Picture of secondary impact crusher Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Picture of secondary impact crusher, quarry, aggregate, and different kinds of minerals. Dec 24, 2020 Impact crusher is often used as secondary crushing equipment in the stone crushing plant. The proper operation of impact crusher has great influence on the whole production plant. In the production process, operators should strictly follow the operating rules in order to make sure the stable and high efficient production of impact crusher.