CN108298995A - A kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof - Google Patents

A kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof Download PDF

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CN108298995A
CN108298995A CN201810081824.4A CN201810081824A CN108298995A CN 108298995 A CN108298995 A CN 108298995A CN 201810081824 A CN201810081824 A CN 201810081824A CN 108298995 A CN108298995 A CN 108298995A
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low
granularity
adobe
silica powder
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CN108298995B (en
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张安国
陈光亮
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Luoyang Sanhe New Material Technology Co.,Ltd.
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Yanshi Three Thermal Insulation Technology Co Ltd
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Abstract

The present invention provides a kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof.The fine silica powder that the fine silica powder and granularity for being 300~500nm using granularity are 100~200nm is primary raw material, CaO MgO SiO2Matter refractory fibre is that reinforcing material obtains low-dimensional SiO2High-strength light heat-preserving material sets ultra-fine inorganic fibre in the material surface and sprays glue, then obtains lightweight thermal insulation material by easy fired.Using byproduct fine silica powder as primary raw material, using harmless biomass Soluble Fiber as reinforcing material, the intensity that spraying glue improves adobe is set on adobe surface, reduces briquetting pressure and increases adobe internal voids rate, reduce the thermal conductivity of thermal insulation material；Easy fired improves product strength, and does not change the microcellular structure of thermal insulation material, thermal conductivity when not increasing hot operation, it is therefore prevented that the generation of insulating brick moisture absorption aquation further increases heat-insulating property.

Description

A kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof
Technical field
The invention belongs to technical field of refractory materials.More particularly to a kind of low-dimensional SiO2High-strength light heat-preserving material and its Preparation method.
Technical background
With the continuous consumption of resource, energy problem is more and more significant, and the mankind are to energy saving and environmental protection requirement It is higher and higher.For refractory material as the critical material in high temperature kiln industry, heat conductivility is energy saving to hot industry industry Emission reduction plays conclusive effect, and it is even more to have great importance that wherein light thermal insulation fire-resistant material, which serves as kiln insulating layer,.
Light thermal insulation fire-resistant material mainly has refractory fibre and calcium silicate board etc. at present, refractory fibre, calcium silicates when low temperature The thermal coefficient of product it is relatively low (under room temperature, the thermal coefficient of refractory fibre be 0.03W/mk, the thermal coefficient of calcium silicate products For 0.06W/mk), the thermal coefficient both increased with temperature is continuously increased, and thermal coefficient higher (can such as exist when high temperature At 600 DEG C, the thermal coefficient of refractory fibre is 0.2W/mk, and the thermal coefficient of calcium silicate products is 0.7W/mk).Therefore, Such light heat insulation material with the raising of temperature its thermal coefficient increase it is obvious that when being applied in the slightly higher environment of temperature without Method reaches the heat insulation effect of requirement.
