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John Hart CogFAQ

An Introduction

Financial Benefits of Briquetting

Technical Knowledge

Who is John Hart?

John Hart is a privately owned, global manufacturing company founded in 1946, with facilities in the USA, Australia and China.

In addition to manufacturing and selling briquetting systems, outside of the USA John Hart sells machine tools, robotics, automation systems, CAD/CAM software, and laser cutting systems with a lasting heritage in the machine tool industry.

John Hart has had a long standing relationship with some of the world’s most advanced and innovative companies including Mazak, Citizen and Fanuc. Learn more about John Hart.

At our North American Headquarters, John Hart USA currently has a new facility and space for designing, building, selling and supporting our briquetting systems. As a dynamic new company we are currently expanding our capability to help meet the increasing demand for briquetting systems in the North American market.

Command briquetters are John Hart’s range of briquetters which have been designed from the ground up, to process all types of metal chips, resulting in many benefits to the end user.

What is the metal briquetting process?

The briquetting process takes metal chips / swarf and compresses them under high pressure into a briquette form, with the added benefit of being able to recover the coolant and other valuable lubricants squeezed out during the process.

What are the benefits of briquetting?

  • Briquetting increases the value of your scrap metal and turns your scrap into an ongoing income stream.
  • Costly cutting fluids previously lost due to seepage in transport and storage can be reclaimed and re-used.
  • Briquetted material helps alleviate any potential cross contamination with other materials.
  • Briquettes are almost free of coolant compared with loose chips and don’t leak coolant during transportation around the factory or en route to the re-cycler.
  • Briquetters eliminate the need for drying racks or centrifugal driers, removing a costly handling process.
  • Transportation, handling and storage costs are lowered as a result of the volume reduction achieved through briquetting.
  • Machine briquette counters allow you to accurately monitor the amount of scrap being produced.
  • Briquetting your swarf allows a substantially more localised and tidy storage of your scrap, thus reducing your occupational health and safety risks
  • Briquettes are mostly free of coolant, reducing your potential EPA liability.

What types of metals can be briquetted?

  • Aluminium
  • Steel
  • Stainless Steel
  • Brass
  • Titanium
  • Cast Iron
  • Copper
  • Nickel

Why do recyclers pay more for briquettes compared with loose chips?

Briquettes are drier and “purer” than loose chips. As a result the need for the recycler to dispose of waste coolants is reduced, because loose swarf burns the material yield in the melting process is increased and the amount of material processed per melting cycle is also increased.

How much more can I expect to earn for a briquette compared to loose chips?

Briquette prices vary depending on the briquette quality, material type, company location, market conditions and recycler volumes. Companies have achieved as much as 3 times the value for briquettes compared to loose chips, start by speaking to your recycler about the increased value achievable for quality briquettes.

How much moisture will be removed from my scrap chips?

Command series briquetters typically expel up to 99% of moisture contained in loose chips. As coolant can comprise as much as 30% of total loose chip weight, reclaiming lost coolant is worthwhile financially.

How do I re-use reclaimed cutting fluids?

During the briquetting process cutting fluids are extracted. The Command series briquetters collect this reclaimed fluid into an internal tank from where it can be pumped out into a filtering system and re-used.

What is the typical volume reduction of material?

Volume reduction is based on chip structure and grade of the material being processed. Our lab testing has yielded reduction ratios ranging from 3:1 to as much as 20:1. Eg; reducing 20 barrels of chips into 1 barrel of briquettes increases the material that is transported per load to the recycler and reduces valuable factory storage space requirements.

What is a typical payback time for a briquetter?

Payback for a briquetting system can range anywhere from 6 months to 3 years depending on many factors including the amount of material being processed, the material type, the quality of the briquettes, the savings from coolant recovery and the reliability of the briquetter.

How much space does a briquetter require?

Depending on the model and options, standard Command series briquetter installations have a footprint of between ~20–70 sq ft.

What advantages do briquettes offer foundries?

  • Briquettes achieve higher yields in the remelt process. Due to the density of briquettes, less oxidation of the material takes place due to decreased surface area of the material as compared to loose chips. This increases the volume of pure material recovered during the remelt making briquettes more valuable to the re-melter.
  • Reduced moisture in briquettes means it is safer and easier to handle.
  • Once a material is briquetted, due to its near solid state it cannot be mixed with other materials ensuring a high quality product for remelting.

What is the philosophy behind the Command series design?

Our vision for the Command series of machines has been to design a well thought out, heavy duty, highly efficient and reliable series of quality machines which will ensure owners achieve a strong return on investment over many years. The machines have been designed using the latest solid modelling CAD systems and incorporating state of the art Finite Element Analysis to ensure a long working life. We have also invested a large amount of time developing the machines to be user friendly in terms of maintenance and breakdown service. In a nutshell, we are offering the very latest and best technology to give your company a competitive edge in turning scrap material into a profit stream for the long term.

The Command series difference:

  • Quality of build: All critical component designs of John Hart USA briquetting systems have been rigorously subjected to FEA procedures and the components built accordingly.
  • Intelligent design: The Command series features an efficiently designed single platform (s) machine which are both simple to operate and highly efficient.
  • Ease of use: The Command series of briquetters feature a simple to use touch screen interface which allows fast and accurate process changes and performance feedback.
  • Capacity: The Command series briquetting systems are designed to achieve the highest possible volumes from a very economical footprint and they fit nicely alongside your other machine tools.
  • Flexibility: Command briquetters can be supplied stand alone or as a part of a full turnkey system.
  • Options: A range of options are available with every machine including:- pumps, lubrication systems, conveyors, chip dumpers, remote diagnostics, shredders and coolant filtration systems. Tailored systems are possible by mutual agreement.
  • Safety: Command briquetters all have a full metal enclosure which improves machine safety and appearance. Using modular outside panels, these are straight forward to remove when service access is required.
  • Support: John Hart USA not only manufactures state of the art equipment but also has the knowledge and ability to provide superior service and technical support for their customers.

Where are John Hart USA briquetting systems built?

The Command series briquetting systems are built in our 12,000 square foot facility located in Centerville, Minnesota approximately 20 miles north of Minneapolis/St. Paul.

Can I have a sample of my metal chips tested before I buy a briquetter?

Absolutely. We will test your metal chips on one of our briquetters to show output quality and to help specify the right machine for your requirements. You will be able to take these sample briquettes to your recycler to determine their increase in value.

How does briquetting fit into my current manufacturing and recycling process?

Click the images to learn how briquetting fits into the recycling process.


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