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The BB100 or BB200 jaw crushers from Retsch can be used to facilitate waste crushing processes.

In order to implement and fulfil the measures introduced in the Landfill Directive, waste must be classified under strict guidelines.

Only when classified by the Waste Acceptance Criteria can the material be accepted into appropriate landfill sites.

Waste that is suitable for landfill can be categorised as either inert, stable, non-reactive, non-hazardous or hazardous.

Once the waste has been categorised, any required testing is the responsibility of the waste producer.

Waste Acceptance Criteria testing is used to estimate the potential for hazardous substances to leach from landfill via rainfall.

Compliance to BS EN 12457:2002 batch leaching tests requires 95 per cent of all particles in the sample to be less than 4mm.

All damp samples with particulate of more than 4mm should be air or oven dried below 40C before being sieved to remove material of more 4mm.

This material is then crushed to pass 4mm and then recombined with the fines, which is where Retsch’s jaw crushers are useful.

Either instrument will readily reduce samples to pass the required 4mm particle size.

Should pH dependence or maximum availability testing procedures also be required, the particle size must be further reduced to pass 1mm and 350um, respectively.

Such size reduction can be difficult using a jaw crusher without several successive passes on suitable materials.

In such cases, the company’s RS200 vibratory disc mill is a suitable solution for this size reduction.

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