An environmental friendly carbonaceous materials—carboresP (one of the Carbores series materials) were investigated for the production of MgO-C refractories in laboratory scale and field tests.? The MgO-C specimens were produced with different CarboresP contents. The bulk density (180℃×48h)), CCS, apparent porosity (1000℃×3h) and hot modulus of rupture (1400℃×0.5h) were tested and contrasted. The appropriate amount of carboresP was 1.0%. The amount of metallic additions can be partially substituted (reduced to 1.5%). The microstructure of resin-carboresP binders is anisotropic structure with high oxidation resistance and good thermal-shock stability. The Stress/strain curve indicates that the characteristic length (LCH) of the MgO-C brick with resin/CarboresP bonding has been improved, which means the MgO-C bricks have good mechanical flexibility and the ability to absorb stresses. Resin/CarboresP bonded “MT-14A” MgO-C bricks were produced and have field tests in slag lining of 40t LF-VD refining steel ladle .The result shows that the MgO-C bricks by “soft bonding” have good physical properties and excellent workability during production of the bricks .In contrast with traditional MgO-C brick used for secondary refining furnaces, the tendency to spalling of the bricks could be reduced significantly. The average lining life of the resin/CarboresP bricks has increased by 18.4% comparing with the pure resin- bonded types.