In this paper, porous ceramics were prepared by controlling the composition and sintering temperature of raw materials based on slag from steel refining operations and without the need for a pore-forming agent. Solid-state processing included a phase transformation from low-density raw materials (2.10–2.90 g/cm³) to high-density pyroxene-based ceramics (3.22–3.88 g/cm³). Phase transformations and densification of porous ceramics were investigated by means of mercury intrusion, XRF, SEM and EDS. Results showed that a porous ceramic with optimum properties produced from raw material containing 35 wt.% steel refining slag, exhibited a high water absorption capacity of 31.62%, flexural strength of 18.26 MPa, porosity of 44.5% and an average pore diameter of 1.27 µm. Raw materials with high fineness or content near the pyroxene composition promoted formation of pyroxene and accordingly more volumetric shrinkage which enhanced both bending strength and porosity of the porous ceramics.

在本文中，多孔陶瓷是通过控制原料的成分和烧结温度来制备的，这些原料基于炼钢操作中的炉渣，不需要造孔剂。固态加工包括从低密度原材料（2.10–2.90 g/cm ³）到高密度辉石基陶瓷（3.22–3.88 g/cm ³）的相变。通过压汞、XRF、SEM和EDS研究了多孔陶瓷的相变和致密化。结果表明，以含有 35 wt.% 钢精炼渣的原料生产的具有最佳性能的多孔陶瓷具有 31.62% 的高吸水能力、18.26 MPa 的抗弯强度、44.5% 的孔隙率和 1.27 µ的平均孔径米。细度高或含量接近辉石成分的原料促进了辉石的形成，因此更大的体积收缩率提高了多孔陶瓷的抗弯强度和孔隙率。