A mathematical model was proposed that gave the binder saturation profile in a convectively dried porous sphere, cylinder or slab wetted with the binder solution. The model was obtained from an expansion of the authors' previous model. The expanded model was applicable to a dried porous sphere, cylinder or slab wetted with binder solution of various initial water concentrations, while the previous model was applicable only to a dried porous slab wetted with binder solution of a fixed initial water concentration. Convective drying experiments were performed by using a porous sphere of glass particles wetted with styrene-butadiene rubber latex. The binder saturation profile in the dried porous sphere was successfully measured, while the profile was measured only for dried porous slabs in the previous studies. Agreement between the calculated and the measured results was satisfactory for the sphere case or for the slab case in a previous study by calculation with the same parameter as in the sphere case.