CN105218080A - A kind of high refractory fibre strengthens mullite lightweight refractory - Google Patents
A kind of high refractory fibre strengthens mullite lightweight refractory Download PDFInfo
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Abstract
The invention discloses the production method that a kind of high refractory fibre strengthens mullite lightweight refractory: using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO 28%, MgO 8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter; The preparation method of described modified materials matter is: according to parts by weight, and milling after being taken by following raw material mixes: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 18-20 part, trehalose 2-3 part, expanded graphite nanometer part 1.5-1.8 part; The raw materials melt mixed is got rid of the steps such as silk and obtains refractory fibre, then prepare fiber reinforcement mullite lightweight refractory.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to a kind of high refractory fibre and strengthen mullite lightweight refractory and preparation technology thereof.
Background technology
Traditional aluminium silicon series fiber more easily enters human body when producing and apply, and the fiber entering human body is difficult to dissolve, and may cause the cytopathy in human body.So can we need to study the fiber which kind of fiber easily sucks by human body and suck and be degraded by human body fast.
The complexity of fiber inspiration lung is relevant with the concentration of fiber in air and the geometrical dimension of fiber, and the fibre dust of high density causes the probability entering human body larger, and then fiber is larger at the probability of human lung's pathology; Many scholar's research of Ge great research institution show: can fiber be sucked by human body and depend on that the diameter of the length-to-diameter ratio of fiber and fiber is relevant, length-to-diameter ratio and diameter less, fiber more easily enters human body.The time length that fiber exists in human body is determined by the chemical stability of fiber, and chemical stability is better, and fiber is more not easy degraded, and the chemical composition of the chemical stability of fiber and fiber, configuration of surface are relevant with surface-area.Bio-soluble refractory fibre major part is made up of silicon-dioxide and other metals or nonmetal oxide, fibrous some alkaline earth metal oxides of middle interpolation, alkalimetal oxide and boron oxide etc. can improve the solvability of fiber, and when adding aluminum oxide, fibrolytic significantly reduces.The surface of fiber is larger, the area contacted with lung liquid is larger, the area lost by lung immersion is also larger, and then the speed that fiber is degraded in lung liquid is also larger, in addition, fiber surface in Synthesis and applications process can produce fine fisssure defect line, and defect can be etched further under the erosion of body fluid, the dissolving of accelerating fibers.
Tradition refractory fibre is easily sucked by human body in preparation and use procedure, and then may impact the health of human body, many experts and scholar are in order to address this problem, and they constantly seek new material, and bio-soluble refractory fibre has arisen at the historic moment in that moment.Since 20th century the nineties, along with people are to health, the pay attention to day by day of environmental protection, the development of solubility refractory fibre launches in worldwide, the development of bio-soluble ceramic fiber is very rapid, and the main component of currently marketed soluble fiber is CaO-MgO-SiO2 system, CaO-SiO2 system, MgO-SiO2 system etc.
In the process exploring bio-soluble ceramic fiber, a lot of national patent of all having applied for oneself in soluble ceramic fiber composition, China's research is in this respect also little.
Have Chinese patent 2012105683496 to be disclosed a kind of 750 degree ecological solubility environmental protection refractory fibres, it does not have crystallization, but resistance to elevated temperatures is limited, and finds in practice, and placement can start to occur aging after half a year, resistance to elevated temperatures declines further.
And prior art also have with aluminum oxide, quartz sand for main raw material, take Sodium dodecylbenzene sulfonate as whipping agent, have studied foaming agents content, aluminum silicate fiber content to the improvement of mullite lightweight refractory.
The present invention aims to provide a kind of high refractory fibre and strengthens mullite lightweight refractory and preparation technology thereof, it adopts solvability in the simulation lobe of the lung fine, dissolution rate is very fast, fire performance is very strong, and there is no the enhancing that the refractory fibre of crystallization carries out mullite lightweight refractory, surprisingly find the performance largely can improving mullite lightweight refractory.
