You will need
  • the ingot or pieces of unrefined silver;
  • - concentrated nitric acid;
  • - concentrated hydrochloric acid;
  • - sodium bicarbonate (baking soda);
  • - source of open fire;
  • - a special oven or other device capable of maintaining the temperature of 1000 degrees Celsius.
Instruction
1
Pick up a piece of silver to clean. Remove all extra (plastics, polymers, crystals) from the surface of the cleaned object. Divide the piece of silver into small portions of 1-3 grams.
2
Pour into a glass jar about a tablespoon of a thirty percent (by volume) nitric acid. Now throw acid in the first portion of the silver and wait until it is completely dissolved.
3
Put the next batch of metal - and so on until all the silver will not be dissolved. Optionally, acid can be added. As a result, you will get a clear solution.
4
The resulting substance to heat to 70 degrees Celsius and, stirring constantly, a thin stream, start to pour ten percent hydrochloric acid. Will precipitate. Continue to stir and add acid until then, until the precipitate ceases to form.
5
Cool the solution to room temperature, a precipitate will appear at the bottom. Place the container with the product overnight in a dark place.
6
Filter and dry the resulting precipitate. Then fuse it with sodium bicarbonate (baking soda) at a temperature of 1000 degrees Celsius. Take about 1.5 grams soda 1 gram of silver.
7
Cool the melt. Now wash metal silver plaque on the surface of ordinary water from the tap.