尖晶石

Cobalt colored blue spinel once existed only as synthetic type, but recently natural type is discovered.

曾经认为，钴至色的蓝色尖晶石只有合成才有，但最近发现了天然的蓝色尖晶石。

The whole sintering process of SHS converter fettling materials can be divided into three steps. The first step is the decomposition reaction of carbonates and sodium nitrate, which is an endothermic reaction. The second step is the SHS reaction, i. e. thermite reaction, the metal of Al reacts with CO〓, O〓, NO〓, Fe〓O〓 to form Al〓O〓. The speed of thermite reaction is very quick, and accompanied with large amount of heat emission and temperature rise. The third step is the reaction of spinels formation. The Al〓O〓 produced by SHS reacts with MgO to form spinels.

整个SHS补炉料的烧结过程分三步进行：第一步为碳酸盐、硝酸钠的分解反应，属于吸热反应；第二步为SHS反应即铝热反应，金属铝粉与CO〓、O〓、NO〓、Fe〓O〓等反应生成Al〓O〓，反应速度很快，并伴随有巨大的放热和温度升高；第三步为合成尖晶石的反应，SHS反应产物Al〓O〓与MgO反应生成尖晶石。

The main content of this thesis includes: studies on the preparation, surface-modification mechanism and electrochemical performance improvement of spinel LiMn〓O〓; Preparation and properties of 5V cathode materials 〓; Physical properties and electrochemical performance studies on layered 〓 for lithium ion batteries.

本论文的主要研究内容包括：正尖晶石LiMn〓O〓的制备、表面修饰改性机理以及电化学性能的改善；具有正尖晶石结构的5伏正极材料〓的合成与性能探索；具有层状结构的镍锰基化合物〓的物理性质与其作为锂离子电池正极材料的电化学性能以及该材料的产业化探索。

This is our top spinel quality, made from burnt high-grade magnesia and prefabricated spinel.

这是我们的顶级尖晶石产品，由高等级的镁砂和预制的镁铝尖晶石烧结而成。

This paper introduces the latest progress of some studies of mineralogical features of spinels.

尖晶石的其它应用，如尖晶石轴承及颜料等也取得了较大的发展。

In 1985, gem spinel of extreme beauty and size was discovered at Pamir Mtns., which is considered as the locality of "one of the kind" museum piece spinels in the world.

照片上大而美丽、近乎完美的尖晶石是1985年在帕米尔山脉发现的。世界各地的博物馆中，可供参观的宝石级的尖晶石大都是产自帕米尔地区。

They are important components of many metamorphic and ignious rocks.

工业上应用较多的主要是镁铝尖晶石和镁铬尖晶石。

The experiment results showed that MnO〓 and TiO〓 could accelerate the sintering reaction of the NiFe〓O〓 spinel, improve the density and the intensity of the spinel ceramic, and drop the sintering temperature as well.

研究结果表明，添加MnO〓和TiO〓可以促进尖晶石陶瓷相的烧结，提高尖晶石的密度和强度，降低烧结温度。

In the course of selecting oxide additives material in the nickel-ferric spinel based inert anode, both the solubility in the cryolite molted salt of oxide additives and the whole thermodynamics action in electrolyte of oxide additives are discussed in this article, thus to have a comparatively reasonable selection of the nickel-ferric spinel based inert anode material.

在选择镍铁尖晶石基惰性阳极材料氧化物添加剂过程中，不仅探讨了氧化物添加剂在冰晶石熔盐中的溶解度，而且还探讨了氧化物添加剂在电解液中的整个热力学行为，从而对镍铁尖晶石基惰性阳极材料做出了较为合理的选择。

The ultramafic rocks outcropped at the Altyn region are all harzburgites. Remant grains of primary minerals have melted residual texture and elastic deformation texture under high temperature and pressure. The whole-rock analyses show their low TiO〓 contents (0.01～0.04%), low Al, Ca and high MgO contents and wide Mg〓 range (89.35～95.57). Rare earth patterns have two types, namely tabacco pipe-shped and LREE-shaped, of which the former is often seen. The chondrite-nomalized Yb values of these analyses are all lower than 1. The spinels have low Ti and high Cr content and most spinels have Cr# higher than 60. All of the above characteristics show that the ultramafic rocks in the Altyn fault zone are components of metmorphic peridotites of ophiolite from depleted mantle source and most ophiolites from this zone belong to supra-subduction zone type ophiolite with a few mid-ocean ridge basalt type.

阿尔金露头区的超基性岩全为方辉橄榄岩，残余的新鲜矿物颗粒发育有熔融残余结构和高温高压下塑性变形结构，全岩分析显示样品TiO〓的含量低，为0.01～0.04％，具有低的Al和Ca，MgO含量高，Mg〓为89.35～95.57；稀土配分型式有两种，即烟斗型和LREE亏损型，前者占绝大多数，Yb球粒陨石标准化后的值全都小于1；尖晶石低Ti高Cr，大部分尖晶石的Cr〓大于60，上述特征说明阿尔金超基性岩是蛇绿岩的地幔橄榄岩成员，来自亏损的地幔源区，阿尔金蛇绿岩大多属于俯冲带之上型蛇绿岩，有少量的大洋中脊型蛇绿岩。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。