SU66560A1 - Furnace for the implementation of the method of processing scrap and waste tungsten alloys - Google Patents

Description

FURNACE FOR IMPLEMENTATION OF THE METHOD OF PROCESSING OF MARRIAGE AND WASTE OF PRODUCTION OF TUNGSTEN ALLOYS

It was announced on 10 November 1944 in Narkomtsvetmet for No. 1636 (335669). Published on December 31, 1946

The original copyright author .Ys 65269 dated December 31, 1946 by P. M. Porkhunov and I. A. Alekseev

The MAIN copyright certificate No. 65269 proposes a method for processing scrap and waste from the production of tungsten alloys, based on the conversion of tungsten into water soluble salts of tungsten acid, and of impurities and add-on metals into water-insoluble oxides. The difference is the way auth. Evidence No. 65269 is that tungsten alloys or wastes are treated with molten and heated to a temperature of 700-800 ° nitrate by immersing pieces of tungsten alloys in the solution of the latter.

With this method of processing scrap and wastes from the production of tungsten alloys, molten niter at a temperature of about 700-800 ° C, reacting with tungsten carbides, forms a liquid mass easily seeping through the seams (And the pores of the brick, and unreacted nitrate, decomposed, separating There are gases that destroy the metallic "furnace bath".

Infusion w; its invention relates to "furnaces for carrying out the method according to the main author's testimony and is intended to pre (preserve the bath casing from the corrosive effect of molten saltpeter and gases released during the reaction. For this, the casing is footed with a light-resistant material such as magnesite, made cooled outside. Molten reaction products flowing through the gaps, cracks and pores of the lining, when in contact with the cold walls, solidify and create a seal of the bath.

The drawing shows a longitudinal section of the proposed furnace for carrying out the method for processing scrap and the production of tungsten alloys proposed by the main author's certificate.

The furnace consists of a bath 5, a sneaker 5, a metal casing / and a lining 2 made of refractory material, for example, magnet.

The heating of the bath 5 is carried out from the side of its inner surface, which makes it possible not to latch the metal of the casing.

For heating the wahan serves as a firebox 3, separated from the vain by a small air gap 4. Release from BLNNY (The obtained sodium tungstate is produced through a tapping hole (shown in the figure de), which is smeared with the time of the reaction process with refractory clay.

The molten reaction products (wolfram sodium), flowed through uiiBtr :: yiTepOBKa S and come into contact with a similar metallic surface.) Ryu1 6zhuha U, freeze to create a molten bath

PRE D MI et inventions

The furnace for the implementation of the method of processing waste and production of the ileum x alloys according to the author's testimony 65269, characterized in that in order to protect the metal casing from K0 | pp0 the directing effect of molten nitrate and gases emitting in , for example, magnesite and is cooled outside, so that the molten reaction products flowing through the gaps, cracks and lining pores in contact with the cold walls harden and create lotnenie bath.