How would you separate aluminum cans, steel cans, soda cans, milk jugs, and salt?We have:1 A long conveyor belt2 A large tank that can be filled with water3 Several powerful magnets hanging above the conveyor belt4 Nets for skimming the tanks and scooping material from the bottoms.I need a way to separate the 4 recycled materialsOh, and by the way, all the materials/contents are grounded into a fine powderPlease help me find the answerThanks! :)
First of all, soda cans are now made of aluminum - so lets group them with aluminumThe steel cans are the easiest to remove via the use of the magnetsThe milk jugs are probably made of plastic and probably have a specific gravity less than 1 - that is they will floatThey can be removed with skimmers at the surface of the waterThe aluminum has a specific gravity of greater than one -so it will sinkThey can be removed via a mechanism to scoop material from the bottom of the tanksThe salt is the only item which dissolves in waterIf the tank is located outdoors, all you have to do is to use the sun to assist in converting the water to water vapor - thus leaving the salt at the bottom of the tank.
