The gold rush find gold resources near your home. How to Recycle Scrap use Gold Stripper New 2019

Hello Friends
Today I have a gold plated needle weighing 1.5 kg.
I will use Gold  Stripper chemicals for this gold extraction.
For gold rush people, this does not use all gold. Is a gold plated material. Gold, beautiful color
  How much gold is there? I will find this answer.
I use 800 ml of water.
sodium cyanide 15 gram
Gold  Stripper 15 gram
Gold Stripper must work with cyanide. Therefore can dissolve gold.  In most countries, cyanide cannot be used.
Gold Stripper is widely used in industrial gold, metal plating. In order to fix the gold plated job and want to remove gold from the work piece.
You can see that It will dissolve only gold. It is suitable for the material. Gold plating, thickness not more than 10 microns
Water that has gold dissolve will be dirty. You have to filter.
In this gold extraction case, use Zinc powder 80 grams or 4 times of quantity of gold.  And hope to have gold 20 grams. The first time, we use Zinc powder 50 grams. The second time, we use Zinc powder 30 grams, Potassium Hydroxide 110 grams per a liter of water. The first silt, we use Potassium Hydroxide 80 grams. The second silt, we use Potassium Hydroxide 30 grams. Pour water slowly, be careful Zinc powder flow with water. You can filter only Zinc powder.
How to separate gold from zinc powder. I use Nitric acid mixed with water. Ratio Nitric acid  1 water  3.
Chemical is very dangerous.  You should strictly protect in every step. You have to wear gloves, mask or protective clothing when you work.  When extracting gold finish,  you must clean thoroughly with water immediately and learn all kinds of chemicals that you used and how thoroughly protected.
I brought Sediment gold from zinc powder to boil Nitric acid mixture water. Ratio Nitric acid 3 water 1. To eliminate other metals that are left. Clean gold sediment with hot water 3 times.

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