Question

Removal of calcium from calcium-ammonium nitrate?

Answer 1

just a few thoughts number 1 can you just let the calcium sulphate settle to the bottom of the vessel it may take a few hours then decant of a fairly clear Ammonium nitrate solution this will save you from that messy filtration operates the supernet at as higher temperature as practical unit you just see sign of crystals in the body of the liquid then add a little boiling water to bring back to full dissolution then let it cool and disturb to room temperature on its own don't try to rest the crystallisation that leads to find crystals try letting the supernet set at room temperature for a few hours before putting it in the refrigerator impurities maybe screen of your crystal formation I don't have any quick ideas for solving that's all I am really not an expert at this they are just something I learnt in organic you should get some fundamental information like the solubility curve of Ammonium Nitrate and water versus temperature this may help you understand the crystallisation process if you are saying that you are called back is a pure Ammonium Nitrate and water and it is behaving much differently than you may indeed be fighting impurities they may even be become in throw your water supply try everything on a small scale until you get a good procedure