US2870819A - Apparatus and method for forming a sheet of integrated mica - Google Patents

Apparatus and method for forming a sheet of integrated mica Download PDF

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Publication number
US2870819A
US2870819A US270242A US27024252A US2870819A US 2870819 A US2870819 A US 2870819A US 270242 A US270242 A US 270242A US 27024252 A US27024252 A US 27024252A US 2870819 A US2870819 A US 2870819A
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United States
Prior art keywords
flakes
liquid
web
tank
mica
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Expired - Lifetime
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US270242A
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English (en)
Inventor
Moses Heyman
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Individual
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Individual
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Priority to US270242A priority Critical patent/US2870819A/en
Priority to BE524905A priority patent/BE524905A/fr
Priority to LU32552D priority patent/LU32552A1/xx
Priority to FR1098956D priority patent/FR1098956A/fr
Priority to NL183920A priority patent/NL99821C/nl
Application granted granted Critical
Publication of US2870819A publication Critical patent/US2870819A/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/44—Flakes, e.g. mica, vermiculite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist

Definitions

  • This invention relates to an apparatus and method for forming a sheet of integrated mica from thinly split flakes and deals more particularly with an apparatus embodying means for utilizing flakes that may otherwise be wasted and which render diflicult proper cleansing of the liquid medium in which the flakes are borne so that said medium may be re-circulated.
  • Another object of the invention is to recover the otherwise wasted thinner flakes, as above mentioned, so that the relatively few flakes that cannot be recovered can be filtered out efliciently, thereby insuring substantial freedom from mica flakes of the re-circulating liquid and proper operation of the flake preparing and producing means.
  • a further object of the invention is to provide novel prise the interior of the sheet.
  • a still further object of the invention is to provide [novel and improved flake-recovering means whereby My invention also comprises novel details of construe tion and novel combinations and arrangements of parts which will more fully appear in the course of the following description, the same having basis on the apparatus shown in the accompanying drawing which is exemplary of apparatus according to the invention.
  • Fig. 1 is a systematic view, partly in section, of apparatus according to' the present invention.
  • Fig. 2 is an enlarged cross-sectional view as taken on line 2--2 of Fig. 1.
  • Fig. 3 is a greatly enlarged fragmentary sectional view of an integrated mica sheet as produced by said apparatus.
  • a chute 5 which discharges liquid-borne mica flakes and a pipe 6 which returns the liquiddischarged by said chute to the source from which the flow in said chute came. It. is understood that apparatus, immaterial to the present. invention, is inter-connected between said chute and pipeto disintegrate pieces of mica into fine flakes or splittings and to provide a flow of liquid-borne flakes to chute 5.
  • the present apparatus comprises, generally, sheetforming means 7, means 8 conducting liquid from said means 7, means 9 to recover mica flakes in the liquid flowing in means 8 and returning the same to the sheetforming means, a settling tank 10 receiving the discharge of liquid from means 9, means 11 interposed between tank 10 and pipe 6 to strain or filter the liquid from tank 10, and means 12 to periodically flush or cleanse the filter means 11.
  • the sheet-forming means 7 comprises, generally, a tank 13 that is preferably provided with an upwardly sloping bottom 14, a relatively narrow transverse static head settling chamber 15 disposed intermediate the ends of tank 13 and defined between transverse walls 16, the
  • the conveyor means moves in the direction of arrow20 and said means comprises a support belt or chain 21 preferably formed of articulated links or otherwise formed to be non-stretchable, and a relatively thin woven nylon web 22 for which belt 21 serves as a support.
  • the conveyor means 19 thus provided moves through the tank 13 in an upwardly sloping direction with web 22 uppermost. Suitable pulleys 23 may be provided to guide conveyor means 19 as desired.
