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Salt Slag Recycling - SALTROMEX


Ultromex introduces SALTROMEX,  patented plant & technology enabling aluminium smelters to treat and recycle their own salt slag wastes to recover and valorise the treated outputs, leaving zero to landfill and crucially, helping to drive the Circular Economy.

SALTROMEX changes the economics of smaller scale aluminium salt slag recycling & treatment, allowing smelters, of any scale, to treat their own salt slag to recover valuable aluminium metal, flux salts and to avoid the costs of using third party processors.

SLATROMEX uses unique technlogy developed by Ultromex so that  expensive toxic and explosive gas abatement equipment is not required. Beneficiated solids are rendered non reactive and thus non-odourous, significantly enhancing its value for downstream users in the Circular Economy.  

SALTROMEX can be deployed to treat salt slag arising at the smelters' location or anywhere else where the salt slag is stored or even if it has been previously landfilled.

Serving the aluminium industry
- Driving the circular economy

Ultromex provides state of the art plant, processes & services to aluminium producers and remelters for the treatment, recovery and safe beneficiation of aluminium production wastes; salt slag, dross, SPL and filter dusts to create valuable products.
Waste recovery is key to the Ultromex approach, reducing the carbon footprint and environmental impact of aluminium production, whilst at the same time significantly improving operational security, bottom-line profits and CO2 reduction.

Exciting changes at Ultromex

In order to take advantage of all of the opportunities in front of it, Ultromex has strengthened its senior team.

Brent Mahoney, who joined the business in 2023 as Commercial Director has taken over as Chief Executive Officer from Nigel Seddon who is now Chairman of the company.

"Ultromex has some great technology in the aluminium space and huge opportunities in front of it. I am looking forward to continuing to grow the Ultromex business and build on Nigel’s legacy, as the business develops into a waste management powerhouse" 
- Brent Mahoney  

SOLUTIONS TO HELP THE ALUMINUM INDUSTRY

We have developed a range of solutions using new technolgies to enable the aluminum industry reclaim and recover value from difficult wastes



Mobirise

ALTROMEX

For smelters processing white drosses ALTROMEX can be used to pre process the dross before melting to increase yields, reduce operating costs, increase furnace throughput and bottom line profits. The lower the quality of the dross the bigger the gain!

Mobirise

TERRAMEX

The aluminum industry works hard to deal with its wastes responsibly. But in the past, when recycling technology was not so advanced, some wastes were land filled and are now causing pollution & environmental problems. TERRAMEX can resolve these problems permanently.

spent pot liner

CARBOMEX

Our patented solution for treating Spent Pot Liners. 
CARBOMEX is an exciting new technology which represents a step change for smelters who need a sustainable option for this hazardous, problematic aluminium production waste.

salt slag & dross

SALTROMEX

SALTROMEX plants,  are designed to help secondary aluminium smelters of all sizes treat and recycle their own dross & salt slag to recover valuable aluminium for re-melt, recover the flux salts to use again while leaving non-odourous, valuable aluminium oxide residues.  

Consulting & Lab Services

Salt slags and aluminum wastes in general are highly variable in both physical and chemical form. Our knowledge and experience of aluminium wastes is unrivalled, meaning we can help with any problems you may have.

More about SALTROMEX salt slag recycling

SALTROMEX plants, using our patented processes, are designed to help secondary aluminium smelters of all sizes treat and recycle their own salt slag to recover valuable aluminium for re-melt, recover the flux salts to use again while leaving non-odourous, valuable aluminium oxide residues.

SALTROMEX changes the economics of smaller scale salt slag recycling so that now almost all smelters can take total control of their salt slag waste. Where previously salt slag waste disposal was a significant cost, it now presents as an asset to monetize and also allows you to gain more operational control.

Our plants are designed to be low Capex & low Opex, delivering the best overall economic solution for your salt slag waste.

Contact us to learn more about how SALTROMEX can benefit your bottom line.

