WU Jianfeng, XU Xiaohong
（Wuhan University of Technology）
Abstract: Using the waste slag as a mainly raw materialand adding some industrial chemicalsthe author prepared the Fe－Mn－ Cr－Ni system cobalt－free Black Pigmentand studied its optium process technology and fit with its base glazes by means of the modern test techniques．The result showswhen it synthetized temperature is determinedthe preprocess of the slag and the particle size of the pigment will be influence to its color remarkably．The pigment is not suitable to zinc glaze and magnesium glaze．
Keywords: Fe－Mn－Cr－Ni systemcobalt－free black pigmentprocess technologyfit with base glaze