Development and Industrial Tests of the TiB2-Based Composite Material for Local Fractures Repairing of Electrolyzer Bottom Blocks

Russian Journal of Non-Ferrous Metals - The composition and fabrication technology of a repair mixture consisting of unmolded corundum with a TiB2–C composite coating wettable with aluminum...     

Intensification of the Dissolution Process of Rebellious Gold-Bearing Products under Action of a Flow of Accelerated Electrons

An evaluation is made for the effectiveness of using a flow of accelerated electrons to help dissolve rebellious gold-bearing gravitational concentrate of variable coarseness. The article examines the effect of the liquid phase and the time the concentrate is held between irradiation and cyanidation on the indices that characterize the increase in the quantity of noble metals extracted in the productive solution.     

Analysis of the properties of heat insulation materials based on Tatar deposit vermiculite

Development of a new lining material with high chemical and deformation resistance based on vermiculite is described. Properties of the objects obtained are provided that are not surpassed by overseas analogs. This achievement is due to the use of a rational combination of raw material properties and technology regime parameters. In efficiency, material based on vermiculite may replace diatomite materials used traditionally. Use of objects based on vermiculite, having a density lower by a factor of three and lower thermal conductivity by a factor of six instead of traditional heat insulation material, i.e. chamotte, opens the possibility of a reduction in material content. The higher deformation resistance of the material promotes an increase in electrolyzer service life. Therefore, objects based on vermiculite may be used successfully for heat insulation not only in non-ferrous metallurgy installations, but also in thermal power engineering equipment, and in the construction of objects for industrial and domestic purposes. Translated from Novye Ogneupory, No. 3, pp. 5 – 10, March 2009.     

Influence of liquid phase and products of its radiolysis on surface properties of pyrite and arsenopyrite

A feasibility study has been made on improving the contrast of processing properties of pyrite and arsenopyrite, irradiated by accelerated electrons, when these minerals are in the form of neutral, weakly alkaline, and alkaline aqueous suspensions. It has been shown that as a consequence of change in the surface composition, sorption species, and quantity of adsorbed xanthate and its derivatives, the contrast of flotation properties of pyrite and arsenopyrite can be increased by regulating the irradiation dose of the mineral suspension. Institute of Problems of Complex Development of Bowels, Russian Academy of Sciences, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 85–91, January–February, 1999.