Click below for answers to the following frequently asked questions:
About traditional Aqua Regia
- What do you mean by “current” Aqua Regia technologies?
- How do you get the gold and platinum metals out of the two acid mixtures when using Aqua Regia?
- What are the pros and cons of current Aqua Regia methods?
About Alchemy Rich Solutions
- What is the technology used by Alchemy Rich Solutions?
- How are the gold and platinum metals extracted out of the patented Alchemy Rich Solutions liquid mixture?
- What are the pros and cons of the process used by Alchemy Rich Solutions?
- Would you put both the “Pros and Cons” for both processes into a table please?
- What do you think is the key point of your technologies?
- How do you compare yields of precious metals of your patented processes with current Aqua Regia?
- How do you compare costs of your special technologies? The current Aqua Regia process, for instance, uses one of the least expensive chemicals on the market...
Other etching processes
- What are the pros and cons of using cyanides?
- What are the pros and cons using potassium or sodium chloride (KCl or NaCl) /nitric acid (HNO3) liquid mixture for etching gold?
- What are the pros and cons using potassium iodide/iodine (KI/I2) liquid mixture for etching gold?
- I hear some people use thiourea with sulfuric acid and iron (III) sulphate for etching/leaching gold? What are the pros and cons?
- I hear there is a “new” Aqua Regia process that uses Thionyl Chloride and Dimethylformamide or pyridine to selectively etch gold from surfaces. What are the pros and cons of this?
Specific requirements you may have
- Is it possible to further upscale the purity of 99.99% gold coming from the processes used by Alchemy Rich Solutions?
- Is it possible to dissolve (etch) and separate silver from gold in alloys with silver content higher than 15% through your patented technologies? I hear it is extremely difficult to do this with traditional Aqua Regia.
- Is it possible to dissolve (etch) and separate gold from tin and/or tantalum in their alloys through the Alchemy Rich Solutions process?
- Can you name some more difficult depositions of precious metals that were dissolved (etched) and separated by your patented technologies?
- Do you really mean the indium coming from the Alchemy Rich Solutions process does not require further electrochemical purification? Everybody seems to use electrochemical processes for indium.
- Can the Alchemy Rich Solutions process separate indium from copper and gallium and maybe selenium (CIG/CIGS)?
- You have mentioned purities of gold, platinum, and indium coming from the Alchemy Rich Solutions process. How does it perform with palladium or silver?
- Can you remove gold and/or platinum from difficult substrates like copper or aluminum through your patented technologies?
- What other substrates/surfaces can the Alchemy Rich Solutions process remove gold from?
- Do you have a special technology to recycle precious metals from eScrap (computer and/or cell phone motherboards, etc.)?
- Do you have a special technology to recycle precious metals from electronic chips?
- Do you have a special technology to recycle precious metals from wafers?
- I have a polymer with electronic gold circuits that are trapped inside of a polymer sandwich (glucose meter test strip as an example). Do you have a solution for that?
- Do you selectively etch (dissolve) only depositions with precious metals? How about etching away non-precious metals/compounds while preserving the substrates?
- What is the non-HF technology you are using for cleaning shields from the coating systems of producers of photovoltaic cells?
- Is it a true statement that your strategy of “recycling precious and other metals in remote locations, for example, with simple chemical processing setup and with little investment” can be used for extraction of precious metal ores and/or their tailings?
- Can you recycle silver from X-ray films?
- Can you recycle silver from medical gauze?
- Can you recycle indium from ITO (Indium Tin Oxide)?
- Have you selectively removed some depositions from qartz by use of wet etching chemistry?
What do you mean by “current” Aqua Regia technologies?
The current Aqua Regia (King’s Water or Royal Water) is a liquid mixture of hydrochloric (HCl) and nitric(HNO3) acids. It is used to purify and/or separate gold and platinum metals by dissolving them into chloroauric acid and chloroplatinic acid.
How do you get the gold and platinum metals out of the two acid mixtures when using Aqua Regia?
To separate and purify the two metals, the two acids need to be separated. This is usually carried out by reduction of chloroauric acid into metallic gold and by evaporation of most of the remaining liquid mixture and changing the chloroplatinic acid (dissolved in the liquid mixture) into the ammonium hexachloroplatinate (insoluble in the liquid mixture). Then, both the reduced gold and the platinum salt are repurified to reach 99.99% purity. After which, the hexachloroplatinate is heated under a stream of hydrogen to produce platinum sponge.
What are the pros and cons of current Aqua Regia methods?
