US2381675A

US2381675A - Briquettes for alloying

Info

Publication number: US2381675A
Application number: US422674A
Authority: US
Inventors: Linz Arthur
Original assignee: Climax Molybdenum Co
Current assignee: Climax Molybdenum Co
Priority date: 1941-12-12
Filing date: 1941-12-12
Publication date: 1945-08-07
Anticipated expiration: 1962-08-07

Description

Patented Aug. 7, 1945 i N' niet BBIQUETTES FR ALLYING Arthur Linz, New York, N. Y., nssiynor to @limon Molybdenum Company, New Worn, N. Y., u oorporation ci Delaware Application December l2, will, derlei No. @2,6%

(ci. ils-iss) ll Claims.

rI'he present invention relates to e new and useful process for the production of self-reducing briquettes for use in alloying.

Objects and advantages of the invention will be set forth in part hereinafter and in port will be obvious herefrom, or may be learned by practice with the invention, the same being realized and atteined by means of the processes, steps und combinations pointed out in the appended claims.

The invention consists in the novel steps, proceuses, combinations and improvements herein shown and described.

The uccompenying drawing, referred to herel und constituting a part hereof, illustrates vone iorm oi apparatus for carrying out the process ci the invention und, together with the description, serves to explain the principles of the invention.

The single figure of the drawing is a schematic vievv showing diagrammatically one form of appnratus useful in connection with the process of the present invention. y

The present invention is in certain respects en improvement upon my prior Potent No. 2,134,616 but in other respects is of more genere! appliestion. The invention has ior its object the provision or" e. novel and improved process for the manuisfcture of self-reducing briquettes oi metallic ondes ior use in the production of alloys. A further object is the provision oi' en improved inetellic oxide briquette which is dense, relatively nonn'frinble und can be quickly and completely reduced to the metallic form by addition tomolten or melting Jferrous metal.

in eccordance with the process ofthe present invention which is applicable to the production ci sell-reducing bi'lquettes oi molybdenum oxide, tunesten oxide, vanadium oxide and the like, the nietellic oxide ci the alloying'metal in a relatively line stete oi division, together with other constituents ii desired, is blown into e chamber into which Vis simultoneously blown a relatively iine spray,

regulated in quantity, of heated bitumen or esphslt binder or other liquiable carboneceous binding material, the sprayed material being caused to min in such chamber, so that the individual purticles ci ltlie metsllic oxide become coated withI or intlnistely mixed with the bitumen after which the mixture settles and may be removed from the chercher, and pressed into briquettes.

it will be understood thet the foregoing general description end, the following detailed description es well are exemplary and explanatory of the invention but are not restrictive thereof.

More specifically, the metallic oxide muy comprise molybdenum trioxlde, roasted molybdenlte concentrates, molybdenum dioxide, reduced roosted molybdeniteconcentretes, tungstic trionide or lower oxides of tungsten, venadium oxide end the like, together, if desired, with relatively smell additions oi other material such as powdered aluminium, calcium, silicon or megnesium.

The bituminous materiel may comprise still.Y

'ized enel sprayed into the mixing end settling chamber 'i in the form oi a tine dust by moons of the air issuing from the end of the compressed cir pipe t.

The bituminous material is liquiiled by heat in the supply tenir t and is pumped. by pump iii into the vessel it from which it may overflow through pipe llt into the tank from the vessel it isa pipe it the end of which is in aspirstine relation to the end or compressed cir pipe ifi so that the liuuiled bituminous ina`= terial is sprayed into the chamber l under sud-lcient pressure to form a2 cloud-like spray which is intinmtely mined with the metallic oxide dust, to cost the dust perticles `with bitumen.

The feed ci screur and the amount of bitumen sprayed are preferably so regulated that the resul'tcnt mixture contains about 10% of bitumen. The coated metallic dustcollectsin chamber l and is removed therefrom by screv.Y conveyor l 'The mined metallic oxide end bitumen is then passed to a briquettine press Where it is formed into briquettes of the desired sise and shape. It is iound, that due to the intimate mixture of the bitumen and metallic milde, the briquettes can be formed with less pressure than has heretofore been required, the briquettes are even more dense und less friuble, and'react much more quickly when used in accordance with the process of my said potent.

The invention in its broeder aspects is not liniited to the specific processes und steps shown end described but departures muy be mede therefrom within the scope oi the accompanying claims without deperting from the principles oi the lne vention and without sacrificing; its chief edvanteees.

Extending upwardly' 2 i masacre What I claim is:

1. A process for the production of alioyig briquettes which comprisesblowing la nely divided metallic oxide selected from the group consisting oi' the oxides oi' molybdenum, tungsten and vanadium into a chamber, simultaneously spraying into said chamber a iiquitled carbonaceous binding material-to cause the metallic oxide and carbonaceous material to be intimately mixed, dividing the mixture and subjecting it to pressure to form dense self-reducing alloying briquets of the metallic oxide. y

2. A process for the production oi alloying briquettes which comprises blowing a finely divided molybdenum oxide into a chamber, simultaneously spraying into said chamber a liquiiied carbonaceous binding material to cause the molybdenum oxide and carbonaceous material to be intimately mixed, dividing the mixture and subjecting it topressure to form dense self-reducing al- 20 loyingbriquettes of the metallic oxide.

3. A process tor the production ot alloying briquettes which comprises blowing a iineiy divided timgsten oxide vinto a chamber. simultaneously spraying into said chamber a liquiiied carbonaoeous binding material to cause the tungsten oxide and carbonaceous material to be intimately mixed. dividing the mixture and subjecting it to pressure to form dense self-reducing alloying briquettes of the metallic oxide. s

4. A process for the production of alloying briquettea which comprises blowing a finely divided vanadium oxide into a chamber, simultaneously spraying into said chamber a liquiiied carbonaceous binding material to cause the vanadium oxide and carbonaceous material to be intimately mixed, dividing the mixture and subjecting it to pressure to form dense self-reducing alloying briquettes of the metallic oxide.

. ARTHUR LINZ.