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铝尖晶石
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  alumina spinel
     6) Corrosion mechanism of alumina spinel self-flow castables was analyzed according to the phase diagram,the main reason of slag penetration is the increases of Fe2O3 in slag or low melting point phase CF.
     6)对于转炉末期渣,随着水泥含量增加,浇注料的抗渗透性增强,抗熔蚀性变差; 7)应用相图分析了铝尖晶石浇注料的侵蚀机理,认为渣中Fe_2O_3或低熔点相CF的增加是渣渗透的主要原因。
短句来源
     Development and application of alumina spinel castable for LF refining ladle
     LF精炼钢包用铝尖晶石浇注料的研制与应用
短句来源
     The effect of alumina enriched magnesia alumina spinel on slag resistance and Ca treated steel resistance of magnesia refractories was investigated.
     研究了富铝尖晶石对镁质耐火材料抗钢渣与抗钙处理钢侵蚀性的影响。
短句来源
     Development and application of high alumina spinel carbon brick
     高铝尖晶石炭砖的研制及使用
短句来源
     The investigation has shown:1)With the increasing of alumina enriched magnesia alumina spinel in the matrix,the resistance to basic slag penetration tends to increase,while the resistances to basic slag corrosion and Ca treated steel tend to decrease;
     结果表明 :随着富铝尖晶石加入量的增加 ,镁质耐火材料的抗钙处理钢和钢渣熔蚀性逐渐减弱 ,而抗钢渣渗透性逐渐增强 ;
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  aluminum spinel
     The data show that this catalyst has high activity and strength,good heatresisting and abrasion performance,and long life. During operation,the performances of the catalyst are steady with little change in physical and chemical properties,and difficult form the non active nickel aluminum spinel.
     数据表明CN - 2 0型催化剂活性好、强度高、耐热、耐磨损 ,在运转中催化剂性能稳定 ,物化性能变化不大 ,且不易生成无活性的镍铝尖晶石 ,催化剂使用寿命长。
短句来源
     The spinels in pyroxenite xenoliths are aluminum spinel with higher Al content and lower Cr content and green in color in thin sections.
     辉石岩中尖晶石在薄片下呈绿色,为铝含量高、铬含量低的铝尖晶石;
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  “铝尖晶石”译为未确定词的双语例句
     Al2O3, MnS·FeS, FeO·MnO.
     铝尖晶石.微观夹杂物有: Al2O3; MnS·FeS:FeO;
短句来源
     The zeta potentials of high purity tabular alumina(Al 2O 3),alumina rich spinel(MgO·1.35Al 2O 3) and their mixture Al 2O 3-MgO·1.35Al 2O 3 at different pH values were measured.
     测试了高纯板状刚玉粉 (Al2 O3)、富铝尖晶石粉 (MgO·1 .35Al2 O3)及其复合粉料 (Al2 O3-MgO·1 .35Al2 O3)在水溶液中不同 pH值下的ζ电位 ,三者的等电点分别为 7.4、~ 3和 5 .3。
短句来源
     (2)Corundum grain reacts with FeO,Na_2O and K_2O of slag generating ferric oxide-alumina spinel and some β-Al_2O_3;
     刚玉颗粒与渣中的FeO、Na2O和K2O反应生成铁铝尖晶石和少量针状β-Al2O3;
短句来源
     The ceramic layer was composed of columnar α Al 2O 3, irregular FeO·Al 2O 3 and FeO·Al 2O 3·SiO 2, with the FeO·Al 2O 3 locating between the columns of Al 2O 3, while the FeO·Al 2O 3·SiO 2 locating through the boundary of FeO·Al 2O 3. The distribution of FeO·Al 2O 3·SiO 2 was beneficial for better corrosion resistance.
     陶瓷层组织由垂直管壁生长的α Al2 O3柱状晶和沿其晶间分布的FeO·Al2 O3铁铝尖晶石相以及少量FeO·Al2 O3·SiO2 玻璃相构成 ,玻璃相分布于铁铝尖晶石的晶界并将其包围起来 ,这种结构有利于减轻铁铝尖晶石对复合管内衬抗腐蚀性的不良影响。
短句来源
     as far as the ABR with high iron content is concerned, in addition to the reactions dissertated above, the corrosion reactions occurred in the material include that Fe2O3 is reduced into FeO and Fe3O4, that FeO reacts with Al2O3 to form FeAl2O4 and Fe3O4 is reduced into metallic iron subsequently.
     而对于高铁含量红柱石制品而言,发生的侵蚀反应除了SiO_2被还原成SiO之外,还包括Fe_2O_3被还原成FeO和Fe_3O_4,进而FeO与Al_2O_3反应形成铁铝尖晶石(FeAl_2O_4),Fe_3O_4继续被还原成金属铁。
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  alumina spinel
A set of physicochemical analytical methods was applied to study fusion and crystallization of magnesia-alumina spinel, aluminum titanate, mullite, and their binary and ternary formulations.
      
Chromian spinels from the Staré Ransko gabbro-peridotite, Czech Republic, display a distinct development trend: from primary Cr-rich spinels towards ferro-ferri (Ti-enriched magnetite) and magnesio-alumina (spinel sensu stricto) spinels.
      
Effects of Al3+ ions being partially substituted by Fe3+ ions in the magnesium-alumina spinel structure on the activity of SO2 oxidative adsorption and the reductive decomposition of sulfate have been studied.
      
To develop a novel additive that has excellent olefin reduction capability for FCC gasoline without loss in octane number, different additives based on magnesia-alumina spinel were prepared by sol-gel method.
      
High temperature creep behaviour of nearly stoichiometric alumina spinel
      
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  aluminum spinel
Specific Features of the Synthesis of Porous Materials Based on a Magnesium-Aluminum Spinel
      
The optimum conditions are determined for treatment of two-phase materials with the aim of preparing ceramics based on the magnesium-aluminum spinel with an accessible porosity of higher than 50%.
      
