Building A Portable Gold Mill
November 2021 by Chris Ralph
Through the milling process, the rock must be crushed and the values extracted. Let’s break down our discussion into the different parts and elements of the mill…
I love to dry wash old nugget patches found by detector operators, and I have found my fair share of gold dry washing those areas. I have also found a few nuggets using a detector on the bedrock exposed by dry washing the patches.
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
Trommels come in two basic sections. The first section is called the scrubber unit. The second is the punch plate, where the gravels and ore of a specified size drop out into a variety of sluice box recovery units.
We were met with a plethora of mechanical problems with the dry washer and even a few with the excavator that were at times frustrating, but we were in this for the long haul, so we needed to solve these problems and move forward.
The next hurdle to jump was whether the trommel motor would start again after sitting on the desert for six years without being started. The last time it had taken a three foot pipe wrench to bust it loose.
Even though they have put down thousands of dollars, the buyers often stop paying on their claims part way through the process after they realize they’ve been duped, but the company just sells it again to another buyer.
Even if you are not ready to cash in right now, it might be good to evaluate your options and make a plan of action so when that day comes you know exactly what to do.
The Bawl Mill • Ask The Experts - What is “flotation” and what type of assay do I need? • Ask The Experts - Easier way to break down compacted clays? • Ask The Experts - Where can I get geological maps? • Ask The Experts - Is there gold under the old cobble piles? • Ask The Experts - Can you help me understand the gold deposition in this area of Wyoming? • Cherry-Picking for Gold Nuggets • Using A Blasting Machine in Rock Breaking • Gold Prospecting for Better or Worse: Tangling With A Desert Monster • Another Prospecting Adventure: Coulterville • Seven Important Attitudes for the Successful Prospector • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices