CN106316430A - 一种合成镁橄榄石浇注料及其制备方法 - Google Patents
一种合成镁橄榄石浇注料及其制备方法 Download PDFInfo
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- CN106316430A CN106316430A CN201610698412.6A CN201610698412A CN106316430A CN 106316430 A CN106316430 A CN 106316430A CN 201610698412 A CN201610698412 A CN 201610698412A CN 106316430 A CN106316430 A CN 106316430A
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- forsterite
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- 229910052839 forsterite Inorganic materials 0.000 title claims abstract description 64
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000000843 powder Substances 0.000 claims abstract description 51
- 239000004576 sand Substances 0.000 claims abstract description 26
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 21
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 19
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 19
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 19
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 17
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 9
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 8
- 239000005011 phenolic resin Substances 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims description 25
- 230000015572 biosynthetic process Effects 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 24
- 238000003786 synthesis reaction Methods 0.000 claims description 24
- 238000000465 moulding Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 9
- 239000007767 bonding agent Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 229960004011 methenamine Drugs 0.000 claims description 7
- 239000011863 silicon-based powder Substances 0.000 claims description 7
- 239000011812 mixed powder Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims description 6
- 229910001051 Magnalium Inorganic materials 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 239000001095 magnesium carbonate Substances 0.000 claims description 4
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 4
