The gravel aggregate production line system generally includes several units: 1 primary crushing unit, 2 semi-finished product storage unit, 3 medium crushing unit, 4 screening unit, 5 finished product storage unit, 6 loading weighing system, 7 water supply and water treatment. Unit, 8 electrical automation systems, 9 spare parts and repair centers.

According to the traditional view, the fixed crusher station has the advantages of small investment, long service life, mature and stable technology, so that most of the mine crusher stations are fixed; with the development of mine equipment and technology, mobile crusher stations with low price and high performance-to-price ratio continue to emerge.

Water slag is produced in the ironmaking process, so there are a lot of water slag in the steel plant, water slag is a kind of easy to grind, most of water slag is ground into fine powder and reused.