The pros:
1) It is inexpensive (it uses one of the least expensive chemicals on the market).
2) It is being used all around the World since the 14th
The cons:
1) It does dissolve (etch) other metals, such as the substrate upon which gold or platinum is deposited for example. If gold and/or platinum are deposited onto a substrate and Aqua Regia is used to purify and/or separate the gold and platinum metals, and the desire is to save or preserve the substrate, Aqua Regia cannot be used.
2) The desired 99.99% gold usually requires repurification of the reduced gold (see FAQ above). This additional step results in higher loss of gold.
3) If 99.999% gold is desired; usually the Wohlwill process electrolytic process is used. It requires quite an investment and is done through specialty companies.
4) The desired 99.99% platinum usually requires repurification of the ammonium hexachloroplatinate(see FAQ above). Again, every additional step results in higher loss of platinum.
5) Further, the ammonium hexachloroplatinate is considered an occupational hazard.
6) The final step to obtain platinum metal includes evaporation and heating under a stream of hydrogen, which also requires quite an investment and is done through specialty companies.
What is the technology used by Alchemy Rich Solutions?
Our patented solutions are a liquid mixture of an acid with some organic complexing agents, used to separate and/or purify gold and platinum metals by dissolving them into organic complexes of gold and platinum. For more information, visit our Technologies page.
How are the gold and platinum metals extracted out of the patented Alchemy Rich Solutions liquid mixture?
To separate and purify the two metals, the two organic complexes need to be separated. This is carried out by reduction of the organic complex of gold into metallic gold and by biosorption of the organic complex of platinum onto
yeast. The yeast, together with the bioabsorbed platinum organic complex, is then burned down to platinum sponge. Both the gold and the bioabsorbed platinum are obtained in the very same processing tank where the metals had been dissolved originally. With our patented technologies, both the reduced gold and the platinum sponge do not usually need to be repurified to reach 99.99% purity.
What are the pros and cons of the process used by Alchemy Rich Solutions?
The pros:
1) It does not harm a variety of other metals and substrates. So, if gold and/or platinum are deposited onto a substrate that needs to be saved and/or preserved, our patented technologies can be used.
2) The desired 99.99% gold usually does not need repurification of the reduced gold. So, the pure gold is usually obtained directly (see FAQ above).
3) If 99.999% gold is desired; there is a simple and straightforward “gold purity upscale” technology available. This technology does not need any investment and it can be carried out in remote locations, for example, with little to simple chemical processing set-up.
4) The desired 99.99% platinum usually does not require repurification of the platinum sponge (see FAQ above). The pure platinum sponge is usually obtained directly.
5) The organic complexes of platinum are not reported as occupational hazards. People working with our solutions are not exposed to platinum complexes. The platinum complex is bioabsorbed from the liquid mixture of the original processing tank and dried out and burned down in one step in a simple furnace.
6) The final step to receive platinum metal – burning down the bioabsorbed platinum complex - requires investment of a simple furnace only. It can be carried out in remote locations, for example, with little to simple chemical processing set-up.
The cons:
1) It is a bit more expensive than the current Aqua Regia process. However, the added costs are recouped due to the purity and quantity of the precious metals recycled and recovered. Additional savings are also obtained by saving the substrate.
2) It is not widely known yet, which is precisely why we have put these questions and answers for your review.
Would you put both the “Pros and Cons” for both processes into a table please?
