US2570572A - Cooling device and a method for transferring molten aluminum sulfate into solid pieces by using the device - Google Patents

Cooling device and a method for transferring molten aluminum sulfate into solid pieces by using the device Download PDF

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Publication number
US2570572A
US2570572A US782630A US78263047A US2570572A US 2570572 A US2570572 A US 2570572A US 782630 A US782630 A US 782630A US 78263047 A US78263047 A US 78263047A US 2570572 A US2570572 A US 2570572A
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US
United States
Prior art keywords
cooling
box
mold
molten aluminum
solid pieces
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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
US782630A
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English (en)
Inventor
Lennstrom Karl Valdemar
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.)
Reymersholms Gamla Ind AB
REYMERSHOLMS GAMLA INDUSTRI AB
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Reymersholms Gamla Ind AB
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/06—Solidifying liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/68—Aluminium compounds containing sulfur
    • C01F7/74—Sulfates
    • C01F7/746—After-treatment, e.g. dehydration or stabilisation

Definitions

  • the present invention relates to a new construction of a cool-ing device and a method for transforming molten aluminum sulphate into solid slabs or other pieces of handy size.
  • the cooling device comprises an elongated trough with double walls and provided with inlet and outlet conduits for a cooling medium to the space between said walls,
  • Each end wall of the cooling trough'or box is preferably provided with a trunnion by means of whichthe box is mounted in suitable bearings so that it may be turned upside down when the content is to be discharged.
  • These trunnions are arranged in such a way that their common axis is situated abov the centre of gravity of the emptied box and below the centre of gravity of the charged box.
  • the invention also relates to a method for solidifying molten aluminum sulphate into pieces by using the device-described above.
  • This method comprises the steps of charging the cooling box with aluminum sulphate molten in its crystal water and possibly remaining mother lye ata temperature of about 105- 115 C., cooling the charge or melt by means of circulating cooling medium until the melt is solidified as a coherent casting, and finally tilting the cooling box so that the solidified casting is tumbled out and-upon impact againsta suitablebed is broken up into pieces along the breaking sections caused by the bottom ridges of the cooling box.
  • - Fig. 1 is a longitudinal section of a cooling box according to the invention.
  • Fig. 2 is a section on the line IIII of Fig. 1.
  • Fig. 3 is a side view showing the cooling box mounted in a traverser.
  • Fig. 4 shows a plurality of cooling boxes mounted in traversers in connection witha storage room for making possible a full use of th storage room.
  • Fig. '5 shows an arrangement for stirring the solidifying material in the cooling box.
  • I refers to the cooling box, which is provided with double walls nd inlets and outlets 2 and 3 respectively for cooling fluid, preferably water.
  • the inner bottom of the cooling box is provided with ridges 4 for producing the breaking sections in the casting solidified in the box.
  • the inner side walls of the boxas well as the ridges A are made with draft to facilitate the loosening of the solidified product from the cooling box.
  • the inlet and outlet conduits for the cooling fluid are preferably arranged in the trunnions by means of which the cooling box is suspended, for instance in a traverser. and on which the box is tiltabl'e. At least the outlet conduit for the cooling fluid is to be bent upwardly and terminate in an overflow outlet with the aim of securing the filling of the cooling jacket of the box with water and to avoid the risk of said chamber being emptied by siphon action.
  • a suitable embodiment of the inlet and outlet conduits for cooling water is illustrated in Fig. 3.
  • Cooling water is supplied through a conduit 6 which possibly may be connected to a plurality of cooling boxes and after cooling led through an upwardly bent con duit l discharging the water via an overflow 8 into adischarge channel 9 which may be arranged along thetraverser path.
  • cooling boxes When the cooling boxes are suspended as shown in Figs. 3 and 4 they are preferably provided with a locking device retaining them in their position during the charging and when charged with the material tobe treated.
  • the lock When the boxes are to be emptied the lock is released and the boxes are automatically tilted to a position with their openings directed downwardly due to the axis of the trunnions being situated on the bottom side of the centre of gravity of the charged box.
  • the cooling box may preferably be provided with a stirring device.
  • a simple device for this purpose is shown in Figs. 1 and and comprises cylindrical or spherical bodies 12 suspended by chains l3 which by means of an eccentric disk M or the like are given a vertically reciprocating movement. As the mass in the cooling box solidifies the stirring members will sink to a successively decreasing depth in the mass.
  • FIG. 4 shows an arrangement comprising a plurality of cooling boxes in connection with a storage room.
  • a series of evaporating pans may be arranged each being provided with a bottom discharge channel il, projecting into the traverser pathat a level suitable for charging the cooling boxes suspended in the traverser.
  • the cooling boxes are easily carried to the evaporator pan to be emptied by means of the traverser.
  • two traversers may be provided, one at each end of the storage room as illustrated in the figure. It is of course suitable to provide each traverser with a number of cooling boxes appropriate for emptying one evaporator pan completely.
  • Casting apparatus for aluminum sulphate comprising a relatively long narrow mold, a jacket spaced from and surrounding the bottom and sides of said mold providing a space for receiving a cooling medium, a trunnion secured to each end of said mold for rotatably mounting the same, means for conducting said cooling medium to and from said'space, a plurality of transverse hollow partitions extending upwardly from the bottom of said mold and terminating below the top thereof, the interior of said partitions communicating with said space, baflies disposed in said space below said partitions to direct the flow of cooling medium through said space and the interior of said partitions whereby substantially the entire surface of said mold will be cooled, said trunnions being secured to said mold at such a position that the axis thereof will be above the center of gravity of said mold when empty and below the center of gravity of said mold when full whereby upon filling of said mold the same will automatically invert to discharge the contents thereof and upon discharge of the contents will automatically return to upright position.
  • the method of transforming melts of hydrated aluminum sulphates, which are molten in their hydrate water, into a solid block of predetermined size which comprises providing a relatively long, narrow mold, pouring a mass of such material at a temperature of the order of -105- 115 C. into said mold, chilling the entire surface of said mold in contact with said mass to cause solidification of said mass, whereby to form an aqueous film between the interior surface of the mold and the solidifying mass due to water liberated from the mass upon solidification thereof, said aqueous film acting to minimize the tend- F ency of the mass to stick to the surface of the mold, and inverting said mold to discharge said mass therefrom by gravity.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US782630A 1946-10-30 1947-10-28 Cooling device and a method for transferring molten aluminum sulfate into solid pieces by using the device Expired - Lifetime US2570572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE650825X 1946-10-30

