You will need
  • native platinum, the "Royal vodka" or one of its components - hydrochloric and nitric acid, ammonium chloride
Instruction
1
Collect native platinum. It is found in the gold mines. In Russia it is produced from sulphide copper-Nickel deposits. The most common individual grains of platinum. Fit and fine crystals. Find nuggets that reach a few kilograms. To include native platinum minerals, iridium, iron, palladium, osmium, rhodium, sometimes copper, Nickel and gold. The most common of them is the metal polixenes.
2
Make a solution of "Aqua Regia". Mix hydrochloric and nitric acid in the ratio 1:3,6. At the time of cooking, the liquid has no color, but after a few seconds turns yellow and then orange. She smells of chlorine and nitrogen oxides and has a strong oxidizing ability.
3
Immerse in Aqua-Regia, native platinum , and stir with a glass rod until complete dissolution. Get platinochloride acid H2PtCl6.
4
Add the solution of ammonium chloride (NH4Cl). Thus the bottom will fall deposits - chloroplatinate ammonium (NH4)2[PtCl6]. This is the method proposed in 1826, the engineers Sobolewski and lubarsky.
5
Wash the resulting precipitate and calcined in air at 800-1000 °C. however, the process of separation of nitrogen, ammonia, chlorine and platinum: 3(NH4)2[PtCl6] = 2N2 + 2NH3 + 18HCl + 3Pt. Gases evaporate, and you get the so-called "sponge". It can be extruded, calcined and forging.
6
Clean received platinum. Again, dissolve it in Aqua Regia, upset chloroplatinate ammonium and calcined residue. After that you can clean platinum be melted into bullion.
7
Arrange for a cheaper method of producing pure platinum in the high-volume production. Apply this method to French scientists Sainte-Claire Deville and Debray. Build a furnace, lined with limestone, with built-in upstairs a hydrogen torch and oxygen supply. On ignition of spongy platinum all the impurities - iron, copper, silicon and others - go into a fusible slag and absorbed in a porous wall furnace. And pure platinum will result in a special chute in the form of ingot.