Low Molybdenum Recovery in Copper-Moly Flotation Circuit

Poor Copper Moly Separation

In a flotation locked cycle test, a poor/low moly recovery was obtained at 47.3% as it appeared that molybdenum had not reached equilibrium. The calculated head grade trend, shown in Figure 8-28 indicates that the moly and most of the other elements had not reached convergence when the test was terminated. Figure 8-29 shows the […]

How To Use Mercury To Recover Gold

Warning

Forever and ever, mercury has been used to recover gold, fine gold in particular.  When it comes to chemicals like Hg, one must be careful. THE DANGERS OF MERCURY AND NITRIC ACID Mercury and nitric acid can kill if swallowed. Nitric acid can be absorbed through the skin, causing nitric acid poisoning. WEAR RUBBER GLOVES! […]

Separating Gold And Silver Dore Bars With Nitric Acid

Separating Gold And Silver Dore Bars With Nitric Acid - 911Metallurgist

A dore bar is the metal that comes from the slag that has been fired and cooled. Place dore bar into a crucible. Fire in a furnace or oven. When using a muffle furnace, fire on high. It is ready when the metal is melted and looks like honey with no lumps in it. Pour […]

Recovering Silver from Photographic Materials

Recovering Silver from Photographic Materials - 911Metallurgist

The Dangers Of Nitric Acid Nitric acid can kill if swallowed! Nitric acid can be absorbed through the skin, causing nitric acid poisoning. WEAR RUBBER GLOVES! Always use nitric acid in a well-ventilated area. Do not breathe the fumes! Nitric acid can ruin your clothes and shoes. Always add nitric acid to water. Never add […]

How To Use Aqua Regia To Purify Gold

How To Use Aqua Regia To Purify Gold - 911Metallurgist

THE DANGERS OF AQUA REGIA:  When adding aqua regia to ore, there can be use a red gas given off; THIS RED GAS CAN KILL Sometimes the ore will bubble over, so watch it carefully. Use the aqua regia in an open area and it to the ore very slowly. Aqua regia cannot be boiled […]

Fluxing And Smelting Silver Ore

Fluxing And Smelting Silver Ore - 911Metallurgist

Equipment Used For Firing/Smelting Ore Furnace Or Oven For Firing/Smelting: It must heat to 1950 degrees F for gold and 2100 degrees F for silver. A muffle furnace is best. It fires to about 2300 degrees F and the ingredients can be easily added to the ore while firing. Crucible: Clay or graphite crucible to use in […]

Nitric Acid To Purify and Separate Silver/Gold

Nitric Acid To Purify and Separate Silver/Gold - 911Metallurgist

THE DANGERS OF NITRIC ACID Nitric acid can be absorbed through the skin, causing nitric acid poisoning. WEAR RUBBER GLOVES! Nitric acid cannot be boiled or simmered in the house or where it is not well ventilated. It causes nitric poisoning. You will hurt in every joint of your body and it can kill you. […]

How To Clean Gold with Nitric Acid

How To Clean Gold with Nitric Acid - 911Metallurgist

Gold acts like a sponge and absorbs nitric acid. This enables the nitric acid to clean the gold, such as gold nuggets or free gold taken from black sands. Most gold found in nature contains other metals, but some of these cannot be taken down in nitric acid (such as the platinum family). First; The […]

How To Use Nitric Acid To Purify Silver

How To Use Nitric Acid To Purify Silver - 911Metallurgist

Here is the recipe/method if you want to use Nitric Acid To Purify Silver: First; The Dangers of Nitric Acid Place the silver in a beaker or Pyrex container. Add 3 parts distilled water to 1 part nitric acid. Place on stove or hot plate and simmer until all of the metals are gone. Take un-iodized […]