick unit weight that the present invention makes is little, and its density is less than 900kg/m3, and this heat-preserving sintered brick thermal conductivity factor is low, fire prevention, cost are low, the useless environmental protection of profit.
Description
Technical field
The present invention relates to insulating brick field, in particular to a kind of heat-preserving sintered brick andPreparation method.
Background technology
At present, building thermal insulation material is with organic insulation material (polystyrene foam plate, extrusion moldingPolystyrene foam plate and polyurethane foam board) dominate, this class insulation material is notOnly light weight, sound insulation, heat insulation, good heat insulating, and production technology is simple, easy for installation,But this class insulation material belongs to combustible material, has the danger of initiation fire. Once occurFire, burning velocity is exceedingly fast, if puted out a fire to save life and property not in time, consequence is hardly imaginable. In addition, thisA little organic insulation materials, in combustion enginnering, can produce a large amount of smog and toxic gas, giveSurvivor and rescue personnel also can bring very large harm. Itself belongs to inorganic heat insulation material notCombustible material, replacing organic heat-insulating brick is must becoming of national Building Fire Protection safety, green energy conservationGesture.
Foam glass is a kind of heat insulation, sound absorption of superior performance, moistureproof, fireproof lightweightHigh-strength building material and ornament materials, but in its production process, firing and cutting especiallyIn manufacturing procedure, can produce the foam glass leftover pieces of some. Due to domestic to foamThe recovery and utilization technology of leftover pieces is also immature, transports these leftover pieces that pile up like a mountain to whatSide is the thorny problem that enterprise faces. If in can not and producing these leftover piecesThe waste product producing is reasonably recycled, and can cause very large resource and energy consumption on the one handWaste, also brings bad impact to surrounding enviroment on the other hand.
In view of this, special proposition the present invention.
Summary of the invention
The first object of the present invention is to provide a kind of heat preservation sintering taking foam glass as raw materialThe preparation method of brick, the heat-preserving sintered brick preferred foams glass edge that described preparation method makesCorner material is raw material, the useless environmental protection of profit.
The first object of the present invention is to provide a kind of heat preservation sintering taking foam glass as raw materialThe preparation method of brick, the heat-preserving sintered brick unit weight that described preparation method makes is little, its densityBe less than 900kg/m3。
The second object of the present invention is to provide a kind of described heat-preserving sintered brick, and this insulation is burntNot only unit weight is little for knot brick, and thermal conductivity factor is low, fire prevention, cost are low.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A preparation method for heat-preserving sintered brick, comprises the following steps:
Steps A: by weight, get perlite 20-40 part, adhesive 40-60 part, send outInfusion 5-30 part, mixed grinding, obtains compound;
Step B: by molded described mixture cold;
Step C: the brick that described cold moudling is obtained is placed in sintering furnace, in air atmosphereUnder be warming up to 800～1000 DEG C with 5～10 DEG C/min speed, then be incubated 60-140min, coolingObtain product;
Wherein, described adhesive is the mixture of foam glass leftover pieces and boron glass.
The preparation method of above-mentioned heat-preserving sintered brick is taking perlite as framework material, with foam glassWith boron glass be adhesive, then add a certain amount of blowing agent, after cold moudling, adoptSpecific sintering condition makes foam glass and boron glass generation melting, the liquid that both meltings producePlay mutually binding agent, light pearl stone granular cementation is got up, blowing agent is burning simultaneouslyIn knot heating process, produce bubble, in the adhesive of melting, produce bubble of uniform size.Because making brick body inside, sintering method produces many bubble structures, and former strand foam glass usedGlass and perlite all belong to light material, and therefore, the fired brick unit weight finally making is very little, closeDegree is less than 900kg/m3。
Wherein, gas atmosphere, temperature, programming rate and temperature retention time when sintering is to sinteringThe crystal moulding of brick is most important, only has the air atmosphere of employing, the sintering temperature of 800～1000 DEG CThe temperature retention time of the intensification 60-140min of degree, 5～10 DEG C/min just can obtain sintering of the present inventionCrystallite dimension, pore size and grain-boundary shape and the distribution of brick, could both meet insulating brickTraditional performance requirement, reaches again the technique effect that unit weight is very little. Particularly, at 800～1000 DEG CSintering temperature under, perlite reaches softening degree, combination in the nature of glass of formation because being heatedThe very large pressure of water vapor output, volume expands rapidly; Foam glass and boron glass melting simultaneouslyBecome liquid phase, blowing agent produces equally distributed bubble in melt liquid. Cooling in the nature of glassTo below softening temperature time, the cavity structure that just congeals into, forms the brick body of porous.
