查询词典 alumina

Based on this, the preliminary division of the level and structure of alumina production system is made,meanwhile,the research status and de...

在此基础上，本文将尝试对氧化铝生产系统的层次和结构做初步的划分，并对系统节能技术在氧化铝生产中的研究现状与发展趋势做一些探讨。

Alumina is a major raw material for producing electrolytic aluminium, accounting for more than half the cost.

氧化铝是生产电解铝的主要原材料，其费用占生产成本的一半多。

The recovery of alumina in the high mole ratio aluminate solution was studied.

对加入石灰后的高苛性比铝酸钠溶液中氧化铝的回收进行了研究。

The results are listed as following :㏕he best anti-erosion proportion of resin present is 25wt% in the condition of silicon carbide reinforced SMCC, while the alumina reinforced SMCC is 40wt%.(2) The better anti-erosion results was achieved with the ratio of silicone resin to acrylic resin containing hydroxy being 3: 1.㏕he composites coating tends to be more brittle when added in alundum particles. It also means that the maximum erosion peak of alundum reinforced SMCC tends to normal angle.甌he change of erosion rate of SMCC can be divided into two stages with the increment erodent velocity: the slow erosion stage of the beginning and the stable erosion stage.

首次发现：①SiC增强的复合涂料涂层，树脂含量为25wt％时，具有最佳耐冲蚀性能：Al_2O_3增强的复合涂料涂层，树脂含量为40wt％时，具有最佳耐冲蚀性能；②SiC增强的涂料，有机硅树脂与丙烯酸树脂的比例为3：1时的耐冲蚀性能好于1：1的复合涂料涂层；③Al_2O_3增强体使涂层变脆的倾向大于以SiC为增强体的涂层，即SiC增强的复合涂料涂层的最大冲蚀率出现在30°，Al_2O_3增强的复合涂料涂层的最大冲蚀率出现在75°～90°之间；④低速冲蚀磨损机理主要是弹性变形与疲劳；高速冲蚀磨损机理主要是显微切削和显微犁耕。

Increasing the calcining temperature at 1500℃ 5h, the morphologies of the product became the big and wide vermiform-fiber form particles, the length was about 2.5 μm, and the width was about 700 nm. In addition, the vermiform-fiber form particle could be found in the filtrated precipitate with the additional ammonium sulfate. If the ratio of ammonium sulfate to alum is above 1, the vermiform-fiber form particle was formed. After calcined at 1500℃ 5h, the particle grow up to 2μm. Adding ammonium sulfate was also reduced the particles size of alumina because the surface area of the products was increased by increasing the quantity of ammonium sulfate.

在明矾与氨水沉淀物经过滤后再额外添加不同硫酸铵的比例，1200℃ 1hr煅烧后，发现添加硫酸铵比例在1以上，其型态亦为蠕虫状纤维，当以1500℃ 5hr煅烧，蠕虫状纤维型态粒子亦变为又大又胖，其粒子尺寸长度约为 2 μm 宽度约为 500 nm；且将煅烧1200℃ 1hr测其比表面积值，会随著硫酸铵的添加量增加，粉体的表面积会增加且粉体变细，添加硫酸铵比例为 4 者所得粉体粒径最小，从比表面积所得结果估计约 150 nm 。

The most cost effective are 90 or 95 percent alumina oxide nozzles, which work adequately for lower amperage applications.

最具成本效益的90或95%氧化铝喷嘴，适当降低工作电流应用。

Tiatania and alumina in the combined support were anatase and γ- Al2O3 crystal structure, respectively.

复合载体中的TiO2和Al2O3分别以锐钛矿和γ- Al2O3晶型存在。

Owing to its lots of applications in engineering and interesting structure, anodic alumina has recently attracted great interests.

多孔铝的诸多工程应用及它的非常有趣的形态引起了国际上很多科研组的极大兴趣。

At present, anodic alumina is mainly used as a mask for the fabrication of nanocomposite structures.

目前，在国际上主要是利用多孔铝做模板制备纳米材料。

Sample analysis shows that within alumina glaze formula, when Si/Al〈4.0, there is anorthite phase and little quartz and submellite to separate out; When Si/Al〉4.0, sample stays fine at glass state; anorthite crystal forms at the highe

样品呈良好的玻璃态；高铝釉式（Si／Al〈4.0）汝瓷釉内钙长石晶体在最高烧成温度（1260℃）保温过程中就已生成，在降温过程中晶体继续长大。

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。