Publications (1)

Publication Number Publication Date
US2570572A true US2570572A (en) 1951-10-09

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ID=20314051

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US782630A Expired - Lifetime US2570572A (en) 1946-10-30 1947-10-28 Cooling device and a method for transferring molten aluminum sulfate into solid pieces by using the device

Country Status (4)

Country Link
US (1) US2570572A (me)
BE (1) BE477028A (me)
FR (1) FR954757A (me)
GB (1) GB650825A (me)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011878A (en) * 1958-11-26 1961-12-05 Monsanto Chemicals Process of solidifying a concentrated solution of aluminum sulfate containing solid aluminum sulfate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114431C (me) *
GB117144A (en) * 1917-07-12 1918-07-11 Middlesbro Slag Company Ltd Improvements in Casting machines for Casting Slag or other Massive Bricks or Blocks.
US1316471A (en) * 1919-09-16 Dickie
US1742391A (en) * 1927-06-11 1930-01-07 Irven E Hanson Apparatus for solidifying sulphur
US1803886A (en) * 1929-02-20 1931-05-05 Paul W Ausman Slag cooling apparatus
US2204498A (en) * 1938-07-21 1940-06-11 United American Metals Corp Casting apparatus
US2357780A (en) * 1942-04-22 1944-09-05 Revere Copper & Brass Inc Mold and molding apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114431C (me) *
US1316471A (en) * 1919-09-16 Dickie
GB117144A (en) * 1917-07-12 1918-07-11 Middlesbro Slag Company Ltd Improvements in Casting machines for Casting Slag or other Massive Bricks or Blocks.
US1742391A (en) * 1927-06-11 1930-01-07 Irven E Hanson Apparatus for solidifying sulphur
US1803886A (en) * 1929-02-20 1931-05-05 Paul W Ausman Slag cooling apparatus
US2204498A (en) * 1938-07-21 1940-06-11 United American Metals Corp Casting apparatus
US2357780A (en) * 1942-04-22 1944-09-05 Revere Copper & Brass Inc Mold and molding apparatus

Also Published As

Publication number Publication date
BE477028A (me)
GB650825A (en) 1951-03-07
FR954757A (me) 1950-01-05

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