In addition, due to raw materials used cheap in above-mentioned preparation method, wherein foam glassCan also utilize leftover pieces, therefore production cost decreases.
Further, the method for described cold moudling is: described compound is added to cold stamping dieIn tool, be forced into 20～100KN, then pressurize 0.5-2min, the demoulding.
Adopting above cold moudling is mainly to make base substrate have certain intensity, is beneficial to conveying.
Further, described cooling method is: the speed with 8-12 DEG C/min is cooling. AnxiousSharp fall temperature can produce irregular crystal formation, and it is used that the speed of 8-12 DEG C/min is applicable to the present inventionRaw material, make the product crystal formation rule obtaining.
Further, described cooling method is that nature is cooling. Although the speed of cooling naturallySlower, but it is more regular to obtain crystal formation, and there are energy-saving and emission-reduction.
Further, described blowing agent is graphite powder; Its unit volume bubble production volume is large, foamingEfficiency is high.
Further, described foam glass and perlite are light material. Further to reduceThe density of product.
Further, the weight ratio of described foam glass and described boron glass is 0～3:1. AdoptThe adhesive bond mixing by this ratio is effective, and required heating-up temperature is low.
Further, the method for described mixed grinding is: first utilize ball mill wet-milling 8-12h,Dry again, utilize afterwards ball mill dry grinding 8-12h. Adopt the mode of wet-milling and dry grinding combination,To ensure uniform particles exquisiteness.
Further, after described step B and before described step C, be also dried.The moisture evaporation adding while making moulding.
Further, described dry method is: naturally ventilated dry 24h. Adopt this dryDry mode realizes the slow volatilization of moisture, avoids rapid draing to crack.
Further, the foam glass leftover pieces of the preferred industrial waste of foam glass, like this canSo that waste product is rationally recycled, avoid causing on the one hand resource and energy consumption waste, the opposing partyFace is also beneficial to the environmental protection of surrounding enviroment.
A kind of heat-preserving sintered brick, it adopts the preparation method of above-mentioned heat-preserving sintered brick to make.
This heat-preserving sintered brick has environmental protection, unit weight is little, thermal conductivity factor is low, fire protecting performance is good,The advantage that cost is low.
Compared with prior art, beneficial effect of the present invention is:
(1) heat-preserving sintered brick unit weight is little, and thermal conductivity factor is low, fire prevention.
(2) raw material environmental protection, cost are low.
(3) equipment cost is low.
(4) technique is simple.
Detailed description of the invention
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but thisThose skilled in the art will be understood that, the following example is only for the present invention is described, and should not lookFor limiting the scope of the invention. Unreceipted actual conditions person in embodiment, according to normal conditionOr the condition of manufacturer's suggestion is carried out. The unreceipted person of production firm of agents useful for same or instrument, allFor the conventional products that can obtain by commercially available purchase.
Embodiment 1
By 40 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:0) 50 parts,10 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. In air fromSo precipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time24h. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, be forced into50KN, then pressurize 1min, the demoulding. By the sample of colding pressing be placed in the dry environment ventilating fromSo dry 24h is placed in sintering furnace and is warming up to 5 DEG C/min speed under air atmosphere900 DEG C, insulation 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 2
By 42 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:0) 48 parts,10 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. In air fromSo precipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time24h. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, be forced into50KN, then pressurize 1min, the demoulding. By the sample of colding pressing be placed in the dry environment ventilating fromSo dry 24h is placed in sintering furnace and is warming up to 5 DEG C/min speed under air atmosphere900 DEG C, insulation 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 3
By 38 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:0) 52 parts,10 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. In air fromSo precipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time24h. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, be forced into50KN, then pressurize 1min, the demoulding. By the sample of colding pressing be placed in the dry environment ventilating fromSo dry 24h is placed in sintering furnace and is warming up to 5 DEG C/min speed under air atmosphere900 DEG C, insulation 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 4
By 36 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:0) 49 parts,15 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. In air fromSo precipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time24h. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, be forced into50KN, then pressurize 1min, the demoulding. By the sample of colding pressing be placed in the dry environment ventilating fromSo dry 24h is placed in sintering furnace and is warming up to 5 DEG C/min speed under air atmosphere900 DEG C, insulation 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 5
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:0) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 6
By 40 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:0) 55 parts,5 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 7
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 8
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 1:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 9
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 0:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 10
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 800 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 11
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 1000 DEG C with 5 DEG C/min speed under air atmosphere,Insulation 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 12
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 20KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 13
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 90KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 120min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 14
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 60min, is then down to room temperature with 10 DEG C/min speed.
