GB954615A - Perlite aggregate and process for making same - Google Patents

Perlite aggregate and process for making same

Info

Publication number
GB954615A
GB954615A GB3182562A GB3182562A GB954615A GB 954615 A GB954615 A GB 954615A GB 3182562 A GB3182562 A GB 3182562A GB 3182562 A GB3182562 A GB 3182562A GB 954615 A GB954615 A GB 954615A
Authority
GB
United Kingdom
Prior art keywords
ore
kiln
temperature
perlite
expanding
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
GB3182562A
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.)
Johns Manville Corp
Johns Manville
Original Assignee
Johns Manville Corp
Johns Manville
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 Johns Manville Corp, Johns Manville filed Critical Johns Manville Corp
Publication of GB954615A publication Critical patent/GB954615A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • C04B20/06—Expanding clay, perlite, vermiculite or like granular materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

<PICT:0954615/C1/1> A porous glass is made from perlite ore by gradually increasing the temperature of the ore to the expansion temperature, expanding the ore and thereafter gradually decreasing the temperature to ambient, the treatment being affected under quiescent air conditions, as by heating the perlite ore indirectly. An electric furnace is used and may be either horizontal or vertical. The ore is fed by a vibratory feeder 2 to a hopper 4 leading to an electrically heated kiln 6 containing a stainless steel tube 8 vibrated by mechanism 9 to feed the ore through the kiln 6 to be received in a container 12. A thermocouple 10 is positioned in the hottest part of the kiln 6 for controlling the three zones of heat in the tube 8, i.e. preheat, expanding and annealing temperatures.
GB3182562A 1961-10-02 1962-08-20 Perlite aggregate and process for making same Expired GB954615A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14241361A 1961-10-02 1961-10-02

Publications (1)

Publication Number Publication Date
GB954615A true GB954615A (en) 1964-04-08

Family

ID=22499752

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3182562A Expired GB954615A (en) 1961-10-02 1962-08-20 Perlite aggregate and process for making same

Country Status (1)

Country Link
GB (1) GB954615A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290749A (en) 1978-10-23 1981-09-22 Johns-Manville Corporation Perlite expansion process and apparatus therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290749A (en) 1978-10-23 1981-09-22 Johns-Manville Corporation Perlite expansion process and apparatus therefor

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