Novel siliceous nuclear power sacrificial material and preparation method thereof

A sacrificial material, siliceous technology, applied in the field of new siliceous nuclear power sacrificial material and the preparation of the material, can solve the problems of unseen sacrificial materials, poor corrosion resistance, poor working performance, etc., and achieve a wide range of engineering application value , the effect of increasing the compressive strength and reducing the erosion rate

Active Publication Date: 2018-11-06
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are reports on nuclear power sacrificial materials at home and abroad, generally speaking, the currently prepared sacrificial materials have problems such a...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A novel siliceous nuclear power sacrificial material comprises the following components in parts by weight:

[0033] 330 parts of PII·52.5 Portland cement, 180 parts of fly ash, 20 parts of silica fume, 1700 parts of quartz sand, 150 parts of water, 9 parts of water reducing agent, 1.3 parts of polypropylene fiber, and 0.5 parts of sulfonated graphene.

[0034] Preparation:

[0035] (1) Weigh the required materials, including Portland cement, fly ash, silica fume, quartz sand, tap water, water reducing agent, polypropylene fiber, sulfonated graphene;

[0036] (2) Moisten the mixer and all tools and molds that need to be used;

[0037] (3) Add the weighed Portland cement, fly ash, silica fume, and quartz sand to the forced single-horizontal shaft concrete mixer in turn, select the stirring speed to be 45 rpm, and the mixing time to be 180 seconds. Stir evenly to obtain a mixture. Material M1;

[0038] (4) Add polypropylene fibers to the mixed material M1 in the above ...

Embodiment 2

[0041] A novel siliceous nuclear power sacrificial material comprises the following components in parts by weight:

[0042] 330 parts of PII·52.5 Portland cement, 180 parts of fly ash, 20 parts of silica fume, 1700 parts of quartz sand, 150 parts of water, 9 parts of water reducing agent, 1.3 parts of polypropylene fiber, and 1 part of sulfonated graphene.

[0043] Preparation:

[0044] (1) Weigh the required materials, including Portland cement, fly ash, silica fume, quartz sand, tap water, water reducing agent, polypropylene fiber, sulfonated graphene;

[0045] (2) Moisten the mixer and all tools and molds that need to be used;

[0046] (3) Add the weighed Portland cement, fly ash, silica fume, and quartz sand to the forced single-horizontal shaft concrete mixer in turn, select the stirring speed to be 45 rpm, and the mixing time to be 180 seconds. Stir evenly to obtain a mixture. Material M1;

[0047] (4) Add polypropylene fibers to the mixed material M1 in the above step ...

Embodiment 3

[0050] A novel siliceous nuclear power sacrificial material comprises the following components in parts by weight:

[0051] 330 parts of PII·52.5 Portland cement, 180 parts of fly ash, 20 parts of silica fume, 1700 parts of quartz sand, 150 parts of water, 9 parts of water reducing agent, 1.3 parts of polypropylene fiber, and 1.5 parts of sulfonated graphene.

[0052] Preparation:

[0053] (1) Weigh the required materials, including Portland cement, fly ash, silica fume, quartz sand, tap water, water reducing agent, polypropylene fiber, sulfonated graphene;

[0054] (2) Moisten the mixer and all tools and molds that need to be used;

[0055] (3) Add the weighed Portland cement, fly ash, silica fume, and quartz sand to the forced single-horizontal shaft concrete mixer in turn, select the stirring speed to be 45 rpm, and the mixing time to be 180 seconds. Stir evenly to obtain a mixture. Material M1;

[0056] (4) Add polypropylene fibers to the mixed material M1 in the above ...

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PUM

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Abstract

The invention discloses a novel siliceous nuclear power sacrificial material and a preparation method thereof. The novel sacrificial material is mainly prepared from 325-335 parts of PII.52.5-grade portland cement, 175-190 parts of pulverized fuel ash, 15-25 parts of silicon powder, 1,650-1,750 parts of quartz sand, 145-155 parts of water, 7-10 parts of water reducing agent, 1-1.5 parts of polypropylene fibers and 0.5-1.5 parts of sulfonated graphene. The preparation technology is simple, and a common forcing-type single-horizontal-shaft concrete mixer is adopted for preparing the nuclear power sacrificial material which is excellent in liquidity, strength and corrosion resistance. The prepared novel siliceous iron nuclear power sacrificial material has the advantages of good working performance, high strength, good corrosion resistance and the like, is mainly applied to a current third-generation nuclear power station reactor core catcher and has high engineering application value.

Description

technical field [0001] The invention relates to the field of nuclear power materials, in particular to a novel siliceous nuclear power sacrificial material and a preparation method of the material. Background technique [0002] In the current third-generation nuclear power technology, in order to alleviate severe nuclear power accidents, a core trap is usually installed under the reactor of the third-generation nuclear power plant. The core catcher is mainly used to collect, cool and solidify the core melt. Sacrificial material is an important part of the core catcher in nuclear power plants, and the material plays a vital role in the cooling and solidification of the core melt. Firstly, the sacrificial material can oxidize the highly radioactive substances in the core melt; secondly, the sacrificial material can reduce the temperature of the core melt; finally, the sacrificial material can also reduce the increase of the internal pressure of the containment vessel. Althou...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00862C04B2201/50C04B18/08C04B18/146C04B14/06C04B24/24C04B16/0633C04B14/024
Inventor 褚洪岩李荷刘昱昕俞龑林子楠
Owner NANJING FORESTRY UNIV
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