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 2
- 229910052727 yttrium Inorganic materials 0.000 claims description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims 1
- 229910052761 rare earth metal Inorganic materials 0.000 claims 1
- 150000002910 rare earth metals Chemical group 0.000 claims 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims 1
- 238000005829 trimerization reaction Methods 0.000 claims 1
- 239000003643 water by type Substances 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 239000011819 refractory material Substances 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000004568 cement Substances 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- HIGRAKVNKLCVCA-UHFFFAOYSA-N alumine Chemical compound C1=CC=[Al]C=C1 HIGRAKVNKLCVCA-UHFFFAOYSA-N 0.000 description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000011651 chromium Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 235000019832 sodium triphosphate Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000006263 metalation reaction Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 229910017970 MgO-SiO2 Inorganic materials 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/20—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in magnesium oxide, e.g. forsterite
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明属于冶金、有色、玻璃、水泥窑用高级耐火材料及其制备技术领域，具体涉及一种合成镁橄榄石浇注料及其制备方法。合成镁橄榄石浇注料，其特征在于,包括骨料和粉料，所述的骨料粒度为2.5‑16目，其原料组成按重量份数配比如下：合成烧结镁橄榄石砂(MgO≥60%)85‑95份；所述的粉料粒度为300‑350目，其原料组成按重量份数配比如下：硅微粉（SiO2≥92%）3‑6份、金属镁粉3‑5份、金属硅粉3‑5份、酚醛树脂1‑3份、乌洛托品0.5‑0.8份、烧结剂 0.3‑0.5份、减水剂0.01‑0.02 份、结合剂3‑7份。该合成镁橄榄石浇注料纯度高、强度高、高温热震稳定性好、耐腐蚀性强且无有害气体排放、符合绿色耐材标准。
Description
技术领域
本发明属于冶金、有色、玻璃、水泥窑用高级耐火材料及其制备技术领域，具体涉及一种合成镁橄榄石浇注料及其制备方法。
背景技术
耐火浇注料是一种采用浇注方式成型的不定形耐火材料，由粒状或粉状的耐火物料，加入一定量的结合剂和水分共同组成，具有较高的流动性。我国高铝矾土、菱镁矿和石墨等耐火原料资源丰富，在世界耐火材料市场中占有举足轻重的地位，也是我国耐火材料工业发展的基础。高铝矾土经不同温度煅烧加工，可形成不同品级的产品，其中高铝矾土熟料是生产Al2O3-SiO2系耐火材料的重要原料。
目前，中间包包盖及挡渣堰板挡渣坝，工作衬、座砖等普遍使用高铝矾土浇注料，高铝矾土浇注料仍存在不足：（1）对钢水质量和环境的影响十分严重；（2）特殊钢、有色冶炼、特种玻璃、水泥窑寿命短，碱性侵蚀；（3）综合成本高；（4）与同类国际产品领先水平有差距；（5）含铬耐火材料在使用后，其残渣中含有强氧化性的六价铬，会对环境造成污染。如何降低成本，开发高效、使用寿命长的耐火材料，一直是耐火材料行业亟待解决的问题。
