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在米燃烧时SiO2结晶的相位图,以控制灰质量

Mai-Mari Hirose Carlsen¹, Yukie Saito¹

¹Graduate School of Agricultural and Life Sciences, The University of Tokyo 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.

Waste management (New York, N.Y.)

|April 18, 2024

概括

快速冷却的米 (RH) 灰可以防止结晶,即使在高燃烧温度下. 这一发现扩大了这种丰富的农业废物材料的潜在应用.

科学领域:

材料科学材料科学材料科学
农业废物管理农业废物管理
石英化学石英化学

背景情况:

米 (RH) 是一个丰富的农业废物,含有约20%的二氧化 (SiO2·nH2O).
燃烧RH产生大量的灰,在某些条件下可以结晶.
在RH中存在 (Na) 和 (K) 等矿物质,降低了与纯SiO2相比,的结晶温度.

研究的目的:

为了研究RH灰结晶的时间和温度依赖性.
为了确定防止RH灰结晶的条件.
为更广泛的应用建立一个控制RH灰属性的框架.

主要方法:

RH被燃烧并接受了高度热控制的研究.
系统地研究了影响RH灰结晶的时间和温度参数.
冷却速度有所变化,包括20°C/分钟的快速冷却,以观察它们对灰结构的影响.
用温度-时间图来绘制结晶路径,并识别无形/晶体区域.

主要成果:

快速冷却,如20°C/分钟,有效地防止结晶在RH灰,即使在950°C燃烧后.
在温度-时间图上定义了一个独特的边界区域,将RH灰的无形和晶状区域分开.
这个边界区域的位置受到不同类型的RH无机元素组成的影响,从而影响了感效应.

结论:

控制冷却速度对于保持RH灰的无形状态至关重要.
开发的温度-时间图为管理RH灰结晶提供了一个预测工具.
随着RH成分的变化,需要调整加工参数以达到所需的灰属性.

关键词:

没有形态的无形.燃烧方式燃烧方式结晶化结晶化结晶化米皮米皮米皮石灰是什么意思?石灰是什么意思

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