![iron front liberation 1944 saok iron front liberation 1944 saok](https://2.bp.blogspot.com/-ZhEew_L_KeI/T7xarUO9jNI/AAAAAAAAD9U/IeSs6c2d6UA/w1200-h630-p-k-no-nu/PzGren2.jpg)
This work makes the recovery of KG with high recovery and grade from steel slags feasible. The sorption test demonstrates that KG-EG had good equilibrium adsorption capacities and adsorption rates for various oils. The structure characterization shows that KG has excellent crystallinity, and kish-based expanded graphite (KG-EG) held more mesopores than nature graphite-based expanded graphite (NG-EG). The PFSM process avoided the shortages such as the sediments of iron particles in the flotation cell and the loss of clean graphite in magnetic separation. First, the pneumatic separation was used to remove the dissociated, coarse, and heavy impurities, flotation was employed to eliminate the fine impurities selectively, and then magnetic separation combined with sonication liberation was used to remove the remaining entrained iron. In the present study, we proposed the pneumatic separation–flotation–sonication–magnetic separation (PFSM) process. This work supplies one feasible and promising way to recycle kish graphite from steelmaking slags and use it. Furthermore, the developed macropore structure of the obtained kish graphite-based expanded graphite led to a superior sorption performance for oils. The kish graphite-based expanded graphite presented an octopus-like shape and exhibited an expansion volume of ∼150 mL/g. The macroscopic structural defects of kish particles created more active sites, made the intercalation of KG-GICs faster, and yielded better-staged compounds.
![iron front liberation 1944 saok iron front liberation 1944 saok](https://i.ytimg.com/vi/NMy8x3F8Fzg/maxresdefault.jpg)
Consequently, the carbon content of kish graphite reached ∼95% after separation and >99% after acid leaching. The new process avoided shortages such as the sediments of iron particles in the flotation cell and the loss of clean graphite in the magnetic separation. In this paper, we proposed an integrated beneficiation process, pneumatic separation–flotation–sonication–magnetic separation, to recycle kish graphite flakes with a high graphitization degree and investigated the sorption performance of various oils on kish-based expanded graphite. However, only one means cannot work efficiently because of the unusual occurrence of associated impurities combining multiple separation methods is the solution.
![iron front liberation 1944 saok iron front liberation 1944 saok](https://m.media-amazon.com/images/I/91A0DWHLvmL._SL1500_.jpg)
The scale-up recycling of kish graphite from steelmaking slags is a promising way to develop natural graphite alternatives. Kish graphite is a precipitate of excess carbon generated during the cooling of molten iron and one of the byproducts associated with steel slags. The utilization of industrial waste as renewable resources is an essential issue of sustainable development.