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Aqua Regia process - Cons |
Alchemy Rich Solutions process - Pros |
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It dissolves (etches) other metals as well, especially substrates. If gold and/or platinum are deposited onto a substrate that needs to be saved or preserved, Aqua Regia cannot be used. |
It does not harm a variety of other metals and substrates. If gold and/or platinum are deposited onto a substrate that needs to be saved and/or preserved, our patented technologies can be used. |
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The desired 99.99% gold usually requires repurification of the reduced gold (see FAQ above). Every additional step results in higher loss of gold. |
The desired 99.99% gold usually does not need repurification of the reduced gold. The pure gold is usually obtained directly (see FAQ above). |
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If 99.999% gold is desired; usually the Wohlwill process electrolytic process is used. It requires additional investment and is done at specialty companies. |
If 99.999% gold is desired; there is a simple and straightforward “gold purity upscale” technology available. This technology does not need any investment and it can be carried out in remote locations, with little to simple chemical processing set-up. |
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The desired 99.99% platinum usually requires repurification of the ammonium hexachloroplatinate (see FAQ above). Again, every additional step results in higher loss of platinum. |
The desired 99.99% platinum usually does not require repurification of the platinum sponge (see FAQ above). The pure platinum sponge is usually obtained directly. |
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The ammonium hexachloroplatinate is considered an occupational hazard. |
The organic complexes of platinum are not reported as occupational hazards. People working Alchemy Rich Solutions technologies are not exposed to platinum complexes. The platinum complex is bioabsorbed from the liquid mixture of the original processing tank and dried out and burned down in one step in a simple furnace. |
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The final step to obtain platinum metal includes - evaporation and heating under a stream of hydrogen – which requires quite an investment and is done at specialty companies. |
The final step to receive platinum metal – burning down the bioabsorbed platinum complex - requires investment of a simple furnace only. It can be carried out in remote locations, with little to simple chemical processing set-up. |
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Aqua Regia process - Pros |
Alchemy Rich Solutions process - Cons |
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It is inexpensive (it uses one of the least expensive chemicals on the market). |
It is a bit more expensive than the current Aqua Regia. |
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It is being used all around the World since 14th century. |
Not widely known yet. |
What are the pros and cons of using cyanides?
The pros:
(1) The cyanides do not dissolve (etch) many metals but mostly gold. So they are convenient when there is a “naked“ layer of gold deposited onto some substrates. Naked, meaning that it is not encapsulated or trapped between other metallic layers.
The cons:
(1) The inorganic cyanides are highly toxic.
(2) The cyanides work on “naked“ gold layers only (naked that it is not encapsulated or trapped between other metallic layers). So if there is a layer of gold buried underneath layers of other metals, the gold does not dissolve and it is lost, which reduces the yield significantly.
What are the pros and cons using potassium or sodium chloride (KCl or NaCl) /nitric acid (HNO3) liquid mixture for etching gold?
The pros:
1) The etching mixture is just a weaker Aqua Regia. The current Aqua Regia’s hydrochloric acid (HCl) was replaced by its sodium or potassium salt in this case. It is friendlier to stainless steel surface, for example, and the over-etching becomes visible during repeated etching.
The cons:
1) Slow on dissolution of gold, and either extremely slow or impossible to dissolve platinum.
2) All of cons that apply to Aqua Regia processes (please see the FAQs above).
What are the pros and cons using potassium iodide/iodine (KI/I2) liquid mixture for etching gold?
The pros:
1) The KI/I2 liquid etching mixture does not dissolve (etch) many metals but mostly gold. It is convenient when there is a “naked” layer of gold deposited onto some substrates. “Naked” meaning that it is not encapsulated or trapped between other metallic layers.
The cons:
1) The potassium iodide/iodine (KI/I2) liquid etching mixture works on “naked” gold layers only (that is, not encapsulated or trapped between other metallic layers). If there is a layer of gold buried underneath layers of other metals, the gold does not dissolve and it is lost, which reduces the yield significantly.
2) It does not work on platinum.
3) It is a technology that is more suited for lab scale. Since the etching/complexing agent is created in the reaction mixture (in situ) after the chemicals are combined, it is difficult to control the reaction in a larger scale.
4) Both chemicals are expensive.
5) The dissolution of the iodine when preparing the reaction mixture is problematic.
6) The reaction mixture is replenished every time the process is run, which adds significant costs.
7) Using this method produces a toxic waste solution.
I hear some people use thiourea with sulfuric acid and iron (III) sulphate for etching/leaching gold? What are the pros and cons?
The pros:
1) The thiourea, SC(NH2)2/sulfuric acid, H2SO4/iron (III) sulphate, Fe2(SO4)3 liquid etching mixture does not dissolve (etch) many metals but mostly gold. It is convenient when there is a “naked” layer of gold deposited onto some substrates. “Naked” meaning that it is not encapsulated or trapped between other metallic layers.
The cons:
1) The thiourea, SC(NH2)2/sulfuric acid, H2SO4/iron (III) sulphate, Fe2(SO4)3 liquid etching mixture works on “naked” gold layers only (that is, not encapsulated or trapped between other metallic layers). If there is a layer of gold buried underneath layers of other metals, the gold does not dissolve and it is lost, which reduces the yield significantly.
2) It does not work on platinum.
3) It is a technology that is more suited for lab scale. Since the etching/complexing agent is created in the reaction mixture (in situ) after the chemicals are combined, it is difficult to control the reaction in a larger scale.
4) The biggest challenge of this reaction is to keep the thiourea reacting (i.e., dissolved). It inevitably disintegrates into sulphur. The sulphur covers the surface of gold and the etching stops.
