National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Possibilities of application of phosphate bond in brick abrasion dust treatment
Tmejová, Jana ; Havlica, Jaromír (referee) ; Opravil, Tomáš (advisor)
This bachelor´s thesis deals with possibilities of application of phosphate bond in brick abrasion dust treatment. Brick abrasion dust is produced as a secondary product of brick production during brick grinding. Brick abrasion dust is a relatively fine powder of the same composition as a burnt brick fragment. Since the brick abrasion contains an insufficient amount of the aluminum component, which is crucial for the formation of phosphate bond, the work is primarily concerned with finding a suitable aluminum dopant. The aim of the thesis is to find a suitable admixture that has a sufficient content of aluminum to form a phosphate bond and to determine the ideal amount to be added. Alternative sources of the aluminum component are tested in combination with a commercially available phosphate bond (Alufos 50).
Phosphate bond of foam filters and its influence on the technical properties
Langer, Jan ; Lang, Karel (referee) ; Sokolář, Radomír (advisor)
The theses deals with the preparation of phosphate binder. This binder provides not only high strength, but also high-heat resistance. The bond is made of acid phosphate and alumina. There should be substitute of alumina (Cr2O3) or the adition of its. The slurry was prepared according to the applicable procedures of Pyrotek. After this, the slurry was applied to the polyurethane foam, dried and kilned. The result is foam filter for aluminium casting.

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