无机陶瓷坯体增强剂对固废陶瓷泥浆性能与生坯强度的影响

Influence of Inorganic Ceramic Body Reinforcing Agent on Properties of Solid Waste Ceramic Slurry and Strength of Green Bodies

王永强 ¹查越 ²林克辉 ¹黄弘 ³邵宇佳 ⁴胡海泉³

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作者信息

1. 江西和美陶瓷有限公司,江西宜春 331132
2. 景德镇陶瓷大学,江西景德镇 333403;中国轻工业陶瓷研究所,江西景德镇 333000
3. 景德镇陶瓷大学,江西景德镇 333403
4. 景德镇艺术职业大学,江西景德镇 333000
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摘要

在制备建筑陶瓷坯体的过程中,获得高强度生坯的同时保障浆料的流动性是建陶生产中急需解决的关键问题.通过以凹凸棒石、煅烧凹凸棒石、硅酸钠溶液作为复合坯体增强剂加入到硅灰石尾矿建筑陶瓷坯体配方中,研究了不同添加剂对于浆料流动性能与生坯强度的影响.结果表明,凹凸棒石的引入可以改善浆料流动性与悬浮性;而煅烧凹凸棒石可以在硅酸钠溶液的作用下产生聚合反应,增强颗粒间的结合度.在干燥温度为90 ℃、干燥时间为45 min的条件下,使用2wt.％的凹凸棒石、0.6wt.％煅烧凹凸棒石与0.8 wt.％模数为2的硅酸钠溶液可以获得良好的浆料流动性,并提升生坯强度.

Abstract

A key issue that needs to be resolved in the production of structural ceramics is to obtain green bodies with sufficiently high strength,while maintaining a good slurry flowability.Attapulgite,calcined attapulgite and sodium silicate solution were utilized as composite reinforcing agents,for building ceramics derived from wollastonite tailings.The influence of the agents on fluidity of the slurries and strength of the green bodies was examined.It is demonstrated that the introduction of attapulgite improved flow rate and dispersion of the slurries.Calcined attapulgite underwent a polymerization reaction in the presence of sodium silicate solution,thereby enhancing the binding strength between particles.At drying temperature of 90 ℃ for 45 min,with 2 wt.％attapulgite,0.6 wt.％calcined attapulgite,and 0.8 wt.％of sodium silicate solution with a modulus of 2,slurries with high fluidity could be obtained and strength of the green bodies was improved.

关键词

固废利用/硅灰石尾矿/坯体增强剂/泥浆流动性/生坯强度

Key words

solid waste utilization/wollastonite tailings/reinforcing agent/slurry fluidity/strength of the green bodies

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出版年

2024

陶瓷学报

景德镇陶瓷学院

陶瓷学报

CSTPCD北大核心

影响因子：0.7

ISSN：1000-2278

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