Filter Cake Moisture Analyzer | Scale to Measure Humidity
Part of your slurry dewatering system is the production of a filter cake. Obviously that cake must have as low a moisture as possible. A great tool you can give your operator to measure, determine and monitor that concentrate filter cake humidity and control their process variable is a moisture scale like this. You just […]
How to Size a Cyclone | Hydrocyclone
How to Size a Cyclone or Hydrocyclone has a well establish step-by-step process for which Richard A. Arterburn was a pioneer. Since this paper and its hydrocyclone sizing method is becoming hard to find, I uploaded it on here. Use the 911Metallurgist Online Cyclone Design Calculator. https://www.911metallurgist.com/hydrocyclone-design-equations-and-sizing-parameters-calculations I also include an Excel file prepared by Alex […]
Hydroxamate Collectors
Let me point you to two good papers on the flotation of mixed copper oxide and sulphide minerals with xanthate and hydroxamate collectors. A great detailed thesis called “An Investigation of Copper Recovery from a Sulphide-Oxide Ore with a Mixed Collector System” and one called “Flotation of mixed copper oxide and sulphide minerals with xanthate and […]
Bond Work Index Formula-Equation
What is the Bond Work Index Formula-Equation? In case you had forgotten, here is a classic: You can read all the details of this now “Biblical” grinding power requirement calculation formula in Fred Bond’s original paper. You can also review the step-by-step Bond Work Index Test Procedure I posted here. See this useful summary Table of Bond Work […]
Compare Flotation Test Results
Learning how to compare flotation test results made easy: One set of test from Lab A is displayed by the red dots and compare to the blue and/or green data set from Lab B. Lab B is red inferior. Here are the comparative Grade VS Recovery Curves. Metallurgical Efficiency: One of the most important and basic […]
Remove Trash from Flotation Circuit via Screen-Box in Grinding Circuit
An on-stream analyzer and small regrind cyclones (their small 1/2″ Apexes) were being plugged by trash coming from the underground mine in the form of wood and plastic. A simple solution was to install a homemade screen box on the cyclone overflow prior to feeding flotation. The operator cleans it daily, thanks to the overhead […]
Stoichiometric Assays to Mineral Conversion Factors – Stoichiometric
Use the conversion factors in this Table which uses Stoichiometry to approximately convert metal assays to minerals. If you know your sample has only Chalcopyrite as a copper specie, you multiple the %Cu it assays by 2.88 to get the %Chalcopyrite of the sample.
Slurry Stream Sample Cutter Dimensions for Grinding Circuit Survey
A good grinding circuit survey (and flotation circuit sampling) is only as good as the sample cutter used for each slurry stream. Correct sampler volume and opening size insures your sample is representative of the concentrator stream you are testing. Here is a good suggested design with opening dimensions. You need to add the handle […]
Schuhmann Plot
A Schuhmann Plot help smooth out particle size data. I attach a graph created for a settling test of flotation concentrates. You draw/create a Schuhmann Plot using the details found in https://technology.infomine.com/enviromine/ard/mineralogy/Size%20&%20Liberation.htm and https://www.chem.mtu.edu/chem_eng/faculty/kawatra/CM2200_2009_HW_3_sizedist.pdf
How to Estimate the Cost of Building a Mine
Here is a Table to help or show you how to estimate the cost of building a mine in today’s market. You can roughly estimate how much is the cost of building a new mine by its rated capacity. The daily plant tonnage MULTIPLIED by $5000 to $25000 of the 2013 US$. A good […]