Dewatering

Merrill Crowe Slurry Filtration Circuit Post-Agitated Leach

The object of the post agitated leach drum filtration circuit is to recover as much of the dissolved gold and silver as possible. The efficiency of recovery can be increased significantly by utilizing two successive stages of filtration such as the two stage system applied in this plant. Recovery of the precious metals is also improved … Read more

Thickener Startup & Shutdown Procedure

An EXAMPLE Startup of the thickener may occur under two sets of very different circumstances: After a major plant shutdown or the initial plant start-up, when the thickener is completely empty OR/AND After a shutdown whereby the thickener has been left full of pulp, and rakes and underflow pumps have been inoperative (such as after a … Read more

Mill Feed Thickener Operating Principles

Under normal conditions our EXAMPLE mill feed thickener rake drive will operate with the gear mechanism lowered, regardless of grinding or leaching operations. Operating lights on the mill control panel indicate whether the rakes are fully lifted, fully lowered, moving up or down, turning or stopped. An exact intermediate rake position is not indicated on … Read more

Difference Between Clarifier and Thickener

The Difference Between a Clarifier and a Thickener is subtle as they will visually look the same.  Fundamentally, thickeners and clarifiers are both used to settle solids which results in the separation of liquids and solids. Thickeners are used to concentrate solids, while clarifiers are used to purify liquids. A thickener will give you a high density … Read more

Laboratory Vacuum and Pressure Filter

The handling of wet pulp samples presents a problem to every ore dressing and metallurgical laboratory. The use of proper size and type filters with required vacuum equipment will simply and efficiently eliminate many of the difficulties. Laboratory Vacuum Filter Laboratory Vacuum Filter is available for all sizes of laboratories and continuous pilot test plants. Necessary units … Read more

Rainwater Management

NPDES permits were established under the Clean Water Act; this act that’s our Congress passed in 72 and it’s had a number of different changes along the way. But really what it was trying to do is, everybody’s heard about the Rivers on Fire where one caught on fire and that’s been used as the … Read more

Calculate the Size of RainWater Storage System

One of the most important elements of designing a proper drainage system is determining how much rainwater is falling on your property and what to do with this volume of water. Here is a list of a few things that you will need: Paper A pen or pencil A tape measure A calculator. Now that … Read more

How to Calculate Rainwater Property Runoff

Let’s teach you how to calculate and store your property’s rainwater runoff.  One of the most important elements of designing a proper drainage system is determining how much Rainwater is falling on your property and what to do with this volume of water. Here we will also provide you with the tools needed to design … Read more

Gold King Mine Waste Water Spill

The 2015 Gold King Mine waste water spill is a 2015 environmental disaster at the Gold King Mine near Silverton, Colorado. On August 5, 2015, EPA personnel along with workers for Environmental Restoration LLC (a Fenton, Missouri, company under EPA contract to mitigate pollutants from the closed mine) caused the release of toxic wastewater when … Read more