发明内容
针对现有技术存在的问题，本发明的目的在于提供一种合成镁橄榄石浇注料及制备方法，该合成镁橄榄石浇注料纯度高、强度高、高温热震稳定性好、耐腐蚀性强且无有害气体排放、符合绿色耐材标准；该制备方法简单、成本低、无碳无铬排放、无污染，具有实际应用性。
为了实现上述目的，本发明提供一种合成镁橄榄石浇注料，包括骨料和粉料，所述骨料为合成烧结镁橄榄石砂(MgO≥60%) 85-95份，粒度为2.5-16目；所述的粉料粒度为300-350目，原料组成按重量份数配比如下：硅微粉（SiO2≥92%）3-6份、金属镁粉3-5份、金属硅粉3-5份、酚醛树脂1-3份、乌洛托品0.5-0.8份、烧结剂0.3-0.5份、减水剂0.01-0.02份、结合剂3-7份。
所述的烧结剂为稀土氧化物。
所述的稀土氧化物为氧化钇、氧化锶或氧化铈。
所述的结合剂为硅溶胶粉（SiO2≥30%）和纳米镁铝溶胶粉。
所述的减水剂为三聚磷酸钠和/或六偏磷酸钠。
所述的合成烧结镁橄榄石砂的制备方法，步骤如下。
（1）按重量分数秤取轻烧氧化镁粉（MgO≥92%，粒度20-40目）70%与石英砂粉（SiO2≥98% Fe2O2≤1%，粒度20-40目）30%，加入球磨机（Ф1200×3000）中进行球磨，球磨转速32r/min，球磨时间2h，出料粒度为90-200目。
（2）将球磨过的混合粉加入矿粉压球机中，主机转数为13r/min,压球成型即得混合粉球；再将成型的混合粉球放入干燥窑进行干燥，干燥温度为90℃-120℃，干燥时间12小时。
（3）将干燥后的混合粉送入1700℃-1750℃的竖窑中烧制7-8小时后，即得合成烧结镁橄榄石砂。
所述的合成镁橄榄石浇注料的制备方法，步骤如下。
（1）按重量份数秤取合成烧结镁橄榄石砂放入破碎机中进行破碎，破碎之后加入球磨机中进行粉碎，粉碎之后再用振动筛筛出粒度为2.5-16目的骨料。
（2）按重量份数秤取硅微粉，金属镁粉、金属硅粉、酚醛树脂、乌洛托品、结合剂、烧结剂和减水剂，放入容器中，混合配置成粉料，粉料粒度为300-350目。
（3）混料：将称量好的骨料和配制的粉料加入泥料混炼机中，再加入重量份数为5-7份的水混合搅拌，搅拌转数为25r/min,搅拌时间 10-15分钟。
（4）成型：将搅拌好的混料浇包装编织袋25-50公斤，常温下自然养护，养护时间24小时。
（5）干燥：将成型的浇注料放入干燥器进行干燥，干燥温度90℃-150℃，干燥时间24小时。
（6）使用：使用时温度为1500-1550℃，可用于中间包包盖整体浇注。
本发明的有益效果。
（1）本发明合成镁橄榄石浇注料是首例采用稀土氧化物改性合成镁橄榄石制备合成镁橄榄石浇注料，各项性能指标优良，其中MgO-SiO2的总含量＞85%（美国镁橄榄石浇注料性能标准中的MgO-SiO2含量在77%左右）；MgO含量＞55%，SiO2含量＞25%，体积密度均大于2.5g/cm3（美国镁橄榄石浇注料性能标准中的体积密度为1.70 g/cm3）；耐压强度不小于20Mpa，抗折强度为不下于3Mpa（美国镁橄榄石浇注料性能标准中的抗折强度在2.4-2.7Mpa之间）；本发明1000℃下热膨胀系数在1.1%-1.5%之间，由此说明本发明的合成镁橄榄石浇注料纯度高、强度高、高温热震稳定性好、气孔率小，收缩率低，抗渣侵蚀性好，在高温下具有良好的机械性能，化学稳定性高，耐碱性腐蚀，且抗熔融金属和抗氧化能力强。
（2）国内外使用天然镁橄榄石作为原料，而天然镁橄榄石Fe2O3含量在5-10％，而本发明合成的烧结镁橄榄石砂原料为Fe2O3＜1％的高纯原料，大幅度提高了原料的高温性能。
（3）在炼钢工业使用条件下，其使用寿命不低于高铝矾土浇注料的效果；在特殊钢处理钢使用条件下，其使用寿命比含高铝矾土浇注料效果更好；与传统高铝矾土浇注料相比，配料中不加入含铬的原料，不污染环境，工人工作条件大为改善；在冶金、玻璃及水泥窑应用中无有害气体排放绿色环保，解决了碳及铬污染环境的环保难题。
（4）天然镁橄榄石作为原料不但性能差，寿命短，而且价格贵，本发明采用轻烧氧化镁粉和石英砂粉合成烧结镁橄榄石砂作为原料使镁橄榄石浇注料制备成本大大降低；本发明成功替代高铝矾土浇注料在冶金中间包包盖、挡渣堰板挡渣坝、工作衬、座砖等全面推广应用，可用于中间包包盖整体浇注，在特殊钢超低碳钢中间包包内衬中的应用解决了碱性侵蚀问题。
附图说明
图1为合成烧结镁橄榄石砂的X-射线粉末衍射图。
图2为合成烧结镁橄榄石砂的扫描电镜图。
具体实施方式
下面结合具体的实施例对本发明作进一步的说明。
实施例1。
合成烧结镁橄榄石砂的制备方法如下。
