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Started by elling@moltensaltsolutions.com
Can anyone please help me understand how REE electrowinning with REE fluoride salts works? The discussion on this site is helpful but I need a broader context (rock from the ground ----> REE metal product)
Can anyone please help me understand how REE electrowinning with REE fluoride salts works? The discussion on this site is helpful but I need a broader context (rock from the ground ----> REE metal product)
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Started by juanfrancisco1992 [closed]
Spikes, a fashion jewelry from the US, released a few years ago a brand new set of rings made of what they call "tisten", a mixture (notice I haven't used the term alloy) of tungsten and titanium, by far the two most popular "rare" metals used today ...
Spikes, a fashion jewelry from the US, released a few years ago a brand new set of rings made of what they call "tisten", a mixture (notice I haven't used the term alloy) of tungsten and titanium, by far the two most popular "rare" metals used today ...
Last replied to by SmartDog
You can buy an alloy of tungsten and titanium, mostly from China https://www.americanelements.com/tungsten-titanium-alloy-58397-70-9
You can buy an alloy of tungsten and titanium, mostly from China https://www.americanelements.com/tungsten-titanium-alloy-58397-70-9
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Started by Luftbert [closed]
Hi, I am a homeowner with an odd oxidation problem - hoping somebody can help. Will try to keep the story short, though it is a little interesting. For some years, a 3/4" main copper water supply pipe in my basement kept developing oxidation in a...
Hi, I am a homeowner with an odd oxidation problem - hoping somebody can help. Will try to keep the story short, though it is a little interesting. For some years, a 3/4" main copper water supply pipe in my basement kept developing oxidation in a...
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Started by sbs [closed]
About 50 years ago I obtained a cast US Mint silver ingot. The Mint had a program that permitted the public to exchange silver scrap for ingots. The ingot is noted by its serial number on a US Mint Services Deposit Memorandum and Bar Delivery Rec...
About 50 years ago I obtained a cast US Mint silver ingot. The Mint had a program that permitted the public to exchange silver scrap for ingots. The ingot is noted by its serial number on a US Mint Services Deposit Memorandum and Bar Delivery Rec...
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Started by jcpolizzi [closed]
Hardened steel firearm cartridge extractor part that is 9.0 cm long and tapers from 0.7 cm diameter to a hooked nipple of (what had once been 0.3 cm diameter but, because of an improper abusive procedure that caused damage by excessive wear) 0.25 cm....
Hardened steel firearm cartridge extractor part that is 9.0 cm long and tapers from 0.7 cm diameter to a hooked nipple of (what had once been 0.3 cm diameter but, because of an improper abusive procedure that caused damage by excessive wear) 0.25 cm....
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Started by Eng. Cosmas Wambura [closed]
Hello, i ask for the help about the formula which I may use to get the amount of chemical/reagent required in such chemicals as they are applicable in vat leaching. Sodium Cyanide Ammonium Nitrate Hydrogen Peroxide Caustic Soda Lime Sodium Su...
Hello, i ask for the help about the formula which I may use to get the amount of chemical/reagent required in such chemicals as they are applicable in vat leaching. Sodium Cyanide Ammonium Nitrate Hydrogen Peroxide Caustic Soda Lime Sodium Su...
Last replied to by SmartDog
These porportions are best determined by performing metallurgical tests. see: https://www.911metallurgist.com/blog/vat-gold-leaching-dissolution
These porportions are best determined by performing metallurgical tests. see: https://www.911metallurgist.com/blog/vat-gold-leaching-dissolution
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Started by Sam_123 [closed]
Dear Members, Could anyone help me please calculate rotary drum scrubber power & size. I searched a lot on google but was unable to get any material. Thanks & Regards Sam
Dear Members, Could anyone help me please calculate rotary drum scrubber power & size. I searched a lot on google but was unable to get any material. Thanks & Regards Sam
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Started by Andreas [closed]
Hello. Does anyone know a formula to calculate the production rate (tons/hours) of an electrowinning circuit, given the flowrate of the electrolyte (t/h) and the concentration (g/L) of the metal in the electrolyte?
Hello. Does anyone know a formula to calculate the production rate (tons/hours) of an electrowinning circuit, given the flowrate of the electrolyte (t/h) and the concentration (g/L) of the metal in the electrolyte?
Last replied to by SmartDog
It kind of depends on a lot of things you did not mention, such as what you are processing. You can always start with this: https://www.911metallurgist.com/blog/wp-content/uploads/2015/11/Design-Cop...
It kind of depends on a lot of things you did not mention, such as what you are processing. You can always start with this: https://www.911metallurgist.com/blog/wp-content/uploads/2015/11/Design-Cop...
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Started by Andreas [closed]
Hello. I'm trying to come up with a P&ID diagram of an Electrowinning circuit which has an electrolyte storage tank, pump, heat exchanger and then electrowinning cells. Is there anyone who can help me with a simple sketch of how this P&ID diagram sho...
