US980606A - Process of granulating molten slag. - Google Patents

Process of granulating molten slag. Download PDF

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Publication number
US980606A
US980606A US54960510A US1910549605A US980606A US 980606 A US980606 A US 980606A US 54960510 A US54960510 A US 54960510A US 1910549605 A US1910549605 A US 1910549605A US 980606 A US980606 A US 980606A
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Prior art keywords
slag
stream
molten slag
granulating
drum
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US54960510A
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Heinrich Colloseus
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/026—Methods of cooling or quenching molten slag using air, inert gases or removable conductive bodies
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/052—Apparatus features including rotating parts
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/052—Apparatus features including rotating parts
    • C21B2400/056—Drums whereby slag is poured on or in between
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/062—Jet nozzles or pressurised fluids for cooling, fragmenting or atomising slag

Definitions

  • This invention relates to an improved process for granulating molten slag.
  • l lt has already been proposed to cause a stream of molten slag to fall upon a drum rotating at a high speed and provided at its outer clrcumference with a number of nozzles, through which liquid was spra ed through the stream of molten slag.
  • the nozzle-drum had a double duty to perform, viz. firstly to break up the stream or duid, and secondly to break up the stream of slag.
  • a better result is obtained b breaking up the stream of molten slag be ore it reaches the revolving drum.
  • the slag may be broken ,up in any well-known manner, for instance by a nozzle; preferabl the nozzle for breaking o the stream of s a is arranged behind the owing slag and a ve the revolving nozzle-drum, so tliat a more or less horizontal stream of air, liquid or steam is blown through the stream of slag. With this arrangement the ne division of the slag and partly also its treatment with a solvent may take place at the same point.
  • the nozzledrum lls the space throu h which the linely divided slag has passes with the vapor, which may e combined with liquids ada ted for the treatment of the slag, such as or example salts in solution, so that the stream of -nely divided slag is forced to pass in a regular manner through a layer of such finely divided liquids.
  • liquids ada ted for the treatment of the slag such as or example salts in solution
  • Figure l re resents an apparatus for granulating mo ten slag in longitudinal section in the direction of the movin slag
  • Fi 2 is a section ⁇ on line A, B, o Fig. 1.
  • In thedrawmgs a represents the revolving nozzle-drum which serves the purpose of the linely divided sla lling the space c in which the granulation takes place with finely s rayed liquid.
  • liquid for instance a sa t solution, say of sulfate of magnesium is introduced into the interior of the drum by means of ipes 11,6.
  • the molten slag for instance last furnace slag is introduced through the channel ol.
  • Below this channel there is a pipe e and a second pipe f one of which serves for introducing a stream of steam or* liquid while the other serves as a conduit for anl air current.
  • Either steam, liquid or air may be used to deflect and disintegratethe current of slag g or -two of these means or all three of them may be used simultaneously for this' pur ose.
  • 'I e nozzle-drum is shown in Fig. 2 partly in section and partly in elevation so that the slots h through which the liquid enters are fully shown.
  • the nozzle-drum is rotated by means of the power pulley z'.
  • I claim 1 The process of granulating molten slag consisting in subjecting a stream of molten slag to the action" of a nearly horizontally applied current of a iuid which is adapted to break up said slag, and then subjecting to the action of rotating streams of line y divided liquid,

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Manufacture Of Iron (AREA)