按重量分数秤取轻烧氧化镁粉（MgO≥92%，粒度20-40目）70%与石英砂粉（SiO2≥98%，Fe2O2≤1%，粒度20-40目）30%，加入球磨机（Ф1200×3000）中进行球磨，球磨转速32r/min，球磨时间2h，出料粒度为90-200目；将球磨过混合粉（粒度90-200目）加入矿粉压球机中，主机转数为13r/min,压球成型，再将成型的混合粉球放入干燥窑进行干燥，干燥温度为90℃-120℃，干燥时间12小时；将干燥后的混合粉球送入1700℃-1750℃的竖窑中烧制7-8小时后即得合成烧结镁橄榄石砂。
如图1所示，合成烧结镁橄榄石砂的X-射线粉末衍射图，结果显示：合成烧结镁橄榄石相具有特征衍射峰，橄榄石相大于95%。利用辽宁科技大学场发射高分辨率扫描电镜进行能谱的定量分析得出合成烧结镁橄榄石砂MgO含量62.91%，SiO2含量28.99%，Fe2O3含量0.95%，CaO含量3.20%，AL2O3含量3.95%。
如图2所示，合成烧结镁橄榄石砂抛光的扫描电镜图（500倍），结果显示：均匀分部5-20μm以下的封闭气孔，晶体发育10-80μm 左右，说明合成烧结镁橄榄石相反应完全。
合成镁橄榄石浇注料的原料按如下重量份数配制。
称取合成烧结镁橄榄石砂（MgO含量62.91%，SiO2含量28.99%，Fe2O3含量0.95%，CaO含量3.20%，AL2O3含量3.95%）94份放入破碎机中进行破碎，破碎之后加入球磨机中进行粉碎，粉碎之后再用振动筛筛出粒度为2.5-16目的骨料。
称取硅微粉（SiO2含量92.09%，Al2O3含量0.05%，Fe2O3含量3.65%，MgO含量2.43%，CaO含量1.12%，NaO含量0.66%，粒度300-350目）3份，金属镁粉4份（粒度300-350目）、金属硅粉4份（粒度300-350目）、酚醛树脂2份（粒度300-350目）、乌洛托品0.6份（粒度300-350目）、纳米镁铝溶胶粉3份（粒度300-350目），硅溶胶粉（SiO2含量30%，粒度300-350目）4份，氧化钇0.4份和三聚磷酸钠0.02份，混合配置成粉料。
合成镁橄榄石浇注料的原料制备方法如下。
（1）混料：将称量好的骨料合成烧结镁橄榄石砂和配制的粉料加入泥料混炼机中，再加入水按重量份数为7份混合搅拌，搅拌转数25r/min，搅拌时间10-15分钟。
（2）成型：将搅拌好的混料浇包装编织袋25-50公斤，常温下自然养护24小时。
（3）干燥：将成型的浇注料放入干燥器进行干燥，干燥温度90℃-150℃，干燥时间24小时既得成品。
（4）使用：使用时现场浇注成型，使用温度为1500-1550℃，可用于中间包包盖整体浇注。
实施例2。
合成烧结镁橄榄石砂的制备方法如实施例1。
合成镁橄榄石浇注料的原料按如下重量份数配制。
称取合成烧结镁橄榄石砂（MgO含量62.91%，SiO2含量28.99%，Fe2O3含量0.95%，CaO含量3.20%，AL2O3含量3.95%）92份放入破碎机中进行破碎，破碎之后加入球磨机中进行粉碎，粉碎之后再用振动筛筛出粒度为2.5-16目的骨料。
称取硅微粉（SiO2含量92.09%，Al2O3含量0.05%，Fe2O3含量3.65%，MgO含量2.43%，CaO含量1.12%，NaO含量0.66%，粒度300-350目）5份，金属镁粉4份（粒度300-350目）、金属硅粉4份（粒度300-350目）、酚醛树脂2份（粒度300-350目）、乌洛托品0.6份（粒度300-350目）、纳米镁铝溶胶粉3份，硅溶胶粉（SiO2含量30%，粒度300-350目）4份，氧化锶0.4份和六偏磷酸钠0.02份，混合配置成粉料。
其制备方法如下。
（1）混料：将称量好的骨料合成烧结镁橄榄石砂和配制的粉料加入泥料混炼机中，再加入水按重量份数为6份混合搅拌，搅拌转数25r/min，搅拌时间10-15分钟。
（2）成型：将搅拌好的混料浇包装编织袋25-50公斤，常温下自然养护24小时。
（3）干燥：将成型的浇注料放入干燥器进行干燥，干燥温度90℃-150℃，干燥时间24小时既得成品。
（4）使用：使用时现场浇注成型，使用温度为1500-1550℃，可用于中间包包盖整体浇注。
实施例3。
合成烧结镁橄榄石砂的制备方法如实施例1。
合成镁橄榄石浇注料的原料按如下重量份数配制。
称取合成烧结镁橄榄石砂（MgO含量62.91%，SiO2含量28.99%，Fe2O3含量0.95%，CaO含量3.20%，AL2O3含量3.95%）90份放入破碎机中进行破碎，破碎之后加入球磨机中进行粉碎，粉碎之后再用振动筛筛出粒度为2.5-16目的骨料。
称取硅微粉（SiO2含量92.09%，Al2O3含量0.05%，Fe2O3含量3.65%，MgO含量2.43%，CaO含量1.12%，NaO含量0.66%，粒度300-350目）7份，金属镁粉4份（粒度300-350目）、金属硅粉4份（粒度300-350目）、酚醛树脂2份（粒度300-350目）、乌洛托品0.6份（粒度300-350目）、纳米镁铝溶胶粉3份，硅溶胶粉（SiO2含量30%，粒度300-350目）4份，氧化铈0.4份、六偏磷酸钠0.01份和三聚磷酸钠0.01份，混合配置成粉料。
