The invention relates to a non-mezzanine bulk cement tanker tank for the railroad. The tank comprises a horizontal tank, wherein the horizontal tank is of a segmented combined structure and consists of a middle short cylindrical section, a pair of right-angle oblique cone cylinders and a pair of tank heads, and the upper generatrix of the right-angle oblique cone cylinders and the upper generatrix of the middle short cylindrical section horizontally coincide; the lower generatrix of the right-angle oblique cone cylinders and the lower generatrix of the middle short cylindrical section form a slope, and a curved fluidized bed is arranged at the bottom of the inner cavity of the right-angle oblique cone cylinders in an adherence way and is provided with a plurality of juxtaposed breathable weaving tube belts which are connected with an external compressed gas source through an intake manifold. The design eliminates the complex internal structure of the existing cement tanker, utilizes the radian and the slope of the bottom of the tank to arrange the fluidized beds, so that the internal structure of the tank is simplified, the invalid volume is eliminated, the weight of the tank is reduced, and the height of the center of gravity is reduced, thus the vehicle load is increased, a series of inertia problems brought by ash leakage are solved, and the maintenance and the overhaul are more time-saving and convenient.