Various commercial methods preventing vanadium pollution of catalyst were expounded and Suggestions were also proposed.
对工业上应用的各种防止钒污染的方法分别作了阐述，并提出了建议。
Metal passivator can inhibit nickel and vanadium pollution on the catalytic cracking catalysts and improve the property of polluted catalysts.
金属钝化剂可以抑制镍和钒等金属对催化裂化催化剂的污染，使被污染催化剂的性质得到改善。
Some countermeasures and research prospects have been put forward to prevent and control the increasingly serious pollution of Vanadium in soil.
最后针对土壤中钒污染日益严重的状况，提出了几点防治对策和研究展望。
Non-pollution roasting technology by using sodium carbonate, calcium oxide, red mud and lime mud as roasting additives for extraction of vanadium from siliceous navajoite was studied.
采用氧化焙烧法研究了无污染的焙烧添加剂碳酸钠、氧化钙、红泥和苛化泥从硅质岩钒矿中提取钒的焙烧工艺。
This processing line is pollution-free and it is the best for Lvdong valley vanadium mine production detailed line please see following figure.
该工艺可达到无污染排放，是针对吕东沟钒矿石的最合理的提取工艺，具体流程见下图。
Objective To understand the level of drinking water pollution by vanadium and titanium in Panzhihua.
目的了解攀枝花市饮用水钒、钛污染情况。
The present invention has vanadium recovery greater than 90% featuring energy saving and no pollution.
本发明钒的回收率达90%以上，节能、无污染。
The present invention has vanadium recovery greater than 90% featuring energy saving and no pollution.
本发明钒的回收率达90%以上，节能、无污染。
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