… for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores or other mineral substances, in … or paste) form; machinery for agglomerating, shaping or moulding solid mineral fuels, ceramic paste, unhardened …
Explanatory notes
… for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores or other … of a number of parallel rollers revolving in the same direction in more or less close contact with each other. … Each roller has a number of grooves so that, with the adjacent roller, it forms a channel through which the …