其制备方法如下。
（1）混料：将称量好的骨料合成烧结镁橄榄石砂和配制的粉料加入泥料混炼机中，再加入水按重量份数为5份混合搅拌，搅拌转数25r/min，搅拌时间10-15分钟。
（2）成型：将搅拌好的混料浇包装编织袋25-50公斤，常温下自然养护24小时。
（3）干燥：将成型的浇注料放入干燥器进行干燥，干燥温度90℃-150℃，干燥时间24小时既得成品。
（4）使用：使用时现场浇注成型，使用温度为1500-1550℃，可用于中间包包盖整体浇注。
一、合成镁橄榄石浇注料的理化指标分析如表1。
表1一种合成镁橄榄石浇注料理化指标。
二、美国镁橄榄石浇注料的性能标准如表2。
表2美国镁橄榄石浇注料性能标准表。
由表1和表2可得出的结论：三个实施例中制备的合成镁橄榄石浇注料的MgO-SiO2的总含量＞85%,MgO含量＞55%,SiO2含量＞25%，体积密度均大于2.38g/cm3，美国镁橄榄石浇注料性能标准中的MgO-SiO2含量在77%左右，且其体积密度为1.70 g/cm3，由此说明本发明纯度高、密度大，其耐腐蚀性强且抗熔融金属和抗氧化能力强；本发明耐压强度不小于20Mpa，抗折强度为不小于3Mpa，而美国镁橄榄石浇注料性能标准中的抗折强度在2.4-2.7Mpa之间，说明本发明的强度更高；本发明1000℃下热膨胀系数在1.1%-1.5%之间，说明本发明的抵抗高温应力的性能高，高温热震稳定性好；并且合成镁橄榄石浇注料的制备过程中无铬、碳的添加，无有害气体排放符合绿色耐材标准。
可以理解的是，以上关于本发明的具体描述，仅用于说明本发明而并非受限于本发明实施例所描述的技术方案，本领域的普通技术人员应当理解，仍然可以对本发明进行修改或等同替换，以达到相同的技术效果；只要满足使用需要，都在本发明的保护范围之内。
Claims (8)
1.一种合成镁橄榄石浇注料，其特征在于,包括骨料和粉料，所述的骨料粒度为2.5-16目，其原料组成按重量份数配比如下：合成烧结镁橄榄石砂(MgO≥60%)85-95份；所述的粉料粒度为300-350，其原料组成按重量份数配比如下：硅微粉（SiO2≥92%）3-6份、金属镁粉3-5份、金属硅粉3-5份、酚醛树指1-3份、乌洛托品0.5-0.8份、烧结剂 0.3-0.5份、减水剂0.01-0.02 份、结合剂3-7份。
2.根据权利要求1所述的合成镁橄榄石浇注料，其特征在于：所述烧结剂为稀土氧化物。
3.根据权利要求2所述的合成镁橄榄石浇注料，其特征在于：所述稀土氧化物为氧化钇、氧化锶和或氧化铈。
4.根据权利要求1所述的合成镁橄榄石浇注料，其特征在于：所述结合剂为硅溶胶粉（SiO2≥20%）。
5.根据权利要求4所述的合成镁橄榄石浇注料，其特征在于：所述结合剂为纳米镁铝溶胶粉。
6.根据权利要求1所述的新型合成镁橄榄石浇注料，其特征在于：所述减水剂为三聚磷酸钠和/或六偏磷酸钠。
7.根据权利要求1-6任一所述的合成镁橄榄石浇注料，制备步骤如下：
（1）按重量份数秤取镁橄榄石砂放入破碎机中进行破碎，破碎之后加入球磨机中进行粉碎，粉碎之后再用振动筛筛出粒度为2.5-16目的骨料；
（2）按重量份数秤取硅微粉、金属粉、金属硅粉、酚醛树脂、乌洛托品、结合剂，烧结剂和减水剂，放入容器中，混合配置成粉料；
（3）混料：将称量好的骨料和配制的粉料加入泥料混炼机中，再加入重量份数为5-7份的水混合搅拌，搅拌转数为25r/min,搅拌时间 10-15分钟；
（4）成型：将搅拌好的混料浇包装编织袋25-50公斤，常温下自然养护，养护时间24小时；
（5）干燥：将成型的浇注料放入干燥器进行干燥，干燥温度90度-150度（最佳温度为120度），干燥时间24小时；
（6）使用：使用时现场浇注成型，使用温度为1500-1550℃，可用于中间包包盖整体浇注。
8.一种如权利要求1至6任一所述的合成烧结镁橄榄石砂，其特征在于，步骤如下：
（1）按重量分数秤取轻烧氧化镁粉（MgO≥92%，粒度20-40目）70%与石英砂粉（SiO2≥98%Fe2O2≤1%，粒度20-40目）30%，加入球磨机（Ф1200×3000）中进行球磨，球磨转速32r/min，球磨时间大约2h，出料粒度为90-200目；
（2）将球磨过的混合粉加入矿粉压球机中，主机转数为13r/min,压球成型即得混合粉球；再将成型的混合粉球放入干燥窑进行干燥，干燥温度为90℃-120℃，干燥时间12小时；
（3）将干燥后的混合粉送入高温的竖窑中烧制7-8小时后，即得合成烧结镁橄榄石砂。
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