  • Means 8 comprises an overflow trough 27 positioned in tank 13 to maintain a constant level of liquid in said tank, saidtrough discharging, under pressure of a suction pump 28, into a pipe 29. It will be evident that such liquid contains mica flakes that are too fine to settle rapidly and, therefore, are drawn off with the surface liquid from tank '13. Means 8 also includes vacuum means 30 disposed below web 22 where the same moves out of the liquid in tank 13 and provided to preventwashby a suction pump 31 and is 'efiectivethrough.tlie'inter sticesof the woven web to firmly hold the deposited flakes on the web as thelat terbreaks through thesur face-of the liquid.
  • pump 31 draws liquid andiflakes suspended therein out of the ta'nkthrou'gh a-pipe 32 which joins pipe 29 to form a pipe 33 that terminates in a perforatedheader34. It will be clear that the flow from the peiforations 35. of said header comprises liquid and Tflakes' an duthat said flakes, being removed with the. topliquid, are the finer and slower settling flakes.
  • the flakes deposited on web 22 become an integrated sheet and said sheet is removed from the web in amanner and by means not pertinent to thepresent invention. In any case, the web returns to the deeper part of tank 13 to again receive deposits of mica flakes as above set forth.
  • the mica flake-recovering means 9 comprises, generally, a woven belt or web 36 similar to web 22 and disposed toreceive the discharge of header 34, a set of concavely' formed rollers 37 supporting an upwardly sloping run 38 of web 36- so as to impart a trough-like transverse sectional form to said web run, a tank 39 to receive the flow of liquid passing throughthe interstices of web 36, and a set of pulleys'40 over which said web is trained so that the same has a substantially vertical run 41 terrninatir g above chamber 17.
  • Web run 38 is disposed at an upward slope so as to drain back into tank 37 therebeneath, the web being driven by means 4 2 at a desired speed to allow such drainback without spillage over the end of said tank.
  • theconcavity of the web run,-as fo rmediby rollers 37 prevents side spillage. of "liquid which, therefore, must drain-through the web and, in theprocess, deposit rnica-flakes 43 on said web.
  • flakes 43 are carried by web run 41 toward chamber 17. These flakes are Washedfrorn the web into chamber 17 by a nozzle 45 which receives its flushing liquid from'the' discharge of -a pump 46 having an inlet'47 that draws water or liquid from tank 13.
  • some'94% of 'theflakes discharged. from chute become embodied in the integrated sheet formed by-the present apparatus.
  • The-remaining 4% are so extremely small and fine-as to passthroughthe interstices of web 36'into tank 39.
  • Settling tank 10 by means- 0f a pipe 48,'receives the flow from tank 39.
  • By'mea'ns'of batfle's or other known means within tank 10 much of the fine flakes suspended in the liquid are settled out andgfromtime to time, these 'flakes areemptiedinto' a drain byopening normally-closedvalve 49.
  • the :upper portion of the liquid 'in tank is drawnoff through a pipe 50 to the filter means '11 by means-of a suction pump '51'connected in said pipe.
  • Filtermans 11 comprises a filter orstrain'er'SZ that receives liquid flow from pipe 50, filters'out'any residual 'fine' flakes from said flow, and discharges the resultant flake-free liquid into pipe 6.
  • pipe 50 is providedwith a check'valve the filter is provided with anoi'inally operi valve f55 and a similar, but normally-closed valve .56, is provided 'at "It will be clear that the flow intoth filter normally 'r'ea'ch'es pipe 6 only by passing through filter unit 57 that intercepts the relatively small amount of flakes that remain in the flow. Since much of the 4% of waste flakes has been settled out in tank 10, filter 52 is able to function for a relatively long period before accumulations of flakes on filter unit 57 clog the same and impairs its liquidpassing efficiency.
  • means 12 is operated before a clogged condition ofuthe .filteroccursto insure continuous flow of liquid in pipe 6 as supplied from tank13.
  • means 12 .comprises air cylinders 58 and 59 for operating the respective valves and 56, an air line 60, controlled as by 'a solenoid-operated valve 61, to provide compressed air for operating said air cylinders, a pipe 62 from a source of compressed air, and avfilter63 to cleanse said. air of. contained. oilondirt. ,Line is connected tolfilter outlet 54. and a check valve 64 is provided to check flowbackinto line 60.
