NOVELTY - In the production of finely-divided inorganic solids (I) by precipitation from solution, the novelty is that the surface of the particles is coated with additive(s) containing a dispersant or deflocculant additive (II), in a total amount up to 80 wt.% of the coated solid, the additive(s) being added to the initial solution.    USE - The coated finely-divided inorganic solids (I) are used as additives in plastics, polymer production, lacquers and paints, paper manufacture and ceramic, medicinal and cosmetic products and in catalysis (all claimed); and in electronics, nanoelectronics, optoelectronics, nanophotonics, batteries and fuel cells (all claimed). The coated (I) are also used for producing a suspension or slurry, which is based on water or a non-aqueous solvent and has a solids content of 10-80, preferably 20-75, especially 40-70, particularly 50-80 wt.% (all claimed). Individual uses include in plastics (especially in production of thermoplastic or thermosetting polymers), lacquers, colors (printing inks, powder lacquers), fibers, paper (e.g. laminated paper), adhesives, ceramics (e.g. electro- or magnetic ceramics), enamels, adsorbents, ion exchangers, abrasives and polishes, cooling lubricants and concentrates, refractories, hard cement concrete materials, medicinal products (sun protection agents) and cosmetics (powders, ointments, toothpastes).    ADVANTAGE - In certain applications, finely-divided inorganic solids must be very well and uniformly dispersed to develop the desired properties. Embedding the solid in an organic matrix assists incorporation but gives a relatively high content of rather costly organic material. Coating by making a filter cake into a paste, mixing with organic substance and drying gives an uneven coating, whilst wet ball milling is energy-intensive. The present technique is simpler and more economical and gives the modified solid as suspension, paste or powder, which can be incorporated in various systems without problems. In particular, the organic substance is distributed uniformly over the surface of the inorganic solid, so that individual particles are not in an agglomerated or aggregated state. The excellent powder flow allows pneumatic conveyance.