Description

H. coLLosUs.
PROCESS '0F GRANULATING MOLTEN SLAG.
APPLIOATIONVIILED MAB. 16. 1910.
980,606. 4 PatentedJ.f11,1L?v1911.l
| j? if? H. CDLLOSEUS. PRooBss or GRANULATING MOLTBN SLAG.
v APPLIOATION FILED MABJB, 1910. V l v 980,606, V Patented Jan.3, 1911.
je rele for.'
y w1 JW HEINRICH COLL'OSEUS, 0F BERLIN, GERMANY.
PRQCESSYOF GRANULATING MLTEN SLAG.`
aseos.
Specification of Letters Patent.
Patented Jan.y 3; i911.
'Application tiled March 16, 1910. Serial No. 549,605.
To all whom it may concern: I Be it known that I, HEINRICH Communs, a subject of the King of Prussia, and resident of 27 Regnsburgerstrasse, BerlinGer man Empire, ave invented anew an Imroved Process for Granulating Molten lag, of which kthe following is a specification.
This invention relates to an improved process for granulating molten slag. l lt has already been proposed to cause a stream of molten slag to fall upon a drum rotating at a high speed and provided at its outer clrcumference with a number of nozzles, through which liquid was spra ed through the stream of molten slag. ith this arrangement the nozzle-drum had a double duty to perform, viz. firstly to break up the stream or duid, and secondly to break up the stream of slag. I have found that a better result is obtained b breaking up the stream of molten slag be ore it reaches the revolving drum. The slag may be broken ,up in any well-known manner, for instance by a nozzle; preferabl the nozzle for breaking o the stream of s a is arranged behind the owing slag and a ve the revolving nozzle-drum, so tliat a more or less horizontal stream of air, liquid or steam is blown through the stream of slag. With this arrangement the ne division of the slag and partly also its treatment with a solvent may take place at the same point. The nozzledrum lls the space throu h which the linely divided slag has passe with the vapor, which may e combined with liquids ada ted for the treatment of the slag, such as or example salts in solution, so that the stream of -nely divided slag is forced to pass in a regular manner through a layer of such finely divided liquids.- In this manner the i stream of liquids can be conveniently conducted and easily min led with the stream of slag to be converte The process is carried yout in suitable apparatus of which one form is shown in the accompanying drawings in which:
Figure l re resents an apparatus for granulating mo ten slag in longitudinal section in the direction of the movin slag, and Fi 2 is a section `on line A, B, o Fig. 1.
imilar letters of reference denote like parts in both gures.
In thedrawmgs a represents the revolving nozzle-drum which serves the purpose of the linely divided sla lling the space c in which the granulation takes place with finely s rayed liquid. Such liquid, for instance a sa t solution, say of sulfate of magnesium is introduced into the interior of the drum by means of ipes 11,6. The molten slag, for instance last furnace slag is introduced through the channel ol. Below this channel there is a pipe e and a second pipe f one of which serves for introducing a stream of steam or* liquid while the other serves as a conduit for anl air current. Either steam, liquid or air may be used to deflect and disintegratethe current of slag g or -two of these means or all three of them may be used simultaneously for this' pur ose.
'I e nozzle-drum is shown in Fig. 2 partly in section and partly in elevation so that the slots h through which the liquid enters are fully shown. The nozzle-drum is rotated by means of the power pulley z'. To
4prevent particles of slag from fallmg onto the shaft of the drum whereby same might be heated and injured conical guards c, are provided and l represents a? funnel through which obnoxious or injurious gases may escape.
I claim 1. The process of granulating molten slag consisting in subjecting a stream of molten slag to the action" of a nearly horizontally applied current of a iuid which is adapted to break up said slag, and then subjecting to the action of rotating streams of line y divided liquid,
2. The process of granulating molten slag consistin in subjecting a stream of molten slag to t e action of a nearly horizontally applied current of a gaseous uid which is a apted to break u said slag, and then subjecting the nely ivided slag to the action of rotating4 streams "of finely divided liquid.
3. The process of granulating molten slag consisting in subjecting the stream of molten
US54960510A 1910-03-16 1910-03-16 Process of granulating molten slag. Expired - Lifetime US980606A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450978A (en) * 1944-07-03 1948-10-12 Leona Templeton Caldwell Method and apparatus for production of expanded slag
US3531270A (en) * 1967-04-10 1970-09-29 Intern Steel Slag Corp Molten steel slag handling method and apparatus
US3877914A (en) * 1973-06-18 1975-04-15 Potters Industries Inc Method and apparatus for making glass spheres
US6732547B1 (en) * 1999-03-10 2004-05-11 Jfe Steel Corporation Method for the treating stainless steel refining slag

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450978A (en) * 1944-07-03 1948-10-12 Leona Templeton Caldwell Method and apparatus for production of expanded slag
US3531270A (en) * 1967-04-10 1970-09-29 Intern Steel Slag Corp Molten steel slag handling method and apparatus
US3877914A (en) * 1973-06-18 1975-04-15 Potters Industries Inc Method and apparatus for making glass spheres
US6732547B1 (en) * 1999-03-10 2004-05-11 Jfe Steel Corporation Method for the treating stainless steel refining slag

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