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CN109678537A - A kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material - Google Patents

A kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material Download PDF

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Publication number
CN109678537A
CN109678537A CN201910071951.0A CN201910071951A CN109678537A CN 109678537 A CN109678537 A CN 109678537A CN 201910071951 A CN201910071951 A CN 201910071951A CN 109678537 A CN109678537 A CN 109678537A
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mullite
powder
silicon carbide
screening
aggregate
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钱庆
吴占强
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JIANGSU GREATWALL KILN & FURNACE PROJECT Co Ltd
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JIANGSU GREATWALL KILN & FURNACE PROJECT Co Ltd
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Abstract

The invention discloses a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material, include the following steps: that mullite silicon carbide castable is prepared, based on composition component, in coarse aggregate: mullite 6%~13%, Zirconium oxide fibre 3%~3.5%, in middle aggregate: flint clay 8%~15%, silicon carbide 20%~25%, zircon 1%~1.5%, in fine aggregate: mullite 18%~27%, in bonding agent: magnesium silicate 10%~15%, phosphate 12%~27%, silicon powder 3%~5%, yttrium oxide 6%~8%, remaining is impurity;Under the premise of keeping the stability of Zirconium oxide fibre using yttrium oxide, so that Zirconium oxide fibre work is combined closely with the product converted under high temperature, the resist chemical and wear-resisting property of mullite fiber castable refractory are improved with this, the intracorporal temperature of vacuum chamber with the mullite fiber refractory casting bed of material, which is effectively ensured, to be reduced, achieve the effect that corrosion-resistant and high-temperature resistant with this, prolongs the service life.

