Abstract:Red mud is a very fine solid waste produced by the production of alumina from bauxite. It has high alkalinity and contains a small amount of organic matter and valuable elements. For the analysis and testing needs of the comprehensive utilization of red mud, we have developed a set of CRMs for Chemical Composition of red mud , covering the main elements Al, Si, Fe, Ti, K, Na, Ca, Mg, S, reference element P, V, Cr, Ga, Mn, Zn, Zr and indicators such as burning loss. According to the gradient of the main elements’ chemical composition, the composition is designed into eight points. It can meet the needs of large-scale instrumentation such as X-ray fluorescence spectrometer. The use of this standard sample provides reliable red mud chemical composition data quickly and accurately, and track and compare the results of chemical analysis. It plays an important role in promoting the comprehensive utilization of red mud, promoting the sustainable development of the aluminum industry and improving environmental pollution.