Coking Coal Etc.
Your coal may not have a lot of phosporus,
and it bears asking what type of soift coal is it
and where was it mined?
Since you are a coke testing laboratory it would seem
your coal is the gremlim with the issues.
lzaharis ■
Re: How To Find Phosphor Content In Coke?
Well, the thing is I already know the phosphorous content. We had a third party test the levels for us. I know the levels I'm getting are low because they're lower than the levels the third party got. In fact, I'm three times too low.
I'm performing my procedure on the same exact coke that we sent to the third party laboratory. ■
Coke Testing
Originally Posted by jsr4f7
I'm performing my procedure on the same exact coke that we sent to the third party laboratory.
Others than chemicals that may be weak:
Different parts of the coal seam can have different chemical phosphorus levels you may be testing the same coke but the coal could be from another part of the seam.
Can you verify the coal that was cooked into coke came from the same mine and mining section? thats the only other option except outdated chemicals for testing.
Theres no other option than tracing the coal back to the mine, seam, and shift it was mined. ■
Phosphorus In Coal
Hi,
There is a different method for Phosphorus. You can use aquarigia and HF to dessolve the Ash. I would like to know you instrument, wavelengths, blank and calibration standards values used to set the instrument. We can further discuss it, please email your whole process on jpanchal@ajedmondco.com
Thank you,
Jignesh ■
How to Find Phosphor Content in Coke?
Hi,
I'm working on setting up a laboratory procedure to analyze the phosphorous content in coke. Unfortunately, I'm having some problems.
The procedure has me dissolving the coke with HCL and HF in a digestion bath, then complexing the Flouride with Boric Acid and using a molybdovanadate solution in order to measure the absorption in a spectrometer.
I have a few samples which have been tested at another laboratory and I've been trying out my procedure and comparing results. For some reason, I'm getting a much lower percentage of phosophorous than the other lab has reported. I can't figure out why this is.
I've been ashing the coke 60 mesh) with a process which calls for heating to 500 *C over two hours, then increasing the heat to 950 *C and holding for two more hours.
I take 0.2g of my ash and dissolve it in HCL and HF. For some reason, it doesn't seem like all of my ash is dissolving, even after sitting in a digestion bath for several hours.
Frankly I'm stumped. I'm trying out a new ashing procedure which calls for a lower temperature just in case I'm burning off the phosphorous or something in the oven.
If anybody has any experience with this sort of testing, I'd appreciate any advice!
Thank you,
Jake ■