Trommel screen yɛ mfiri a wɔde di dwuma kɛse wɔ mfiridwuma mu, a ɛhwɛ nwura a wɔhyehyɛ no so sɛnea nneɛma nketenkete no kɛse te, na ɛwɔ nhyehyɛe a ɛyɛ pɛpɛɛpɛ a ɛkorɔn.
Trommel screen mfiri no yɛ nea wɔde di dwuma kɛse wɔ anyinam ahoɔden, mining, metallurgy, adansi nneɛma, nnuru ne othe r . Nnwumayɛbea ahorow a wɔyɛ nneɛma ..