Summary of the invention
The present invention is directed to shortcoming of the prior art, a kind of high refractory fibre is provided to strengthen mullite lightweight refractory and preparation technology thereof, it adopts solvability in the simulation lobe of the lung fine, dissolution rate is very fast, fire performance is very strong, and there is no the enhancing that the refractory fibre of crystallization carries out mullite lightweight refractory, surprisingly find the performance largely can improving mullite lightweight refractory.
Object of the present invention can be achieved through the following technical solutions:
A kind of high refractory fibre strengthens the production technique of mullite lightweight refractory:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 18-20 part, trehalose 2-3 part, expanded graphite nanometer part 1.5-1.8 part;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 680-720 DEG C of thermal treatment, eventually passes the obtained refractory fibre of cutting;
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 58.3-59.2 part, quartz sand 14.1-15.2 part, 1.5-1.8 part environmental protection refractory fibre, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.2-1.5 part SDBS whipping agent, 0.5 part of tripoly phosphate sodium STPP, 6-6.5 part dextrin continue to stir obtained mixing;
The pug made injects mould and pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 5-8 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
The present invention adopts standard Gamble solution simulated lung fluid to carry out the detection of Bc.The formula of typical Gamble solution is as shown in the table:
Getting rid of in a process, usual soluble ceramic fiber raw material melt has tendency towards devitrification in various degree, and this tendency towards devitrification is referred to as crystallization property.In the production of fiber, crystallization is definitely unallowed, and it will cause the fracture of fiber, and intensity reduces.Produce crystallization for avoiding getting rid of ceramic fiber in a process, mold temperature must higher than the recrystallization temperature of raw material.Measuring crystallization ceiling temperature is the key determining mold temperature.In the use procedure of soluble ceramic fiber, along with the increase of time and temperature, fiber occurs that crystallization may make filament contraction and destruction.
Glass is below its balance liquid liquidus temperature, and for crystallization phases, be in the steady state that is situated between, maximum system energy is higher, therefore the trend of oriented crystal transition.When glass generation crystallization changes, the change of system total energy is by the difference Δ G of glassy phase and crystalline phase two-phase free energy of chemistry, and the interfacial energy Uf that the crystalline phase of precipitation and glassy phase are formed and strain energy Us tri-part form.In the crystallization transition process of glass, Uf+Us=Δ G, therefore mainly considers the change of system free energy of chemistry.The nucleus formed in glass, the transition process of glassy phase and crystalline phase near interface atom is depended in its growth.The vibrational frequency of atom be v its cross interface from glassy phase and proceed to crystalline phase and need activation energy.
It is that v1=vexp [-E/ (RT)] formula, R is gas law constant, and T is thermodynamic temperature, and v is atomic vibration frequency that atom crosses from glassy phase the frequency that interface proceeds to crystalline phase.System free energy decline Δ G is caused due to the migration of atom.For reverse procedure, namely atom proceeds to glassy phase from crystalline phase needs to cross potential barrier (E+ Δ G), and jump frequency is that v2=vexp [(E+ Δ G)/(RT)] is so the clean jump frequency of atom from glassy phase to crystalline phase is v1-v2.If nucleating surface grows one deck atom, phase interface migration distance be all then nucleus along one-dimensional square to growth velocity:
U＝λ(v1-v2)＝λvexp(-E/(RT){1-exp[-ΔG/(RT)]}(1)
Make k0=v{1-exp [-Δ G/ (RT)] } (2)
Then formula (1) can be write as U=λ k0 [exp (-E/ (RT)], and E is devitrification of glass activation energy.K0 is commonly referred to as frequency factor, and is considered to have nothing to do with temperature T, and in fact this only has and just strictly sets up under isothermal conditions.For non-isothermal process, from formula (2), k0 and T is relevant, and the value of the k0 tried to achieve with diverse ways differs an order of magnitude sometimes.Only in certain temperature range, the rising of temperature causes v to increase cancelling out each other with the reduction of the free energy difference Δ G of glassy phase and crystalline phase just can being similar to during a part regarding constant as.
