how can i separate a mixure of salt and another "dust".both disolve in water.so water i do not think its a solution.is there a magnetic solution or something?thank you in advance.
2007-09-27 19:29:33 · 5 answers · asked by XeS D 1 in Science & Mathematics ➔ Chemistry
What is the dust?
Dust don't dissolve in water..
Try dissolving all the salt and then you filter it
2007-09-27 19:33:33 · answer #1 · answered by Huang K 3 · 0⤊ 0⤋
No, but salt is water soluble and most dust is not.
If you have two water soluble substances then that doesn't mean you can't sort it out. Magnets is one way that might work, but the best way would be through plasma sifting. If you convert the material to plasma then you will have different melting points for each substance so you can separate them that way. This is the major way they remove the various chemicals from oil to get the various oil products.
Another method is to find a catalyst that will cause reactions between some materials and others. Catalysts often speed up naturally occurring reactions and rarely are not consumed in the reaction so they can be removed and reused. This is another method the oil companies use to refine oil.
Sifting and physical sorting methods like sifting by graduated sizes or forced sifting with centrifugal force is a way to handle solids. However some elements properties can be different under an electrical field. Electrolysis is one method used to sift out fine gold dust because the dirt doesn't conduct electricity well, while gold does. It all depends on the elements and compounds you have and desire to remove.
Finally, if you dust is organic then burning it will release the carbon and destroy the organic materail while just melting the salt and leaving it behind. If you have good temperature control you can just reach the burning point for the organic materail and blow it off with a fan without melting the salt. Or maybe you want to melt it to a metal plate and then use tha plate as a cathode in an electrolysis bath to remove the gold or copper from say gold or copper salts. Both will react to differnt cathodes in different ways.
2007-09-27 19:38:09 · answer #2 · answered by Dan S 7 · 0⤊ 0⤋
try holding a charged rod over the mixture, the electric charge may attract the dust and leave the salt behind...
2007-09-27 19:35:51 · answer #3 · answered by Me 4 · 0⤊ 0⤋
does distillation or condensation process work??hmm..no idea with the word "dust"..sorry
2007-09-27 19:37:07 · answer #4 · answered by red devil 4 · 0⤊ 0⤋
by centrifugal force
2007-09-27 19:36:19 · answer #5 · answered by SlyerFox 3 · 0⤊ 0⤋