US837160A

US837160A - Production of fused metals and alloys from oxids, &c.

Info

Publication number: US837160A
Application number: US27545905A
Authority: US
Inventors: Claude Vautin
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-08-23
Filing date: 1905-08-23
Publication date: 1906-11-27
Anticipated expiration: 1923-11-27

Description

- UN TED STATES PATENT 4 onrron.

CLAUDE vau'rm, or LONDON, ENGLAND.

PRODUCTION 0E FUSEQLMETALS AND ALLOYSFFROMIOXIDS, 8.0. i

mixed with metallic oxids, chlorids, &c. andignited will give rise to a considerable evolution of heat, accompanied'by the production of the metal or alloy.

Processes have hitherto been suggested for the production of metals from their compounds by mixing and igniting the latter with finely-divided metallic aluminium. I have now discovered that a similar result may be brought about ina more economical an d eflicient manner by mixing with the metallic compound to be treated a corn ound of a more electropositive metal with s' icon and igniting the mixture. The electropositive metal. is preferably an earth metal, such as magnesium or aluminium, so that magnesium silicide or aluminium silicide is then used as the reducing agent.

According to this invention an oxid, such as iron oxid, is mixed with one of these compounds or alloys and is ignited, when the silicides are converted into silicates and the metallic ironis produced ina fused state. Oxids,

. chlorids, &c., of other metals, such as chrornium, may be similarly treated; l The reaction in the case of magnesium silicide can be represented as follows:

iFe2Q3+ 6M2, SFB, or in the case of aluminium silicide as follows:

broken machinery, and the like.

As an example of one application of this invention the following is a description of the method of welding rails: A suitable mold is prepared and placed in position around the ends of the rails which it is proposed to weld or bond together, and into a crucible or similar Specification of Letters Patent; Application fine August 23.1905. Serial No. 275,459.-

ing the desired temperature, or by electric on the top of the iron, (whereby the heat Patented Nov. 27, 1906.

' vessel is introduced an intimate mixture of finely-divided iron oxid and finely-divided aluminium silicide or borid or magnesium silicide or borid in such proportions that the iron oxid is slightly in excess of the quantity required by the equation expressing the reaction, from the reaction shall be as free as possible from aluminium, magnesium, or silicon, as the ca'se may be. The reaction is started by the application of a high temperature at any given point in the mixture in the crucible by any suitable means-say by a blowpipe-fiame or any chemical reaction capable of producmeans, or in any other well-known way. The reaction when started proceeds throughout the mass without the application of any external heat, producing highly-heated metallic iron and a slag consisting of silicate or borate of alumina or magnesia. When the reaction is at an end, the molten iron is cast .into the mold and onto or around the railjoints to be welded, with the result thatin consequence of the high temperature of the iron the rails which come into contact with the molten iron and the added iron itself become welded into one homogeneous and continuous rail.

When this invention is used for the reductionof iron oxid, as in the welding rocess just described, it will be found that a 'er the reaction is over the contents of the crucible will consist of a layer of molten iron covered by a layer of slag, and accordin to the wish of the operator, guided by the c ass of joint, weld, or repair which is being made, the iron ma be tapped from the bottom of the cru cib e or like vessel free from slag and run into the mold, and, if desired, the slag may follow of the slag may in some cases be utilized to' advantage). or the slag may be removed from the surface of the molten iron by suitable means and the iron then poured over the rec lip of the crucible into themold, or the slag may be poured first and then the iron, the method followed. being decided by the circumstances.

Aluminium and magnesium form alloys or 105 compounds with silicon containing various proportions of the constituents, and any of these compounds or alloys may be employed.

It is to be understood that the agent used to reduce the oxid ofv iron or tl a like is notno so that the metallic iron resulting magnesium or aluminium per se, but is a novel compound or alloy of one of these I more electroposit ve metal with silicon and t igniting the mixture.

com ound with a silicide of an earth v2. The herein-described process of producmg fused metals and alloys from metallic compounds which consists in mixing said metal and igniting the-mixture. 1

3. The herein-described process of producing: fused metals and alloys from metal-lie compounds which-consists in mixing said compound-with silicide of,aluminium and igniting the mixture.

4. The herein-described process-of producing fused' iron from iron oxid which consists in mixing the iron oxid with a compound of a more electropositive metal with silicon and igniting the mixture.

5. The herein-described process of producing fused iron from iron oxid which consists in mixingthe iron oxid with a silicide of an earth metal and igniting the mixture.

6. The herein-described process of producingfused iron from iron oxid which consists in mixing the iron oxid with silicide of aluminium and lgmting the mixture.

7. The herein-described process of producing fused iron from iron oxid which consists in mlxing powdered 11011 oxid with powdered silicide of aluminium and igniting the mixture. o

In testimony whereof I have signed -my name to this specification inthe presence of two subscribing Witnesses.

CLAUDE VAUTIN; 4 Witnesses: v j

'HAROLD WADE,

IIARRY B. BRIDGE.