GNRCK Series Hammer Crusher

The GNRCK series hammer crusher reduces material to target size with hinged rotor hammers by impact and a grate, at very high reduction. It gives fine product in one stage from soft-to-medium, non-abrasive material such as coal, limestone, cement raw material and gypsum.

Technical data

Capacity (tph) is given per project; request a quote for exact values.

Working principle

Free-swinging hammers strike the material, which is broken until the pieces pass the grate opening. It gives very high reduction but energy and wear are high. Stage: primary/secondary (soft-to-medium material).

Material and application

Suitable: coal, limestone, gypsum, cement raw material and brick — soft-to-medium, non-abrasive material needing high reduction to fine product. Not suitable: high-silica/abrasive rock (granite/basalt/gravel) rapidly wears hammers and grate and energy soars; jaw+cone is preferred there. Wet/sticky feed blinds the grate.

Reduction, energy and wear (TCO)

Reduction is very high: up to 1:60, and 1:80 under some conditions; product is a broad 0.5–10 mm distribution. Hammers plus grate/liners are the main items; high-chrome/manganese hammers on soft material. Energy is high (10–16, up to 25 kWh/t on hard material) → energy + parts = high cost per tonne, so it is economical only on the right (soft, non-abrasive) material. In TCO the energy item is critical.

The hammer crusher is part of a full plant on a limestone/cement raw-material line; we supply the complete line and concrete batching from a single source.