It is well known that when material internal introduces micropore/nano-pore, gas molecule can be effectively reduced using the microcellular structure Thermal coefficient and reduce the convection current conduction heat transfer of material internal, under high temperature the effect embody more obvious, therefore higher The thermal coefficient of this kind of material is not in be greatly improved under temperature environment, can preferably prevent dissipating for heat under high temperature It loses.Based on the principle, existing heat preserving and insulating material is concentrated to be developed to poromerics, for example, by using aerosil and enhancing Heat insulation felt thermal insulation material prepared by fiber effectively reduces the heat conduction of material using the nano-pore structure in aerosil Coefficient, and enhance its soundproof effect, in building material field extensive use, but its aerosil used belongs to conjunction At raw material, preparation process is complicated, and production cost is high, and fire resisting material field rarely has application；For example, by using nano-hole silica powder with Composite heat-insulated material prepared by reinforcing fiber and other additives, the guarantor of material is improved using the nano-pore structure of siliceous powder Warm nature energy, but this materials'use temperature is relatively low, is such as generally used in 600 DEG C or so, and thermal coefficient exists at this temperature 0.05W/mk or so, still cannot meet the use under higher environment, while nano-hole silica powder used is practical is Collosol and gel etc. is chemically synthesized block body stephanoporate silica and is made.Therefore, titanium dioxide is used in fire resisting material field at present That there are preparation processes is complicated for thermal insulation material prepared by silica aerogel, nano-hole silica material and fiber, production cost is higher asks Topic, while its thermal coefficient is still higher in uses such as all multi-temperatures higher occasions such as cement kiln hot air duct, it cannot be complete The needs of full up foot energy-saving and emission-reduction.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of low-dimensional SiO2High-strength light heat-preserving material, the material with The byproduct zero dimension fine silica powder of smelting ferrosilicon or metallic silicon is primary raw material, and biosoluble fibers are strengthening material Material, and ultra-fine inorganic fibre is used to spray glue as surface texture reinforcing agent, the thermal insulation material thermal coefficient low and high temperature being prepared Be not in the case where thermal coefficient increases during use；And the structural strength of thermal insulation material is high, can effectively prevent adobe Breakage；
The present invention also provides a kind of low-dimensional SiO2High-strength light heat-preserving material and preparation method thereof, this method is in low pressure Under conditions of briquetting pressure use easy fired so that the thermal insulation material of preparation more lightweight, be obviously improved its heat-insulating property, And intensity bigger.
The present invention is achieved by the following technical solutions
A kind of low-dimensional SiO2High-strength light heat-preserving material, the low-dimensional SiO2High-strength light heat-preserving material is by following The raw material of weight percentage is prepared：
Granularity is the fine silica powder of 300~500nm：40~55%；
Granularity is the fine silica powder of 100~200nm：30~40%；
CaO-MgO-SiO2Matter refractory fibre：15~30%.
The low-dimensional SiO2High-strength light heat-preserving material, the granularity are the fine silica powder of 300~500nm With granularity be 100~200nm fine silica powder in include following component：SiO2>=98.5%, C≤0.8%, Al2O3≤ 0.13%, MgO≤0.16%, CaO≤0.07%, Fe2O3≤ 0.01%, K2O≤0.33%；And it is amorphous state spherical shape.
The low-dimensional SiO2High-strength light heat-preserving material, the CaO-MgO-SiO2The length of matter refractory fibre is 3 ~5mm；The mass percentage that wherein mass percentage of CaO is 30.0~35.0%, MgO is 5.0~8.0%, SiO2 Mass percentage be 57.0~65.0%.
A kind of above-mentioned low-dimensional SiO2The preparation method of high-strength light heat-preserving material, this approach includes the following steps：
(1) raw material needed for preparing：Granularity is the fine silica powder of 300~500nm, and granularity is the dioxy of 100~200nm SiClx micro mist, CaO-MgO-SiO2Matter refractory fibre, ultra-fine inorganic fibre spray glue；
(2) raw material for preparing step (1) according to the weight percent of above-mentioned requirements, granularity are the dioxy of 300~500nm SiClx micro mist, the fine silica powder and CaO-MgO-SiO that granularity is 100~200nm2Matter refractory fibre, is added to blender In mixed, 10000-20000 revs/min of blender rotating speed, after mixing i.e. obtain mixture；
(3) mixture for obtaining step (2) is added in the mold of four-column hydraulic press, is 2.8~3.5MPa's in pressure Under the conditions of mixture is suppressed into molding adobe respectively；The adobe for then taking out compression moulding, in adobe surface even application The ultra-fine inorganic fibre that step (1) prepares sprays glue, obtains the adobe that surface is equipped with spraying glue；
(4) adobe of step (3) the described surface equipped with spraying glue is placed in dry kiln and is dried, it is dry to complete Afterwards；It is sent into low-temperature tunnel kiln and is burnt into, after firing, spray glue-line burning mistake, (the cooling zone of tunnel oven is cooled to room temperature with kiln It is cooling) to get to the low-dimensional SiO2High-strength light heat-preserving material.