Embodiment 15
By 39 parts of expanded perlites, (foam glass leftover pieces+boron glass of 3:1) 54 parts,7 parts of graphite powders and water pack in ball grinder, after wet-milling 10h, pour out. Nature in airPrecipitation 3h left and right, pours out water. Put into oven for drying, 100 DEG C of left and right of temperature, time 24H. Then the 10h that dry grinds again, sieves. Mixed material is added to cold stamping die, is forced into 50KN,Then pressurize 1min, the demoulding. The sample of colding pressing is placed in the dry environment ventilating natural drying24h is placed in sintering furnace and is warming up to 900 DEG C with 5 DEG C/min speed under air atmosphere, protectsTemperature 30min, is then down to room temperature with 10 DEG C/min speed.
Test
In order to further illustrate of the present invention producing effect, this experimental test embodiment 1-15Density, thermal conductivity factor and combustibility, result is as shown in table 1-2. From result, thisBright heat-preserving sintered brick has that unit weight is little concurrently, high insulating effect, non-flammable advantage, therefore canBe applied to the heat insulating work such as body of wall, pipeline.
Density, thermal conductivity factor and the flammable result of table 1 embodiment 1-7
Density, thermal conductivity factor and the flammable result of table 2 embodiment 8-15
Although illustrated and described the present invention with specific embodiment, but it will be appreciated thatIn the situation that not deviating from the spirit and scope of the present invention, can make many other change andAmendment. Therefore, this means in claims and comprise and belonging in the scope of the inventionAll such changes and modifications.
Claims (10)
1. a preparation method for heat-preserving sintered brick, is characterized in that, comprises the following steps:
Steps A: by weight, get perlite 20-40 part, adhesive 40-60 part, send outInfusion 5-30 part, mixed grinding, obtains compound;
Step B: by molded described mixture cold;
Step C: the brick that described cold moudling is obtained is placed in sintering furnace, in air atmosphereUnder be warming up to 800～1000 DEG C with 5～10 DEG C/min speed, then be incubated 60-140min, coolingObtain product;
Wherein, described adhesive is the mixture of foam glass leftover pieces and boron glass.
2. the preparation method of heat-preserving sintered brick according to claim 1, is characterized in that,The method of described cold moudling is: described compound is added in cold stamping die, be forced into20～100KN, then pressurize 0.5-2min, the demoulding.
3. the preparation method of heat-preserving sintered brick according to claim 1, is characterized in that,Described cooling method is: the speed with 8-12 DEG C/min is cooling.
4. the preparation method of heat-preserving sintered brick according to claim 1, is characterized in that,Described cooling method is that nature is cooling.
5. the preparation method of heat-preserving sintered brick according to claim 1, is characterized in that,Described blowing agent is graphite powder; Described foam glass leftover pieces are light foam glass edge corner material;Described perlite is expanded perlite.
6. the preparation method of heat-preserving sintered brick according to claim 1, is characterized in that,The weight ratio of described foam glass leftover pieces and described boron glass is 0～3:1.
7. the preparation method of heat-preserving sintered brick according to claim 1, is characterized in that,The method of described mixed grinding is: first utilize ball mill wet-milling 8-12h, then dry, afterwardsUtilize ball mill dry grinding 8-12h.
8. the preparation method of heat-preserving sintered brick according to claim 7, is characterized in that,After described step B and before described step C, be also dried.
9. the preparation method of heat-preserving sintered brick according to claim 8, is characterized in that,Described dry method is: naturally ventilated dry 24h.
10. a heat-preserving sintered brick, is characterized in that, it adopts claim 1-9 arbitraryThe preparation method of the heat-preserving sintered brick described in makes.
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| CN106587910B (en) * | 2016-12-27 | 2020-08-07 | 定远县明友墙体材料有限责任公司 | Preparation method of environment-friendly low-cost sintered brick |
| CN106747605A (en) * | 2016-12-27 | 2017-05-31 | 定远县明友墙体材料有限责任公司 | Preparation method of insulating brick with good thermal stability and heat insulation effect |
| CN107892546A (en) * | 2017-12-11 | 2018-04-10 | 李珠 | Sintering grow pearlite heat-insulation plate and preparation method thereof |
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