钒的

The results of tests for production of 400?MPa-grade vanadium bearing concrete steel(Ⅲ-grade 20?MnSiV concrete steel)using VN alloying and ferrovanadium alloying were introduced.

介绍了攀钢采用氮化钒合金化与钒铁合金化生产 40 0MPa级含钒钢筋(2 0MnSiVⅢ级钢筋)的对比试验结果，研究了钒、氮微合金化对钢筋的性能和组织的影响，探讨了氮化钒的强化机理，比较了使用两种合金的生产成本。

Ferrovanadium prices have widened amid varying opinions among producers and traders over what the demand picture will look like in the fourth quarter.

富宝编译：国际钒市最新动态！对于第四季度钒的需求会是什么样子，钒铁生产商与贸易商之的不同意见已经扩大。

In China,the extracting vanadium from stone-coal on the circs of investigation and the craft status quo were summarized in this thesis,and the traditional craft and the new craft of oxygen pressure acid leaching were contrasted.

综述了我国石煤提钒的研究情况和工艺现状，对目前我国石煤提钒传统工艺和改进工艺进行了分析评述，并介绍了氧压直接酸浸出提钒新工艺，提出了我国石煤提钒工艺应有的发展方向。

Nano -crystalline grains of V was also formed on the surface layer of modified V, it delayed pulverization of modified V.

金属钒表层出形成了钒的纳米晶粒，延缓了改性钒的粉化，这对工程应用十分有利。

The traditional technologies for the production of vanadium from stone coal are reviewed,and several new technologies of which at present are introduced.

回顾了石煤提钒传统工艺的形成过程，介绍了目前已在生产上应用的几种石煤提钒新工艺，对促进石煤提钒的进一步发展提出了建

The results show that the optimal parameters of this technique are as time of 3 h, temperature of 150 ℃, ratio of liquor to solid of 1.21, H2SO4 additions of 25%, 85% material granularity of 0.095 mm. The one-step leaching percent of vanadium can reach 77%, the leaching percent obtain 90% after two-step countercurrent leaching. The vanadium leaching percent have growth and decline relation to occupation ratio of vanadium in in-soluble silicoaluminate mineral.

结果表明：该工艺的最佳工艺参数如下，即时间3 h、温度150 ℃、液固比1.21、硫酸用量25%、85%矿石粒度粒经小于0.095 mm；在此条件下，钒的一段浸出率为77%左右，而矿石经过两段逆流浸出后，钒浸出率可达90%；钒浸出率与矿石中难溶硅铝酸盐相中的钒占有率呈现消长关系。

The invention belongs to vanadic hydrometallurgy technology, especially a melting technique of directly lixiviating and separating vanadium from coal mine containing vanadium.

本发明属于钒的湿法冶金技术，特别是对含钒石煤矿直接浸出分离钒的冶炼技术。

The paper studied the semi-industrial test of extracting Vanadium pentoxide by the pelletization-rotary kiln roasting-low acid leaching-ion exchange technology from the Vanadium-containing kaolin.

对含钒高岭土进行了制粒-回转窑焙烧-低酸浸出-离子交换提取五氧化二钒的半工业试验，试验结果表明，回转窑焙烧过程钒的转化率达到74%以上，全流程五氧化二钒回收率达到71。

The paper studied the semi-industrial test of extracting Vanadium pentoxide by the pelletization-rotary kiln roasting-low acid leaching-ion exchange technology from the Vanadium-containing kaolin.

对含钒高岭土进行了制粒-回转窑焙烧-低酸浸出-离子交换提取五氧化二钒的半工业试验，试验结果表明，回转窑焙烧过程钒的转化率达到74%以上，全流程五氧化二钒回收率达到71.82%，产品质量达到国家标准GB3283-87要求。

Through tests on the determination of interference from the sample color, not only is its interference eliminated but also the accuracy of the method improved.

培酸法适用于深色溶液分析，灵敏度和准确度较高，通常用于总钒的仲裁分析；但是该法只适用于测定总钒，四价钒与五价钒只能用其它方法测定，这样就会引入方法误差，使四价钒、五价钒与总钒不匹配。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。