GB821741A - Method and apparatus for the manufacture of a porous slag - Google Patents

Method and apparatus for the manufacture of a porous slag

Info

Publication number
GB821741A
GB821741A GB14698/57A GB1469857A GB821741A GB 821741 A GB821741 A GB 821741A GB 14698/57 A GB14698/57 A GB 14698/57A GB 1469857 A GB1469857 A GB 1469857A GB 821741 A GB821741 A GB 821741A
Authority
GB
United Kingdom
Prior art keywords
slag
poise
conveyer
temperature
viscosity
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
GB14698/57A
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.)
Energie-Versorgung Schwaben AG
Original Assignee
Energie-Versorgung Schwaben 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 Energie-Versorgung Schwaben AG filed Critical Energie-Versorgung Schwaben AG
Publication of GB821741A publication Critical patent/GB821741A/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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00—Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 
    • C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
    • 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
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • 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
    • C21B2400/06—Conveyors on which slag is cooled
    • 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
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank

Abstract

821,741. Porous slag. ENERGIE-VERSORGUNG SCHWABEN A. G. May 8, 1957 [May 19, 1956; March 9, 1957], No. 14698/57. Class 22. Porous slag is manufactured from acid vessel slag by cooling the liquid slag in a series of stages, comprising first reducing the temperature of a liquid slag stream to a level at which dissolved gases are freed, the viscosity in this first period being in the range of from 2.10<SP>4</SP> to 8.10<SP>4</SP> poise up to 2.10<SP>7</SP> to 10<SP>8</SP> poise, reducing the temperature at an accelerated rate in a second period until a viscosity of 109 poise is reached, slowly reducing the temperature in a third period over a viscosity range of 109 to 1013 poise, and finally reducing the temperature in a fourth period to obtain a glass-like porous product of viscosity above 10<SP>13</SP> poise. For a specified slag composition, temperatures of 900‹C., 700‹C., 560‹C., and 490‹C., correspond with the viscosity values of 2.10<SP>4</SP> to 8.10<SP>4</SP>, 2.10<SP>7</SP> to 10<SP>8</SP>, 109 and 1013 poise respectively. In Fig. 1, a stream 2 of acid vessel slag flows down a shaft 1 towards an endless conveyer 5 running over rollers 3, 4 in an airtight channel 6. Material acting as nuclei for gas bubbles e.g. wood-flour, brick- or tiledust, and also a combustible material e.g. coal powder or oil mixed with coal, shale, clay, rock or gangue, can be introduced into the stream 2 by devices, not shown, at a slag temperature 1300‹C., the slag cooling to 900‹C. upon reaching the conveyer. Water and/or air from nozzles 7 and 8 cool the slag on the conveyer 5 from 900‹C. to 700‹C., a shaft 11 serving to remove freed gases. The slag, now viscous, is cooled from 700‹C. to 560‹C. around the roller 4 by water or pressurized air, and jumps off automatically from the conveyer or is remove by a stripper 12. The slag is cooled from 560‹C. to 490‹C. in a shaft 16, the lower end of which dips below the level of water in a basin 17, the completely cooled slag being removed by a conveyer 18. Shaft 19 and basin 20 constitute a safety device whereby slag may fall directly from stream 2 to be quenched by water in the basin 20.
GB14698/57A 1956-05-19 1957-05-08 Method and apparatus for the manufacture of a porous slag Expired GB821741A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE821741X 1956-05-19

Publications (1)

Publication Number Publication Date
GB821741A true GB821741A (en) 1959-10-14

Family

ID=6741106

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14698/57A Expired GB821741A (en) 1956-05-19 1957-05-08 Method and apparatus for the manufacture of a porous slag

Country Status (1)

Country Link
GB (1) GB821741A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU91766B1 (en) * 2010-12-15 2012-06-18 Wurth Paul Sa Granulation of metallurgical slag
US20150152009A1 (en) * 2012-07-25 2015-06-04 Kongju National University Industry-University Cooperation Foundation Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same
CN113061018A (en) * 2021-03-20 2021-07-02 北票天宝耐火材料有限公司 Method for manufacturing landscape brick and archaized brick high-grade building material by using coal gangue

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU91766B1 (en) * 2010-12-15 2012-06-18 Wurth Paul Sa Granulation of metallurgical slag
WO2012080364A1 (en) * 2010-12-15 2012-06-21 Paul Wurth S.A. Granulation of metallurgical slag
US9371571B2 (en) 2010-12-15 2016-06-21 Paul Wurth S.A. Granulation of metallurgical slag
EA025541B1 (en) * 2010-12-15 2017-01-30 Поль Вурт С.А. Process for granulation of metallurgical slag
US20150152009A1 (en) * 2012-07-25 2015-06-04 Kongju National University Industry-University Cooperation Foundation Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same
US10065892B2 (en) * 2012-07-25 2018-09-04 Jin-Man Kim Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same
CN113061018A (en) * 2021-03-20 2021-07-02 北票天宝耐火材料有限公司 Method for manufacturing landscape brick and archaized brick high-grade building material by using coal gangue

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