Briquetting and Agglomeration Case Study

HRL eliminates coal waste liabilities and creates new client revenue stream


A client needed a cost-effective solution for the re-use or disposal of large stockpiles of coal waste. These stockpiles posed an environmental, space, and economic liability. The challenge was developing an agglomeration process to convert the coal waste into a value-added product solving the potential liabilities and creating an additional revenue stream for the client.  


The client engaged HRL to provide comprehensive technical expertise and develop a briquetting product right through from concept to pilot-scale demonstration, and finally, a commercial plant producing and selling briquettes. HRL assisted the client through all steps of product development through to commercial operations, including:

  • Laboratory testing to demonstrate the feasibility of briquetting and determine the required briquetting conditions (e.g. technology, binder, moisture content);
  • Laboratory scale combustion trials, reactivity testing, and analytical testing;
  • Pilot-scale double roll press trials to demonstrate and optimise operation;
  • Assembly and operation of a demonstration-scale briquetting plant to allow production of 100 tonne of briquettes for combustion trials by the end-user; and
  • Costing activities for a commercial plant.


HRL successfully provided the technical support required to convert the initial concept into a commercial plant producing and selling briquettes. This solution has alleviated the liabilities associated with the coal waste stockpiles and produced a new revenue stream for the client. The key capabilities which allowed the solution to be realised were HRL experience in agglomeration, its laboratory and pilot-scale testing capabilities, and its ability to develop technical solutions to meet the client's specific requirements. 




"Going through the process of the energy audit was great for two main reasons. Firstly, it identified where we have information gaps and what we can start measuring to better understand our energy usage. Secondly, it independently identified and qu...

James Perrin

What our clients say:

Are you ready to transform your business performance?

Phone +61 3 9565 9888

Latest News

HRL - Training our young Materials Engineers

Posted by Sky Loo on 3 August 2020
  HRL places considerable em...
Posted in: Power Plants Training Remaining Life HR  
< Previous | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next >

Sign up: newsletter & updates


Our certifications

NATA accredited AtS/NZS ISO 17025, AS/NZS ISO 17020NATA Accredited Laboratories number 561.

ISO 9001 Quality Management certied by BSI under certicate number FS605116.

Ready to transform your business performance?

Contact our technical consultants on -
+61 3 9565 9888 or to get started today.

See expertise in action:



Language selector