For soft, friable, and crystalline materials such as ice or gypsum, which crusher type is most suitable to achieve size reduction with minimal fines?

Introduction / Context:
Material properties govern crusher choice. Soft, friable, and moderately moist materials like gypsum and ice are best handled with shearing/tearing actions rather than high compressive forces that create excessive fines.

Concept / Approach:
Toothed roll crushers grip and shear material using intermeshing teeth, delivering controlled top size with relatively low fines production for soft minerals. Jaw and gyratory crushers apply strong compression, which is ideal for hard, abrasive rocks but tends to over-crush soft materials.

Final Answer:
Toothed roll crusher