Preliminary Research on Granulation Process of Dust Waste from Reclamation Process of Moulding Sands with Furan Resin
Journal Title: Archiwum Odlewnictwa - Year 2012, Vol 12, Issue 3
Abstract
The results of investigations of the granulation process of foundry dusts generated in the dry mechanical reclamation process of used sands, where furan resins were binders are presented in the paper. Investigations concerned producing of granules of the determined dimensions and strength parameters. Granules were formed from the dusts mixture consisting in 50 mass% of dusts obtained after the reclamation of the furane sands and in 50 mass % of dusts from sands with bentonite. Dusts from the bentonite sands with water were used as a binder allowing the granulation of after reclamation dusts from the furane sands. The following parameters of the ready final product were determined: moisture content (W), shatter test of granules (Wz) performed directly after the granulation process and after 1, 3, 5, 10 days and nights of seasoning, water-resistance of granules after 24 hours of being immersed in water, surface porosity ep and volumetric porosity ev. In addition the shatter test and water-resistance of granulate dried at a temperature of 105oC were determined. Investigations were performed at the bowl angle of inclination 45o, for three rotational speeds of the bowl being: 10, 15, 20 rpm. For the speed of 10 rpm the granulation tests of dusts mixture after the preliminary mixing in the roller mixer and with the addition of water-glass in the amount of 2% in relation to the amount of dust were carried out. The obtained results indicate that the granulator allows to obtain granules from dusts originated from the reclamations of moulding sands with the furane resin with an addition of dusts from the bentonite sands processing plants.
Authors and Affiliations
J. Kamińska
Keywords
Related Articles
- EP ID EP72782
- DOI 10.2478/v10266-012-0081-2
- Views 111
- Downloads 0
Ecological aspects of the use of lost foam patterns
The paper discusses some aspects of ecology in the use of lost foam patterns for piece production of large castings poured from ferrous alloys under the conditions of Metalodlew SA. Foundry. The technological processes u...
Application of microjet in heat treatment of aluminium bronzes
Mechanical properties of a CuAl10Fe4Ni4 bronze subjected to solution heat treatment and toughening were examined. In solution heat treatment, a microjet was used to raise the cooling rate. A slight increase of mechanical...
Influence of a matrix on properties of mottled cast iron applied for mill rolls
Mill rolls are ones of the most expensive tools applied in plastic working processes and have to satisfy several criteria, which allow them to be used. Cast iron mill rolls, due to their fracture toughness and tribologic...
Reclaimability of the spent sand mixture – sand with bentonite – sand with furfuryl resin
Introduction of new binding materials and new technologies of their hardening in casting moulds and cores production requires the application of reclamation methods adequate to their properties as well as special devices...
Influence of the technology of melting and inoculation preliminary alloy AlBe5 on change of concentration of Al and microstructure of the bronze CuAl10Ni5Fe4
Examining was the aim of the work: influence of the permanent temperature 1300°C ± 15°C and changing time of isothermal holding in the range 0÷50 minutes on the melting loss of aluminum in the bronze CuAl10Ni5Fe4; the qu...