The low-dimensional SiO2The preparation method of high-strength light heat-preserving material, the ultra-fine inorganic fibre described in step (3) It is 0.2~0.5mm (carrying out even application to 6 surfaces of adobe) that glue, which is sprayed, in the thickness of adobe surface spraying.
The humble SiO2The preparation method of high-strength light heat-preserving material, step (4) described surface are equipped with spraying glue The drying that is carried out in dry kiln of adobe be：Dry 5~7h under the conditions of 90~120 DEG C；It is carried out in the low-temperature tunnel kiln Firing be：In dry kiln it is dry after, into low-temperature tunnel kiln in keep the temperature 0.5~1 hour under the conditions of 800~900 DEG C.
Compared with prior art, the present invention has following positive beneficial effect
The fine silica powder that the present invention uses is raw material for the byproduct of smelting ferrosilicon or smelting Si, is both reduced The discarded waste caused by resource of byproduct and the influence caused by environment, also reduce production cost, realize returning for resource It receives and recycles, achieved the effect that energy-saving and emission-reduction；
The CaO-MgO-SiO that the present invention uses2Matter refractory fibre, biosoluble fibers are avoided as reinforcing material The harm caused by human body in refractory material production process.With a large amount of uses of heat insulating refractory material, to prepare every year a large amount of Heat insulating refractory material, the material used in preparation process can affect to human body, especially for a long time at this The technical staff to work in environment can be greatly affected, and the soluble biomass fiber that the present invention uses, and both avoid The harm caused by technical staff's body during material preparation, also makes later stage offal treatment be easier, reduce largely The input of manpower and materials has obtained the excellent effect of energy-saving and emission-reduction；
The present invention sprays glue in the firebrick billet surface spraying ultra-fine inorganic fibre of compression moulding, and the coating spraying is in adobe Surface can preferably protect adobe, significantly reduce the breakage rate of adobe in the handling process, and substantially increase brick The structural strength of base, while briquetting pressure is also reduced, it is protected to increase the voidage of adobe, further reduced the fire resisting The thermal conductivity of adiabator solves the problems, such as that the briquetting pressure of current light heat insulation material demand is big and intensity is low, thermal conductivity is high； The present invention is in preparation process, the easy fired of 800~900 DEG C of the adobe progress to being coated with sprayed coating, surface in sintering process The inorganic fibre mat meeting nature of spraying burns the heat preservation that the ultra-fine inorganic fibre spraying glue for losing, thus spraying does not interfere with material itself Effect；Meanwhile preparing spherical SiO 2 nano powder accumulates the microcellular structure to be formed not in thermal insulation material in sintering process of the invention It can change, thermal conductivity when will not increase hot operation；Easy fired makes thermal insulation material ontology achieve the effect that tentatively to be sintered, The intensity for further increasing thermal insulation material greatly reduces the breakage rate of transport and building process；And easy fired promotes to protect Active silica fume is changed into stable state inside adiabator, avoids middle active silica fume moisture absorption water in adobe The generation of change；Moreover, using easy fired process, the insulating brick more lightweight of preparation can be made, improve guarantor to a certain extent Warm nature energy；
The present invention is using byproduct fine silica powder as primary raw material, then using biomass Soluble Fiber as strengthening material Material carries out mixing and is compressed to adobe；Then it is equipped with one layer of ultra-fine inorganic fibre on adobe surface layer and sprays glue；The presence of the sprayed coating The intensity of adobe can be improved so that the pressure that adobe is suppressed in preparation process can be reduced indirectly, be increased inside adobe indirectly Between voidage, further reduced the thermal conductivity of the thermal insulation material, increase its heat-insulating property；The presence of the sprayed coating increases The intensity for having added the thermal insulation material greatly reduces the damage caused by adobe in production process, improves yield rate, reduce original The waste of material；Then easy fired is used in preparation process, so that thermal insulation material is reached preliminary sintering, is further improved guarantor The intensity of adiabator product, it is therefore prevented that thermal insulation material is damaged in building construction, while not changing the micropore knot in thermal insulation material Structure, when hot operation, will not increase thermal conductivity, and active silica fume is changed into stable state inside thermal insulation material, it is therefore prevented that The generation of insulating brick moisture absorption aquation, while making the thermal insulation material more lightweight prepared, further increase its heat-insulating property.