5) The reaction mixture needs to be refreshed to ensure the process works.
I hear there is a “new” Aqua Regia process that uses Thionyl Chloride and Dimethylformamide or pyridine to selectively etch gold from surfaces. What are the pros and cons of this?
The pros:
1) It can etch gold deposited onto platinum surfaces and/or surfaces containing platinum.
The cons:
1) The Thionyl chloride Thionyl Chloride (SOCl2) is a reactive compound that can violently and/or explosively release dangerous gases upon contact with water and other reagents. The industrial production of Thionyl Chloride is controlled under the Chemical Weapons Convention (Schedule 3). That is one of the reasons it is used with DMF (Dimethylformamide) or pyridine (C5H5N). The DMF (dimethylformamide) itself has been linked to cancer in humans, and it is thought to cause birth defects. The pyridine (C5H5N) is linked to health issues as well.
2) The chemicals are expensive.
3) Since toxic gasses may be released, a heavy containment reaction vessel is needed, i.e., there is a significant investment necessary.
4) Based on the safety issues of the process, very experienced operators are needed.
Is it possible to further upscale the purity of 99.99% gold coming from the processes used by Alchemy Rich Solutions?
Yes, it is. The upscaling technology is available and allows the gold to reach 5N purity. It is simple and straightforward, and no electrochemistry is being used (i.e., no investment is needed). The technology does not require investment into an electrochemical separation (see the Wohlwill process in FAQs above) or further purification of gold.
Is it possible to dissolve (etch) and separate silver from gold in alloys with silver content higher than 15% through your patented technologies? I hear it is extremely difficult to do this with traditional Aqua Regia.
Yes, it is possible. Since there is an inorganic salt of silver and organic complex of gold created in the liquid mixture (in situ) after the dissolution of both metals in our patented process, the separation of the silver salt from the organic complex of gold is quantitative. Therefore, you get back fully separated gold and silver that is equal to (with some negligible loss) that contained in the Au/Ag alloy that you started with, which is not possible with traditional Aqua Regia. This technology does not require either investment of electrochemical separation equipment (see the Wohlwill process in FAQs above) or the further purification of gold.
Is it possible to dissolve (etch) and separate gold from tin and/or tantalum in their alloys through the Alchemy Rich Solutions process?
Yes, it is. Since there is an inorganic salt of tin and/or tantalum and organic complex of gold created in the liquid mixture (in situ) after the dissolution of metals in our patented process, the separation of the metal salts from the organic complex of gold is quantitative. Therefore, you get back fully separated gold and tin or tantalum that is equal to (with some negligible loss) that contained in the alloy that you started with, which is not possible with traditional Aqua Regia. This technology does not require either investment of electrochemical separation equipment (see the Wohlwill process in FAQs above) or further purification of gold.
Can you name some more difficult depositions of precious metals that were dissolved (etched) and separated by your patented technologies?
We have been able to etch and quantitatively separate mixtures (alloys) of silver/gold/indium and gold/platinum/palladium and silver/gold/platinum/palladium in any ratios of the metals from different surfaces with our patented solution. This means that whatever amount of metals dissolved in the solution that Atomic Absorption Spectroscopy (AAS) analysis yields, that is the amount you will recoup (with some minor processing losses). This was a major breakthrough and is not possible with current art Aqua Regia. Neither of the technologies require either investment in electrochemical separation equipment or further electrochemical purification of gold and/or platinum and/or palladium and/or indium and/or silver.
Do you really mean the indium coming from the Alchemy Rich Solutions process does not require further electrochemical purification? Everybody seems to use electrochemical processes for indium.
Yes, not only does the indium not require any electrochemical method for separation or purification, but we also do not use vacuum furnaces to smelt indium. Our novel process (patent pending) delivers metallic indium in min. 99.9% purity with no need to invest into electrochemical separation and purification of indium or a vacuum furnace for smelting indium.
Further added value is realized, as we can recycle and obtain indium in high purity in remote locations, for example, with simple chemical set-ups and no need for an entire plant, so you can go to the work, rather than bring the work to the plant.
Can the Alchemy Rich Solutions process separate indium from copper and gallium and maybe selenium (CIG/CIGS)?
