DE553187C - Process for increasing the content of bound silica in the Thomas slag - Google Patents

Process for increasing the content of bound silica in the Thomas slag

Info

Publication number
DE553187C
DE553187C DEV27082D DEV0027082D DE553187C DE 553187 C DE553187 C DE 553187C DE V27082 D DEV27082 D DE V27082D DE V0027082 D DEV0027082 D DE V0027082D DE 553187 C DE553187 C DE 553187C
Authority
DE
Germany
Prior art keywords
slag
sand
increasing
content
bound silica
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEV27082D
Other languages
German (de)
Inventor
Wilhelm Timmerbeil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vereinigte Stahlwerke AG
Original Assignee
Vereinigte Stahlwerke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vereinigte Stahlwerke AG filed Critical Vereinigte Stahlwerke AG
Priority to DEV27082D priority Critical patent/DE553187C/en
Application granted granted Critical
Publication of DE553187C publication Critical patent/DE553187C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/36—Processes yielding slags of special composition

Landscapes

  • 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)

Description

Verfahren zur Erhöhung des Gehalts der Thomasschlacke an gebundener Kieselsäure Es ist bekannt, die#Zitronensäurelöslichkeit von Thomasschlacke durch Zugabe von Sand in den Schlackenkasten während des Abschlackens zu erhöhen. Der Sand geht hierbei jedoch nur in beschränktem Maße in Lösung, da er zum großen Teil von der Auftreffstelle des Schlackenstrahles weggetrieben wird und dann als ungelöster Kuchen oben auf der Schlacke schwimmen bleibt. Um diesem Übelstand abzuhelfen, hat man auch schon die Anwendung eines Rührwerkes und die Zuführung von Sand mittels Preßluft auf den Schlackenstrahl unmittelbar unter der Konverterrnündun.g vorgeschlagen. Doch ist durch diese Verfahren gleichfalls nicht der gewünschte Erfolg erzielt worden und andererseits erweisen sie sich auch den Anforderungen des rauhen Betriebes als nicht gewachsen und zu umständlich.Process for increasing the bound content of the Thomas slag Silicic acid It is known that the # citric acid solubility of Thomas slag is due to it Adding sand to the cinder box during the deslagging process will increase. Of the However, sand only dissolves to a limited extent because it is largely is driven away from the point of impact of the slag jet and then as undissolved Cake remains floating on top of the slag. To remedy this problem, has you also have to use an agitator and the supply of sand by means of Compressed air on the slag jet immediately below the converter runnings suggested. However, these methods have also not achieved the desired success and on the other hand they also prove to be the requirements of the rough operation not grown and too cumbersome.

Es ist weiterhin auch vorgeschlagen worden, den Sand direkt in .den Konverter aufzugeben, doch ist hierbei die zugegebene Sandmenge begrenzt, weil eine zu gering basische Schlacke eine Rückführung des Schwefels in den Stahl zur Folge haben würde.It has also been suggested to put the sand directly into the Abandon converter, but here the amount of sand added is limited because one Too little basic slag results in the sulfur being returned to the steel would have.

Gemäß der Erfindung wird nun diese Aufgabe in einfacher Weise dadurch gelöst, daß durch Zugabe von Feinkohle, Feinkoks oder ähnlichen in der Schlacke Gas entwickelnden Stoffen ein Aufwallen des Schlackenbades bewirkt wird, durch das besonders große Sandmengen gelöst werden. Zweckmäßig werden dabei die Gas entwickelnden Stoffe mit dem Sand vermischt zur Aufgabe gebracht, wobei vorteilhaft daräuf zu achten ist, daß der Sand möglichst trocken ist, um die Temperatur des Schlackenbades nicht vorzeitig zu erniedrigen. Das Aufwallen des Schlackenbades kann jedoch auch in an sich bekannter Weise durch Einblasen von Luft oder anderen Gasen in das Schlackenbad bewirkt werden.According to the invention, this object is now achieved in a simple manner solved that by adding fine coal, fine coke or the like in the slag Gas-evolving substances cause the slag bath to rise up, through which particularly large amounts of sand can be loosened. The gas evolving is expedient Substances mixed with the sand brought to the task, being advantageous to it it is important that the sand is as dry as possible, around the temperature of the slag bath not to humiliate prematurely. However, the swelling of the slag bath can also in a manner known per se by blowing air or other gases into the slag bath be effected.

Claims (2)

PATENTANSPRÜCHE: z. Verfahren zur Erhöhung des Gehaltes der Thomasschlacke an gebundener Kieselsäure durch Zugabe von Sand in das Schlackengefäß, dadurch gekennzeichnet, daß durch Zugabe von Feinkohle, Feinkoks oder ähnlichen in der Schlacke Gas entwickelnden Stoffen ein Aufwallen des Schlackenbades bewirkt wird, durch das besonders große Sandmengen gelöst werden. PATENT CLAIMS: e.g. Process for increasing the content of Thomas slag on bound silica by adding sand to the slag vessel, characterized in that that by adding fine coal, fine coke or the like in the slag gas evolves Substances a surge of the slag bath is caused by the particularly large Quantities of sand are dissolved. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Gas bildenden Stoffe mit dem Sand vermischt zur Aufgabe gelangen.2. The method according to claim i, characterized in that that the gas-forming substances mixed with the sand get to the task.
DEV27082D 1931-07-21 1931-07-21 Process for increasing the content of bound silica in the Thomas slag Expired DE553187C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV27082D DE553187C (en) 1931-07-21 1931-07-21 Process for increasing the content of bound silica in the Thomas slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV27082D DE553187C (en) 1931-07-21 1931-07-21 Process for increasing the content of bound silica in the Thomas slag

Publications (1)

Publication Number Publication Date
DE553187C true DE553187C (en) 1932-07-01

Family

ID=7583135

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV27082D Expired DE553187C (en) 1931-07-21 1931-07-21 Process for increasing the content of bound silica in the Thomas slag

Country Status (1)

Country Link
DE (1) DE553187C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747523C (en) * 1942-02-17 1944-10-04 Kaiser Wilhelm Inst Fuer Eisen Process for increasing the citric acid or ammonium citrate solubility of phosphate slags
DE926852C (en) * 1952-02-09 1955-04-25 Fritz Scherer Method and device for the production of phosphate fertilizers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747523C (en) * 1942-02-17 1944-10-04 Kaiser Wilhelm Inst Fuer Eisen Process for increasing the citric acid or ammonium citrate solubility of phosphate slags
DE926852C (en) * 1952-02-09 1955-04-25 Fritz Scherer Method and device for the production of phosphate fertilizers

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