Description of the drawings
Fig. 1 shows the micro-structure diagrams of thermal insulation material prepared by the present invention；
Fig. 2 indicates the product figure of thermal insulation material prepared by the present invention.
Specific implementation mode
The present invention is described in more details below by specific implementation mode, but is not intended to restrict the invention Protection domain.
Embodiment 1
A kind of low-dimensional SiO2High-strength light heat-preserving material, the low-dimensional SiO2High-strength light heat-preserving material is by following The raw material of weight percentage is prepared：
Granularity is the fine silica powder of 300~500nm：55%
Granularity is the fine silica powder of 100~200nm：30%
CaO-MgO-SiO2Matter refractory fibre：15%；
Wherein, the titanium dioxide that the fine silica powder and granularity that the granularity is 300~500nm are 100~200nm It include following component in silicon powder：SiO2>=98.5%, C≤0.8%, Al2O3≤ 0.13%, MgO≤0.16%, CaO≤ 0.07%, Fe2O3≤ 0.01%, K2O≤0.33%；And it is amorphous state spherical shape；
Wherein, the CaO-MgO-SiO2The length of matter refractory fibre is 3~5mm；The wherein mass percentage of CaO is The mass percentage of 30.0%, MgO are 5.0%, SiO2Mass percentage be 65.0%.
Above-mentioned low-dimensional SiO2The preparation method of high-strength light heat-preserving material, this approach includes the following steps：
(1) raw material needed for preparing：Granularity is the fine silica powder 55% of 300~500nm, and granularity is 100~200nm's Fine silica powder 30%, CaO-MgO-SiO2Matter refractory fibre 15%, ultra-fine inorganic fibre spray glue；
(2) raw material for preparing step (1)：Granularity be 300~500nm fine silica powder, granularity be 100~ The fine silica powder and CaO-MgO-SiO of 200nm2Matter refractory fibre, weight percent as requested are added to horizontal stir It mixes in machine and is mixed, blender rotating speed is 15000 revs/min, obtains mixed dry material after mixing；
(3) mixed dry material for obtaining step (2) is added in the mold of four-column hydraulic press, in the condition that pressure is 2.8MPa It is lower that mixed dry material is compressed to molding adobe；After the completion of compacting, hydraulic press automatic demoulding takes out molding adobe, then in adobe The ready ultra-fine inorganic fibre of surface even application step (1) sprays glue, and the thickness of spraying is 0.3mm, after the completion of spraying It is equipped with the molding adobe that ultra-fine inorganic fibre sprays glue to surface；
(4) by step (3) described surface be equipped with superfine fibre spray glue molding adobe be placed in dry kiln 100 ± Dry 5h under the conditions of 5 DEG C, after the completion of dry；It is sent into low-temperature tunnel kiln and keeps the temperature 0.5h under the conditions of 800~900 DEG C, kept the temperature Cheng Hou, spraying glue-line burn mistake naturally, are cooled to room temperature to get to low-dimensional SiO of the present invention with kiln2High-strength light heat-preserving Material.The micro-structure diagram of products obtained therefrom is detected, as shown in Figure 1.
