The most significant mode of heat transfer in large-scale combustion systems is radiative transfer. To model such systems, radiation heat transfer should be accounted for correctly, which requires a thorough knowledge of the radiative properties of combustion products (Viskanta and Menguec, 1987; Menguec and Webb, 1992). It is usually difficult to calculate the properties of coal/char particles and soot agglomerates from theory, as they are non-homogeneous and irregularly shaped. Therefore, it is desirable to determine the effective radiative properties of these particles directly from experiments. The information available for the optical and radiative properties of burning coal/char particles in the infrared region of the wavelength spectrum is scarce. It is more desirable to estimate the effective parameters required in the solution of the radiative transfer equation (RTE), i.e., the absorption and scattering coefficients and the scattering phase function of coal and char particles. In the present study, we determined the scattering characteristics of pulverized-coal particles heated in a premixed flame directly from experiments. The details of the theoretical models considered for data reduction were already reported in another paper (Menguec, et al., 1991). In the following sections, first we will briefly discuss the experimental system used. After that the resultsmore » will be presented and compared against those obtained from the Lorenz-Mie theory for spherical particles.« less