  • valve 61 iscontrolled bya suitable timing device 65 which periodically opens said valve to:adrnit. compressed air to air cylinders 58. and 59.
  • timing device f65 Under control of timing device f65,v compressed :air actuates cylinder 58 to close.normallyfopen-valve.55.and cylinder 59 to. open normally-closed valve 56. Therefore, as said compressed air flows past check valve 64, the samereverse.flushes filterunit 57 and the accumulation of flakes on the surface of said unitis blown out of the .filter through open .valve 56. .Three tolfive seconds ofsuch reverse. flush. is ordinarilyvsufli'cient. to clear .unit 57 vof flakes. Since timing device 65 provides an automatic and periodic flushing operation, the flow to pipe 6 is maintained and .the liquid flo-wingsin said, pipe is substantially clear of. all'flakes and quite suitable for re-circulation and re-use.
  • grated mica comprising a tank...provided with. a static head settling chamber intermediateits ends to provide said tank with settling. chambers. one on each .side of .the static head chamber, said chambers. being connected at their bottoms, a web moving. throughthe bottomsof said three chambers and receptive of mica flakes settling-downwardly in said chambers, aninlet foraflowrofliquidborne micaflakes to sa-idstatic head chamberganoutlet for excess liquid insaiditank and.in.the uppeipportionso'f the tankto maintain. a constant level of..liquid inv the tank, means to elevate the. liquid passing. throughsaid.
  • partitions dividing said tank into three settling chambers connected at their bottoms, one of said chambers being intermediate the other two and receptive, from the top, of a flow of liquid-borne mica flakes, a web moving along the bottoms of said chambers and receptive of flakes settling downwardly in the liquid in said chamber, an overflow for the top of the liquid in said chambers, means to elevate said overflow liquid above the tank, and means to separate mica flakes from said overflow liquid and return said separated flakes to one of said other two chambers.
  • integrated mica sheet-forming means having an overflow of liquid
  • means to receive said overflow liquid and intercept mica flakes suspended therein said means comprising a liquid-passing conveyor web disposed to have a substantially horizontal run thereof in the path of said overflow liquid to pass said liquid and collect the mica flakes in said liquid and to have a substantially vertical run thereof directed toward the sheet-forming means, and means to remove the flakes from said latter run and return the same to the sheet-forming means.
  • a method for forming an integrated sheet of mica flakes on a continuously moving surface that consists in directing a continuous flow of liquid-borne flakes above and onto said surface and to immerse the same so that the flakes settle downwardly onto said continuously moving surface, maintaining the level of the liquid above said surface substantially constant by drawing ofi the liquid from the top together with flakes in suspension at said top while the incoming flow continues, separating the flakes from the liquid thus drawn off to collect the flakes, and then returning said collected flakes to the liquid above the moving surface forward of the mentioned flow so that said latter flakes settle downwardly onto said moving surface to cover the same before the flakes from the flow reach said surface.
  • a method according to claim 6 the steps of conveying the collected flakes toward the liquid above the moving surface, and utilizing said liquid to wash said collected flakes thereinto.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)
US270242A 1952-02-06 1952-02-06 Apparatus and method for forming a sheet of integrated mica Expired - Lifetime US2870819A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US270242A US2870819A (en) 1952-02-06 1952-02-06 Apparatus and method for forming a sheet of integrated mica
BE524905A BE524905A (fr) 1952-02-06 1953-12-08 Appareil et procédé pour la production d’une feuille de mica « intégré »
LU32552D LU32552A1 (fr) 1952-02-06 1953-12-09 Appareil et procédé pour la production d’une feuille de mica « intégré »
FR1098956D FR1098956A (fr) 1952-02-06 1953-12-14 Appareil et procédé pour la production d’une feuille de mica « intégré »
NL183920A NL99821C (nl) 1952-02-06 1953-12-24 Werkwijze en inrichting voor de vervaardiging van een baan geintegreerd mica

