Filtrate Pump & Vacuum Filter Pumps
The last equipment that I want to talk about that is part of the filtering system is the FILTRATE PUMP and the VACUUM PUMP. The filtrate pump is the pump that removes the water that is filtered out of the concentrate. It works with the filter and vacuum pump in a circuit. How these […]
Rotary Filter Internal Piping & Manifold
This insides (Internal Piping) of a Disk or Drum Rotary Filter and its Manifold are much similar to each other. Each of the sectors are attached to what is known as the MANIFOLD. The purpose of the manifold is provide a series of passages for both the vacuum and the air. Each passage services one sector from […]
Slurry Filtering & Concentrate Filtration
The purpose of a vacuum filter is “Slurry Filtering” and therefore to remove more of the water from the concentrate, this “Concentrate Filtration” is accomplished by using a vacuum. Again for your understanding of the method you will have to know something about the design of a filtering system and of course the filter itself. […]
China Currency War
Is this a China Currency War on US or China on all others? What’s China’s End-Game: China is perhaps looking to have the Renminbi ultimately being managed against a basket of currencies as opposed to just being managed against just the USD. This could provide for more volatility going forward between the Renminbi vs. the USD. […]
Thickener Safety
The last thing that I would like to mention about thickeners is to do with their safety. In some plants fire a worker who wears his hard hat or takes foreign objects onto the catwalks above the thickeners. The reason is that if, by accident, his hard hat ended up in the thickener that thickener […]
Thickener Torque -Rakes & Drive
A little earlier I talked about the rakes of the thickener, these are long arms that extend off of the bottom of the DRIVE SHAFT. As the shaft turns the rakes will sweep the entire bed of the thickener thereby applied Torque. Each rake arm is higher at its far end than it is where […]
Thickener Operating pH and Lime for Flocculation & Improved Settling
If, for some reason, the thickener’s settling rate is too slow, as in the case of the grind being so fine or you are dealing with clay rich ore and now the concentrate stays in suspension. The thickener could be “sliming” and will produce a dirty overflow combined with a low density underflow. If this is […]
Feeding a Thickener for Good Settling and Overflow Clarity
How much you feed a thickener and how/where you feed it will determine how well slurry or concentrate settles it it as well as the level of ease or difficulty you will have at obtaining a good underflow density and overflow clarity. By using the head assay of the concentrator, and the metallurgical test results […]
Concentrate Thickener Operation
In mining, when flotation is finished with the ore, and a final concentrate has been produced, often, both products will go to a concentrate thickener before it is dried for shipping. This is a very important step so here we discuss Basic Concentrate Thickener Operation. For the mine to get its concentrate to the smelter it […]
Merrill Crowe Flowsheet
Here is a common and classic merrill crowe process flowsheet with a simple zinc precipitation chemistry. Some of the flows in this design: Too much dilution water is used Zinc dust is added after the pump No mechanical seal is present on the pump to prevent O2 entry. Learn more about the Merrill Crowe Flowsheet.