Embodiment 2
A kind of low-dimensional SiO2High-strength light heat-preserving material, the low-dimensional SiO2High-strength light heat-preserving material is by following The raw material of weight percentage is prepared：
Granularity is the fine silica powder of 300~500nm：45%
Granularity is the fine silica powder of 100~200nm：30%
CaO-MgO-SiO2Matter refractory fibre：25%；
Wherein, the silica that the fine silica powder i.e. granularity that the granularity is 300~500nm is 100~200nm It include following component in micro mist：SiO2>=98.5%, C≤0.8%, Al2O3≤ 0.13%, MgO≤0.16%, CaO≤ 0.07%, Fe2O3≤ 0.01%, K2O≤0.33%；And it is amorphous state spherical shape；
Wherein, the CaO-MgO-SiO2The length of matter refractory fibre is 3~5mm；Wherein the content of CaO is 35.0%, The content of MgO is 8.0%, SiO2Content be 57.0%.
The preparation method of above-mentioned low-dimensional SiO2 high-strength light heat-preserving materials, this approach includes the following steps：
(1) raw material needed for preparing：Granularity is the fine silica powder 45% of 300~500nm, and granularity is 100~200nm's Fine silica powder 30%, CaO-MgO-SiO2Matter refractory fibre 25%, ultra-fine inorganic fibre spray glue；
(2) raw material for preparing step (1)：Granularity be 300~500nm fine silica powder, granularity be 100~ The fine silica powder of 200nm, CaO-MgO-SiO2Matter refractory fibre, weight percent as requested are added to Horizontal stirring It is mixed in machine, 15000 revs/min of blender rotating speed obtains mixed dry material after mixing；
(3) mixed dry material for obtaining step (2) is added in the mold of four-column hydraulic press, in the condition that pressure is 3.5MPa It is lower that mixed dry material is suppressed into molding adobe；After the completion of compacting, hydraulic press automatic demoulding takes out molding adobe, then in adobe The ready ultra-fine inorganic fibre of surface even application step (1) spray glue, the thickness of spraying is 0.5mm, after the completion of spraying Obtain molding adobe of the surface equipped with ultra-fine inorganic fibre spraying glue；
(4) the molding adobe that step (3) described surface is equipped with to ultra-fine inorganic fibre spraying glue is placed in dry kiln Dry 6h under the conditions of 110 ± 5 DEG C；It after the completion of drying, is sent into low-temperature tunnel kiln and keeps the temperature 0.8h under the conditions of 800~900 DEG C, protect After the completion of temperature, spraying glue-line burn mistake naturally, be cooled to room temperature to get to low-dimensional SiO of the present invention with kiln2High-strength light Thermal insulation material.The micro-structure diagram of products obtained therefrom is detected, as shown in Figure 1.
Embodiment 3
A kind of low-dimensional SiO2High-strength light heat-preserving material, the low-dimensional SiO2High-strength light heat-preserving material is by following The raw material of weight percentage is prepared：
Granularity is the fine silica powder of 300~500nm：40%
Granularity is the fine silica powder of 100~200nm：40%
CaO-MgO-SiO2Matter refractory fibre：20%；
Wherein, the silica that the fine silica powder i.e. granularity that the granularity is 300~500nm is 100~200nm It include following component in micro mist：SiO2>=98.5%, C≤0.8%, Al2O3≤ 0.13%, MgO≤0.16%, CaO≤ 0.07%, Fe2O3≤ 0.01%, K2O≤0.33%；And it is amorphous state spherical shape；
Wherein, the CaO-MgO-SiO2The length of matter refractory fibre is 3~5mm；Wherein the content of CaO is 33.0%, The content of MgO is 7.0%, SiO2Content be 60.0%.
Above-mentioned low-dimensional SiO2The preparation method of high-strength light heat-preserving material, this approach includes the following steps：
(1) raw material needed for preparing：Granularity is the fine silica powder 40% of 300~500nm, and granularity is 100~200nm's Fine silica powder 40%, CaO-MgO-SiO2Matter refractory fibre 20%, ultra-fine inorganic fibre spray glue；
(2) raw material for preparing step (1)：Granularity be 300~500nm fine silica powder, granularity be 100~ The fine silica powder of 200nm, CaO-MgO-SiO2Matter refractory fibre, weight percent as requested are added to Horizontal stirring It is mixed in machine, 15000 revs/min of blender rotating speed obtains mixed dry material after mixing；
(3) mixed dry material for obtaining step (2) is added in the mold of four-column hydraulic press, in the condition that pressure is 3.0MPa It is lower that mixed dry material is suppressed into molding adobe；After the completion of compacting, hydraulic press automatic demoulding takes out molding adobe, then in adobe The ready ultra-fine inorganic fibre of surface even application step (1) spray glue, the thickness of spraying is 0.3mm, after the completion of spraying Obtain molding adobe of the surface equipped with ultra-fine inorganic fibre spraying glue；
(4) the molding adobe that step (3) described surface is equipped with to ultra-fine inorganic fibre spraying glue is placed in dry kiln Dry 5h under the conditions of 120 ± 5 DEG C；It after the completion of drying, is sent into low-temperature tunnel kiln and keeps the temperature 1h under the conditions of 800~900 DEG C, keep the temperature After the completion, spraying glue-line burns mistake naturally, is cooled to room temperature to get to low-dimensional SiO of the present invention with kiln2High strength light quality guarantee Adiabator.The micro-structure diagram of products obtained therefrom is detected, as shown in Figure 1.
A is the micro-structure diagram of product in Fig. 1, and b is CaO-MgO-SiO2 matter in the product micro-structure diagram described in Fig. 1 a The enlarged drawing of refractory fibre, c be Fig. 1 a described in product micro-structure diagram in fine silica powder enlarged drawing；As seen from the figure： Fiber is interspersed with fine silica powder in product, and preparing spherical SiO 2 micro powder granule is accumulated to be formed in thermal insulation material after easy fired Microcellular structure does not change substantially, and microcellular structure reduces the convection current conduction of heat, also further increases heat-insulating property, while high Thermal conductivity will not increase when temperature work.
Low-dimensional SiO prepared by above-described embodiment 1~32The compressive resistance of high-strength light heat-preserving material and 800 DEG C of conditions Under thermal coefficient be detected (according to national standards or professional standard is detected), and to the results are shown in Table 1：
Table 1 prepares low-dimensional SiO2The testing result of high-strength light heat-preserving material
From testing result：The thermal coefficient of thermal insulation material prepared by the present invention at 800 DEG C is very low, illustrate its Has extraordinary heat-insulating property at such as 800 DEG C of normal temperature in use, while it has very high cold crushing strength.
Application Example 4
A kind of low-dimensional SiO2High-strength light heat-preserving material, the low-dimensional SiO2High-strength light heat-preserving material is by following The raw material of weight percentage is prepared：
Granularity is the fine silica powder of 300~500nm：40%
Granularity is the fine silica powder of 100~200nm：40%
CaO-MgO-SiO2Matter refractory fibre：20%；
Wherein, the silica that the fine silica powder i.e. granularity that the granularity is 300~500nm is 100~200nm It include following component in micro mist：SiO2>=98.5%, C≤0.8%, Al2O3≤ 0.13%, MgO≤0.16%, CaO≤ 0.07%, Fe2O3≤ 0.01%, K2O≤0.33%；And it is amorphous state spherical shape；
Wherein, the CaO-MgO-SiO2The length of matter refractory fibre is 3~5mm；Wherein the content of CaO is 33.0%, The content of MgO is 7.0%, SiO2Content be 60.0%.
