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DE481214C - Process for the production of heat and cold protective envelopes using basic carbonic acid magnesia - Google Patents

Process for the production of heat and cold protective envelopes using basic carbonic acid magnesia

Info

Publication number
DE481214C
DE481214C DEL65372D DEL0065372D DE481214C DE 481214 C DE481214 C DE 481214C DE L65372 D DEL65372 D DE L65372D DE L0065372 D DEL0065372 D DE L0065372D DE 481214 C DE481214 C DE 481214C
Authority
DE
Germany
Prior art keywords
magnesia
carbonic acid
heat
production
cold protective
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
DEL65372D
Other languages
German (de)
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.)
LIPSIA CHEM FAB AKT GES
Original Assignee
LIPSIA CHEM FAB AKT GES
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 LIPSIA CHEM FAB AKT GES filed Critical LIPSIA CHEM FAB AKT GES
Priority to DEL65372D priority Critical patent/DE481214C/en
Application granted granted Critical
Publication of DE481214C publication Critical patent/DE481214C/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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/10—Lime cements or magnesium oxide cements
    • C04B28/105—Magnesium oxide or magnesium carbonate cements

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Insulation (AREA)

Description

Verfahren zur Herstellung wärme- und kälteschützender Umhüllungen mittels basisch kohlensaurer lWagnesia Die hohen isolierenden Eigenschaften der leichten basisch kohlensauren Magnesia (Magnesia alba), die bedingt sind durch die außerordentlich geringe Wärmeleitzahl dieses federleichten voluminösen Pulvers, sind bekannt. Man hat von ihnen schon lange zum Zwecke des Wärmeschutzes Gebrauch gemacht, indem man die Magnesia alba in Mischung mit Faserstoffen, insbesondere Asbest, als AufAtrichmasse verwendete oder zu Fonnstücken preßte, welche auf zu schützende Rohre und Kessel gebunden wurden. Neuerdings wurde gefunden, daß man die Magnesia auch ohne Beimengung von den Zusammenhang vermittelnden Faserstoffen und Bindemitteln verwenden kann, wenn man die gegen Wärine- oder Kälteverlust zu schützenden Gegenstände mit einer festen Hülle aus Blech, Preßspan, Pappe o. dgl. umkleidet und den beliebig groß'gewäblten Hohlrauin mit kohlensaurer Magnesia voRstopft. Es hat sich aber gezeigt, daß das Stopfen des überaus lockeren Pulvers mühsam und sehr zeitraubend ist undes außerdem durch die kleinste Undichtigkeit der Umhüllung herausstiebt.Process for the production of heat and cold protective coverings using basic carbonic acid lWagnesia The high insulating properties of the light basic carbonic acid magnesia (Magnesia alba), which are caused by the extremely low coefficient of thermal conductivity of this feather-light, voluminous powder, are known. They have long been used for thermal insulation purposes made by mixing the magnesia alba with fiber, in particular Asbestos, used as a topping compound or pressed into shaped pieces, which are closed protective pipes and boilers were tied. It has recently been found that one the magnesia even without the addition of the fibrous materials that convey the connection and binders can be used if you want to protect against heat or cold loss protective objects with a solid cover made of sheet metal, pressboard, cardboard o. and stuffing the hollow roughness of any size with carbonic acid magnesia. However, it has been shown that the stuffing of the extremely loose powder is tedious and is very time consuming and also because of the smallest leak in the casing rushes out.

Es wurde nun gefunden, daß man diese Übelstände vermeiden kann, wenn man die Magnesia in der Hauptsache nicht in der Form des feinen Pulvers, sondern in Gries-, Graupen- oder Erbsform verwendet, in der sie durch geeignetes Trocknen feuchter oder durch entsprechendes Zerkleinern großstückiger Magnesia alba gewonnen werden kann. Beim Einstopfen von basisch kohlensaurer Magnesia in Gries- oder Kömerform verwandelt sich dieselbe durch Nachdrücken wieder teilweise in Pulverform und ergibt damit eine Isolierung von hohem Wirkungsgrad. Das Einfüllen der Magnesia in dieser Form läßt sich fast ohne Staubentwicklung und außerdem viel leichter und schneller durchführen als mit feingepulverter Magnesia; -infolgedessen bringt die neue Arbeitsweise durch Ersparnis an Material und Arbeitskraft einen erheblichen Fortschritt mit sich. Gegenüber der früheren Art des Isolierens mit Beimengungen von Faserstoffen und Bindemitteln bietet die neue Ausführungsart auch insofern einen technischen Fortschritt, als die bisher gebrauchten Faserstoffe und Bindemittel eine erheblich größere Wärmeleitzahl besitzen als Magnesia und dadurch den Schutzeffekt derselben herabgedrückt haben.It has now been found that these evils can be avoided if the main thing is that magnesia is not in the form of fine powder, but rather used in semolina, barley or pea form, in which they are dried by suitable means Moist or obtained by comminuting large pieces of Magnesia alba can be. When stuffing basic carbonic acid magnesia in semolina or grain form it is partially transformed back into powder form by pressing down and results thus an insulation of high efficiency. Filling the magnesia into this Form can be formed with almost no dust and also much easier and faster perform as with finely powdered magnesia; - as a result, brings the new way of working by saving material and manpower a considerable progress with itself. Compared to the earlier type of insulation with admixtures of fibers and Binders, the new design also offers a technical advance, a considerably higher coefficient of thermal conductivity than the previously used fibers and binders own as magnesia and thereby depressed the protective effect of the same.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung wärine- und kälteschützender Umhüllungen mittels basisch kohlensaurer Magnesia, dadurch gekennzeichnet, daß man die Magnesia in der Hauptsache in Gries-, Graupen- oder Erbsform ohne Mitverwendung von Faserstoffen oder Bindemitteln in geeignete Umhüllungen stopft.PATENT CLAIM: Process for the production of heat and cold protective Coverings by means of basic carbonic acid magnesia, characterized in that one the magnesia mainly in the form of semolina, barley or pea without use stuffs of fibrous materials or binders into suitable casings.
DEL65372D 1926-03-16 1926-03-16 Process for the production of heat and cold protective envelopes using basic carbonic acid magnesia Expired DE481214C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL65372D DE481214C (en) 1926-03-16 1926-03-16 Process for the production of heat and cold protective envelopes using basic carbonic acid magnesia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL65372D DE481214C (en) 1926-03-16 1926-03-16 Process for the production of heat and cold protective envelopes using basic carbonic acid magnesia

Publications (1)

Publication Number Publication Date
DE481214C true DE481214C (en) 1929-08-16

Family

ID=7281322

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL65372D Expired DE481214C (en) 1926-03-16 1926-03-16 Process for the production of heat and cold protective envelopes using basic carbonic acid magnesia

Country Status (1)

Country Link
DE (1) DE481214C (en)

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