US3874737A - Slag sand collecting hopper for a slag sand water mixture drainage silo - Google Patents

Slag sand collecting hopper for a slag sand water mixture drainage silo Download PDF

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Publication number
US3874737A
US3874737A US423806A US42380673A US3874737A US 3874737 A US3874737 A US 3874737A US 423806 A US423806 A US 423806A US 42380673 A US42380673 A US 42380673A US 3874737 A US3874737 A US 3874737A
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US
United States
Prior art keywords
hopper
tubular member
slag sand
slag
water
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 - Lifetime
Application number
US423806A
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English (en)
Inventor
Walter Schurhoff
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.)
Hoesch Werke AG
Original Assignee
Hoesch Werke 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 Hoesch Werke AG filed Critical Hoesch Werke AG
Application granted granted Critical
Publication of US3874737A publication Critical patent/US3874737A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0024—Inlets or outlets provided with regulating devices, e.g. valves, flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • 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
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank

Definitions

  • ABSTRACT A slag sand collecting hopper of conical shape having its tip pointing downwardly, in which the upper portion of the hopper is connectable to the lower end of a slag waterdrainage silo while its lower end has an outflow adapted to be connected to a circulating pump for pumping drainage water back into the drainage silo.
  • a power operable tube Arranged in the hopper and coaxial with its outflow is a power operable tube open at both ends and having an inner diameter greater than the diameter of the hopper outflow so that the power operable tube in its lowermost position is seated on the housing wall of the hopper to thereby trap the water-sand mixture in the hopper between the hopper wall and the outside of the power operable tube.
  • the power operable tube is adapted by power operable means to be lifted off the outflow in the hopper but even in such elevated position has its upper edge below the water surface in the hopper.
  • a shaking screen or chute and a conveyor belt are arranged below the discharge opening of said silo.
  • This device is characterized in that at the screening bottom provided with screen slots there is arranged a conical slag sand collecting hopper for a circularing pump therebelow adapted to be turned on and off. Connected to said circulating pump is a conduit which from above leads to the filtering vessel.
  • This device has proved useful, but it has been found that it can be improved, especially with regard to the slag sand collecting hopper. More specifically, the present invention concerns a device for processing slags, especially blast furnace slags, which comprises a drainage silo which serves as filtering ves' sel and has an outlet opening adapted selectively to be closed.
  • the lower end of said silo forms a conical screening cone with a screening bottom and has furthermore associated therewith a shaking screen or chute and a conveyor belt arranged below said outlet opening.
  • a conical screen ing or separating device with a circulating pump that is arranged below said screening or separating device and is adapted selectively to be turned on and off.
  • a conduit coming from above leads into the filtering vessel.
  • HO. 1 illustrates in section the slag sand collecting hopper which is associated with the circulating pump.
  • F10. 2 shows a portion of the outlet of the sand collecting hopper with a pipe adapted to be lifted and lowered.
  • the device according to the present invention is characterized primarily in that the outlet of the conical sand collecting hopper is located at the tip of the cone and is adapted selectively to be closed by a pipe which is located inside said hopper and is adapted centrally to be lifted or lowered.
  • the length of the pipe is so dimensioned that its upper end when in lifted position is still below the water level.
  • a spray ring which is L-shaped over its circumference and defines a space between said ring and the inner wall of the pipe. said spray ring being coaxially arranged with the inner wall of the pipe.
  • the short leg of the L-shaped spray ring extends outwardly transverse to the axis of the pipe and outside the latter.
  • the pipe is adapted to be lifted and lowered hydraulically or by means of the pneumatic cylinder, or the like.
  • the advantage of the slag sand collecting hopper according to the invention is seen primarily in the almost complete separation of the slag sand-water mixture and also in that the water circuit following said hopper can be held substantially free from slag sand.
  • FlG. I shows the slag sand collecting hopper l which is of a conical shape and is arranged so as to stand on its tip.
  • the device l communicates with a connecting pipe 2 which, in its turn, is connected to the drainage silo 3 which may be of the type set forth in assignees above mentioned copending application.
  • the device 1 furthermore comprises an overflow pipe 4 with shut-off valve 5 and has an outlet 7 which leads to a circulating pump 6 located at a lower level than the device 1.
  • the device 1 has its upper part provided with an overflow 8 which is formed by two thin-walled rings 11, l2 arranged in radially spaced relationship to each other and arranged coaxially with regard to each other.
  • the inner ring 11 is connected to the bottom side of the cover 9, whereas the outer ring 12 is connected to the inner surface of the outer wall l0.
  • the outer ring 12 the upper edge of which is lower than the upper edge of ring 11 determines the water level in the device I.
  • a hydraulic or pneumatic cylinder piston system 13 which is mounted on the cover 9 and is adapted selectively to lift and lower a pipe 14 which is open at the top and at the bottom and which is coaxially arranged with regard to the outer wall of and in housing 10 and is adapted selectively to close the outlet 7.
  • a spray ring 15 the wall 15a of which has an L-shaped cross section which is radially inwardly spaced from the inner wall of the pipe 14.
  • the short leg 16 of the spray ring 15 extends transverse to the axis of the pipe 14 and is located outside the latter while pointing radially outwardly.
  • the water which is still intermixed with relatively fine sand passes through the connecting pipe 2 into the device 1 while the outlet 7 is closed by the pipe 14 which by means of the cylinder piston system 13 on the cover 9 is adapted to be lifted and lowered.
  • the valve 5 is adapted to be opened when the closure 7 is closed so that the water will, by means of the overflow pipe 4, be conveyed to a non-illustrated settling tank.
  • the circulating pump is at this time shut off.
  • the fine slag sand which is washed out from the drainage silo 3 deposits in the sand collecting hopper or device 1.
  • a sand collecting hopper for use in connection with a slag processing apparatus comprising a pump, which includes: a container having conical housing walls and being adapted to be charged with a slag sand water mixture and arranged with its smallest portion pointing downwardly and with an outlet opening in said smallest portion, said outlet being connectable to a pump of a slag processing apparatus, means to maintain the water level in said hopper at a predetermined minimum water surface line, a tubular member open at both ends and arranged in substantially axial alignment with the axis of said outlet opening and having an inner diameter greater than the diameter of said outlet opening, said tubular member being movable from an ele vated position in which its lower edge is spaced from the inner surface of said conical housing wall to a lowered position in which the lower edge of said tubular member substantially sealingly engages the inner surface of said conical housing wall, and means connected to said tubular member for selectively moving the same from its lowered position to its elevated position and vice versa, the length and stroke of said tub
  • a hopper according to claim 1 which includes a spray ring arranged in radially inwardly spaced relationship to and protruding from the lower end of said tubular member while being in substantially axial alignment with and connected to said tubular member for,
  • said spray ring having radially outwardly extending flange means located outside said tubular member for radially outwardly directing water and slag sand passing between the inner wall surface of said tubular member and the outer wall surface of said spray ring.
  • a hopper according to claim 1 in which the means for selectively moving said tubular member from its lowered position to its elevated position includes fluid operable cylinder-piston means.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
US423806A 1973-08-18 1973-12-11 Slag sand collecting hopper for a slag sand water mixture drainage silo Expired - Lifetime US3874737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2341847A DE2341847C2 (de) 1973-08-18 1973-08-18 Einrichtung zur Entwässerung von Schlacken

