Recycling and Remelting Materials from the Electronics, Glass, and Chemistry Industries

Precious metals are too valuable to be discarded after use. Customers turn to Heraeus for support with their precious metal recycling.

Refining or Remelting? What is the Right Method for Your Needs? 

Production processes generate residues that still contain valuable precious metals. It is important to recover these materials to keep secondary precious metals in the loop and preserve their financial value. Heraeus Precious Metals specializes in recycling materials containing precious metals from the electronics, glass, jewelry and chemical industries, among others.

There are a variety of different methods for recovering precious metals. The method for recovering your precious metal is determined by its chemical make-up and the impurities that are present. The most important difference is whether the precious metals can be melted down and reused as an alloy, or whether a chemical recycling (refining) process is required to separate into the individual precious metals elements.

Precious metal materials that are returned and have a low level of impurities can be remelted (cleaned) to purify the alloy. If the returned material needs to be de-alloyed (separated from each other), contains low levels of precious metals or is highly contaminated, it must be chemically refined (separated) from the other materials present.

As said, typical remelting material can be also a matter for refining – in case the metals are supposed to be separated or are severely contaminated with impurities. To give you a rough idea, here are some hints which process is probably the more suitable one:

  Remelting Refining

Level of Impurity

Low level of impurities Higher level of impurities or mixed with other materials
Use of the Recycled Metal or Alloy The metal is already pure or is planned to be used for new products with the same alloy composition The metal is supposed to be separated from other metals or materials
Typical Examples of Materials
  • Out of spec and end-of-life materials of pure metal
  • Crucibles, lids, dishes for laboratory use
  • Stirrers, feeders and nozzles for the glass industry
  • Out of spec and end-of-life products in alloys or mixed with other materials
  • Powders and pastes containing precious metals
  • Residues from production process
  • Platinum- and ruthenium-containing targets for the production of magnetic data storage disks (HDDs)
  • Silver and gold targets for coatings
  • Bonding wires and contact materials for manufacturing circuit boards
  • Platinum/rhodium sensors for measurement and instrumentation technology
 

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Return of Precious Metals for Remelting

Heraeus offers remelting services mainly for those end-of-life precious metals products that are part of the Heraeus portfolio. However it is not important if the concrete product was originally manufactured by Heraeus or by other manufacturers. Important is that the purified alloy can be used to produce new products made of the same alloy. Therefore, any end-of-life material must be made from an alloy that can be re-used for products typically produced by Heraeus.

Typical products that are processed by Heraeus are crucibles, lids, dishes, thermocouple wire, cuttings, components, stirrers, feeders, etc., which are made of precious metals.

Return of Precious Metals for Remelting

The process for submitting a remelt order is simple:

First Step

Start a new order indicating that you wish to trade in precious metal (either while purchasing a product or an independent re-melt order).

Second Step

Specify the alloy of your scrap material and fill out the questionnaire with the legally required information about composition, possible impurities and, if applicable, hazardous substances.

Third Step

Click “submit” to place order. You will receive an address label with a consignment number for your scrap material from Heraeus by E-mail.

Frequently Remelted Metals and Alloys

Pure Metals Platinum-Rhodium Alloys Other Platinum Alloys

100% Gold

100% Platinum

100% Iridium

95% Platinum, 5% Rhodium

94% Platinum, 6% Rhodium

90% Platinum, 10% Rhodium

87% Platinum, 13% Rhodium

80% Platinum, 20% Rhodium

70% Platinum, 30% Rhodium

95% Platinum, 5% Gold

92% Platinum, 8% Wolfram

90% Platinum, 10% Iridium

Typical Materials for Remelting

How to Submit Remelt Orders Online?

The online shop integrates your remelting order with possible actual or future product orders.

You can send in precious metals scrap and have your new product produced by the regained material. Please note, that manufacturing new products may require additional material beyond the amount that can be recovered. Once sufficient precious metal is secured, you can place an order for the manufacturing of a new product. Note that scrap material must be received at Heraeus before we can begin production.

You can also place product orders without sending in scrap material at the same time and have your products be manufactured from already existing precious metal stock or have the necessary precious metal purchased from Heraeus. When you buy a product in the online-store, you must decide if the required precious metal will come from your precious metal pool account, purchasing of the metal or a combination of the scrap material and the purchasing of new metal.

You can also send in precious metal independent of a purchase and use the recovered material later for a comparable product. Minimum order size is 50 grams of precious metal. If it is determined that the material is heavy in impurities Customer Service will contact you, as this might be rather a subject of a refining order.

Return of Precious Metals for Refining

As noted, above, in the chemical precious metal recycling, Heraeus processes materials that contain one or more precious metals as well as other chemical elements. The form and scope of the process depend entirely on the material composition and can be more complex. In addition, there are legal regulations for the shipment of precious metal waste that must be considered before and during transport. Therefore, processing of refining orders is usually more extensive and customer specific.

Materials for the refining recycling process are often used in diverse applications such as:

  • Semiconductors
  • Sensors
  • Electronic components for the automotive industry
  • LEDs / OLEDs
  • Photovoltaics
  • Magnetic data storage
  • Passive components

Typical materials that are processed in precious metal refining at Heraeus:

  • Alloys with high impurities or low precious metals concentrations
  • Precious metal catalysts at the end of their life cycle
  • Concentrates / residues
  • Precious metal containing solutions
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Precious metals recycling cycle

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