Results are provided for the development and introduction into production of high-alumina objects of different grades based on andalusite. Physiochemical indices, and fields of application for objects in various heating units are indicated.High-alumina refractories are some of the most used. Traditional high-alumina materials, prepared on the basis of alumina or bauxite, do not respond to the contemporary level of requirements for reliability and endurance. A solution of this problem is production of new refractories based on andalusite. Such qualities of andalusite as high purity, sufficient volumetric stability, low porosity, active mullitization, low thermal conductivity, give rise to its use in producing high quality refractories [1].The preference for using andalusite within the composition of refractory objects compared with high-alumina chamotte is due to the physicochemical features of this material. Andalusite is a natural "mullite former". During hightemperature firing it is converted into mullite, and the excess silica forms a comparatively small amount of glass phase, exhibiting high porosity, and it is concentrated in capillary pores of a grain [2] (Fig. 1). Thus, after firing of refractory based on andalusite it becomes and entirely new material, consisting of primary and secondary mullite and a small amount of highly bonded glass phase, that provides new refractory properties incomparable with those of high-alumina refractories of other forms.Currently for lining air coolers and the bottom glass furnaces, lining steel-pouring ladles, mobile mixers and anode firing furnaces, there is extensive use of domestic mullite and mullite-corundum grades MKV-72, MLS-62, MKS-72, MLLD, based on high-alumina chamotte, prepared from alumina and kaolin. For these refractories there is typically a significant amount of glass (Fig. 2a ) exhibiting reduced toughness at high temperature and nonuniform distribution, that promotes a reduction the high-temperature strength of objects under load, low resistance to cracking due to microstress development, that arises during thermal shock.Specialists of OAO BKO have developed and introduced into production high-alumina objects grade MLUT-62, MLUT-69, MKP-72, manufactured on the basis of andalusite. Objects may be used for lining mobile mixers, iron-carrying and steel-pouring ladles, the upper cone and upper part of the shaft of a blast furnace, and also anode firing furnaces