花岗岩锯泥烧结建筑陶瓷工艺研究

摘要/Abstract

摘要： 为推动大宗固废的综合利用,减轻花岗岩锯泥对环境的污染,本文探索了一种使用花岗岩锯泥、高铝黏土及少量添加剂并通过高温烧结来制备陶瓷坯体的方法,研究了原料配比和添加剂含量对烧结陶瓷坯体力学性能和显微结构的影响。结果表明,通过向球磨原料中添加聚乙烯醇(PVA)溶液可提高造粒粉的塑性,大幅提高花岗岩锯泥在坯体中的占比。高铝黏土可提升锯泥的烧结特性和成品的综合力学性能。其中,锯泥含量为80%(质量分数)、高铝黏土含量为20%(质量分数)的配方成品烧结温度为(1 160±30) ℃,体积密度为2.43 g/cm³,吸水率为1%,弯曲强度为54 MPa,抗压强度为341 MPa,花岗岩锯泥利用率高且成本低,这为锯泥综合利用提供了一种高效的可行性方案。

关键词: 锯泥, 固废利用, 环保, 烧结, 强化机制

Abstract: In order to promote the comprehensive utilization of bulk solid waste and reduce the environmental pollution caused by granite scrap mud, this paper explores a method of preparing ceramic bodies by high temperature sintering using granite scrap mud, high alumina clay and a small amount of additives. The effects of raw material ratio and additive content on the mechanical properties and microstructure of sintered ceramic tiles were studied. The results show that the plasticity of the granulation powder can be improved by adding polyvinyl alcohol (PVA) solution to the ball milling raw material, and the proportion of the granite scrap mud in the body greatly increases. High alumina clay can improve the sintering characteristics of granite scrap mud and the comprehensive mechanical properties of finished products. Among them, the sintering temperature of the finished product with granite scrap mud content of 80% (mass fraction) and clay content of 20% (mass fraction) is about (1 160±30) ℃, the bulk density of the finished product is 2.43 g/cm³, the water absorption rate is 1%, the bending strength is 54 MPa, and the compressive strength is 341 MPa. The comprehensive utilization rate of granite scrap mud is high, and the comprehensive cost is low, which provides an efficient and feasible scheme for the comprehensive utilization of saw mud.

Key words: granite scrap, solid waste utilization, environmental protection, sintering, strengthening mechanism

中图分类号:

TU523

耿振华, 李凯, 毕志英, 刘文华, 李海舰, 孙高梅琳, 吴萍. 花岗岩锯泥烧结建筑陶瓷工艺研究[J]. 硅酸盐通报, 2023, 42(12): 4482-4489.

GENG Zhenhua, LI Kai, BI Zhiying, LIU Wenhua, LI Haijian, SUN Gaomeilin, WU Ping. Sintering Process of Granite Scrap Mud Building Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4482-4489.

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