CN102643098A - Dolomitic high-temperature ceramic matrix composite - Google Patents
Dolomitic high-temperature ceramic matrix composite Download PDFInfo
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- CN102643098A CN102643098A CN2012101446487A CN201210144648A CN102643098A CN 102643098 A CN102643098 A CN 102643098A CN 2012101446487 A CN2012101446487 A CN 2012101446487A CN 201210144648 A CN201210144648 A CN 201210144648A CN 102643098 A CN102643098 A CN 102643098A
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Abstract
The invention discloses a dolomitic high-temperature ceramic matrix composite and aims to provide a refractory raw material with high calcium oxide content, high hydration resistance under the condition of natural storage and high fire resistance temperature. The dolomitic high-temperature ceramic matrix composite is prepared by blending and sintering the following raw materials in weight percentage with a binding agent in weight ratio of 100:4: 38-59 percent of CaO, 25-35 percent of MgO, 10-15 percent of SiO2, 1-5 percent of Al2O3 and 2-7 percent of Fe2O3, wherein the binding agent is one of lignin solution, sodium silicate solution and aluminum sulfate solution. The preparation method for the dolomitic high-temperature ceramic matrix composite comprises the following steps of: crushing all the raw materials into corresponding fine powders of which the particle mean sizes are not greater than 0.088mm; then, evenly mixing the fine powders with the binding agent to obtain a mixture; performing mould pressing on the mixture at the pressure of 1134kg/cm<2> and then delivering into a sintering furnace of which the temperature is 1600-1800 DEG C; and calcining for 2-16 hours. The composite disclosed by the invention cannot be hydrated after being naturally stored for 360 days, and the refractoriness is higher than 1790 DEG C. The dolomitic high-temperature ceramic matrix composite is a raw material for manufacturing basic refractory products.
Description
Technical field
The present invention relates to a kind of raw material for refractory, relate in particular to a kind of rhombspar matter pyroceramic based composites.
Background technology:As everyone knows, quicklime is a kind of high temperature resistant raw material of making basic refractory, is again the good raw material that is used for desulfurization, dephosphorization in the Metal smelting.Because there is serious aquation tendency in quicklime self, is easy to aquation in links such as processing, storage and transportations, therefore utilizes the refractory products of its making when promoting the use of, to receive great restriction.At present; Employed quicklime all is (such as the rhombspar after the high-temperature calcination, magnesium calcium matrix material, magnesium calcium compound membrane material etc.) to occur with the form that contains calcium complexes in the refractory industry production; And that these contain calcium complexes self hydration resistance is limited; Utilize the fire resistive material product of its making must carry out WATER REPELLENT such as immersion oil, waxdip or vacuum packaging usually, the person does not scrap because of aquation easily; Both increase product cost, and brought very big trouble for again product stock, transportation and use.For this reason, how to improve a great problem that the hydration resistance that contains the quicklime refractory materials is a puzzlement refractory materials manufacturer always.
Summary of the invention:In order to overcome the defective that exists in the prior art; The present invention aims to provide a kind of rhombspar matter pyroceramic based composites, this matrix material and with the fire resistive material product of this material the surface carries out having the calcium oxide content height under the situation that preventing hydration handles, characteristics such as anti-hydratability is strong, refractory temperature height not carrying out.
To achieve these goals, the present invention adopts following technical scheme, and it is prepared sintering by following raw materials by weight percent and wedding agent by the weight ratio of 100:4 and forms: CaO 38～59%, MgO 25～35%, SiO
210～15%, Al
2O
31～5%, Fe
2O
32～7%, said wedding agent is that mass percent concentration is one of 1.2～1.3 lignin liquor, sodium silicate solution, alum liquor; Its making method is that said each raw material powder is broken into behind the fine powder of mean particle size≤0.088 ㎜ and the wedding agent mixing, with 1134 ㎏/㎝
2Pressure be molded into that to send into temperature behind the piece material be to calcine 2～16 hours in 1600～1800 ℃ the sintering oven.
In technique scheme, the weight percent of each raw material is preferably CaO 49%, MgO 30%, SiO
213%, Al
2O
33%, Fe
2O
35%; Preferred calcination temperature is that 1650～1750 ℃, calcination time are 6～10 hours; Further preferred calcination temperature is that 1700 ℃, calcination time are 8 hours.
Compare with prior art, not only calcium oxide content is high under the situation of not carrying out the surface waterproofing processing to adopt rhombspar matter pyroceramic based composites provided by the invention, and anti-hydratability is strong; Below be the anti-hydration test that matrix material provided by the invention is done:
1) matrix material of the present invention is broken into the particulate state that particle diameter is 3～5mm, flushing with clean water clean back oven dry; Take by weighing three parts respectively, every part of 100g puts into respectively and is numbered 1
#, 2
#, 3
#In the pallet;
2) above-mentioned three increment spares were put respectively 100 days, 365 days, 730 days naturally, then with clear water respectively to 1
#, 2
#, 3
#Exemplar is rinsed well, weighs after the oven dry:
| ? | 100 days | 365 days | 730 days | Weight change | Outward appearance |
| 1 # | 100g | ? | ? | 0 | No change |
| 2 # | ? | 100g | ? | 0 | No change |
| 3 # | ? | ? | 99.9g | -0.1g | No change |
Can find out from above-mentioned data, adopt rhombspar matter pyroceramic based composites provided by the invention under the situation of not carrying out the surface waterproofing processing, to have nature and deposit 360 days not remarkable advantages of aquation.Its composition of matrix material provided by the invention is more approaching with rhombspar, thing is similar with the thing of pottery, and its refractoriness is higher than 1790 ℃; Therefore the applicant is with its called after " rhombspar matter pyroceramic based composites ".