Under special process of the present invention, not there is crystallization.
The present inventor is surprised to find that, the specific formula of preparation, use specific production technique, Bc can be prepared good, fire performance is strong, the resistance to Bc refractory fibre deposited, further improving technique, intensity can be obtained large, lightweight fiber reinforcement mullite lightweight refractory.
Usefulness of the present invention is:
(1) fiber reinforcement refractory brick quality of the present invention is light, and void content is high, and intensity is large.
(2) fiber reinforcement refractory brick of the present invention adopts harmless tRecycled Fibers, and its environment protection health, meets the tendency of the day.
(3) fiber reinforcement refractory brick fire performance of the present invention is more outstanding.
Embodiment
embodiment 1:
High refractory fibre strengthens the production technique of mullite lightweight refractory:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 18 parts, trehalose 3 parts, expanded graphite nanometer part 1.5 parts;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 720 DEG C of thermal treatments, eventually pass the obtained refractory fibre of cutting;
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 59.2 parts, quartz sand 14.1 parts, 1.8 parts of environmental protection refractory fibres, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.2 parts of SDBS whipping agents, 0.5 part of tripoly phosphate sodium STPP, 6.5 parts of dextrin continue to stir obtained mixing;
The mould that the pug made injects 25mm × 25mm × 125mm pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 5 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
The performance of tRecycled Fibers:
Occur without crystallization.
In Gamble solution, detect the solvability of 72 hours after producing at once, detected result is:
Solvable, its constant of dissolution rate is: 385ng/cm
2h;
Continuous use can be high temperature resistant 1800 DEG C.
After accelerating to deposit half a year at 40 DEG C, it uses continuously and can resistance to elevated temperatures not find to reduce.
The detection perform that the high refractory fibre be prepared into strengthens mullite lightweight refractory is:
Unit weight: 0.6g/ cubic centimetre;
Void content: 89%
Compressive strength: 18Mbp;
Folding strength: 8Mbp.
embodiment 2:
High refractory fibre strengthens the production technique of mullite lightweight refractory:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 20 parts, trehalose 2 parts, expanded graphite nanometer part 1.8 parts;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 680 DEG C of thermal treatments, eventually pass the obtained refractory fibre of cutting.
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 58.3 parts, quartz sand 15.2 parts, 1.5 parts of environmental protection refractory fibres, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.5 parts of SDBS whipping agents, 0.5 part of tripoly phosphate sodium STPP, 6 parts of dextrin continue to stir obtained mixing;
The mould that the pug made injects 25mm × 25mm × 125mm pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 8 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
The performance of tRecycled Fibers:
Occur without crystallization.
In Gamble solution, detect the solvability of 72 hours after producing at once, detected result is:
Solvable, its constant of dissolution rate is: 320ng/cm
2h;
Continuous use can be high temperature resistant 2000 DEG C.
After accelerating to deposit half a year at 40 DEG C, it uses continuously and can resistance to elevated temperatures not find to reduce.
The detection perform that the high refractory fibre be prepared into strengthens mullite lightweight refractory is:
Unit weight: 0.5g/ cubic centimetre;
Void content: 95%
Compressive strength: 15Mbp;
Folding strength: 5Mbp.
embodiment 3:
High refractory fibre strengthens the production technique of mullite lightweight refractory:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 19 parts, trehalose 3 parts, expanded graphite nanometer part 1.6 parts;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 700 DEG C of thermal treatments, eventually pass the obtained refractory fibre of cutting.
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 59.0 parts, quartz sand 14.5 parts, 1.7 parts of environmental protection refractory fibres, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.4 parts of SDBS whipping agents, 0.5 part of tripoly phosphate sodium STPP, 6.3 parts of dextrin continue to stir obtained mixing;
The mould that the pug made injects 25mm × 25mm × 125mm pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 7 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
The performance of tRecycled Fibers:
Occur without crystallization.
