Dear Sir or Madam,

Being committed to a value chain in which 100% of resources are recovered and reused in an intelligent way is a key step to realising a functioning Circular Economy. This represents the main driving force behind REMEX business activities.

With that in mind, this newsletter provides an excellent example as REMEX continues to extend services to the Energy from Waste (EfW) industry. The main residue from EfW plants is incinerator bottom ash, and at REMEX, we are able to treat this material so that 100% of the minerals are recovered. The two project examples below demonstrate exactly that. Incinerator bottom ash that undergoes processing in our plants, including technologies such as > hydromechanical treatment HMT, makes for perfect secondary construction materials fulfilling two aims: saving natural resources and the full recovery of mineral waste.

In addition, we are working constantly to improve metal recovery rates from bottom ash. Not only have we increased this rate, i.e. through our > MERIT® technology, we realised the next logical step in the value chain through the cleansing of recovered metals in our own metal processing installations. These metals are directly used by smelting companies – another step taken towards a perfect cycle.

Yours sincerely,
Michael Stoll, Chief Executive Officer of REMEX Mineralstoff GmbH

REMEX in Asia

REMEX opens metal processing plant in Malaysia


In August 2018, REMEX Processing Malaysia Sdn. Bhd (RMP) started its operation to process and upgrade metals recovered from municipal solid waste incinerator bottom ash (IBA). The ferrous metals and coarse non-ferrous metals are recovered in the REMEX Metal Recovery Facility Singapore and then transported to the company’s metal processing plant in Pasir Gudang, Malaysia.

The RMP Plant is situated on an area of 14,000 m² and has a capacity to process 75,000 tonnes of scrap metals. It is operated as a joint venture between REMEX and PEAKMORE International Pte. Ltd. The processed and cleaned metals are sold directly to metal smelters. Due to significant Asian demand for recycled metals, the new company also recycles and markets metals from other operations of the REMEX Group, such as the Dutch HEROS Sluiskil B.V.

“The joint venture in Johor Bahru, Malaysia, is a logical step in REMEX’s development in the region” says Chief Executive Officer Michael Stoll of > REMEX Mineralstoff GmbH, the holding company of REMEX Singapore. “In combination with our metal upgrading installation for fine non-ferrous metals in the Netherlands, we ensure an optimum recycling quality of all metals that we recover in our IBA processing plants. The treatment adds value to the whole recovery process of municipal solid waste and – most importantly – also represents a significant contribution to a functioning circular economy.”

REMEX Singapore: TV news


“First metal recycling facility in our country recovers 220,000 metric tons of metal” – that was the headline of the TV news of Channel 8 on 1st September 2018. The report focuses specifically on the opportunities of incinerator bottom ash recycling – i.e. extraction and recovery of metals and further processing to enable application of the remaining mineral fraction – in order to reduce the need for landfill. That is urgently needed if the usage period of the Singaporean landfill site, Semakau landfill, is to be extended. It would otherwise be estimated to reach full capacity by 2035.

The National Environmental Agency (NEA) of Singapore recently announced a demo tender to explore the possibility of technologies for the processing of incineration bottom ash for usage in non-structural concrete or as road base material, and invited the industry to demonstrate a technical solution.

The first IBA processing and metal recovery plant in Singapore is located in Tuas South. Operated by > REMEX Singapore Minerals Pte. Ltd., it processes an average of 1,600 metric tons of municipal solid waste incinerator bottom ash per day. Since its start of operation in 2015, it has recovered more than 220,000 metric tons of metals from waste incinerator bottom ash. REMEX is participating in the current NEA tender. Venkat Patnaik, Managing Director of the REMEX metal recycling facility: “We are confident that it is feasible to use 100% of incinerator bottom ash in various high-end applications by further expanding our IBA processing. In the Netherlands, REMEX subsidiary HEROS Sluiskil has developed and implemented according technologies to realise this target, giving proof that a full material life cycle is possible.”

> Learn more about REMEX processing technologies
> Watch REMEX Singapore plant video
> Singapore TV report

Full recovery: IBA application references

Stabilisation of ski hall with incinerator bottom ash (IBA)

Picture: Bird view of the Bottrop ski hall

In 2001, the ski hall in the alpincenter Bottrop (Germany) was opened. Built on a mining pile of the Prosper coal mine, the alpincenter has a slope length of 640 m, making it the longest ski hall in the world.

In the summer of 2011, shifts were observed on various pillars on which the ski hall was built due to the settlement of the mining pile, which made it necessary to discuss the problem in the Bottrop city planning committee. It became clear that a solution was required to ensure the continuity of the alpincenter, and thus, different scenarios for the stabilisation of the heap by a backfill against the direction of displacement were designed.

The greatest challenge lay in the selection of a suitable construction material that was both technically suitable and sufficiently available to fill a volume of 450,000 cbm.

The advantages of the material with regard to availability, high homogeneity and stable quality, ensured by regular quality monitoring by REMEX and AURUBIS, were determining factors in this decision compared to a solution using soil. This concept convinced not only the city of Bottrop, as the authorising body, but also the Ministry of the Environment in Düsseldorf and the Münster district government.

Since autumn 2016, a structure is under construction and, with safety standards from landfill construction, guarantees a sustainable stabilisation of the mining pile. An expert office in Essen regularly inspects the structure, all processes are documented in detail and made available to authorities.

> Learn more about granova® production

granova® combimix in the Netherlands: IBA for “Tractaatweg”

Picture: Aerial photograph of the Tractaatweg project

”Smooth and safe from Goes to Ghent” is the slogan for the “Tractaatweg”, a large Dutch infrastructural roadworks project using incinerator bottom ash commissioned by the Province of Zeeland. The works concern the connection between the N61 south of Terneuzen and the R4 at Zelzate. The whole Tractaatweg will have two lanes in both directions, without traffic lights or roundabouts. With three viaducts, the new road ensures an optimal traffic flow.

> HEROS Sluiskil B.V., a REMEX subsidiary, was chosen to supply a total of 125,000 tons of granova® combimix in the substructure for the widening of the Tractaatweg. This amount corresponds to the reprocessing of annual household waste from two million people.

Heros has been certified by Rijkswaterstaat for its clean building material granova® combimix, which is produced from incinerator bottom ash as high quality building materials in accordance with requirements stipulated in the Dutch > Green Deal.

> Learn more about granova®
> Watch how HEROS turns IBA into different granova® products

REMEX recycling technologies at a glance