In this paper, detergent tablets processing for industrial multipurpose uses, i. e. hard surfaces cleaning, has been investigated. The detergent formulation is a complex blend of over 95 % of powders: inorganic salts of alkaline metal called builders, and a system of surfactants composed of anionic and non ionic organic molecules. Two processes have been examined: wet granulation of the detergent powder prior to compression and direct compression. Wet granulation is performed in a laboratory high shear mixer. The initial powder and the obtained granules are characterized in terms of particle size distribution, flowability, and compressibility. The granulation parameters studied are the intensity of shear, and the amount of liquid added, water being used as liquid binder. The compression is performed on a uniaxial laboratory press. The following compact features are considered: mechanical strength, friability, density, solubility in cold water, and microscopic observation of fractured surfaces. Comparison of the two compacted products showed that prior granulation leads to increased mechanical properties due to higher plasticity and stronger binding with water, while it slightly deactivates the alkaline product. Compression of the material significantly increases dissolution times.