Above-mentioned low-dimensional SiO2The preparation method of high-strength light heat-preserving material, this approach includes the following steps：
(1) raw material needed for preparing：Granularity is the fine silica powder 40% of 300~500nm, and granularity is 100~200nm's Fine silica powder 40%, CaO-MgO-SiO2Matter refractory fibre 20%, ultra-fine inorganic fibre spray glue；
(2) raw material for preparing step (1)：Granularity be 300~500nm fine silica powder, granularity be 100~ The fine silica powder and CaO-MgO-SiO of 200nm2Matter refractory fibre, weight percent as requested are added to horizontal stir It mixes in machine and is mixed, 15000 revs/min of blender rotating speed obtains mixed dry material after mixing；
(3) mixed dry material for obtaining step (2) is added in the mold of four-column hydraulic press, in the condition that pressure is 3.0MPa It is lower that mixed dry material is suppressed into molding adobe；After the completion of compacting, hydraulic press automatic demoulding takes out molding adobe, then in adobe The ready ultra-fine inorganic fibre of surface even application step (1) spray glue, the thickness of spraying is 0.3mm, after the completion of spraying Obtain molding adobe of the surface equipped with ultra-fine inorganic fibre spraying glue；
(4) the molding adobe that step (3) described surface is equipped with to ultra-fine inorganic fibre spraying glue is placed in dry kiln Dry 5h under the conditions of 110 ± 5 DEG C；It after the completion of drying, is sent into low-temperature tunnel kiln and keeps the temperature 1h under the conditions of 800~900 DEG C, keep the temperature After the completion, spraying glue-line burns mistake naturally, is cooled to room temperature to get to low-dimensional SiO of the present invention with kiln2High strength light quality guarantee Adiabator.
The size that molding prepared by the embodiment turns is 175mm × 140mm × 35mm, as shown in Figure 2.Fig. 2 is the present invention Product, it is seen that product lightweight, surface are regular, and tapping has slight clear and melodious sound that sintering state is presented, and intensity is high, can effectively prevent inhaling Damp dusting improves the using effect of product.
The product built by laying bricks or stones in certain cement plant to that air hose external skin temperatures are measured in triple air hose of cement kiln, the course of work is minimum Up to 90 DEG C, 210 DEG C of air hose external skin temperatures, have good heat insulation effect when far below traditional siliceous mullite brick as insulating layer.The production Product, using still not occurring any damage up to 4 years so far, do not occur the reduction of heat insulation effect in cement plant yet.
I.e. the present invention is prepared for heat insulation effect under conditions of recycling is using byproduct and using harmless Soluble Fiber The prominent and higher thermal insulation material of intensity；With good economic results in society.

Claims (7)

1. a kind of low-dimensional SiO2High-strength light heat-preserving material, which is characterized in that the thermal insulation material is contained by following weight percent The raw material of amount is prepared：
Granularity is the fine silica powder of 300~500nm：40~55%
Granularity is the fine silica powder of 100~200nm：30~40%
CaO-MgO-SiO2Matter refractory fibre：15~30%.
2. low-dimensional SiO according to claim 12High-strength light heat-preserving material, which is characterized in that the granularity is 300 It include following component in the fine silica powder that the fine silica powder and granularity of~500nm is 100~200nm：SiO2≥ 98.5%, C≤0.8%, Al2O3≤ 0.13%, MgO≤0.16%, CaO≤0.07%, Fe2O3≤ 0.01%, K2O≤ 0.33%.
3. low-dimensional SiO according to claim 12High-strength light heat-preserving material, which is characterized in that the CaO-MgO- SiO2The length of matter refractory fibre is 3~5mm；Wherein the mass percentage of CaO is the quality hundred of 30.0~35.0%, MgO It is 5.0~8.0%, SiO to divide content2Mass percentage be 57.0~65.0%.