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US270242A US2870819A (en) 1952-02-06 1952-02-06 Apparatus and method for forming a sheet of integrated mica

Publications (1)

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US2870819A true US2870819A (en) 1959-01-27

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US270242A Expired - Lifetime US2870819A (en) 1952-02-06 1952-02-06 Apparatus and method for forming a sheet of integrated mica

Country Status (5)

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US (1) US2870819A (nl)
BE (1) BE524905A (nl)
FR (1) FR1098956A (nl)
LU (1) LU32552A1 (nl)
NL (1) NL99821C (nl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168434A (en) * 1962-03-01 1965-02-02 Acim Paper Corp Paper-backed mica
US20130269898A1 (en) * 2010-12-17 2013-10-17 Oji Holdings Corporation Device for producing fibrous sheet

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US898212A (en) * 1908-04-20 1908-09-08 Halvor Gaara Method of and apparatus for straining the waste water in paper-mills, wood-pulp factories, and the like.
CH44376A (de) * 1908-05-09 1909-08-02 Halvor Gaara Vorrichtung zur Gewinnung des im Abwasser von Faserbrei verarbeitenden Maschinen enthaltenen Faserstoffes
US1500208A (en) * 1920-04-06 1924-07-08 C F Dahlberg Process of and apparatus for making fiber boards
US1599376A (en) * 1926-09-07 of akron
US1672249A (en) * 1927-06-27 1928-06-05 George H Ellis Apparatus for making composition boards or sheets
US1754370A (en) * 1927-10-29 1930-04-15 Bemis Ind Inc Apparatus for producing fiber board
US1807206A (en) * 1928-06-18 1931-05-26 Continental Diamond Fibre Co Mica laying apparatus
US1913877A (en) * 1928-06-22 1933-06-13 Continental Diamond Fibre Co Mica sorting apparatus
US1950089A (en) * 1927-10-26 1934-03-06 Morse Sterne Method of forming solid bodies with predetermined arrangement of constituent particles
US2077720A (en) * 1935-05-28 1937-04-20 Johns Manville Felted product and method of making the same
US2488700A (en) * 1945-05-17 1949-11-22 Riegel Paper Corp Apparatus for paper manufacture
US2549880A (en) * 1943-10-20 1951-04-24 Prosilis Methods for treating mica and composition
US2614055A (en) * 1947-05-12 1952-10-14 Samica Corp Method of treating mica
US2624079A (en) * 1949-08-16 1953-01-06 Wood Conversion Co Manufacture of air-laid felts

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1599376A (en) * 1926-09-07 of akron
US898212A (en) * 1908-04-20 1908-09-08 Halvor Gaara Method of and apparatus for straining the waste water in paper-mills, wood-pulp factories, and the like.
CH44376A (de) * 1908-05-09 1909-08-02 Halvor Gaara Vorrichtung zur Gewinnung des im Abwasser von Faserbrei verarbeitenden Maschinen enthaltenen Faserstoffes
US1500208A (en) * 1920-04-06 1924-07-08 C F Dahlberg Process of and apparatus for making fiber boards
US1672249A (en) * 1927-06-27 1928-06-05 George H Ellis Apparatus for making composition boards or sheets
US1950089A (en) * 1927-10-26 1934-03-06 Morse Sterne Method of forming solid bodies with predetermined arrangement of constituent particles
US1754370A (en) * 1927-10-29 1930-04-15 Bemis Ind Inc Apparatus for producing fiber board
US1807206A (en) * 1928-06-18 1931-05-26 Continental Diamond Fibre Co Mica laying apparatus
US1913877A (en) * 1928-06-22 1933-06-13 Continental Diamond Fibre Co Mica sorting apparatus
US2077720A (en) * 1935-05-28 1937-04-20 Johns Manville Felted product and method of making the same
US2549880A (en) * 1943-10-20 1951-04-24 Prosilis Methods for treating mica and composition
US2488700A (en) * 1945-05-17 1949-11-22 Riegel Paper Corp Apparatus for paper manufacture
US2614055A (en) * 1947-05-12 1952-10-14 Samica Corp Method of treating mica
US2624079A (en) * 1949-08-16 1953-01-06 Wood Conversion Co Manufacture of air-laid felts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168434A (en) * 1962-03-01 1965-02-02 Acim Paper Corp Paper-backed mica
US20130269898A1 (en) * 2010-12-17 2013-10-17 Oji Holdings Corporation Device for producing fibrous sheet
US8845862B2 (en) * 2010-12-17 2014-09-30 Oji Holdings Corporation Device for producing fibrous sheet

Also Published As

Publication number Publication date
NL99821C (nl) 1961-12-15
FR1098956A (fr) 1955-08-29
LU32552A1 (fr) 1953-12-09
BE524905A (fr) 1954-06-08

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