Description

A kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material
Technical field
The invention belongs to mullite silicon carbide castable technical fields, and more specifically more particularly to a kind of high temperature resistant is anti- Corrode mullite silicon carbide cast preparation method for material.
Background technique
Material feeding is also known as castable refractory, is a kind of granular made of a certain amount of bonding agent and powdery material to be added refractory material Material has compared with high fluidity, and with the molding unshape refractory of pouring type, castable refractory refers to by fireproof refractory, knot The mixture of mixture and additive composition adds water (or liquid bonding agent) to reconcile into the pug of available casting construction, with other The difference of unshape refractory is there is certain condensation and firm time after castable refractory construction, therefore pour into It needs can to demould by the maintenance of certain time after type, baking can be put into using the natural curing of appropriate time later make With castable refractory simple production process, saving of labor's energy conservation, construction efficiency is high, high-quality, and can extemporaneous preparation or choosing as needed With the material haveing excellent performance, therefore, castable refractory is that one kind that dosage is larger, applied widely in brickwork engineering is unsetting Fire proofed wood.
Original mullite silicon carbide castable generally carries out high temperature melting note using rotary kiln in preparation of the production process, Due to being used for a long time, multiple load increases rotary kiln, reduces to fire resistance, the corrosion resistance of material, being used for a long time influences benefit, long Phase is also possible that phenomena such as peeling, chip off-falling, crackle, reduces the service life short, causes to waste.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of high-temperature-resistant and anti-corrosion proposed is not Carry out stone silicon carbide cast preparation method for material.
To achieve the above object, the invention provides the following technical scheme: a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide pours Material feeding preparation method, includes the following steps:
S1, mullite silicon carbide castable are prepared, based on composition component, in coarse aggregate: mullite 6%~13%, Zirconium oxide fibre 3%~3.5%, in middle aggregate: flint clay 8%~15%, silicon carbide 20%~25%, zircon 1%~1.5%, in fine aggregate: mullite 18%~27%, in bonding agent: magnesium silicate 10%~15%, phosphate 12%~27%, silicon powder 3%~5%, yttrium oxide 6%~8%, Remaining is impurity;
S2, mullite is crushed by broken, screening, again, is screened again, obtaining Mullite Powder;
S3, Mullite Powder and Zirconium oxide fibre particle that S2 step is produced are sufficiently mixed in proportion, obtain coarse aggregate;
S4, by flint clay by being crushed, screening, pulverizing, screening again, obtain flint clay powder;
S5, by silicon carbide by being crushed, screening, pulverizing, screening again, obtain silicon carbide powder;
S6, by zircon by being crushed, screening, pulverizing, screening again, obtain zircon powder;
S6, flint clay powder prepared by S4 step, S5 step and S6 step, silicon carbide powder, zircon powder are abundant in proportion Mixing, obtains middle aggregate;
S7, by mullite by being crushed, screening, pulverizing, screening again, obtain fine aggregate;
S8, coarse aggregate, middle aggregate, fine aggregate are sufficiently mixed in proportion, obtain mixture;
S9, the bonding agent that the mixture that S8 step is prepared is prepared with S9 step is sufficiently mixed in proportion, is obtained not Carry out mineral wool castable refractory.
Preferably, the particle diameter of the coarse aggregate is 3mm~4mm, and the particle diameter of the middle aggregate is 1mm~2mm, The particle diameter of the fine aggregate is 0.01mm~0.5mm.
Preferably, the particle diameter of the Mullite Powder is 3mm~4mm.
Preferably, the particle diameter of the flint clay powder, the silicon carbide powder and the zircon powder be 1mm~ 2mm。
Preferably, the bonding agent using magnesium silicate, phosphate, silicon powder and yttrium oxide mixture, the magnesium silicate, The ratio of the phosphate, the silicon powder and the yttrium oxide is 1:1:3:2.
A kind of technical effect and advantage of the invention: high-temperature-resistant and anti-corrosion mullite silicon carbide castable provided by the invention Preparation method, compared with traditional preparation process, step of the present invention is simple, easy to operate, improves mullite silicon carbide castable Preparation efficiency, safety and stability is applied widely, becomes zirconium oxide and silica, high grade bauxite using zircon pyrolytic In aluminium oxide reacted with magnesia and carry out calcining generate spinelle, simultaneous oxidation zirconium can make up microcrack generation fine fisssure Seam, in addition under the premise of keeping the stability of Zirconium oxide fibre using yttrium oxide, so that under Zirconium oxide fibre work and high temperature The product of conversion is combined closely, and the resist chemical and wear-resisting property of mullite fiber castable refractory is improved with this, effectively Guarantee that the intracorporal temperature of vacuum chamber with the mullite fiber refractory casting bed of material will not reduce, corrosion-resistant resistance to height is reached with this The effect of temperature, prolongs the service life.
Detailed description of the invention
Fig. 1 is the performance parameters table of embodiment.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
Embodiment 1
Referring to Fig. 1, a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material, includes the following steps:
S1, mullite silicon carbide castable are prepared, based on composition component, in coarse aggregate: mullite 10%, Zirconium oxide fibre 3.3%, In middle aggregate: flint clay 12%, silicon carbide 23%, zircon 1.3%, in fine aggregate: mullite 24%, in bonding agent: magnesium silicate 13%, Phosphate 23%, silicon powder 4%, yttrium oxide 7%, remaining is impurity;
S2, mullite is crushed by broken, screening, again, is screened again, obtaining Mullite Powder;
S3, Mullite Powder and Zirconium oxide fibre particle that S2 step is produced are sufficiently mixed in proportion, obtain coarse aggregate;
S4, by flint clay by being crushed, screening, pulverizing, screening again, obtain flint clay powder;
S5, by silicon carbide by being crushed, screening, pulverizing, screening again, obtain silicon carbide powder;
S6, by zircon by being crushed, screening, pulverizing, screening again, obtain zircon powder;
S6, flint clay powder prepared by S4 step, S5 step and S6 step, silicon carbide powder, zircon powder are abundant in proportion Mixing, obtains middle aggregate;
S7, by mullite by being crushed, screening, pulverizing, screening again, obtain fine aggregate;
S8, coarse aggregate, middle aggregate, fine aggregate are sufficiently mixed in proportion, obtain mixture;
S9, the bonding agent that the mixture that S8 step is prepared is prepared with S9 step is sufficiently mixed in proportion, is obtained not Carry out mineral wool castable refractory.
Specifically, the particle diameter of the coarse aggregate is 3mm~4mm, the particle diameter of the middle aggregate is 1mm~2mm, The particle diameter of the fine aggregate is 0.01mm~0.5mm.
Specifically, the particle diameter of the Mullite Powder is 3mm~4mm.
Specifically, the particle diameter of the flint clay powder, the silicon carbide powder and the zircon powder be 1mm~ 2mm。
Specifically, the bonding agent using magnesium silicate, phosphate, silicon powder and yttrium oxide mixture, the magnesium silicate, The ratio of the phosphate, the silicon powder and the yttrium oxide is 1:1:3:2.
Embodiment 2
Referring to Fig. 1, a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material, includes the following steps:
S1, mullite silicon carbide castable are prepared, based on composition component, in coarse aggregate: mullite 6%, Zirconium oxide fibre 3%, in In aggregate: flint clay 8%, silicon carbide 20%, zircon 1%, in fine aggregate: mullite 18%, in bonding agent: magnesium silicate 13%, phosphate 20%, silicon powder 3%, yttrium oxide 6%, remaining is impurity;
S2, mullite is crushed by broken, screening, again, is screened again, obtaining Mullite Powder;
S3, Mullite Powder and Zirconium oxide fibre particle that S2 step is produced are sufficiently mixed in proportion, obtain coarse aggregate;
S4, by flint clay by being crushed, screening, pulverizing, screening again, obtain flint clay powder;
S5, by silicon carbide by being crushed, screening, pulverizing, screening again, obtain silicon carbide powder;
S6, by zircon by being crushed, screening, pulverizing, screening again, obtain zircon powder;
S6, flint clay powder prepared by S4 step, S5 step and S6 step, silicon carbide powder, zircon powder are abundant in proportion Mixing, obtains middle aggregate;
S7, by mullite by being crushed, screening, pulverizing, screening again, obtain fine aggregate;
S8, coarse aggregate, middle aggregate, fine aggregate are sufficiently mixed in proportion, obtain mixture;
S9, the bonding agent that the mixture that S8 step is prepared is prepared with S9 step is sufficiently mixed in proportion, is obtained not Carry out mineral wool castable refractory.
Specifically, the particle diameter of the coarse aggregate is 3mm~4mm, the particle diameter of the middle aggregate is 1mm~2mm, The particle diameter of the fine aggregate is 0.01mm~0.5mm.
Specifically, the particle diameter of the Mullite Powder is 3mm~4mm.
Specifically, the particle diameter of the flint clay powder, the silicon carbide powder and the zircon powder be 1mm~ 2mm。
Specifically, the bonding agent using magnesium silicate, phosphate, silicon powder and yttrium oxide mixture, the magnesium silicate, The ratio of the phosphate, the silicon powder and the yttrium oxide is 1:1:3:2.
Embodiment 3
Referring to Fig. 1, a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material, includes the following steps:
S1, mullite silicon carbide castable are prepared, based on composition component, in coarse aggregate: mullite 8%, Zirconium oxide fibre 3.5%, In middle aggregate: flint clay 12%, silicon carbide 20%, zircon 1.5%, in fine aggregate: mullite 20%, in bonding agent: magnesium silicate 10%, Phosphate 12%, silicon powder 5%, yttrium oxide 8%, remaining is impurity;
S2, mullite is crushed by broken, screening, again, is screened again, obtaining Mullite Powder;
S3, Mullite Powder and Zirconium oxide fibre particle that S2 step is produced are sufficiently mixed in proportion, obtain coarse aggregate;
S4, by flint clay by being crushed, screening, pulverizing, screening again, obtain flint clay powder;
S5, by silicon carbide by being crushed, screening, pulverizing, screening again, obtain silicon carbide powder;
S6, by zircon by being crushed, screening, pulverizing, screening again, obtain zircon powder;
S6, flint clay powder prepared by S4 step, S5 step and S6 step, silicon carbide powder, zircon powder are abundant in proportion Mixing, obtains middle aggregate;
S7, by mullite by being crushed, screening, pulverizing, screening again, obtain fine aggregate;
S8, coarse aggregate, middle aggregate, fine aggregate are sufficiently mixed in proportion, obtain mixture;
S9, the bonding agent that the mixture that S8 step is prepared is prepared with S9 step is sufficiently mixed in proportion, is obtained not Carry out mineral wool castable refractory.
Specifically, the particle diameter of the coarse aggregate is 3mm~4mm, the particle diameter of the middle aggregate is 1mm~2mm, The particle diameter of the fine aggregate is 0.01mm~0.5mm.
Specifically, the particle diameter of the Mullite Powder is 3mm~4mm.
Specifically, the particle diameter of the flint clay powder, the silicon carbide powder and the zircon powder be 1mm~ 2mm。
Specifically, the bonding agent using magnesium silicate, phosphate, silicon powder and yttrium oxide mixture, the magnesium silicate, The ratio of the phosphate, the silicon powder and the yttrium oxide is 1:1:3:2.
In summary: a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material provided by the invention, with biography The preparation process of system compares, and step of the present invention is simple, easy to operate, improves the preparation efficiency of mullite silicon carbide castable, Safety and stability, it is applied widely, become zirconium oxide and silica using zircon pyrolytic, the aluminium oxide in high grade bauxite with Magnesia, which reacts and carries out calcining, generates spinelle, and simultaneous oxidation zirconium can make up the microcrack of microcrack generation, in addition in benefit Under the premise of the stability for keeping Zirconium oxide fibre with yttrium oxide, so that Zirconium oxide fibre work and the product converted under high temperature are tight Close combination improves the resist chemical and wear-resisting property of mullite fiber castable refractory with this, guarantees revolution kiln hood Outside wall temperature is lower than 50 DEG C under normal temperature state, and it is intracorporal that the vacuum chamber with the mullite fiber refractory casting bed of material is effectively ensured Temperature will not reduce, and achieve the effect that corrosion-resistant and high-temperature resistant with this, prolong the service life.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects, Above in the description of exemplary embodiment of the present invention, however, the method for the disclosure should not be construed to reflect following meaning Figure: i.e. the claimed invention is required than feature more features expressly recited in each claim.More precisely Say that as reflected in the following claims, inventive aspect is the institute less than single embodiment disclosed above in ground There is feature.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in the specific embodiment, wherein each The claims themselves are regarded as separate embodiments of the invention.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (5)

