Mumbles Posted February 15, 2016 Share Posted February 15, 2016 The purification will depend on what else is in your fertilizer. Carbonates are common adulterants. Calcium nitrate is also common. Both are marketed as "CAN", which can make things confusing at first. It's easy to tell once you try to dissolve it though. Calcium nitrate CAN will be almost totally soluble, while the carbonate CAN will have a copious insoluble fraction. The method I mentioned is specifically for fertilizer grade AN mixed with calcium and/or magnesium carbonates or dolomite. You want to take advantage of the fact that the carbonates have poor solubility in water, while avoiding the formation of ammonium carbonate and subsequent disproportionation to ammonia, water, and CO2. Link to comment Share on other sites More sharing options...
lloyd Posted February 15, 2016 Share Posted February 15, 2016 and also something that totaly hygroscoped out.------------------------I've been at this from the chemistry side since 1967. I've never seen that term. Could you define and explain it? L Link to comment Share on other sites More sharing options...
OldMarine Posted February 15, 2016 Share Posted February 15, 2016 Hygroscope?? Link to comment Share on other sites More sharing options...
celia1095 Posted April 12, 2016 Share Posted April 12, 2016 Anyone know this ? How to protect concrete surfaces from corrosive attack of CAN fertilizer (calcium ammonium nitrate)? When CAN absorbs moisture from atmosphere, it becomes extremely corrosive for concrete. My mail: celia1095@qq.com Link to comment Share on other sites More sharing options...
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