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镁橄榄石

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The experiment results show that enstatite is transformed into the perovskite structure under the shock compression whereas the perovskite structure is transformed retrogressively into the single-chain structure during the process of pressure release.

对回收样品进行的X射线衍射分析结果表明:两发顽火辉石回收样品的主相均是单链状结构硅酸盐,而非钙钛矿结构;另外,回收样品中均未观察到氧化物SiO2 和(Mg0.92, Fe0.08)O的XRD特征谱线;两发MgO+SiO2回收样品中均观察到SiO2和镁橄榄石(Mg2SiO4)而没有氧化物MgO。

It indicated that large amount of forsterite was gained in the microcrystal product, and the melting temperature of the base glass was greatly lowered; the ingredients schedule was successful.

研究表明,晶化产物中生成了大量以镁橄榄石为主晶相的微晶体,且基础玻璃的熔融温度大为降低,该原料配比是成功的。

Like the calcium-aluminum mineral, magnesium olivine was one of the first materials that formed around the young sun.

和钙-铝矿物质一样,镁橄榄石是在早期的太阳近旁形成的首种物质之一。

The particle also contained magnesium olivine, a component of Hawaii's green sand.

在微粒中还含有镁橄榄石,也即夏威夷绿色沙地的组分。

Catalysts with high activity and stability were prepared by impregnating nickel and cerium nitrates solution onto natural olivine carrier.

浸渍法制备了添加Ce的Ni基镁橄榄石催化剂,Ce的添加改善了催化剂的活性和稳定性。

In the condition of keeping F、 K、Na content fixed, To improve slag structure and raise slag melting point and viscosity, MgO content is raised and TiO〓 is added. the main content is as follows:(1) Keeping CaO/SiO〓 fixed, MgO content rises from 10% to 16%, the free running temperature goes up 106℃, the viscosity goe down at bigger than 1425℃, but difference is little; keeping /SiO〓 fixed, MgO content rises from 10% to 16%, the free running temperature rises 87℃, the viscosity rises too; adding TiO〓 to 5%, the free running temperature goes up 98℃, the viscosity rise a little.(2) Powder crystal x ray diffraction and microscopic analysis shows: increasing MgO content, the cuspidine will decreace or even disappear, the monticellite goes up with MgO content rising, keeping /SiO〓 fixed, Akermanite content goes up, for high melting point minerals appear or go up, the free running temperature of the slag bearing F is raised; Adding TiO〓, high melting point mineral—Perovskite forms, it can making other minerals'crystalling fast, it is the reason that TiO〓 raises the free running temperature of the slag bearing F.

2对测定粘度的冷凝渣所进行的X粉晶衍射及显微分析和鉴定表明,增加MgO含量,渣中枪晶石将减少甚至消失,而钙镁橄榄石则随MgO含量增加而增加,在/SiO〓不变时,黄长石含量也有所增加,高熔点矿物的出现和增加,提高了含氟熔渣的熔化性温度;加入TiO〓熔渣中将形成高熔点矿物-钙钛矿,钙钛矿的形成还促使黄长石的结晶,这是TiO〓提高含氟熔渣熔化性温度的根本原因。

The forsterite ore deposit in Yichang of Hubei Province, being one of the limited large ore deposits across the Mainland China, is used to produce molding sand.

宜昌镁橄榄石矿,是我国为数不多的大型矿床之一,用其矿石生产的镁橄缆石型砂。

To replace one magnesium atom with two hydrogen atoms increases the electron transport of forsterite crystal, and the hydrous forsterite dose not become a conductor.

两个氢原子替代了一个镁原子后,增强了晶体结构中的电子运移,但是含水镁橄榄石仍然是不导电的。

The results showed that the first phase of sample is μ-cordierite and the final phases are α-cordierite, forsterite, MAT and rutile .

结果表明,样品初晶相为μ-堇青石,最终结晶相除α-堇青石外,还有少量的镁橄榄石、镁铝钛酸盐以及金红石相。

An investigation to the microstructure of worn sample of dry vibratable materials for tundish working lining after using 40 hours shows that the materials changes the properties of slag by the chemical filter, increases the viscosity of slag, forms a dense layer at slag/refactories interface, then blocks the more slag penetrate in it. The complex phase formed at the interface, such as magnesiowusite and complex spinel et al, would absorb in more low-melting point minerals, then degrade its melting point and dissolve into slag, which forms low-melting point silicate phase, penetrates into dry vibratable materials along with Monticellite and Merwinite bonding phase by diffusion.

根据使用40小时后的中间包工作层残衬结构分析,其侵蚀机理为:干式料对渗入熔渣产生化学过滤作用,增大熔渣粘度,在干式料/熔渣界面形成致密结构,阻碍熔渣的进一步渗透;随着反应的进行复合矿物中熔剂含量的增多,熔点降低,溶于熔渣形成低熔点的硅酸盐相,并沿着干式料中的钙镁橄榄石和镁蔷薇辉石等结合相向干式料基质中扩散渗透。

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