A kind of strontium ferrite-based sacrificial mortar and preparation method thereof

Abstract

The invention discloses a strontium ferrite-based sacrificial mortar and a preparation method. The strontium ferrite-based sacrificial mortar is mainly composed of 720-1000 parts of sulfoaluminate cement, 100-300 parts of strontium ferrite, and 600 parts of quartz sand. ‑650 parts, 400-450 parts water, 0.01-35 parts water reducing agent. The production process of the invention is simple and can be prepared by a conventional forced single-horizontal shaft concrete mixer. The strontium ferrite-based sacrificial mortar prepared by the invention has excellent working performance, high compressive strength and excellent corrosion resistance, and can be used in the current third-generation and future fourth-generation nuclear power plant core traps , with high engineering application value.

Description

technical field

[0001] The invention relates to the field of nuclear power materials, in particular to a strontium ferrite-based sacrificial mortar and a preparation method of the material. Background technique

[0002] In order to mitigate and alleviate the serious consequences of nuclear power plant accidents, in the third generation nuclear power technology, the core melt is generally collected, cooled and solidified by core traps. In the event of a severe nuclear power accident, the sacrificial material in the core trap interacts with the core melt. The temperature of the core melt is high (3000°C-4000°C), enough to erode the cement-based sacrificial material with a melting temperature of only 1100°C in contact with it. Once the sacrificial material of the core trap is exhausted, the extremely high temperature core melt will continue to erode the bottom of the containment. If the bottom of the containment is melted through, the integrity of the containment is lost and t...