... more than 100Mpa and humidity lower than 15%, such as coal, salt, chalk, gypsum, blocks, limestone, ... , compressive resistance of the crushed materials can be up 150Mpa. it crushes by the collisions between ... so on. Otherwise, the discharge opening can be adjusted according to the customer’s requirements. 4 ... reached the required size.,then it will be charged from the lamina cribrosa. hammer crusher for ...