First, let's introduce the raw materials used for commercial concrete aggregate production. Commercial concrete aggregates are typically made from materials such as limestone, granite, and basalt. These raw materials have high quality, resulting in good-quality finished products.
Second, what are the requirements for commercial concrete aggregate at a concrete plant? Commercial concrete aggregates generally require grade matching. Grade 1 matching uses one type of stone, grade 2 matching uses two types of stones, and grade 3 matching uses three types of stones. Grade matching pays attention to particle size. For grade 1, stone sizes range from 1.0cm to 2.0cm. For grade 2, stone sizes include 1.0cm to 2.0cm and 2.0cm to 4.0cm, each accounting for 50%. For grade 3, stone sizes include 1.0cm to 2.0cm and 2.0cm to 4.0cm, each accounting for 30%, while the remaining 40% uses stones with sizes from 4.0cm to 8.0cm.
Third, should a cone crusher or an impact crusher be used for processing commercial mixed aggregates? The main difference between a cone crusher and an impact crusher lies in the hardness of the processed material. Impact crushers are suitable for soft materials like limestone, which results in good particle shape and lower cost compared to cone crushers. Cone crushers are suitable for medium-hard materials like granite, basalt, and pebbles, which require higher wear resistance. However, it should be noted that besides material hardness influencing equipment selection, other factors such as finished product requirements, budget, power consumption, and related considerations should be taken into account.