DE2031929A1 - Method and device for rapid mixing of liquid metals and slag to accelerate certain reactions to ish the two phases - Google Patents

Description

Oasis 298, Oomm. s «= / DBE 94

OENOfRO SPERIiMDAKE MBIALLURGICO S »p.A. , Roa / Italy

Method and apparatus for rapid expansion liquid metals and slag to speed up certain Reactions between the two phases *

The invention relates to a device and relates to calibration to a method for performing a quick Burchaiischena and possible reactions between two or more phases of different density, for example between two or more liquid phases or between liquid phases Phases and particulate pests, if applicable in the presence of a suitable gaseous atmosphere,

009882/1649

BAD ORIGtNAU

The invention relates in particular to an apparatus or on a procedure that requires rapid piercing of the wings Metals and slag are tolerable in order to accelerate certain reactions between the two phases, for example in the case of modification, fresh * or tempering or deoxidization processes Etc.

The procedures proposed so far are many. Bines of this consists in dropping the metal from a considerable height into a vessel which has already Contains molten slag. Another method includes that Use of an exeentrically swinging deflfie »similch a shaker pan in which metal and slag are strong Busamen be perked up.

Another procedure involves the introduction of an aero-eye Agitator in the metal slag bath, which is designed as an impeller made of refractory material.

Another method can be used to stir an inert Sas (argon) are blown in to produce the same effect bu obtain.

However, all of these methods have the disadvantage that they are very considerable Treatment is rarely required due to incomplete mixing.

According to the invention, on the other hand, it should be possible, “in an extreme way fine emulsion through an extremely g? oSe metal licking contact surface bu received. This makes it possible for the treatment * "· shortened for a long time.

A device for the aforementioned measure according to the invention would essentially include a reactor or vessel Bylinderslacher 7orn, which is suitable in bei & en Drehrlch »

009882/1649

■■ - ■ 3 ■ - * ■■ - ■ -.

tungen do themselves to rotate a vertical axis that coincides with the geometric axis of the reactor coincides.

This reactor consists of a metallic container expedient Abmeosungen, the centrifugal force of the Able to hold a bath int; inside he is old lined with refractory material.

The reactor must be provided with suitable facilities a rotation of the reactor alt variable speed and with the possibility of reversing the direction of rotation, zulas-Ββη. Other suitable devices ensure tilting of the reactor and promote the pouring off of the process at the end received product «

To find the suitable gaseous, necessary for the process To maintain atmosphere, the device further comprises at least one injector which is vertical with respect to dee Reactor is movable and is suitable to the desired Blow gases over the free surface of the bath.

For example, the "! For" version of the invention should now are explained in more detail using the accompanying drawing, the eehesfttisch a TertifcalBohnitt through the device aelgt.

With 1 the bath is old in rotation free parabolic flies 2 best leaned; 3 let the container, placed on the pivot 4 are, which are located in grooves 5 of this 6 rotating dumbbell. 7th denotes the end part of a blower; old are 8 denotes the cream courses of Flulden, which the blower leaving.

009882/1649

BATH ORIGINAL

The operation of the device according to the invention shall now be carried out for example, using a method for decarburizing or decarburizing molten pig iron. The hot metal and slag to be emulsified are in the U idle state (without rotation) Given reactor. The reactor will then start rotating own vertical axis offset so that it has a peripheral speed from 200 to 300 m / nin. longs the lateral Inner surface of the lining reached

If the film has been rotated for 2 to 4 minutes, the Reactor shut down for a period of less than 50 seconds and is then rotated again in the opposite direction for a further 2 to 4 minutes. The cycle is terminated, if the reactor has to be shut down »if required, however, a repetition can be carried out will.

laughs after the last shutdown of the reactor and after one suitable dispensing or decanting time of 2 to 5 minutes can the metal in a special transfer vessel (pan) poured and put to its intended use.

During this treatment can if during the procedure one special atmosphere (reducing, oxidizing, inert) is required, any Qas oxygen, hydrogen Methane, argon etc.) blown in via a suitable lance will.

The method and apparatus according to the invention are for others various metallurgical processes useful, for example for mixing a base metal with main alloying elements in the case of son alloy proceedings.

Claims

009 882/16 4 9

BAD ORIQSNAL

Claims (9)

Claims 1. Device for performing the Misehena and Beglicher Reactions between two or more phases are different Density, for example of two or very liquid phases or liquid phases and particulate solids »given · if In the presence of a suitable gaseous atmosphere » characterized by an essentially cylindrical reactor or an essentially cylindrical Gif ÜB, gives way »suitable for rotation in both directions of rotation around one preferably is the vertical axis that coincides with the geometric axis of the vessel. 2. Door direction according to claim 1, characterized in that the reactor made of a metallic vessel of such dimensions exists, since the weight and the centrifugal force of the bath can be absorbed, the oil inside being refractory Material is lined. 3. Device according to one of the preceding claims »characterized by means of suitable devices that set the reactor or the vessel in rotation at varying speeds, "with the possibility of reversing the direction of rotation" 4 · Device according to one of the preceding claims, characterized by at least one injector (7) which can be moved vertically with respect to the reactor (5) and is suitable » the oasis of bubbles that are required to create the appropriate gaseous atmosphere necessary for the process via the to blow free bath surface " 009882/1649 5. Device according to one of «the preceding claims» by means of suitable facilities, (4; 5) see below the reactor or the oeftles and see below pouring out what is obtained Product at the end of the process » 6. Method of mixing and carrying out possible reactions between different or more liquid phases or sic liquid phases and particulate solids, for example sub mixing a liquid metal ait Rinse it in hot converting, deoxidizing or freshening or Quenching and tempering or mixing of a base alloy with a main alloy in alloying processes, characterized That the laughing phases are introduced into a reactor, which turns its axis alternately in both directions of rotation rotates in such a way that the bath during each intermediate sweeping phase A free plan in the essential parabolic east or similarly bestowed due to centrifugal force will. 7. The method according to claim 6, characterized in that dafi one or more warning or cold, inert or reactive, oxidizing or reducing oasis down over the free surface of the bath to form a suitable one be blown in a gaseous atmosphere « 8 «The method according to claim 6 or 7 carried out« it a device according to any one of claims 1 to 5. 9. The method according to one of claims 5 to 8, for example for secarburizing metallic pig iron, wherein the hot metal and the slag, which in a! «ulsion are to be transferred to the reactor without rotation, the reactor then at a Uafangegeschvindigkeit from 200 to 300 "/" in, along the inner side of the 009882/1649 -7 -. ". ■ ■ Outside clothing is measured, set in rotation, the reactor after 2 to 4 minutes for a period shorter than 30 seconds is brought to the silence, he again in the opposite direction Direction is rotated for 2 to 4 minutes, the Reactor is brought to a standstill again and the cycle gev / ink trap is repeated and that the metal and the slag after the last stop from 2 to 5 Minutes to be decanted or poured off and then finally the metal is poured into the pan. 009882/1649 BAD ORlSlNAL Blank page INSPECTED