NOVELTY - Agglomerate from carbon nanotubes with a diameter of 3-100 nm and a length to diameter ratio of at least 5, is claimed, where: the agglomerate exhibits a bundle of carbon nanotubes in the form of intertwined bulked yarns from carbon nanotubes; and the carbon nanotubes in bulky yarn bundle has an average interval of 20-100, preferably 40-60 nm.    USE - The carbon nanotube agglomerates are useful as: additives for polymer, rubber, ceramics, metal, metal alloy, glasses, textile fibers and composite material; electrically conductive additives in electrodes, membranes for material separation, solar cells, actuators, sensors, inks or paste and/or energy storage devices, preferably batteries, accumulators, fuel cells or condensers; substrates for pharmaceutical active agents or for plant-protection substance; an adsorber, preferably for volatile compounds, e.g. gases or biological compounds, preferably enzymes; and carrier or container of catalyst (all claimed).    ADVANTAGE - The carbon nanotube agglomerate provides high catalyst conversion. The carbon nanotube agglomerate can be produced in high yield.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) the preparation of carbon nanotube agglomerates, comprising forming a catalyst precursor by precipitating a solution of metal salts of metals of group VIII, preferably iron, cobalt or nickel, with metal salts of metals of VI or VII group, preferably manganese, molybdenum, chromium or tungsten on a carrier, preferably oxide, hydroxide, or optionally its hydrates, or co-precipitating the metal salt solution, preferably to oxides and/or hydroxides or optionally their hydrates, with one or more metal compounds of aluminum, magnesium, silicon, zirconium or titanium, removing the solvents from the catalyst precursor, subsequently thermally treating the catalyst precursor, where the catalyst precursor during the thermal treatment is subjected to a high-temperature calcination in the presence of non-reducing gases, optionally under reduced pressure, preferably in the presence of air at at least 800 degrees C, optionally subjecting the obtained catalyst to a reductive treatment and catalytically decomposing carbon precursor compounds, which are hydrocarbon, preferably acetylene, methane, ethane, ethylene (preferred), butane, butene, butadiene, benzene, alkyl benzene, preferably toluene or xylene in the obtained catalyst at at least 500 degrees C in the presence of hydrogen and carbon containing precursors, preferably hydrocarbons, and isolating the obtained carbon nanotube agglomerates; and    (2) mixtures or composites comprising carbon nanotubes, prepared by the addition of agglomerates to polymers, rubber, ceramics, metals, metal alloys, glass or textile fibers.