Assuming the Ni-NiO system, the formation of nickel aluminum spinel could be used to increase the equilibrium hydrogen yield, thus, enabling the hydrogen production via looping redox process.
      
After bombardment for 2 h, the material was found to contain nickel aluminum spinel with a heavily distorted structure.
      
The three supports are silicon nitride (Si3N4), magnesium aluminum spinel (MgAl2O4), and graphitized carbon (C).
      
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Powder injection in ladle is a new technology developed during the seventies. Up to now more than 40 units have been used in industry around the world. The main types of equipment are TN (Thyssen Niederrhein)system and SL (Scandinavian Lancers) system. The powders used are: Ca-Si, CaC_2, Mg+CaO, Ca(CN)_2, CaO etc. For the TN process ladles are lined with dolomite, and for the SL process both fire clay and magnesia brick are suitable. Usually argon is used as the carrier gas.As a result of powder injection,some...

Powder injection in ladle is a new technology developed during the seventies. Up to now more than 40 units have been used in industry around the world. The main types of equipment are TN (Thyssen Niederrhein)system and SL (Scandinavian Lancers) system. The powders used are: Ca-Si, CaC_2, Mg+CaO, Ca(CN)_2, CaO etc. For the TN process ladles are lined with dolomite, and for the SL process both fire clay and magnesia brick are suitable. Usually argon is used as the carrier gas.As a result of powder injection,some detrimental elements in steel can be substantially lowered such as: S to 0.002~0.005%, P to 0.005%, O to 0.0015%. MnS inclusions can be eliminated and undeformable inclusions of the spinel(CaO·Al_2O_3)type formed. Ultra low sulphur steel,low phosphour steels and heavy plates with superior toughness in Z direction can thus be produced. Powder injection technique has the advantages of simple equipment,low investment.low operation cost,good flexibility etc. It is estimated that injection metallurgy will find more and more use in the steelmaking industry during the eighties

钢包喷粉是七十年代发展起来的新技术、新工艺,目前世界上有40余台设备投入了工业生产。设备的主要类型有TN法(Thyssen Niederrhein)和SL法(Scandinavian Lancers)。使用的粉剂有Ca-Si、CaC_2、MgO+CaO、Ca(CN)_2、CaO等。TN法要求钢包内衬用白云石砌成,SL法对钢包内衬无要求(粘土砖、镁砖均可)。一般用氩气作为输送气体。经钢包喷粉处理,可使钢中S<0.002~0.005%,P<0.005%,O<0.0015%,消除MnS型夹杂,形成不易变形的钙铝尖晶石型夹杂物。从而能生产超低硫钢,低磷钢和Z向韧性优良的厚钢板等。钢包喷粉技术具有设备简单,投资少,操作费用低廉,灵活性大等优点,预计八十年代喷射冶金将得到更广泛的应用。

Pressureless sintered silicon nitride with magnesium aluminum spinel and rare earthoxide as densification aids were investigated.An almost pure α-phase silicon nitride finepowder (specific surface area=5~7m~2/g) was used as the starting material.By the liquidsintering process, silicon nitride articles with about 1% apparent porosity could be fabri-cated.The strength achieved at room temperature was 7000~7500kg/cm~2(part of them exceed-ed 8000kg/cm~2)and hardness HRA exceeded 90.Their performances at room temperature...

Pressureless sintered silicon nitride with magnesium aluminum spinel and rare earthoxide as densification aids were investigated.An almost pure α-phase silicon nitride finepowder (specific surface area=5~7m~2/g) was used as the starting material.By the liquidsintering process, silicon nitride articles with about 1% apparent porosity could be fabri-cated.The strength achieved at room temperature was 7000~7500kg/cm~2(part of them exceed-ed 8000kg/cm~2)and hardness HRA exceeded 90.Their performances at room temperature com-pare favorably with hot-pressed silicon nitride doped with 5wt% MgO.

本文报导了以镁铝尖晶石和稀土氧化物为致密化添加剂的烧结Si_3N_4研究。用接近纯α相的Si_3N_4细粉(比表面5~7m~2/g)为原始粉料,通过液相烧结,能制得显气孔率在1%左右的致密的试样。室温强度达7000~7500kg/cm~2,部分强度超过8000kg/cm~2,硬度HRA在90以上。试样的室温性能可与添加5wt%MgO的热压氮化硅材料相比。

In this paper, the conditions in service of rammed monolithic lining with alumina-magnesite refractory in 200t ladles of oxygen converters are described, their influence on steel quality is discussed and measures for prolonging the life of rammed lining are also provided. Results show that this kind of lining has got better effect than the fire-clay brick lining. This is because the formation of Mg-A1 spinel phase and the modified structure of basic materials during operation has improved the property of the...

In this paper, the conditions in service of rammed monolithic lining with alumina-magnesite refractory in 200t ladles of oxygen converters are described, their influence on steel quality is discussed and measures for prolonging the life of rammed lining are also provided. Results show that this kind of lining has got better effect than the fire-clay brick lining. This is because the formation of Mg-A1 spinel phase and the modified structure of basic materials during operation has improved the property of the ladle lining.

本文介绍了氧气转炉200t盛钢桶采用铝镁质材料机械捣打整体内衬的使用情况,探讨铝镁质捣打桶衬对钢质量的影响,提出提高捣打桶衬寿命的技术措施。使用结果表明,铝镁质机械捣打整体内衬使用效果比粘土砖砌内衬好,原因是在使用过程基质中形成镁铝尖晶石相,改善了基质部分的组织结构,从而改善了桶衬材质的使用性能。

 
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