Waste resources such as converter slag, oxidized slag, reduced slag, incineration recycled aggregates, construction waste, etc., that can be promoted processing into recycled inorganic aggregates for reuse. The characteristics of most inorganic aggregates can meet the requirements of public works. After being processed into recycled inorganic aggregates, they can be used as suitable materials for various applications and engineering purposes. The engineering applications primarily include asphalt concrete, non-structural pre-mixed concrete, controlled low-strength materials, cement products, raw materials for cement, and non-agricultural land fill materials, etc. (Figure 1).