In Gamble solution, detect the solvability of 72 hours after producing at once, detected result is:
Solvable, its constant of dissolution rate is: 350ng/cm
2h;
Continuous use can be high temperature resistant 1900 DEG C.
After accelerating to deposit half a year at 40 DEG C, it uses continuously and can resistance to elevated temperatures not find to reduce.
The detection perform that the high refractory fibre be prepared into strengthens mullite lightweight refractory is:
Unit weight: 0.6g/ cubic centimetre;
Void content: 93%
Compressive strength: 15Mbp;
Folding strength: 7Mbp.
embodiment 4:
High refractory fibre strengthens the production technique of mullite lightweight refractory:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 18 parts, trehalose 2 parts, expanded graphite nanometer part 1.7 parts;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 690 DEG C of thermal treatments, eventually pass the obtained refractory fibre of cutting.
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 58.7 parts, quartz sand 15.0 parts, 1.6 parts of environmental protection refractory fibres, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.3 parts of SDBS whipping agents, 0.5 part of tripoly phosphate sodium STPP, 6.1 parts of dextrin continue to stir obtained mixing;
The mould that the pug made injects 25mm × 25mm × 125mm pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 6 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
The performance of tRecycled Fibers:
Occur without crystallization.
In Gamble solution, detect the solvability of 72 hours after producing at once, detected result is:
Solvable, its constant of dissolution rate is: 378ng/cm
2h;
Continuous use can be high temperature resistant 1823 DEG C.
After accelerating to deposit half a year at 40 DEG C, it makes continuously
The detection perform that the high refractory fibre be prepared into strengthens mullite lightweight refractory is:
Unit weight: 0.5g/ cubic centimetre;
Void content: 91%
Compressive strength: 16Mbp;
Folding strength: 7Mbp.With can resistance to elevated temperatures not find to reduce.
embodiment 5:
High refractory fibre strengthens the production technique of mullite lightweight refractory:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 20 parts, trehalose 3 parts, expanded graphite nanometer part 1.5 parts;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 710 DEG C of thermal treatments, eventually pass the obtained refractory fibre of cutting.
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 58.1 parts, quartz sand 14.8 parts, 1.8 parts of environmental protection refractory fibres, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.2 parts of SDBS whipping agents, 0.5 part of tripoly phosphate sodium STPP, 6.4 parts of dextrin continue to stir obtained mixing;
The mould that the pug made injects 25mm × 25mm × 125mm pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 5 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
The performance of tRecycled Fibers:
Occur without crystallization.
In Gamble solution, detect the solvability of 72 hours after producing at once, detected result is:
Solvable, its constant of dissolution rate is: 341ng/cm
2h;
Continuous use can be high temperature resistant 1988 DEG C.
After accelerating to deposit half a year at 40 DEG C, it uses continuously and can resistance to elevated temperatures not find to reduce.
The detection perform that the high refractory fibre be prepared into strengthens mullite lightweight refractory is:
Unit weight: 0.6g/ cubic centimetre;
Void content: 94%
Compressive strength: 16Mbp;
Folding strength: 5Mbp.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1. high refractory fibre strengthens a production method for mullite lightweight refractory, it is characterized in that:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 18-20 part, trehalose 2-3 part, expanded graphite nanometer part 1.5-1.8 part;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 680-720 DEG C of thermal treatment, eventually passes the obtained refractory fibre of cutting;
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 58.3-59.2 part, quartz sand 14.1-15.2 part, 1.5-1.8 part environmental protection refractory fibre, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.2-1.5 part SDBS whipping agent, 0.5 part of tripoly phosphate sodium STPP, 6-6.5 part dextrin continue to stir obtained mixing;
