Click here for the recycling form worldwide

Here you can find our recycling form worldwide (North America excluded)

Click here for the recycling form North America

Here you can find our recycling form specifically for North America

<ul>
<li>It couldn’t be simpler - we organise every step of the process for you</li>
</ul>
We repurchase your cemented carbide, based on the current market price and supply quantity-specific containers and transport solutions free of charge. Our optimised recycling processes guarantee an increased yield rate of the secondary raw materials.
<ul>
<li>There are two different methods for reducing the carbide end-product to the basic material for recycling:</li>
</ul>
First the thermal zinc process, resulting in a powder which contains over 99% of the tungsten carbide in its original form, along with metallic cobalt and other additives such as grain growth inhibitors. 
Secondly, there is a chemical process where cobalt results as a separate by-product and very little energy is used. For both processes we work closely with our partner company Global Tungsten &amp; Powders (GTP) in the USA.

<h5>Which secondary raw materials can I recycle via this route?</h5>
The focus is on hard metals in all forms. As a partner in the purchase and sale of secondary raw materials, our cooperation partner Stadler Metalle also offers you a complete service for all metals and alloys.
 
<h5>What are hard metals and how do I recognise them?</h5>
Carbide is a composite material consisting of 85-95% tungsten carbide (WC) as the hard phase and 5-15% cobalt (Co) as the so-called matrix, but can also contain nickel as a binder. Carbide can be recognised by its high density of 13-16 g/cm3, which is twice as high as that of steel.
 
<h5>How do I assign my secondary raw materials to the right types?</h5>
We distinguish six types of secondary raw materials: carbide drills and milling cutters (round); carbide indexable inserts (square); carbide mixed (lumpy); carbide wear parts; carbide powder; tungsten and tungsten alloys; other metallic secondary raw materials. In the enclosed information you will find more detailed classifications.
Further description on secondary raw materials
<ul>
<li>Carbide tools mixed without cermets: drills, milling cutters, blanks, print drills, inserts, indexable inserts, PCD-tipped inserts, thread milling cutters, taps, reamers, countersinks</li>
<li>Carbide mixed (piece by piece): wear parts, planer knives, wood knives, circular saw blades, balls, dies, profile knives, punching tools, gravers, centering points, drawing dies, cold impact dies, pressing tools, road scrapers, forming tools, rolling rings, bushings, shaped parts, glass cutting wheels, paper cutting knives</li>
<li>Carbide soft scrap: sludge, dust, chips, tungsten carbide sweeping waste, unsintered tungsten carbide, press breakage, tungsten carbide green blanks</li>
<li>Tungsten and tungsten alloys: tungsten powder, tungsten components, heavy metal, tungsten copper (WCu), tungsten nickel (WNi), densimet, densalloy</li>
<li>Other metallic secondary raw materials: nickel alloys, cobalt alloys, titanium alloys, ferro alloys, pure metals, stainless steel, HSS, tool steel</li>
</ul>
 
<h5>How do I put together my secondary raw materials for dispatch or collection in a sensible way?</h5>
If the batches are available separately according to the above mentioned types, please pack them separately. Several batches can be put separately into one transport container. Special measures are necessary for powders and sludges. We will be pleased to advise you on this.
 
<h5>Who is my recycling partner?</h5>
Existing customers of the CERATIZIT group will receive green shipping boxes for hard scrap and return labels for quantities where this makes sense. The invoicing is done via the customer account. New customers, larger quantities of hard scrap, other types of hard scrap and other metals are handled by Stadler Metalle as cooperation partner. Recycling is a matter of trust. We guarantee professional disposal, fair prices and trustworthy handling.
Depending on who your recycling partner is (see above), you will either be contacted directly by CERATIZIT within one working day or Stadler Metalle in Türkheim/Germany, as an affiliated partner company and certified waste disposal specialist, will also contact you immediately.
 
<h5>How is the pricing determined?</h5>
The total price depends on the quantity, collection location, type and current raw material quotations. While the price for hard metal scrap is easy to calculate, soft scrap in particular, but also other metals are subject to strong fluctuations in composition, so that exact pricing is only possible after consultation.

<ul>
<li>Individual solutions</li>
</ul>
Together, we optimise your cycle from sales to scrap return, from production to repurchasing, in a long-term partnership.
<ul>
<li>Certified quality</li>
</ul>
We have developed processing methods, certified to ISO 9001 and ISO 14001 standard, to convert carbide products after use to recyclable powder. This means that you can always rely on the outstanding quality of our carbide grades.
<ul>
<li> Social and ecological responsibility</li>
</ul>
Help to conserve the earth’s valuable and limited primary resources by acting mindfully! Recycling limits the consequences of intensive mining, such as air, water and soil pollution, as well as the excessive use of energy. With a balance of up to 75% energy savings and 40% reduction of the total CO2 output, this proves the high efficiency of recycling in terms of energy and environment management.

Two techniques for efficient cemented carbide recycling

As soon as we receive the worn indexable inserts and tools, they will be transported to our recycling facilities to be recycled into powder. Two methods are used for reprocessing: thermal zinc recycling, and a chemical process.
 
Thermal zinc recycling process
The zinc process involves the processing of hard metal scrap together with zinc on graphite boats in a special furnace. During the process the molten zinc reacts with the cobalt binder phase of the hard metal. There is a volume expansion associated with this reaction and as a result the cemented carbide swells to a porous cake. The cemented carbide inflates and disintegrates into thin layers, leaving a porous mass of tungsten carbide and cobalt. After the reaction has gone to completion the zinc is distilled off and recovered so that it can be used again. After the treatment of the scrap in the furnace the porous cake is milled into powder. Subsequently, fine milling and homogenisation is carried out to obtain a high quality tungsten carbide-cobalt powder.
By contrast with chemical processes, in the zinc process no chemical conversion of the tungsten carbide and the binder metal takes place. As a result, the original tungsten carbide grain size does not change, and the cobalt binder metal is also recovered. Since the zinc process is only a physical-mechanical modification without change of the chemical composition, the use of graded and clean production scrap is necessary to guarantee a regrind of sufficiently high quality.
<ul>
<li>Thermal treatment of used carbide with zinc</li>
<li>Recycled powder contains over 99% of the tungsten carbide in its original form</li>
<li>More cost-efficient in comparison with chemical processes</li>
<li>Environmentally friendly, as no chemical liquids are used </li>
</ul>
 
The chemical process
All components of the used carbide are dissolved into their atomic constituents and, after refinement, extraction, crystallisation and subsequent powder metallurgical thermal treatment, are converted back into the raw products. The energy input required for the process is very low. Cobalt results as a separate by-product of the process.

For us, recycling means the responsible handling of resources.
We pursue a deliberate policy of conserving limited primary resources through metal recycling, by notably increasing the ratio of reused materials.
By recycling secondary materials, CERATIZIT also limits the consequences of intensive mining, such as air, water and soil pollution, and helps check the excessive use of energy.

<h4>In cooperation with 
Stadler Metalle GmbH &amp; Co. KG</h4>
Stadler is involved in the recycling and trading of secondary raw materials. With a network of globally active partners and its own fleet of vehicles, the Türkheim-based company is able to respond flexibly and quickly to the requirements of its customers.
 
Based on many years of experience, Stadler combines quality, service and price to provide a range of services in line with market requirements.

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✔ecological, sustainable & economical - From recycling of secondary materials to carbide scrap - Certified & sustainable carbide recycling procedures

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