Xinhai tailings dry stacking technology is mainly applied to the dewatering and concentrating of mineral tailings in the mineral processing plants. To reach the aim of tailings dry stacking and avoiding environmental pollution, it is the essential technology of green mine.
Phosphate Flotation Product Line is applied for complex structure phosphate with fine particle distribution, closed embeddedness relationship, difficult monomer dissociation, etc.
Barite is fragile and like a big tube. The separation methods of Xinhai are generally gravity separation, magnetic separation and flotation.
Alluvial gold processing solution mainly applies to processing alluvial gold with a large volume of gangue minerals. Alluvial gold processing is a set of mining processes, including crushing and screening, desliming stage, separating stage, etc.
Scratch testing is one of the oldest methods known to man for testing the karat of gold. In experienced hands a scratch test is sensitive to within about +/ 1/2 karat or about 2%. In the hands of a novice sensitivity is more likely to be about +/12 karat. Kits come complete with instructions Gold Scratch Test Instructions. These kits are for testing gold silver and platinum.
Bleachy Keen Chemical Testing One type of chemical test you can do is using bleach. If the jewelry is genuine silver you will see tarnishing almost instantly. This is because the bleach hastens the oxidation process and creates that dark patina that you see on antique or artisan jewelry.
Simply letting the vinegar touch your gold piece is enough to test it. 4 Let the vinegar sit for 15 minutes. The acid in the vinegar takes a couple of minutes to react with gold and other substances.
Use the silver Acid Test to see the amount of silver content in the item. A few drops on the item will reveal some details based on the color. If the acid turns bright or dark red it is likely that you have fine or sterling silver. If acid turns brown silver is 80% silver.
Get here electronic precious metal tester gold testing machines and a broad selection of gold silver and platinum acid test kits. Our mission is to help everyone involved in the gold silver or platinum trade detecting fake and counterfeit gold...
Genuine gold will stand up to your attempt to conduct a nitric acid test at home. Make a tiny mark on the piece of gold to penetrate the surface. Drop a small amount of liquid nitric acid on that scratch and wait for a chemical reaction. Fake gold will immediately turn green where the acid is. Goldoversterling silver will become milky in appearance.
The ping test allows you to confirm the authenticity of your bullion by assessing its tonal quality. If it is composed from genuine silver or gold the bullion piece should produce a distinct chime when struck. Begin by obtaining a small nonabrasive piece of metal. Gently strike it against the bullion piece.
Holding a coin or round between fingers or in the palm of your hand makes the results even more noticeable as the silver rapidly cools to your touch. Test 5 Silver Gold Acid Test. Investors can purchaseinexpensive acid test kits for gold and silver. Watching the color change in a drop of acid can reveal whether or not a sample is genuine.
Get here electronic precious metal tester gold testing machines and a broad selection of gold silver and platinum acid test kits. Our mission is to help everyone involved in the gold silver or platinum trade detecting fake and counterfeit gold...
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