Salt slag recycling benefits

1

Recover aluminium to re melt

Salt slag contains ~5 - 12 % metal which SALTROMEX can recover, without crushing or grinding, creating no metal fines meaning maxiumum metal recovery for re melt. No other technology is as effective at recovering metal from slags or drosses. More..

2

Recover flux salts to use again and again

SALTROMEX removes the flux salts from the non metallic residues making it available to re-crystalise to use again over and over. Salt removal initiates hydrolysis reactions evolving malodourous, toxic and potentially explosive gases; SALTROMEX controls these gases so the process is safe and non odourous.

3

Un-reactive valuable oxide residues

SALTROMEX leaves the de-metalled, salt free residues (mainly aluminium oxides) un-reactive and giving no odour. They become a valuable secondary resource for other industries. 

4

Operational Security

Ever increasing environmental legislation puts pressure on smelters' operational effectiveness. Using SALTROMEX to treat your waste salt slag in-situ gives you more control.

To evaluate the benefits of treating your own salt slag contact us. With some basic information about your operation we can give you a good idea of the costs and benefits.

What is Salt Slag?

Salt slag, also referred to as salt cake or black dross is a waste material generated by secondary aluminium processing (the recycling and smelting of new aluminium from aluminium scrap, dross and other industry wastes).

Due to its reactivity with water and the nature of the contaminants it contains, salt slag (or salt cake as it sometimes known) is classed as a hazardous waste in most countries and banned from landfill. Disposing of the waste in an environmentally sustainable yet cost effective way is a major challenge for the aluminium smelting industry.
Our technology turns hazardous salt slag waste into valuable resources and crucially, being deployed in-situ at your foundry, means that you are in total control.


CONTACT US TODAY TO FIND OUT MORE

The most common types of furnace used by the secondary aluminium industry are rotary or reverbatory furnaces. In these furnaces scrap aluminium is melted under a bath of molten salt flux which floats on the surface of the molten metal. The salt flux is a mixture of sodium chloride and potassium chloride, often with small amounts of fluorides (Cryolite).

Aluminium has a tendency to oxidize with the heat of the furnace so the salt provides an effective cover for the metallic aluminium, minimizing losses to oxidization and increasing metal recoveries. The fluoride in the salt helps break down oxide layers already on the surface of the scrap and so helps to improve separation between the aluminium and non-metal contaminants.

The molten metallic aluminium is tapped from the furnace and where it meets the salt layer this contains some residual aluminium metal, plus various metal oxides (mainly aluminium oxide) and the salts. This mixture solidifies and cools to become salt slag; sometimes known as salt cake or black dross. 

Historically, salt slag was land filled but this has caused a number of problems, including salt and other contaminants leaching into the water course and (being exothermic on contact with water) causing underground fires. As environmental awareness and regulations have developed, landfill of salt cake has been banned in many countries and the options for disposal have become a major issue for the industry. Salt slag processing and treatment for recycling is now the only sustainable option. 

Our technology allows secondary smelters to process and recycle their own salt slag wastes as they arise, recovering the small amount of trapped metal to re-melt, recovering the salts to use again and with the residual aluminium oxides becoming a useful feedstock for other industries and – crucially – leaving zero waste for landfill. 

Where landfills exist and are causing environmental problems we have unrivalled expertise in providing solutions.

ULTROMEX LIMITED 
Mersey Wharf Business Park
Dock Road South
Bromborough, Wirral CH62 4SF
Tel: 0151 203 8377
Email: sales@ultromex.com
Registered in England
Company no 07661552
Email: sales@ultromex.com
Phone: +44 0151 203 8377


ULTROMEX FRANCE SAS
38 Rue de Berri
75008 Paris, France
Siret: 87960220900014
Email: sales@ultromex.com

Our Technologies
> Salt slag recycling & treatment
> Salt cake recycling & treatment
> Salt slag land fill remediation
> Spent pot liner recycling & treatment
>  Spent pot liner in landfills
> Dross recycling pre treatment
> Black dross
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