Scrubbing is an integral washing step employed in the beneficiation of many types of ores and minerals, helping to remove contaminants and gangue and ultimately improve recovery of the target material. Rotary scrubbers are often used in this role; while a variety of equipment types …
An adequate preventative maintenance plan is a major contributing factor to maximizing the service life of a rotary drum, be it a dryer, cooler, kiln, or granulator. Despite being a rugged piece of equipment, rotary drums require a careful balance of load on mechanical components …
Rotary drums are the industry standard for everything from granulating fertilizers, to drying, cooling, and even coating them. Throughout the US – and the world – this diverse type of equipment dots the landscape at both mine sites and fertilizer production facilities of all kinds. …
Our photo this week shows a rotary ore agglomerator preparing for shipment. The drum, weighing in at around 55 Tons, is being lifted by a crane onto a base while it awaits shipment. Ore agglomerators are used in heap leaching processes around the world for …
Our photo this week shows the interior of a rotary drum with a rubber liner installed. Flexible rubber liners are often used in rotary drums to help prevent buildup caused by material sticking to itself and the sides of the drum. Rubber liners are used …
Non-pressure agglomeration, also known as tumble growth agglomeration, is a process which uses a tumbling motion and binding agent to grow material fines or powders into a spherical pellet form. Non-pressure agglomeration methods include: Pelletizing (rotary drum or disc pelletizer): a process where material fines …
As a booming global population and emerging economies put pressure on existing resources, and high grade ores become a thing of the past, mining companies are looking for technologies that will allow them to economically recover target materials, namely metals, from low-grade ore sources. One …
Today’s photo shows the gear mesh of a gear and pinion drive, the mechanism that causes a rotary drum to rotate. The face of the teeth here are worn, an indication that the gear should be replaced, or they may break off. In most cases, replacement …
This week’s photo highlights a girth gear run-out procedure in action. A black strap (pictured) is mounted along the gear’s teeth. A dial indicator follows the strap’s path, and measures the tip of the teeth along the strap. This procedure reveals the amount of wear …
Pelletizer plant process audits provide a valuable tool to plant managers struggling with changes in production, under-performance, yield, and more; even for those pelletizing plants performing well, a process audit can reveal inefficiencies that when corrected, can significantly add to the bottom line. The following …