Hello. I'm trying to come up with a P&ID diagram of an Electrowinning circuit which has an electrolyte storage tank, pump, heat exchanger and then electrowinning cells. Is there anyone who can help me with a simple sketch of how this P&ID diagram sho...
Last replied to by SmartDog
It sort of depends on a lot of things you did not mention, such as what you are processing and the rate you are processing it at.
It sort of depends on a lot of things you did not mention, such as what you are processing and the rate you are processing it at.
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Started by ca1 [closed]
Hello. Can anyone recommend a lab, preferably in North America to do some assay work on a graphite ore that we got in a drill hole? Specifically we are looking for graphite type and carbon content to see if this is worth pursuing. Thanks!
Hello. Can anyone recommend a lab, preferably in North America to do some assay work on a graphite ore that we got in a drill hole? Specifically we are looking for graphite type and carbon content to see if this is worth pursuing. Thanks!
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Started by lnldtt [closed]
Hi everyone! I've been asked to test flotation tailings in column leaching. The tailings have a P80 about 120 um, so to test in a column the particles need to be agglomerated first. The question is, is it possible to agglomerate the sample with this ...
Hi everyone! I've been asked to test flotation tailings in column leaching. The tailings have a P80 about 120 um, so to test in a column the particles need to be agglomerated first. The question is, is it possible to agglomerate the sample with this ...
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Started by Dirt Jeffe [closed]
anyone have XRF capable of reading a multi PGM sample that contains both Pd and Rh some Au? My understanding was that Pd and Rh each need a different probe. The product is fine as frog's hair and the last XRF machine (notorious for not reading PGMs) ...
anyone have XRF capable of reading a multi PGM sample that contains both Pd and Rh some Au? My understanding was that Pd and Rh each need a different probe. The product is fine as frog's hair and the last XRF machine (notorious for not reading PGMs) ...
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Started by david.menendez [closed]
Hi to everyone, I’m trying to find spare parts for an old Denver d-12 lab flotation machine. The impeller we are using has a diameter of around 7 centimeters (2-3/4”). Does anyone know where to get this kind of spares?. We have asked to Metso ...
Hi to everyone, I’m trying to find spare parts for an old Denver d-12 lab flotation machine. The impeller we are using has a diameter of around 7 centimeters (2-3/4”). Does anyone know where to get this kind of spares?. We have asked to Metso ...
Last replied to by SmartDog
Try Sepor, they sell D-12 machines and parts https://www.sepor.com/product/laboratory-flotation-machine-d-12/
Try Sepor, they sell D-12 machines and parts https://www.sepor.com/product/laboratory-flotation-machine-d-12/
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Started by Mreza555 [closed]
I'm working with a "LECO ONH836" elemental analyzer. we do not have enough calibration samples for Hydrogen. I wanted to know whether it is possible to add 2 one gram samples (5 ppm) instead of a 10 ppm sample. I assume that will work but Is it stand...
I'm working with a "LECO ONH836" elemental analyzer. we do not have enough calibration samples for Hydrogen. I wanted to know whether it is possible to add 2 one gram samples (5 ppm) instead of a 10 ppm sample. I assume that will work but Is it stand...
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Started by kati567 [closed]
Hello everyone I did not expose the crushed ore by the action of dilute nitric acid to remove the base metals. I poured chlorinated water and subjected to high temperatures, filtered, added FeSO4. Powder settled at the bottom. What d...
Hello everyone I did not expose the crushed ore by the action of dilute nitric acid to remove the base metals. I poured chlorinated water and subjected to high temperatures, filtered, added FeSO4. Powder settled at the bottom. What d...
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Started by Melih [closed]
First of all,for the processing of gold and tellurium ores,how exactly does the pos-roasting(calsine ores contain % 60- 62 Fe ) process work,what is the way to obtain tellurium. Second,which do you prefer for chemical analysis,aquea regea or fire a...
First of all,for the processing of gold and tellurium ores,how exactly does the pos-roasting(calsine ores contain % 60- 62 Fe ) process work,what is the way to obtain tellurium. Second,which do you prefer for chemical analysis,aquea regea or fire a...
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Started by Padre [closed]
Hi All, I'm looking for mineral processing icons/symbols that are available for download. Any package or libraries are welcome. Thank you
Hi All, I'm looking for mineral processing icons/symbols that are available for download. Any package or libraries are welcome. Thank you
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Started by Adimulu [closed]
We are running Gold Mill , we are using spreadsheets for metal accounting and other production reports. We are looking for sustainable data-base to avoid all the problems related to the use of spreadsheets. I need help on getting the list of proved ...
We are running Gold Mill , we are using spreadsheets for metal accounting and other production reports. We are looking for sustainable data-base to avoid all the problems related to the use of spreadsheets. I need help on getting the list of proved ...
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Started by Algev [closed]
Seeking help from knowledgeable metallurgists. I would like to make amalgam's, some of the element I would like to melt together are: Selenium Gallium Which noble metals are compatible and can melted to create an amalgam for example: Selenium an...
Seeking help from knowledgeable metallurgists. I would like to make amalgam's, some of the element I would like to melt together are: Selenium Gallium Which noble metals are compatible and can melted to create an amalgam for example: Selenium an...
