US2234644A - Method of and apparatus for briquetting fine-grained, pulverulent, or dust-fine material - Google Patents

Method of and apparatus for briquetting fine-grained, pulverulent, or dust-fine material Download PDF

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Publication number
US2234644A
US2234644A US233546A US23354638A US2234644A US 2234644 A US2234644 A US 2234644A US 233546 A US233546 A US 233546A US 23354638 A US23354638 A US 23354638A US 2234644 A US2234644 A US 2234644A
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Prior art keywords
briquetting
worm
fine
casing
pulverulent
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Expired - Lifetime
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US233546A
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English (en)
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Herglotz Franz
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/08—Methods of shaping, e.g. pelletizing or briquetting without the aid of extraneous binders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses

Definitions

  • This invention relates to a method of and apparatus for briquetting fine-grained, pulverulent or dust-fine material.
  • the compacting of the material to be moulded is effected, by passing said material, before moulding, through a worm conveyor or feeding screw travelling at high speed and damming the same by all a resistance, for the purpose of maintaining the compression of the material produced by the high speed worm conveyor which would otherwise be wasted if the material were allowed to pass unobstructed out of the worm.
  • the damming of the material to be moulded is very conveniently regulated by applying theretd an adjustable counter-pressure.
  • the degree of compacting of the material to be moulded can be regulated both by varying the speed of rotation of the worm and by adjusting the counter-pressure, or by both measures simultaneously. Practically all variations in pressure in the material to be moulded are equalised by the adjustable counter-pressure, thereby ensuring a completely uniform supply to the briquetting press.
  • the compacted material may pass either directly or indirectly to the actual moulding.
  • the distance between the worm and the briquetting press, i. e. between the delivery end of the worm and the press mould, is dependent, per se, upon constructional factors and is not limited by the invention.
  • the casing of the worm may be made relatively long or the damming of the material to bemoulded may be (ill. m)
  • the invention may be carried out by disposing the high speed worm in, and advantageously at the end of, thepath along which the material to g be briquetted travels to the press, thus compacting said material While feeding it to the press.
  • the normal conveying device for the material need generally be in the form of a rapidly rotating worm, while feeding screws working at the usual speed, i. e. about 50 to 120 R. P. ML, or similarly acting conveyors can be used in the major portion of said conveying device.
  • the speed of rotation of the high speed worm may be selected in accordance with the nature ofthe material and the degree of compacting intended. It has been found that in order to achieve a degree of compacting suitable for the'purposes of the present invention, the speed of rotation of the Worm should preferably vary inversely with the degree of fineness of the material to be moulded. As a rule speeds lying between 300 and 2,500 R. P. M. preferably from 700 to 1500 R. P. M... are used.
  • the threads of the high-speed worm can be partly or wholly interrupted or can be partly or wholly replaced .by helically disposed strips, pins, or similar projections. The density of the material is thereby rendered uniform. It is advantageous to use worms of small structural length and to mount such worm only at the end remote from the press.
  • a particularly advantageous method of carrying out the invention comprises continually supplying to the high-speed worm more material than the briquetting press will take, continually withdrawing between the press and said worm the excess supplied to the latter and regulating the counter-pressure when withdrawing -the excess, i. e. providing the counter-pressure regulator in the member through which the excess is withdrawn.
  • Fig. 1 shows a compacting device and the briquettlng press, partly in section and partly in plan;
  • FIGS. 2 and 3 illustrate schematically two fur-' ther embodiments
  • Fig. 1 illustrates the charging of a roller press I by means of a high-speed worm 2, which takes the material to be briquetted from a supply conduit 3 and conveys the same into the tree portion of the work casing 4, from which the compacted material passes by way of a partly closed filling member 5 between the rollers of the press. If desired, the worm may also occupy the entire length of the worm casing.
  • the casing has a branch pipe connection 6 which is closed by a valve disc 8 loaded by an adjustable spring I.
  • valve 8 opens and allows excess material to be passed out into the chamber 9 from whence it can be withdrawn through a pipe ill, to be conveniently passed back to the supply pipe 3.
  • the valve 8 may be loaded by a weight, or by pneumatic or hydraulic pressure, or by electromagnetic or similar means, instead of by spring pressure.
  • the worm casing 4 has a branch cylinder ll in which latter a piston I2, loaded by a spring 13, is adapted to move up and down under the pressure.
  • a piston I2 loaded by a spring 13
  • the piston I2 is raised under the load or the spring it until this load is in equilibrium with the pressure in the part 4. In this way variations in pressure occurring in the material to be-briquetted areautomatically equalised by the loaded piston.- The.
  • piston may also be loaded in any other suitable manner, as described with reference to the valve 8 shown in Fig. 1.
  • the bucket wheel I4 shown in Fig. 3 enables any excess supplied to the worm to be constantly withdrawn while maintaining the damming pressure.
  • the hereindescribed method and apparatus have been found particularly suitable for the production of compact and solid briquettes from coal comminuted to dust fineness.
  • a worm having a speed of 1000 R, P. M. to increase the weight per unit volume of pit-coal, dried to a moisture content of 1% and comminuted to a maximum grain size of 0.2 mm., from 0.4 to 0.7 gram, per cubic centimetre, and thereafter to compress said coal, without the addition of binders, into compact and solid briquettes, in a ring roller moulding press.
  • An apparatus ior briquetting fine-grained pulverulent material comprising a casing having an inlet and outlet, 3, high speed worm rotating in said casing, a counter-pressure regulator beyond the delivery end of said worm, and a briquetting press located at the outlet of said casing.
  • An apparatus for briquetting fine-grained pulverulent material comprising a casing having an inlet and outlet, a high speed worm rotating in said casing, a loaded valve serving as counter-pressure regulator beyond the delivery end of said worm and a briquetting press located at the outlet of said casing.
  • a method of briquetting fine-grained pulverulent material the steps which comprise rapidly agitating whilst simultaneously conveying said pulverulent material to a briquetting operation, adjusting the degree of agitation and the rate of conveyance of said material, damming said material on its way to the briquetting operation by a resistance in order to increase the bulk density thereof and thereupon briquetting said material.
  • An apparatus for briquetting fine-grained pulverulent material comprising a casing having an inlet and outlet, a high speed worm rotating in said casing. a counter-pressure regulator associated with said casing and a briquetting press located at the outlet of said casing.
  • An apparatus for briquetting fine-grained pulverulent material comprising a casing having an inlet and outlet, a high speed worm rotatin in said casing, a loaded valve serving as counter-pressure regulator associated with said casing and a briquetting press located at the outlet of said casing.
  • An apparatus for briquetting fine-grained pulverulent material comprising a casing having an inlet and outlet, ahigh speed worm rotating in said casing, a chamber opening from said casing beyond the delivery end of said worm, an outlet in said chamber, a counter-pressure regulator controlling the pressure of said material in said chamber, and a briquetting press located at the outlet of said casing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Glanulating (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
US233546A 1938-08-06 1938-10-06 Method of and apparatus for briquetting fine-grained, pulverulent, or dust-fine material Expired - Lifetime US2234644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE508343X 1938-08-06

