Gold Testing

There are several supplies that we sell for gold testing and I wanted to give you an overview of the kinds of things that you can expect to use and need and talk about the basics of gold testing. So, what I’ve got in front of me are some beginning supplies. We’ve got our testing … Read more

Niton XL3T XRF Analyzers

Welcome to a brief handheld XRF positive material Identification Analyzer tutorial. For complete operating and maintenance guidelines, you should always refer to the operator’s manual. These instruments use X-ray fluorescence to allow users to identify the elemental makeup of alloys and numerous other materials, to determine heavy metal content in soils, to look for lead … Read more

X-Ray Fluorescence Spectroscopy XRF

In X-ray fluorescence spectroscopy an X-ray source is used to irradiate the sample with X-ray radiation. If the energy of this radiation is sufficient, then it will interact with the atom’s inner shell electrons causing them to be kicked out. Almost immediately, a relaxation process takes place where one of the outer shell electrons fall … Read more

How HandHeld XRF Works

So, most of you who are attending today are affected in some way by regulations of consumer products or hazardous substances in consumer product manufacturing. Today we’ll be giving you two of the big regulations: RoHS and CPSIA. We’ll talk about how as a manufacturer or importer subject to regulation you can set up a … Read more

XRF X-Ray Fluorescence

X-ray fluorescence or XRF is an analytical technique that has been used for many years to determine the elemental composition of a wide variety of materials. Examples include metal alloys, minerals and petroleum products. X-rays form part of the electromagnetic spectrum. They are on the high energy side of the ultraviolet and are expressed in … Read more

Principle of XRF & XRD

But first, I want to start with a basic Principle of XRD and XRF technology and how they are similar and how they differ. So, what is X-ray fluorescence? Very simply put, X-ray fluorescence uses an excitation source to excite elements, electrons within an atom. This excitation will eject an electron from its orbital, and … Read more

Anemometer to Measure Flotation Cell Air Flow – Self Aspirating

I once used an Anemometer to Measure Flotation Cell Air Flow on Self Aspirating WEMCO machines. Overtime, operations & maintenance got lazy and never took care of cleaning the airflow supply pipe into the cell. It was clear flows were partially to completely blocked. I improvised the method and now found one the US Bureau … Read more

How to Determine Power Input in Laboratory Ball Mill

In the study of ball mill grinding at the International Experiment Station of the United States Bureau of Mines at Salt Lake City, Utah, it was desirable to measure the work input to a ball mill at the mill itself so that consideration of motor efficiency and transmission losses would be eliminated. The device adopted … Read more

Dust Scrubbers

Currently, most coal mines rely primarily on two methods for controlling dust. The first utilizes large volumes of outside air to ventilate and dilute the dust (and methane gas) to acceptable concentrations. The second method involves water used in various ways, such as water spray systems. Unfortunately, both techniques have limitations. For example, increasing the … Read more

Laboratory Scrubber

The Bureau of Mines has funded an extensive research program to develop improved scrubbers for coal mine applications. This work shows that scrubbers can offer a highly effective technique for dust control during many mining operations. In the most recent applications, these scrubbers are usually mounted on or in the mining machine, and minimum scrubber … Read more