PYZT900 Spring Cone Crusher . Features of PYZT900 Spring Cone Crusher . The PYZT900 spring cone crusher is widely used in the metallurgy, construction, road building, chemical and other industries.. The PYZT900 spring cone crusher is suitable for crushing the high or medium hardness rock and minerals, such as iron ore, cooper ore, limestone, quartz, granite, basalt, dolerite, etc.