Hard rock crushing and screening plants are facilities designed to process and refine hard minerals and rocks (such as granite, basalt, quartzite). These plants use crushers, such as hammer crushers, cone crushers, and impact crushers, to break down the hard rocks into smaller, manageable pieces. The screening process then separates materials by size, ensuring that the desired products are sorted and prepared for further use. These plants are crucial in industries such as construction, infrastructure development, and mining, where hard materials are frequently used and need to be processed efficiently.