Strontium ferrite-based sacrificial mortar and preparation method thereof

A strontium ferrite and mortar technology, which is applied in the field of strontium ferrite-based sacrificial mortar and the preparation of the material, can solve the problems of sacrificial mortar, large amount of cement, and high cost that have not been seen yet, and achieve high engineering application value and enhanced Improvement of corrosion resistance and compressive strength

Active Publication Date: 2021-02-02
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strontium ferrite-based sacrificial paste is a mixture of cement, water and strontium ferrite. It has better working performance, but the amount of cement is larger and the cost is higher.
However, there is no report on the preparation of sacrificial mortar with iron strontium oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A strontium ferrite-based sacrificial mortar, comprising the following components in parts by weight:

[0027] 900 parts of sulfoaluminate cement, 100 parts of strontium ferrite, 600 parts of quartz sand, 400 parts of water, 0.30 parts of water reducer.

[0028] Preparation:

[0029] (1) Weigh the required materials, including sulphoaluminate cement, strontium ferrite powder, quartz sand, tap water, and water reducer;

[0030] (2) Moisten the mixer and all tools and molds that need to be used;

[0031] (3) Add the weighed sulphoaluminate cement, strontium ferrite powder, and quartz sand to the forced single-horizontal shaft concrete mixer in sequence, select the stirring speed to be 45 rpm, and the mixing time to be 200 seconds, and stir evenly to obtain the mixture Material M1;

[0032] (4) First mix 1 / 2 of the water with all the water reducer, stir evenly, then add the evenly mixed solution into the mixed material M1, and then use the remaining water to clean the c...

Embodiment 2

[0034] A strontium ferrite-based sacrificial mortar, comprising the following components in parts by weight:

[0035] 800 parts of sulfoaluminate cement, 200 parts of strontium ferrite, 600 parts of quartz sand, 400 parts of water, 1.0 part of water reducer.

[0036] Preparation:

[0037] (1) Weigh the required materials, including sulphoaluminate cement, strontium ferrite powder, quartz sand, tap water, and water reducer;

[0038] (2) Moisten the mixer and all tools and molds that need to be used;

[0039] (3) Add the weighed sulphoaluminate cement, strontium ferrite powder, and quartz sand to the forced single-horizontal shaft concrete mixer in sequence, select the stirring speed to be 45 rpm, and the mixing time to be 200 seconds, and stir evenly to obtain the mixture Material M1;

[0040] (4) First mix 1 / 2 of the water with all the water reducer, stir evenly, then add the evenly mixed solution into the mixed material M1, and then use the remaining water to clean the con...

Embodiment 3

[0042] A strontium ferrite-based sacrificial mortar, comprising the following components in parts by weight:

[0043] 700 parts of sulfoaluminate cement, 300 parts of strontium ferrite, 600 parts of quartz sand, 400 parts of water, 35.0 parts of water reducer.

[0044] Preparation:

[0045] (1) Weigh the required materials, including sulphoaluminate cement, strontium ferrite powder, quartz sand, tap water, and water reducer;

[0046] (2) Moisten the mixer and all tools and molds that need to be used;

[0047] (3) Add the weighed sulphoaluminate cement, strontium ferrite powder, and quartz sand to the forced single-horizontal shaft concrete mixer in sequence, select the stirring speed to be 45 rpm, and the mixing time to be 200 seconds, and stir evenly to obtain the mixture Material M1;

[0048](4) First mix 1 / 2 of the water with all the water reducer, stir evenly, then add the evenly mixed solution into the mixed material M1, and then use the remaining water to clean the co...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2201/50C04B2111/20C04B2111/00862C04B14/06C04B2103/302C04B14/30C04B28/065C04B14/308C04B20/0076C04B40/0028C04B2103/32C04B24/2647C04B24/2641C04B40/0046
Inventor 褚洪岩蒋金洋赵欢高李秦健健汤金辉王凤娟黄凯健
Owner NANJING FORESTRY UNIV
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