Hi everybody, long time no posting till today!
Yesterday, I got three kinds of sample. One is black sand. I send it to a Lab. They pulverized it to very fine mesh, they took 30 grams of it and then fire assayed with Lead Oxide.
After that, the Lead Button was burn under 950 degree Celcius for 8 hours until the lead button became prills.
Then they leached the leftover prill in Aqua Regia. The solution was then analyzed by ICP machine made by Thermo Scientific.
The result is 29ppm of Au. The Black sand is dominated by Fe.
Now, I want to make this process, which need your comments:
1. Pulverized the black sand until 300mesh.
2. Concentrate the pulverized with specific gravity equipment.
3. Clean the base metals with single acid, plus peroxide to fasten and strengthen the process.
4. Leach with AR.
Or, optional:
1. Pulverized the black sand until 300mesh.
2. Leach with Cyanide.
Need your comments and suggestions.
Yesterday, I got three kinds of sample. One is black sand. I send it to a Lab. They pulverized it to very fine mesh, they took 30 grams of it and then fire assayed with Lead Oxide.
After that, the Lead Button was burn under 950 degree Celcius for 8 hours until the lead button became prills.
Then they leached the leftover prill in Aqua Regia. The solution was then analyzed by ICP machine made by Thermo Scientific.
The result is 29ppm of Au. The Black sand is dominated by Fe.
Now, I want to make this process, which need your comments:
1. Pulverized the black sand until 300mesh.
2. Concentrate the pulverized with specific gravity equipment.
3. Clean the base metals with single acid, plus peroxide to fasten and strengthen the process.
4. Leach with AR.
Or, optional:
1. Pulverized the black sand until 300mesh.
2. Leach with Cyanide.
Need your comments and suggestions.