Abstract:
Gegenstand der vorliegenden Erfindung ist ein Verfahren zur Herstellung von Granulaten, insbesondere zum Einsatz als Wärmedämmung für eine Metallschmelze. Dabei wird ein pulverförmiges Mineral mit einem Bindemittel gemischt und die Mischung zu einem Halbfertigprodukt granuliert. Erfindungsgemäß wird die Granulatmischung bzw. das Halbfertigprodukt auf eine Temperatur oberhalb der Schmelztemperatur respektive Zersetzungstemperatur des als Salz ausgebildeten Bindemittels schlagartig erhitzt, so dass sich das Bindemittel unter Gasabgabe und Volumenzunahme zersetzt und dadurch das Schüttgewicht der Granulatmischung und folglich das Schüttgewicht des Fertigproduktes gegenüber dem Halbfertigprodukt sinkt.
Abstract:
The invention relates to a composition, which comprises a particulate mixture of: (i) 25 to 80 % calcined clay; (ii) 5 to 70% fluxing component; and (iii) 5 to 70 % filler component.
Abstract:
An insulator including alumina in an amount between about 90 and about 99% by weight and an oxide mixture or glass mixture including Boron Oxide, Phosphorus Oxide, or both Boron and Phosphorus Oxide.
Abstract:
A filter device for filtering liquid passing there through, the filter device comprising a housing (101) for securing to a source (3) of the liquid and having a liquid accommodating duct (10) there through for accommodating the liquid. The duct (10) extends from an upstream end for communicating with the liquid source (3), to a downstream end terminating in an outlet (14) through which the liquid is discharged from the filter device, characterised in that the filter device incorporates a filter element (110, 111, 113) for substantially removing bacteria from the liquid passing there through.
Abstract:
A ceramic media for increasing the pH of a fluid, such as potable water, has a composition comprising at least 40 weight percent silicon oxide, 25 weight percent of a mixture of alkaline earth oxides and less than 5 weight percent alumina. An apparatus that changes the pH of a fluid by allowing the fluid to flow therein, contact the media and then exit the apparatus is also disclosed.
Abstract:
A ceramic includes alumina in an amount between about 90 and about 99% by weight, a zirconium containing compound in an amount between about 0 and about 1 % by weight, and an oxide mixture in an amount between about 1 and about 10% by weight. The oxide mixture includes a glass former and a network modifier, wherein the molar ratio of the glass former to the network modifier ranges between about 0.8:1 and 1.2:1. The ceramic insulator is particularly adapted for use as an insulator in a spark plug to provide improved dielectric strength and shunt resistance of greater than one 1000 megaohms at 1000 degrees Fahrenheit, so as to reduce the shunting of the spark plug and thereby improve the quality of the spark generated by the spark plug.
Abstract:
Embodiments of the present invention encompass methods of improving flow of dry materials. Embodiments of the present invention also encompass compositions with improved flow. Embodiments of the present invention also encompass methods of using the compositions with improved flow.