The pug made injects mould and pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 5-8 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
2. method according to claim 1, is characterized in that:
(1) raw material of the high fire-resistant refractory fibre of environmental protection is equipped with:
Using wollastonite, quartz sand, talcum, flint clay as main raw material, Mass Control mark, wherein SiO
258%, CaO28%, MgO8%, residue 4% is modified materials matter, after main raw material and the mixing of modified materials matter;
The preparation method of described modified materials matter is:
According to parts by weight, mill after following raw material is taken and mix: by 4 parts of zinc oxide, Vanadium Pentoxide in FLAKES 18 parts, trehalose 3 parts, expanded graphite nanometer part 1.5 parts;
(2) environmental protection refractory fibre is prepared:
The raw material mixed is placed in resistance furnace, first through 300 DEG C of meltings, part material is now had to start to melt, now constant temperature keeps stirring 30 minutes, then 2200 DEG C of meltings are warming up to, now in formula, the expanded graphite nano powder of trace can not melt completely, but can distribute very even under high temperature system, and naked eyes are invisible;
Fused solution is by getting rid of a mode, cotton through condensers collection, the obtained cellucotton base needing thickness, and then through acupuncture, 720 DEG C of thermal treatments, eventually pass the obtained refractory fibre of cutting;
(3) fiber reinforcement mullite lightweight refractory is prepared:
According to weight ratio, take commercial alumina 59.2 parts, quartz sand 14.1 parts, 1.8 parts of environmental protection refractory fibres, above-mentioned raw materials is even at the common ball milling of vibromill, mixed material is added in stirrer suitable quantity of water to stir, and add 25 parts of Suzhou clays, pug that 1.2 parts of SDBS whipping agents, 0.5 part of tripoly phosphate sodium STPP, 6.5 parts of dextrin continue to stir obtained mixing;
The pug made injects mould and pours into wet base, and dried wet base is at electric kiln roasting, and calcining system is be raised to 1500 DEG C with the raising speed of 5 DEG C/min from room temperature, and after insulation 3h, furnace cooling both obtained finished product.
3. the high refractory fibre that the method described in claim 1-2 prepares strengthens mullite lightweight refractory.
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| CN106565251A (en) * | 2016-10-10 | 2017-04-19 | 长兴富峰高温材料有限公司 | High-strength lightweight refractory fiber and preparation method thereof |
| CN107385889A (en) * | 2017-06-30 | 2017-11-24 | 长兴泓矿炉料有限公司 | A kind of heat-insulated mullite fiber fire smothering blanket |
| CN113213959A (en) * | 2021-06-21 | 2021-08-06 | 中钢集团洛阳耐火材料研究院有限公司 | Light heat-preservation-function refractory material for aluminum processing fusion casting |
| CN116496079A (en) * | 2023-03-21 | 2023-07-28 | 河南竹林庆州耐火材料有限公司 | Preparation method of low-carbon production refined mullite corundum high-temperature material |
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| CN106220196A (en) * | 2016-07-22 | 2016-12-14 | 武汉科技大学 | A kind of fibrous ceramic insulation and preparation method thereof |
| CN106220196B (en) * | 2016-07-22 | 2018-10-26 | 武汉科技大学 | A kind of fibrous ceramic insulation and preparation method thereof |
| CN106396652A (en) * | 2016-08-30 | 2017-02-15 | 山东磊宝锆业科技股份有限公司 | Production method of mullite powder composite high aluminum fiber lightweight refractory plate |
| CN106565251A (en) * | 2016-10-10 | 2017-04-19 | 长兴富峰高温材料有限公司 | High-strength lightweight refractory fiber and preparation method thereof |
| CN106565251B (en) * | 2016-10-10 | 2020-05-19 | 诸暨市金桥实业有限公司 | High-strength light refractory fiber and preparation method thereof |
| CN107385889A (en) * | 2017-06-30 | 2017-11-24 | 长兴泓矿炉料有限公司 | A kind of heat-insulated mullite fiber fire smothering blanket |
| CN113213959A (en) * | 2021-06-21 | 2021-08-06 | 中钢集团洛阳耐火材料研究院有限公司 | Light heat-preservation-function refractory material for aluminum processing fusion casting |
| CN116496079A (en) * | 2023-03-21 | 2023-07-28 | 河南竹林庆州耐火材料有限公司 | Preparation method of low-carbon production refined mullite corundum high-temperature material |
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