1. a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material, characterized by the following steps:
S1, mullite silicon carbide castable are prepared, and by mass percentage include: in coarse aggregate: mullite 6%~13%, oxidation Zirconium fiber 3%~3.5%, in middle aggregate: flint clay 8%~15%, silicon carbide 20%~25%, zircon 1%~1.5%, in fine aggregate: not Carry out stone 18%~27%, in bonding agent: magnesium silicate 10%~15%, phosphate 12%~27%, silicon powder 3%~5%, yttrium oxide 6%~ 8%, remaining is impurity;
S2, mullite is crushed by broken, screening, again, is screened again, obtaining Mullite Powder;
S3, Mullite Powder and Zirconium oxide fibre particle that S2 step is produced are sufficiently mixed in proportion, obtain coarse aggregate;
S4, by flint clay by being crushed, screening, pulverizing, screening again, obtain flint clay powder;
S5, by silicon carbide by being crushed, screening, pulverizing, screening again, obtain silicon carbide powder;
S6, by zircon by being crushed, screening, pulverizing, screening again, obtain zircon powder;
S6, flint clay powder prepared by S4 step, S5 step and S6 step, silicon carbide powder, zircon powder are abundant in proportion Mixing, obtains middle aggregate;
S7, by mullite by being crushed, screening, pulverizing, screening again, obtain fine aggregate;
S8, coarse aggregate, middle aggregate, fine aggregate are sufficiently mixed in proportion, obtain mixture;
S9, the bonding agent that the mixture that S8 step is prepared is prepared with S9 step is sufficiently mixed in proportion, is obtained not Carry out mineral wool castable refractory.
2. a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material according to claim 1, feature exist In: the particle diameter of the coarse aggregate is 3mm~4mm, and the particle diameter of the middle aggregate is 1mm~2mm, the fine aggregate Particle diameter is 0.01mm~0.5mm.
3. a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material according to claim 1, feature exist In: the particle diameter of the Mullite Powder is 3mm~4mm.
4. a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material according to claim 1, feature exist In: the particle diameter of the flint clay powder, the silicon carbide powder and the zircon powder is 1mm~2mm.
5. a kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material according to claim 1, feature exist In: the bonding agent using magnesium silicate, phosphate, silicon powder and yttrium oxide mixture, the magnesium silicate, the phosphate, The ratio of the silicon powder and the yttrium oxide is 1:1:3:2.
CN201910071951.0A 2019-01-25 2019-01-25 A kind of high-temperature-resistant and anti-corrosion mullite silicon carbide cast preparation method for material Pending CN109678537A (en)

