US2336657A

US2336657A - Apparatus fob direct

Info

Publication number: US2336657A
Authority: US
Publication date: 1943-12-14
Anticipated expiration: 1960-12-14

Description

E. VIGNEAULT 2,336,657 FOR DIRECT, RAPID, AND CONTINUOUS TING NON-FERROUS METALS Filed June 30. 1941 APPARATUS MEL 7` iw M my 9 @y f ZUM/zd Patented Dec. 14, 1943 APPARATUS FOR DIRECT, RAPID, AND CON- TINUOUS MELTING 0F NONFERROUS METALS Edmond Vigneault, Three Rivers, Quebec,

Canad Application June 30, 1941, Serial No. 400,406

1 Claim. (Cl. 266-33) is in the nature of a iire chamber designated by The present invention pertains to a novel apparatus and method for direct, rapid and continuous melting of non-ferrous metals. The principal object of the invention is to melt metal continuously by the application of heat in a novel manner.

More specifically, the heat is applied in the form of a heat jet injected directly into the melting chamber and in direct contact with the lower part of the metal filling the said melting chamber. The oil burner is in perfect combustion and heat is injected as the combustion product of a fully controlled mixture of oil and air in correct proportions, as a result of which there is an exothermic reaction at the metal and consequently immediate fusion at the surfaces thereof. Further, the melting chamber being provided with a chimney for entering the metal to be melted, the metal not in contact with the heat jet is-preheated by the escaping gases.

In order that the process may proceed at a speedy and uniform rate, I provide for the im` mediate withdrawal of the molten metal. This is done by means of a spout extending from the bottom of the melting chamber and preferably at a point opposite the point of heat injection.

Another object of the invention is to maintain the metal in molten condition after it has been withdrawn from the melting chamber. This object is accomplished by permitting the molten metal to flow from the spout into a portable receiver which is provided with means for the injection of an auxiliary heat jet. In this operation, use is made of 'the principle that insulated molten metal may be maintained in that state by the application of comparatively little heat.`

into a heated vessel, a great economy of time and The larger vessel shown in Figure 1 includes af metal cylinder I lined with a refractory material 2 such as heat-resisting fire brick. The interior the numeral 3.

In one side of the receptacle and near the bottom of the chamber 3 is formed a spout or opening 4 which serves as the intake for the heating medium, as will presently appear. Opposite to the spout 4 and also communicating with the bottom of the chamber 3 is a discharge spout 6 for the molten metal;

A quantity of metal in the form of blocks or the like is dropped through the flue I4 to the bottom of the chamber 3, said quantity in rigid form may rise to the top, and the heat for melting the same is, provided by a specially constructed oilburner 5 positioned to throw a flame into the passage 4. This burner is designed to discharge a ame in perfect combustion and is described in detail in my co-pending application, Serial No. 389,822, filed April 22, 1941.

The invention utilizes the principle whereby a metal in molten condition can be maintained in this state by the use of comparatively little applied heat. Another vessel or receiver 1 is positioned beneath the discharge spout 6 and is preferably mounted in a fire brick receptacle 8, forming therewith an air jacket 9. The member l also has a lateral passage I0 extending to the I the passage I0. The receptacle 8l has handles II for carrying.v and the vessel 'I is equipped with a hinged lid I2.

In order to confine the generated and radiant heat in the chamber 3, the latter is provided with a fire brick cover member I3 in its upper portion. From this member is extended a flue or Achimney I4 for the purpose of providing a gas escape and entrance for the metal to be melted.

The application of heat under perfect combustion produces an exotherrnic reaction and rapid melting of the metallic surface. The molten metal is immediately drawn off through the spout 6 and replaced lautomatically by gravity by the pre-heated metal so that the melting is continuous in the re chamber 3. The molten metal which has been drawn off is maintained in the molten condition in the air-insulated receiver I with or without the application of auxiliary heat, as necessary, and is also replaced by new metal introduced in the flue I4 in order to be pre-heated by the heat of the chamber 3 and escaping gases. The vessel I--I 2 is also useful for transferring the molten metal to another:

point. Thus, the metal is maintained in the molten condition easily and inexpensively.

In the modification shown in Figures 2 and 3, the cover and ilue in the main melting chamber are replaced by a nre brick screen I5.

This de-iv vice further serves the purpose of increasing the asados? What I claim is:

A device for melting metal comprising a firebrick lined receptacle forming a melting chamber, said receptacle having a lateral passage communicating with thebottom of said chamber. said chamber having a vertical wall opposite said passage, means Vi'or injecting an oil flame into said chamber through said passage, and a discharge spout having approximately the diameter of said passage extending 'i'rom the bottom of said chamber at said wall opposite said passage, and a nre-brick screen in the top of said chamber, and having openings therethrough to' the atmosphere, for entering metal in said chamber.

EDMOND VIGNEAULT.