Hortag horticultural medium is made by pelletising the pfa. By adding a controlled amount of water in specially designed dish pelletising pans, rounded pellets are formed which are then heated on a sinter strand. The result is a hard, honeycombed structure of interconnecting voids within the aggregate. The particles formed are rounded in shape and range in size from 14mm down to fines; these are processed to the required grading, depending on the final use. Being a wholly manufactured aggregate, made from a waste stream, means that the quantity of PFA being landfilled is reduced and virgin aggregate extraction is reduced. Ideal for application on green roofs and plant potting.


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Drax Power Station,
North Yorkshire, YO8 8PH
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