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CN110981511A (en) * 2019-12-20 2020-04-10 湖南太子新材料科技有限公司 High-temperature-corrosion-resistant sagger and preparation method thereof
CN112608160A (en) * 2020-12-31 2021-04-06 长兴兴鹰新型耐火建材有限公司 High-strength wear-resistant castable special for cement kiln gate

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CN103553688A (en) * 2013-11-09 2014-02-05 宁夏天纵泓光余热发电技术有限公司 High-strength wear-resistant and fireproof pouring material
CN104311066A (en) * 2014-10-09 2015-01-28 宁夏天纵泓光余热发电技术有限公司 Wear-resisting thermal-insulating refractory castable material
CN104311056A (en) * 2014-10-08 2015-01-28 宁夏天纵泓光余热发电技术有限公司 Mullite fiber refractory casting material

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CN103553688A (en) * 2013-11-09 2014-02-05 宁夏天纵泓光余热发电技术有限公司 High-strength wear-resistant and fireproof pouring material
CN104311056A (en) * 2014-10-08 2015-01-28 宁夏天纵泓光余热发电技术有限公司 Mullite fiber refractory casting material
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CN110981511A (en) * 2019-12-20 2020-04-10 湖南太子新材料科技有限公司 High-temperature-corrosion-resistant sagger and preparation method thereof
CN112608160A (en) * 2020-12-31 2021-04-06 长兴兴鹰新型耐火建材有限公司 High-strength wear-resistant castable special for cement kiln gate

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