Embodiment:Embodiment below in conjunction with concrete is described further the present invention:
Embodiment 1
1) with CaO 38 ㎏, MgO 35 ㎏, SiO
215 ㎏, Al
2O
35 ㎏, Fe
2O
3It is the fine powder of≤0.088 ㎜ that 7 ㎏ pulverize separately become mean particle size;
2) wedding agent that adds 4 ㎏ behind above-mentioned each fine powder mixing is stirred, the mould of packing into is with 1134 ㎏/㎝
2The pressure compacting process the piece material;
3) above-mentioned block of material being sent into temperature is calcining 2 hours in 1600 ℃ the sintering oven, comes out of the stove after the cooling.
Embodiment 2
Each step is with embodiment 1, and wherein CaO is that 59 ㎏, MgO are 28 ㎏, SiO
2Be 10 ㎏, Al
2O
3Be 1 ㎏, Fe
2O
3Be 2 ㎏, calcining temperature is that 1800 ℃, calcination time are 16 hours.
Embodiment 3
Each step is with embodiment 1, and wherein CaO is that 48 ㎏, MgO are 25 ㎏, SiO
2Be 15 ㎏, Al
2O
3Be 5 ㎏, Fe
2O
3Be 7 ㎏, calcining temperature is that 1650 ℃, calcination time are 6 hours.
Embodiment 4
Each step is with embodiment 1, and wherein CaO is that 49 ㎏, MgO are 30 ㎏, SiO
2Be 13 ㎏, Al
2O
3Be 3 ㎏, Fe
2O
3Be 5 ㎏, calcining temperature is that 1750 ℃, calcination time are 10 hours.
Embodiment 5
Each step is with embodiment 4, and wherein calcining temperature is that 1700 ℃, calcination time are 8 hours.
Wedding agent among above-mentioned each embodiment is that mass percent concentration is one of 1.2～1.3 lignin liquor, sodium silicate solution, alum liquor.
Claims (4)
1. a rhombspar matter pyroceramic based composites is characterized in that preparing sintering by following raw materials by weight percent and wedding agent by the weight ratio of 100:4 forms: CaO 38～59%, MgO 25～35%, SiO
210～15%, Al
2O
31～5%, Fe
2O
32～7%, said wedding agent is that mass percent concentration is one of 1.2～1.3 lignin liquor, sodium silicate solution, alum liquor; Its making method is that said each raw material powder is broken into behind the fine powder of mean particle size≤0.088 ㎜ and the wedding agent mixing, with 1134 ㎏/㎝
2Pressure be molded into that to send into temperature behind the piece material be to calcine 2～16 hours in 1600～1800 ℃ the sintering oven.
2. rhombspar matter pyroceramic based composites according to claim 1 is characterized in that: the weight percent of each raw material is CaO 49%, MgO 30%, SiO
213%, Al
2O
33%, Fe
2O
35%.
3. rhombspar matter pyroceramic based composites according to claim 1 and 2, it is characterized in that: calcining temperature is 1650～1750 ℃, calcination time is 6～10 hours.
4. rhombspar matter pyroceramic based composites according to claim 1 and 2, it is characterized in that: calcining temperature is 1700 ℃, calcination time is 8 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101446487A CN102643098A (en) | 2012-05-11 | 2012-05-11 | Dolomitic high-temperature ceramic matrix composite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101446487A CN102643098A (en) | 2012-05-11 | 2012-05-11 | Dolomitic high-temperature ceramic matrix composite |
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| CN102643098A true CN102643098A (en) | 2012-08-22 |
Family
ID=46656218
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| CN2012101446487A Pending CN102643098A (en) | 2012-05-11 | 2012-05-11 | Dolomitic high-temperature ceramic matrix composite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI729513B (en) * | 2018-10-02 | 2021-06-01 | 日商黑崎播磨股份有限公司 | Thermal dry spraying material and thermal dry spraying construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215107A (en) * | 2007-12-30 | 2008-07-09 | 张广发 | Method for preparing fire-resistant hydration-proof dolomite grog |
| CN101691294A (en) * | 2009-10-01 | 2010-04-07 | 中钢集团洛阳耐火材料研究院有限公司 | Process for preparing hydration-resistance high-calcium magnesia-calcium sand |
| CN101717266A (en) * | 2009-12-02 | 2010-06-02 | 淄博鑫耐达耐火材料股份有限公司 | Hydrophobic calcium-based magnesium synthetic clinker |
-
2012
- 2012-05-11 CN CN2012101446487A patent/CN102643098A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215107A (en) * | 2007-12-30 | 2008-07-09 | 张广发 | Method for preparing fire-resistant hydration-proof dolomite grog |
| CN101691294A (en) * | 2009-10-01 | 2010-04-07 | 中钢集团洛阳耐火材料研究院有限公司 | Process for preparing hydration-resistance high-calcium magnesia-calcium sand |
| CN101717266A (en) * | 2009-12-02 | 2010-06-02 | 淄博鑫耐达耐火材料股份有限公司 | Hydrophobic calcium-based magnesium synthetic clinker |
Non-Patent Citations (2)
| Title |
|---|
| 宋鹏涛等: "白云石质煤矸石的烧结及其熟料的抗水化性", 《耐火材料》 * |
| 魏耀武等: "MgO-CaO系耐火材料的研究与应用", 《武汉科技大学学报（自然科学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI729513B (en) * | 2018-10-02 | 2021-06-01 | 日商黑崎播磨股份有限公司 | Thermal dry spraying material and thermal dry spraying construction method |
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Application publication date: 20120822 |