Publications (1)

Publication Number Publication Date
US3874737A true US3874737A (en) 1975-04-01

Family

ID=5890121

Family Applications (1)

Application Number Title Priority Date Filing Date
US423806A Expired - Lifetime US3874737A (en) 1973-08-18 1973-12-11 Slag sand collecting hopper for a slag sand water mixture drainage silo

Country Status (2)

Country Link
US (1) US3874737A (de)
DE (1) DE2341847C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001051674A1 (de) * 2000-01-13 2001-07-19 Holcim Ltd. Verfahren zum granulieren von flüssigen schlacken
CN106276263A (zh) * 2016-08-05 2017-01-04 上海交通大学 一种固体颗粒水力提升装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2617837C2 (de) * 1976-04-23 1986-01-09 geb. Hilsheimer Ingeborg 6831 Brühl Held Vorrichtung zur Aufbereitung von mineralischen Schwerschlamm enthaltendem Wasser
DE4117479A1 (de) * 1991-05-28 1992-12-03 Eitenmueller Klaus Entleerbares sedimentiergefaess und verfahren zum entleeren eines sedimentiergefaesses
DE4123343A1 (de) * 1991-07-15 1993-01-21 Joerg Kreuzer Entwaesserungsbehaelter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US520210A (en) * 1894-05-22 lister
US1576617A (en) * 1925-05-01 1926-03-16 Prince John Sand dewatering and mixing device
US2078235A (en) * 1935-08-05 1937-04-27 Frank D Chapman Hydraulic apparatus
US2718435A (en) * 1952-07-22 1955-09-20 Hubert W Hudspeth Mud feeder for oil wells

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US520210A (en) * 1894-05-22 lister
US1576617A (en) * 1925-05-01 1926-03-16 Prince John Sand dewatering and mixing device
US2078235A (en) * 1935-08-05 1937-04-27 Frank D Chapman Hydraulic apparatus
US2718435A (en) * 1952-07-22 1955-09-20 Hubert W Hudspeth Mud feeder for oil wells

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001051674A1 (de) * 2000-01-13 2001-07-19 Holcim Ltd. Verfahren zum granulieren von flüssigen schlacken
CN106276263A (zh) * 2016-08-05 2017-01-04 上海交通大学 一种固体颗粒水力提升装置

Also Published As

Publication number Publication date
DE2341847C2 (de) 1975-05-15
DE2341847B1 (de) 1974-09-12

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