Gravity Separation & Concentration Methods

Gravity Separation & Concentration Methods2017-04-04T06:57:23-04:00
  • To participate in the 911Metallurgist Forums, be sure to JOINLOGIN
  • Use Add New Topic to ask a New Question/Discussion about Gravity Separation/Concentration.
  • OR Select a Topic that Interests you.
  • Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent).
    Using Add Reply allows you to Attach Images or PDF files and provide a more complete input.
  • Use Add Comment = to comment on someone else’s Reply in an already active Topic/Discussion.

Coal blending formula (1 reply)

obert cement
1 year ago
obert cement 1 year ago

what is the formula used in blending of coal to get blending ratios so as to meet a required acalorific value, ash percentage


Todd H
1 year ago
Todd H 1 year ago

Are you familiar with metallurgical balances or the term Units?

  Wt % Assay Units
Stream   Energy Density Element 1 (%) Energy Density Element 1 (%)
Feed Type A A% a% a1% A% x a% A% x a1%
Feed Type B B% b% b1% B% x b% B% x b1%
Desired Blend 100% = sum ED/100% = sum E1/100% sum ED sum E1

You can work backwards, put in your desired energy density and vary the ratios of A% and B% to until you get the right mix. In this case I have two feeds but you can have more.  This is a tabular form of simultaneous equations.



Todd Harvey - Global Resource Engineering

Please join and login to participate and leave a comment.

BUY Laboratory & Small Plant Process Equipment

We have all the laboratory and plant equipment you need to test or build/operate your plant.

ENTER our Mining Equipment' Store

We Sell EQUIPMENT for all types of Mineral Treatment PROCESSES and Laboratory Testing needs


View the Services we Provide

911Metallurgist Mineral Processing & Process Development Laboratory

We have a metallurgical test for every possible mineral type and treatment.


We can IMPROVE ALL PLANTS / Mineral Processing Engineering & LABORATORY Ore Testing

911Metallurgy Engineering

Contact us for process engineering, metallurgical investigations, plant optimization, plant troubleshooting, needs. WE “FIX” METALLURGY.

I Need Consulting Engineering Help
I Need Ore Laboratory Testing