Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GEBLÄHTES GRANULAT AUS MINERALISCHEM MATERIAL
The invention relates to a method for producing an expanded granular material from sand grain-like mineral material which comprises a bound blowing agent, for example for producing an expanded granular material from perlite sand, wherein the sand grain-like mineral material is introduced into a feed opening at one end of a furnace shaft, conveyed along a thermal treatment section in a conveying direction, preferably by force of gravity, heated to a critical temperature while being conveyed through the thermal treatment section, starting at which temperature the sand grain-like mineral material plasticizes and begins to expand as a result of the blowing agent, and the expanded granular material is discharged at another end of the furnace shaft. In order to render the expanded granular widely usable, it is provided according to the invention that the sand grain-like mineral material is heated to a second temperature above the critical temperature after being heated to the critical temperature, which second temperature lies below a third temperature, starting at which third temperature the surface of the expanded granular material bursts, and wherein the second temperature is chosen depending on a desired density of the expanded granular material, so that a portion of the blowing agent remains in the granular material in bound form.
GEBLÄHTES GRANULAT AUS MINERALISCHEM MATERIAL
The invention relates to a method for producing an expanded granular material from sand grain-like mineral material which comprises a bound blowing agent, for example for producing an expanded granular material from perlite sand, wherein the sand grain-like mineral material is introduced into a feed opening at one end of a furnace shaft, conveyed along a thermal treatment section in a conveying direction, preferably by force of gravity, heated to a critical temperature while being conveyed through the thermal treatment section, starting at which temperature the sand grain-like mineral material plasticizes and begins to expand as a result of the blowing agent, and the expanded granular material is discharged at another end of the furnace shaft. In order to render the expanded granular widely usable, it is provided according to the invention that the sand grain-like mineral material is heated to a second temperature above the critical temperature after being heated to the critical temperature, which second temperature lies below a third temperature, starting at which third temperature the surface of the expanded granular material bursts, and wherein the second temperature is chosen depending on a desired density of the expanded granular material, so that a portion of the blowing agent remains in the granular material in bound form.
GEBLÄHTES GRANULAT AUS MINERALISCHEM MATERIAL
EXPANDED GRANULAR MATERIAL CONSISTING OF MINERAL MATERIAL
MATÉRIAU GRANULAIRE EXPANSÉ CONSTITUÉ D'UN MATÉRIAU MINÉRAL
KREMER HARTMUT (Autor:in) / NEUBACHER JULIAN (Autor:in)
15.06.2022
Patent
Elektronische Ressource
Deutsch
IPC:
C04B
Kalk
,
LIME
Mauerwerkinstandsetzung mit mineralischem Sanierputz
British Library Online Contents | 2006
VERFAHREN ZUR HYDROPHOBIERUNG VON MINERALISCHEM LEICHTBAUSTOFF
| Europäisches Patentamt | 2020