Yes, not only can we selectively etch (no damage to the substrate/surface) indium from aluminum and/or stainless-steel substrates/surfaces (selectively = no damage to the substrate/surface), but we can also separate indium from copper, gallium, and selenium. Our novel technology (patent pending) delivers metallic indium in min. 99.9% purity with no need investment for electrochemical separation equipment, the purification of indium or a vacuum furnace for smelting indium. We can recycle and obtain indium in high purity in remote locations, for example, with simple chemical processing set-up.
You have mentioned purities of gold, platinum, and indium coming from the Alchemy Rich Solutions process. How does it perform with palladium or silver?
What we have stated on indium is valid for palladium as well. Not only does our process for palladium require no electrochemical method for separation or purification, but we do also not use a furnace to smelt palladium either. Our novel technologies (patent pending) deliver metallic palladium in min. 99.9% purity with no need to invest into electrochemistry or a furnace.
Silver, on the other hand, when processed via the Alchemy Rich Solutions process becomes an inorganic salt. This salt is then treated by standard industry means (smelting with carbonates followed by electrochemical purification). We have introduced a novel method, which bypasses electrochemistry that is like the one used for indium and palladium (see above). The delivery of min. 99.9% metallic silver then requires neither an electrochemical process nor a furnace.
We can recycle and obtain precious and other metals in high purity in remote locations, for example, with a simple chemical processing set-up.
Can you remove gold and/or platinum from difficult substrates like copper or aluminum through your patented technologies?
Yes, the Alchemy Rich Solutions process protects the substrate and/or surface while dissolving the gold and/or platinum.
What other substrates/surfaces can the Alchemy Rich Solutions process remove gold from?
We have successfully dissolved (etched) gold layer from PET (Polyethylene terephthalate) and other plastic films and glass (stainless steel and other substrates/surfaces were mentioned above). Not only have we dissolved gold, but also mixtures of gold with indium and silver and palladium. We were then able to separate all the metals completely, while leaving the substrates/surfaces undamaged and intact.
Do you have a special technology to recycle precious metals from eScrap (computer and/or cell phone motherboards, etc.)?
Yes, we have invented two technologies that can be used:
1) “Sequential extraction of metals and precious metals” from eScrap, followed by the use of our Alchemy Rich Solutions process.
Solutions patented process - Besides gold, platinum, silver, palladium, and indium, we can recycle other metals (copper, nickel, and other metals of choice). Quite often, it is more convenient to obtain the “other” metals in the form of their inorganic salts or organic complexes. The market price of the salts/complexes can be higher than that of any one metal.
2) “Chemical milling” of eScrap, followed by the Alchemy Rich Solutions patented process which dissolves (etches) the metals of the eScrap. Besides gold, platinum, silver, palladium, and indium, we can recycle other metals (copper, nickel, and other metals of choice). Quite often, it is more convenient to obtain the “other” metals in form of their inorganic salts or organic complexes. The market price of the salts/complexes can be higher than that of any one metal.
And – as mentioned above – our technology does not require special furnaces to recycle palladium, silver, or indium (patent pending). We can recycle and obtain the precious and other metals of high purity in remote locations, for example, with simple chemical processing set-up.
Do you have a special technology to recycle precious metals from electronic chips?
Yes, we use the Alchemy Rich Solutions patented process (see the FAQs above).
Do you have a special technology to recycle precious metals from wafers?
Yes, we use the Alchemy Rich Solutions patented process (see the FAQs above). Since the wafers – after the precious metals have been selectively etched away – stay intact, we can return the wafers to the production process and recycle the wafer and save them from being scrapped.
Is it a true statement that your strategy of “recycling precious and other metals in remote locations, for example, with simple chemical processing setup and with little investment” can be used for extraction of precious metal ores and/or their tailings?
Yes, our technologies, especially the sequential extraction of precious metals, can be done in remote locations where tailings are discarded, for example, with simple chemical processing set-up. It was a challenge to make our technologies robust for our clients to obtain precious and other metals of high purity using a simple, affordable, and portable technology for remote usage conditions.
I have a polymer with electronic gold circuits that are trapped inside of a polymer sandwich (glucose meter test strip as an example). Do you have a solution for that?
Yes, we remove the polymer(s) by chemical means, leaving the metallic gold circuit intact. In other words, the “substrate” and “deposition” change typical positions as we selectively etch away the polymer and leave free standing gold which was the deposition. The metallic gold circuits are then directly smelted into gold bullions.
Do you selectively etch (dissolve) only depositions with precious metals? How about etching away non-precious metals/compounds while preserving the substrates?
