Strontium ferrite-based sacrificial mortar and preparation method thereof

Abstract

The invention discloses strontium ferrite-based sacrificial mortar and a preparation method thereof. The strontium ferrite-based sacrificial mortar is mainly prepared from the following components inparts by weight: 720-1000 parts of sulphate aluminium cement, 100-300 parts of strontium ferrite, 600-650 parts of quartz sand, 400-450 parts of water and 0.01-35 part of water reducing agent. The production process is simple, and the mortar can be prepared by a conventional forced single-horizontal-shaft concrete mixer. The strontium ferrite-based sacrificial mortar prepared by the method has excellent working performance, relatively high compressive strength and excellent corrosion resistance, can be used in reactor core traps of third-generation and future fourth-generation nuclear power plants at present, and has relatively 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 alleviate 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 the core catcher. In severe nuclear power accidents, the sacrificial material in the core catcher interacts with the core melt. The temperature of the core melt is very high (3000°C-4000°C), which is enough to corrode the cement-based sacrificial material with a melting temperature of only 1100°C in contact with it. Once the sacrificial material of the core catcher is exhausted, the extremely high temperature core melt will continue to erode the bottom plate of the containment vessel. If the bottom plate of the containment vessel is melted, the integrity...