Publications (1)

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US2234644A true US2234644A (en) 1941-03-11

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US (1) US2234644A (en))
BE (1) BE435843A (en))
GB (1) GB508343A (en))

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675304A (en) * 1950-08-04 1954-04-13 Komarek Greaves And Company Briquetting
DE3246251A1 (de) * 1981-12-17 1983-09-29 Gebr.Hofmann Maschinenfabrik und Eisengießerei, 8701 Eibelstadt Brikettierpresse
US4904432A (en) * 1988-02-05 1990-02-27 Agrifibre Developments Limited Manufacture of structural members, in particular furniture components
US6589040B1 (en) * 1998-08-03 2003-07-08 Solvay Polyolefins Europe-Belgium (Société Anonyme) Cutting device for purging an extruder
CN101015963B (zh) * 2007-02-16 2011-08-17 苏长春 粉末压模机的恒量送料机构
CN109177294A (zh) * 2018-08-27 2019-01-11 朱力 一种生物质棒状燃料成型装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5260804A (en) * 1975-11-14 1977-05-19 Sumikin Coke Co Ltd Preparation of coal briquette

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675304A (en) * 1950-08-04 1954-04-13 Komarek Greaves And Company Briquetting
DE3246251A1 (de) * 1981-12-17 1983-09-29 Gebr.Hofmann Maschinenfabrik und Eisengießerei, 8701 Eibelstadt Brikettierpresse
US4904432A (en) * 1988-02-05 1990-02-27 Agrifibre Developments Limited Manufacture of structural members, in particular furniture components
US6589040B1 (en) * 1998-08-03 2003-07-08 Solvay Polyolefins Europe-Belgium (Société Anonyme) Cutting device for purging an extruder
CN101015963B (zh) * 2007-02-16 2011-08-17 苏长春 粉末压模机的恒量送料机构
CN109177294A (zh) * 2018-08-27 2019-01-11 朱力 一种生物质棒状燃料成型装置

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Publication number Publication date
BE435843A (en))
GB508343A (en) 1939-06-29

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