Yes, we have developed technologies for selective wet etching of non-precious depositions from substrates(selective = leaving the substrate intact) as well. Please see some examples below:
1) Selective wet etching of chrome/ copper and chrome/ nickel alloys deposited onto PEEK polymer substrate.
2) Selective wet etching of silicon nitrides and silicon oxides deposited onto CFCs (Carbon Fiber Carriers), graphite, stainless steel, titanium, and quartz substrates by non-HF technology.
3) Selective wet etching of CIG/CIGS (Cu/In/Ga/Se) deposited onto stainless steel and aluminum substrates.
4) Selective wet etching of niobium and silicon salts deposited onto steel, stainless steel, and aluminum substrates.
5) Selective wet etching of titanium deposited onto stainless-steel and graphite substrates.
6) Selective wet etching of Silicon Oxides deposited onto aluminum and quartz substrates.
7) Selective wet etching of thick deposition of aluminum, copper and titanium from stainless-steel substrate.
8) Selective wet etching of AZO (Aluminum Zinc Oxide) deposited onto stainless-steel substrate.
9) Selective wet etching of DLC (Diamond-like Carbon) deposited onto stainless steel substrate.
10) Selective wet etching of chromium, titanium and aluminum deposited onto steel and stainless-steel substrates.
11) Selective wet etching of ITO (Indium Tin Oxide) deposited onto stainless steel, plastic, and glass substrates.
12) Selective wet etching of TiCN (Titanium Carbo-Nitride), TiN (Titanium Nitride) and AlN (Aluminum Nitride) deposited onto graphite, CFCs (Carbon Fiber Carriers) and stainless steel by non-HF technology (please see one of the FAQs for more details).
13) Etc.
What is the non-HF technology you are using for cleaning shields from the coating systems of producers of photovoltaic cells?
This is a novel technology on selective wet etching of Silicon Nitrides (photovoltaic cell material) from different substrates including stainless steel, carbon fiber carriers, graphite, etc. Customers appreciate the technology because there is no hydrofluoric acid (HF) being used. Since hydrofluoric acid (HF) is a gas dissolved in water, its fumes always stay in pores of CFCs and/or graphite, leaving the producers with the need to wait long time to reach vacuum in the PVD or CVD process to start producing their films. This technology saves production time while increasing the productivity significantly. Since the etching liquid mix is not as aggressive as the mix with hydrofluoric acid (HF), the precision parts cleaned by this technology last longer. The extraction of chromium from stainless steel treated by hydrofluoric acid (HF) was measured. The amount of chromium extracted by hydrofluoric acid is ten times higher than for the stainless-steel precision part that had been treated by our non-HF technology.
What do you think is the key point of your technologies?
We provide our clients robust, simple, affordable, and portable technologies, that may be used at remote locations, as necessary. We give them a chance to control the costs, optimize the precious metals yields, and have in-house control of the precious metals rather than subcontracting out the recycling.
How do you compare yields of precious metals of your patented processes with current Aqua Regia?
Our results have shown between 30-70% higher yields of precious metals, especially gold, taken off from a variety of different substrates, substrates dissolved, leaving the deposition.
How do you compare costs of your special technologies? The current Aqua Regia process, for instance, uses one of the least expensive chemicals on the market...
We believe that the main costs are associated with labor, while the smallest cost is associated with the price of the chemicals. Since our technologies are straightforward, simple and require little investments, the overall costs are between 15-40% less expensive depending on application. Our vision and mission are to help our clients solve recycling challenges. Our track record of solving challenges would not be successful if we were not able to simplify the technologies and increase our client’s profit margins.
Can you recycle silver from X-ray films?
Yes, we can selectively etch and recycle silver not only from different plastic but also from stainless steel, aluminum and some other substrates. The technology does not require investment of electrochemical purification of silver.
Can you recycle silver from medical gauze?
Yes, we can selectively etch and recycle silver from gauze. The technology does not require investment of electrochemical purification of silver.
Can you recycle indium from ITO (Indium Tin Oxide)?
Yes, we can selectively etch and recycle indium Tin Oxide not only from different plastic but also from stainless steel, aluminum and some other substrates. The technology of indium recycling does not require any electrochemical method for separation or purification, but also we do not use vacuum furnaces to smelt indium either. Our novel process (patent pending) delivers metallic indium in min. 99.9% purity with no need to invest into electrochemical separation and purification of indium or a vacuum furnace for smelting indium.
Have you selectively removed some depositions from qartz by use of wet etching chemistry?
Yes, we have – tantalum, tungsten, silicon oxides, polyurethanes, epoxides, etc.