The trial will take place at the company's site in Gainsborough, Lincolnshire.
The ProWave system is based on microwave technology designed to selectively heat the water trapped between plate layers and maximise exfoliation. The process has been developed over the past two years to process vermiculite with less energy consumption.
The ProWave equipment will be installed at the Silvaperl site in October and will trial vermiculite ore to evaluate the benefits of a commercial-scale plant.
Meanwhile, Klasmann-Deilmann has bought Latvian company Blue Mountain Peat, which produces in a 1,325ha area of the Baltics.
Klasmann-Deilmann employs 810 people and is the world's leading supplier of peat for commercial horticulture. Its annual turnover is EUR150m.