使用有毒工业废物 (红色泥) 制造的陶瓦片中阻花
Varsha Agrawal1, Rini Paulose2, Rahul Arya1
1CSIR-Advanced Materials and Processes Research Institute (CSIR-AMPRI), Bhopal, Madhya Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
The Science of the total environment
|January 12, 2025
概括
将氧化物 (KOH) 添加到红泥 (RM) 基陶上,可显著减少硫酸的花,改善结构完整性和X射线屏蔽性能. 这项创新提高了工业废物在建筑材料中的利用率.
科学领域:
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
- 陶工程 陶工程 陶工程
背景情况:
- 红泥 (RM) 是行业的废物,是建筑材料的潜在前体.
- 基于RM的材料的高性导致花,损害结构完整性.
- 来自RM,BaSO4和考林粘土的X射线屏蔽由于Na2SO4形成,在1000°C以上呈现严重的花.
研究的目的:
- 为了减轻红色泥基X射线屏蔽中的硫酸 (Na2SO4) 喷花.
- 为了研究氧化 (KOH) 添加对属性的影响.
- 为了提高红色泥在耐用建筑材料中的利用.
主要方法:
- 陶加工红色泥,BaSO4和高粘土混合物.
- 在1000°C以上烧结以诱导Na2SO4形成.
- 进行X射线衍射 (XRD) 分析以识别相位并量化Na2SO4.4.
- 瑞特维尔德精细化分析阶段形成与KOH添加.
- 机械测试 (屈曲强度) 和密度测量.
主要成果:
- 通过XRD识别的Na2SO4形成,由1000°C以上的固态反应产生的.
- 添加8%的KOH可以将Na2SO4含量从3.2%降低到0.2%.
- 花从90%降至2%,增加了8%的KOH.
- 密度从2.8g/cc增加到3.6g/cc.
- 柔性强度从16.46N/mm2提高到19.46N/mm2. 这是一个很大的变化.
结论:
- 添加KOH有效地抑制了基于RM的陶中的Na2SO4花.
- KOH增强了密度,机械强度和X射线衰减.
- 15毫米厚的KOH瓦片显示屏蔽相当于2毫米的在100kV.
- 这种方法为在高性能建筑材料中利用红泥提供了可行的解决方案.
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