Discussion on the anti-corrosion effect of 30% sodium cyanide aqueous solution
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This post was last edited by xchenlue on 2015-6-17 08:45. A 30% sodium cyanide aqueous solution is used for corrosion prevention; what material should be used for the electrodes of electromagnetic flowmeters, and what material should be used for the pressure diaphragms? This is a highly toxic substance, so it’s necessary to use higher-quality materials. I hope you will kindly offer your advice.
The situation is as follows: it has been basically decided to use a double-flange level gauge, as this is a highly hazardous substance, and it is necessary to employ a proven product to ensure stability. Moreover, when using electromagnetic flow measurement, the electrodes must be in contact with the liquid. I hope senior colleagues can provide some guidance
Is it for measuring liquid level or flow rate?
Dual-flange level measurement, electromagnetic flow measurement
I can only say that if the fluid is sodium cyanide, for an electromagnetic flowmeter the electrode material can be tantalum, with PTFE used as the lining.
It is said online that sodium cyanide is a strong base and weak acid salt – can tantalum be used with it?
Yes, electrode 316 can measure 100% **sodium**
Metals such as iron, zinc, nickel, copper, cobalt, silver, and cadmium dissolve in sodium solution, and a corresponding substance is produced as a result of this reaction, according to Baidu Baike. Are you sure?
Sure, if possible I can send you a corrosion table for your reference.
Thank you then, please send it to 1213469161@qq.com