A new tunnel kiln for the high-temperature firing of magnesian refractories

An updated microprocessor-based version of a tunnel kiln for production of high-grade magnesian refractories is presented. Improvements achieved in engineering and economic figures are discussed. __________ Translated from Novye Ogneupory, No. 5, pp. 18–20, May, 2006.     

Investigation of the Adhesion of Potassium Chloride to the Structural Materials of Equipment Surface

Chemical and Petroleum Engineering - The results of experimental studies of the adhesion of wetted fine fractions of flotation potassium chloride to the surface of various materials in the drying...     

Diffusion form of the transport equation and the method of kinetic diffusion (application to one-dimensional planar geometry)

A form of the transport equation with the same structure as the elementary diffusion equation is proposed. It is distinguished by the fact that the diffusion coefficient depends not only on the properties of the medium but also on certain angular moments of the differential flux. The existence of a reciprocal relation between the angular moments and the spatial distribution of the scalar flux makes it possible to obtain an exact numerical solution of the transport equation, expressed in diffusion form, by means of a simple iteration pocedure (the method of kinetic diffusion). The relation between the transport equation in the diffusion form and the elementary theory of diffusion is examined, the results of calculations of certain variants of the the Milne problem are presented, and the inherent properties of the method, which make it effective in many practical applications, are noted. 3 Tables, 5 references. Federal Science Center of the Russian Federation—Institute of Theoretical and Experimental Physics. Translated from Atomnaya Energiya, Vol. 86, No. 1, pp. 16–27, January, 1999.     

Sorption of Pu and Np on chitin-containing materials from strongly alkaline solutions

Sorption of Pu and Np on chitin, chitosan, and chitin-containing materials from strongly alkaline (1–4 M NaOH) solutions was studied under the static and dynamic conditions in the presence of large amounts of NaNO₃. The Pu(IV) distribution coefficient (K _d) between the solutions with the NaOH concentration ranging from 1 to 4 M and different chitin-containing sorbents varies from 3000 to 6000 cm³ g^?1. The K _d of Np(V) with different sorbents decreases from 2000–4000 to 600–1200 cm³ g^?1 with increasing NaOH concentration.     

Electrochemical Oxidation in Aqueous Solutions of Organic Complexing Agents and Surfactants

Radiochemistry - The electrochemical oxidation (ECO) of aqueous solutions of organic complexing agents [ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA),...