Chromium slag harmless resourceful treatment method, active micro-powder material composition and active micro-powder material

The invention provides a chromium slag harmless resourceful treatment method, an active micro-powder material composition and an active micro-powder material. The harmless resourceful treatment method for the chromium slag comprises the following steps: firstly, mixing the chromium slag, a flux, a reducing agent, a selectable fluxing agent, a selectable binder and selectable water to obtain a mixture, and preparing the mixture into mixture pellets; then the mixed pellets are subjected to reduction roasting, and reduced pellets are obtained; and the reduced pellets are subjected to magnetic separation treatment, reduced chromite powder and tailings are obtained, and the quaternary alkalinity of the mixture is 0.18-0.88. According to the technical scheme, the chromium slag, the flux, the reducing agent and other raw materials are adopted for preparing the mixed material balls with the specific quaternary alkalinity, the reduced chromite powder and the tailings are obtained through subsequent reduction roasting