查询词典 leaching

The effects of temperature, oxygen partial pressure,initial acid concentration,partical size and concentration of Fe~(2+)added into the solution on the leaching rate of iron are examined.

考察了温度、压力、始酸浓度、矿样粒度、溶液中Fe ~(2+)浓度对Fe浸出率的影响。

The research on the new process of vanadium extraction from vanadium containing stone coal by acid leaching under oxygen pressure is described.

介绍了含钒石煤氧压酸浸提钒新工艺的研究情况。

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。

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。

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 improve the flow rate of well is of importance to in-situ leaching of uranium in low permeable deposits.

提高钻孔涌水量是低渗透砂岩型铀矿床地浸开采的重要内容。

And the leaching rate of soluble phosphate from phosphate rock could be increased.

从而增强磷矿粉中可溶性磷的浸出效果。

In fine mesh bags the anabolism of microorganisms could assimilate N from outside of bags and even partly offset the effect of physical and chemical decay, such as leaching.

微孔径袋内由于排除了大中型土壤动物的作用，微生物的同化作用将凋落物袋外环境中的N元素等物质吸收到袋内凋落物中，甚至还可能部分抵消了气候因素导致的物理、化学腐解作用，如淋溶等。

The effect of reaction time, leaching times and solvent PH, ratio of raw material and solvent, PH of phytin, settling time on phytin yield and quality, extracted from tikitiki , were studied.

对米糠中提取菲丁的工艺条件进行了优化，考察了酸浸时间、酸浸次数、酸浸pH值、液料比、中和pH值、静止时间等因素对产品的产量和质量的影响，得出了优化的工艺条件。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。