Molten thermite teeming into an iron oxide particle bed
The two particle bed tests employed 10-kg thermite melts (2700/sup 0/K) teemed into a bed of iron oxide particles. Objective was to investigate bed penetration, particle flotation and fracture, and heat flux partitioning. The results show that the hydraulic forces exerted by the melt did not immediately displace the bed. Bed penetration was by melting and absorbing of the particles with the major portion of the displaced iron oxide terminating in the alumina phase of the melt. The movement of the penetration front suggests the movement to be a series of melt/freeze/remelt processes. The large grain structure of the iron phase indicates that the cooling was slow and continuous. A coherent 1-cm-thick layer of iron oxide in contact with the melt was created by sintering of the particles. The particle size of the unaffected portions of the bed showed very little fracturing due to thermal stress and slightly over 7% particle growth due to sintering. The calculated heat flux values to the surrounding crucible structure suggest that the bed is effective in delaying and reducing the magnitude of the peak heat flux values.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 7142954
- Report Number(s):
- NUREG/CR-3023; SAND-82-2475; ON: DE84011675
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Steam explosion studies with molten iron-alumina generated by thermite reactions
Transient experiments with thermite melts for a core catcher concept based on water addition from below
Related Subjects
CORE CATCHERS
TESTING
MELTDOWN
FREEZING
GRANULAR MATERIALS
HEAT FLUX
IRON OXIDES
MELTING
PARTICLE SIZE
THERMITE PROCESS
ACCIDENTS
CHALCOGENIDES
CHEMICAL REACTIONS
IRON COMPOUNDS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REDUCTION
SIZE
TRANSITION ELEMENT COMPOUNDS
220900* - Nuclear Reactor Technology- Reactor Safety