The Moh’s hardness of iron ore is up to 6.5, it needs high requirement for the crusher machine. Normally, the production process is feeding through vibrating feeder, primary crushing, secondary crushing, screening, fine crushing and dry dressing. Jaw crusher is the most common used machine for its large crushing ratio, high output, and stable performance. Therefore, jaw crusher has become the most important primary crushing machine for iron ore production.

Moreover, iron ore crushing is not a one-time crushing process, it will use more than one crusher in the whole process. Which one is proper for the secondary crushing? The discharge opening of fine jaw crusher is small, the crushed granularity is less than 40mm which is suitable for small-scaled iron ore plant; while the cone crusher has high output and working efficiency, the granularity is comparatively fine that is suitable for large-scaled iron ore plant.

To have an integrative consideration, the primary crushing of iron ore chooses jaw crusher, the secondary crushing is cone crusher. Combined these two kinds of crushers together would inevitably get the best crushing result, improving the output capacity and promoting the crushing effect to facilitate further transportation and processing.