4. a kind of claims 1 to 3 any one of them low-dimensional SiO2The preparation method of high-strength light heat-preserving material, feature It is, this approach includes the following steps：
(1) raw material needed for preparing：Granularity is the fine silica powder of 300~500nm, and granularity is the silica of 100~200nm Micro mist, CaO-MgO-SiO2Matter refractory fibre, ultra-fine inorganic fibre spray glue；
(2) raw material that the weight percent required according to claim 1 prepares step (1), granularity are the two of 300~500nm Ultrafine silica powder, the fine silica powder and CaO-MgO-SiO that granularity is 100~200nm2Matter refractory fibre is added to stirring It is mixed in machine, obtains mixture after mixing；
(3) mixture for obtaining step (2) is added in mold, by mixture pressure under conditions of pressure is 2.8~3.5MPa It is made for molding adobe；The adobe for then taking out compression moulding, in the ultra-fine inorganic that adobe surface even application step (1) prepares Fiber coating glue obtains the adobe that surface is equipped with spraying glue；
(4) adobe of step (3) the described surface equipped with spraying glue is placed in dry kiln and is dried, after the completion of dry；It send Enter and be burnt into low-temperature tunnel kiln, after firing, is cooled to room temperature to get to the low-dimensional SiO with kiln2High strength light quality guarantee Adiabator.
5. low-dimensional SiO according to claim 42The preparation method of high-strength light heat-preserving material, which is characterized in that step (2) when being mixed in blender described in, the rotating speed of blender is 10000-20000 revs/min.
6. low-dimensional SiO according to claim 42The preparation method of high-strength light heat-preserving material, which is characterized in that step (3) it is 0.2~0.5mm that the ultra-fine inorganic fibre described in, which sprays glue in the thickness of adobe surface spraying,.
7. low-dimensional SiO according to claim 42The preparation method of high-strength light heat-preserving material, which is characterized in that step (4) drying that is carried out in dry kiln of adobe that the surface is equipped with spraying glue is：Dry 5~7h under the conditions of 90~120 DEG C； Institute's low temperature states the firing carried out in tunnel oven：In dry kiln it is dry after, into low-temperature tunnel kiln at 800~900 DEG C Under the conditions of keep the temperature 0.5~1 hour.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111662089A (en) * 2020-07-05 2020-09-15 郑州瑞泰耐火科技有限公司 High-temperature-resistant self-sintered nano plate and preparation method thereof
CN113292228A (en) * 2021-06-09 2021-08-24 洛阳欧斯特建材有限公司 Heat insulation material for arch top of float glass kiln

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003055069A (en) * 2001-08-07 2003-02-26 Ngk Insulators Ltd Carbon ceramic composite body, conveyer roller for body to be plated and stirring shaft for molten aluminum
CN102040390A (en) * 2010-11-18 2011-05-04 郑州大学 SiO2 nano/micron powder composite low-dimension thermal insulation material and preparation method thereof
CN103848591A (en) * 2012-12-05 2014-06-11 佛山市顺德区恒铕材料科技有限公司 Chopped inorganic fiber-reinforced thermal insulation plate
CN105541313A (en) * 2015-12-28 2016-05-04 于海 Nano heat-insulating material and preparation method of nano heat-insulating board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003055069A (en) * 2001-08-07 2003-02-26 Ngk Insulators Ltd Carbon ceramic composite body, conveyer roller for body to be plated and stirring shaft for molten aluminum
CN102040390A (en) * 2010-11-18 2011-05-04 郑州大学 SiO2 nano/micron powder composite low-dimension thermal insulation material and preparation method thereof
CN103848591A (en) * 2012-12-05 2014-06-11 佛山市顺德区恒铕材料科技有限公司 Chopped inorganic fiber-reinforced thermal insulation plate
CN105541313A (en) * 2015-12-28 2016-05-04 于海 Nano heat-insulating material and preparation method of nano heat-insulating board

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
徐庭: "SiO2纳米微孔绝热材料的制备和性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 *
王玺堂等: "CaO-MgO-SiO2系生物可溶性陶瓷纤维的研究", 《武汉科技大学学报》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111662089A (en) * 2020-07-05 2020-09-15 郑州瑞泰耐火科技有限公司 High-temperature-resistant self-sintered nano plate and preparation method thereof
CN113292228A (en) * 2021-06-09 2021-08-24 洛阳欧斯特建材有限公司 Heat insulation material for arch top of float glass kiln

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