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Started by dgt96 [closed]
Hello, not sure which topic to ask this question in, but here it goes. Im selling some industrial spent catalysts and my client asked if the catalyst was "roasted" or "unroasted". I had never heard this terminology. Does anybody here has experience w...
Hello, not sure which topic to ask this question in, but here it goes. Im selling some industrial spent catalysts and my client asked if the catalyst was "roasted" or "unroasted". I had never heard this terminology. Does anybody here has experience w...
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Started by Zimboskud [closed]
Hi All. I am desperately looking for a clear protocol for testing the loading of my carbons from CIP to assess how much gold is currently residing on them. Usually I send them to the lab - but it appears as though the accuracy of the labs results ha...
Hi All. I am desperately looking for a clear protocol for testing the loading of my carbons from CIP to assess how much gold is currently residing on them. Usually I send them to the lab - but it appears as though the accuracy of the labs results ha...
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Started by jasonmaguire99 [closed]
Hi all, Our ore/float concentrate contains pyrite and arsenopyrite. I require a high arsenopyrite concentrate with as little pyrite in it as possible for some leaching testwork but have not had any luck. Does anybody have any experience with thi...
Hi all, Our ore/float concentrate contains pyrite and arsenopyrite. I require a high arsenopyrite concentrate with as little pyrite in it as possible for some leaching testwork but have not had any luck. Does anybody have any experience with thi...
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Started by joshua cheyo [closed]
I used this procedure to determine specific gravity of an ore. Is the method accurate?
I used this procedure to determine specific gravity of an ore. Is the method accurate?
Last replied to by SmartDog
If the sample was a liquid, that would be correct. If the sample was a solid (several different particles) then not exactly as you need to account for the voids.
If the sample was a liquid, that would be correct. If the sample was a solid (several different particles) then not exactly as you need to account for the voids.
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Started by SSSlucin [closed]
I recently aquired several raw or uncut stones possibly moisanite or saphire have heated a few to glowing point and dropped in cold water. So my question is what other stones aside from the afore menchioned are capable of this type of therma...
I recently aquired several raw or uncut stones possibly moisanite or saphire have heated a few to glowing point and dropped in cold water. So my question is what other stones aside from the afore menchioned are capable of this type of therma...
Last replied to by SmartDog
It will depend on the the individual structure of each mineral sample. If there are any significant inclusion or fractures planes (which may not be visible) then the stone can fracture quite signifi...
It will depend on the the individual structure of each mineral sample. If there are any significant inclusion or fractures planes (which may not be visible) then the stone can fracture quite signifi...
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Started by Nick H [closed]
So I've got a project I'm working on that I need help finding a material for. I'm a fountain pen enthusiast, and I'm trying to find a material to make flexible nibs out of that would improve upon the current standard of 14 karat gold. It needs to be ...
So I've got a project I'm working on that I need help finding a material for. I'm a fountain pen enthusiast, and I'm trying to find a material to make flexible nibs out of that would improve upon the current standard of 14 karat gold. It needs to be ...
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Started by alex.gould [closed]
Hi, a customer has approached us to make new grate and 'cap' for their vibratory ball mill. The barrel is about 28" in diameter, and 36" long, using about 2000lbs of ball charge. We are hoping to get more longevity from the grate, so the idea is to f...
Hi, a customer has approached us to make new grate and 'cap' for their vibratory ball mill. The barrel is about 28" in diameter, and 36" long, using about 2000lbs of ball charge. We are hoping to get more longevity from the grate, so the idea is to f...
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677
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Started by bja2399 [closed]
As pure metal elements get colder, close to absolute zero, do their protons and neutrons lose their ability to avoid combining with other atoms especially if the system is under great pressure, say 300 GPa? Could they combine to form other elem...
As pure metal elements get colder, close to absolute zero, do their protons and neutrons lose their ability to avoid combining with other atoms especially if the system is under great pressure, say 300 GPa? Could they combine to form other elem...
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Started by Opie_Ute [closed]
We have a fan at my work, which has ~15% dilute sulfuric acid unintentionally pulled into the gas stream. The fan wheel and housing are constructed of 916L stainless steel. For many years the fan shaft had a 916L stainless steel sleeve on the portion...
We have a fan at my work, which has ~15% dilute sulfuric acid unintentionally pulled into the gas stream. The fan wheel and housing are constructed of 916L stainless steel. For many years the fan shaft had a 916L stainless steel sleeve on the portion...
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Started by Johnsonwt [closed]
Hi there, I have been going through much R&D to with a product to find one that is strong enough and rust proof. The latest is carbon steel with a zinc coating.. though salt water seems to penetrate it and cause blackening and some build up...
Hi there, I have been going through much R&D to with a product to find one that is strong enough and rust proof. The latest is carbon steel with a zinc coating.. though salt water seems to penetrate it and cause blackening and some build up...
A potentiometric titration can be considered to determine the pH. The titration involves measuring and recording the millivolts or pH after the titrant agent is added in large increments initially, an...