钒

Melting characteristics and heat treatment of the Ti-V based TiVCrFeZr alloys were analysed and studied. Microstructures of the alloys were analysed by means of XRD, SEM and electron microprobe method.

分析探讨了钛钒基TiVCrFeZr合金的熔炼特点和热处理工艺，利用XRD、 SEM和电子"微探针"技术对合金微观结构进行了分析。

The mechanism of vanadium removal from ammonium molybdate solution by ion-exchange was studied.

摘 要：对钼酸盐溶液离子交换钼钒分离机理进行研究。

This paper introduces the use of vanadium-ammonium molybdate colorimetric method to estimate the phosphorus content in the manganese ore.

用钒—钼酸铵比色法测定锰矿中的磷含量，测定结果表明：相对偏差小于 2 %，测定范围 0 1～ 1 0 %方法简便快速，可满足生产要

I can provide raw materials for the Division include: tantalum ore, niobium ore, tungsten ore, molybdenum ore, cobalt ore, nickel ore, monazite, zircon ore, chromium carbide, vanadium carbide and so on, the majority of imported raw materials.

我司可提供的原材料包括：钽矿、铌矿、钨矿、钼矿、钴矿、镍矿、独居石、锆矿砂、碳化铬、碳化钒等，大部分为进口原料。

Air-segmented ; flow injection ; natural waters ; catalytically kinetic spectrophotometry ; vanadium

空气整段间隔；流动注射；催化动力学光度法；天然水；钒

Extracting conditions such as temperature,the concentration of sulfuric acid are optimized.Test results show that leaching rate of vanadium pentoxide is up to 92% at the temperature of 90 ℃,with mass ratio of l...

实验结果表明，在MnO2用量3%、温度90℃、液固比2∶1、反应时间9 h、硫酸的浓度为20%、搅拌速度为1 500 r/m in的优化条件下，五氧化二钒浸出率为92%，比钠盐焙烧工艺高出10%以上，环境污染和能源消耗也得到有效控制。

Vanadium pentoxide is trading in a range of $6.25 to $7.25 per pound compared with $6.75 to $7.25 per pound two weeks ago.

五氧化二钒的价格也由两个星期前的6.75-7.25美元/磅，下降到目前的6.25-7.25美元/磅。

Test results show that leaching rate of vanadium pentoxide is up to 92% at the temperature of 90℃, with mass ratio of liquid and solid being 2:1, usage of manganese dioxide being 3%, with concentration of sulfuric acid of 20%, and mixing speed at 1500 r/min. It is about 10% higher than roasting. Environmental pollution and energy consumption can also be effectively controlled.

实验结果表明，在MnO2用量3%、温度90℃、液固比2：1、反应时间9 h、硫酸的浓度为20%、搅拌速度为1500 r/min的优化条件下，五氧化二钒浸出率为92%，比钠盐焙烧工艺高出10%以上，环境污染和能源消耗也得到有效控制。

The process of producing vanadium pentoxide from bone coal vanadium mine without salt roasting and acid leaching, was systematically studied.

系统地研究了石煤无盐焙烧酸浸生产五氧化二钒的工艺技术，提出了各工序的工艺条件。

To realize our goal, two kinds of vanadium source, including amorphous vanadium pentoxide, and the intermediate in the process of forming vanadium pentoxide gels, were used as precursors in this study.

于是，我们在研究中使用了两种钒源用作反应前驱体（一种是无定形的V2O5粉末，另一种是H2O2处理V2O5形成溶胶过程的中间体），选取了多碳醇与烷基链相同的单胺两种结构导向剂。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。