How to make the perfect sandwich men
Each of us in the shower a bit Plyushkin and certainly many accumulated mass of unnecessary old electronics, which must be thrown out, and the hand is not raised. Engineer and chemist Joseph Murchinson found a way out of this situation. He has published a step by step instructions on how to smelt gold from old and unwanted electronic devices.
Each electronic card includes a few milligrams of platinum, gold, silver and copper, which may be optionally extracted from the electron collector.
Most profitable gold mine. Joseph Murchinson said that the older the electronics - the more there may be gold. First you need to collect all the gold-bearing parts together. In a few months everyone can gather up a lot of these parts. The photographs show that Joseph was able to collect three months.
Details need to sort and using a magnet to remove the gilded steel, which requires a separate process technology. Peeled dirt auriferous board fall for one week in a solution of hydrochloric acid (two parts) and hydrogen peroxide (one part). Daily pot of acid needed to stir slightly.
A week later the solution darkens and becomes visible floating flakes exfoliated gold. They must pass through a coffee filter and rinse with methanol.
Next you need to fuse the scales in one bar. Melting point of gold is 1063 ° C, so that the usual burner task failed. But if the processed gold sodium tetraborate (borax), the melting temperature decreases.
Received ingot, you need to weigh it for profit estimates. Here's a bar weighs a little more than a troy ounce (31.1 grams) and is from 600 to 1600 dollars. Good increase in scholarships for three months of work.
