摘要
本文研究了煤中元素,特别是微量稀有元素,在不同的化学分异和机械分异过程中,遵循着一些基本的迁移分配规律。得到,即便是人工作用,任何可量化的地球化学过程或者是其他化学过程,均符合元素周期性变化规律,并在本文中首次实现了定量化描述。而人工的机械分异过程,元素在不同粒级的飞灰颗粒之间,其分配规律除了可用元素周期性变化规律描述外,还可用自回归函数得到的经验公式进行定量描述。但在实验空间密闭的条件下,元素到煤灰中浓集作用,则不符合元素周期性变化规律,呈现出所有元素均以同比例同倍数的迁移方式,富集到高温灰化后的煤灰中。从而得出了煤在不同利用过程中,煤及其燃烧的副产物中稀有金属元素和其他微量元素的几种常见的分布规律。
Experimental results showed that the elements in coal,especially trace elements,follow some basic migration and distribution rules during various chemical and mechanical differentiation processes.Even with artificial actions,all quantifiable geochemical or other chemical processes conformed to the periodic law of elements,which were described quantitatively for the first time in this paper.For the artificial mechanical differentiation,the distribution rule of elements between various sizes of fly ash particles could be depicted by the periodic law as well as the empirical formula from the auto-regression function.However,in the condition of enclosed space,the concentration effect of elements in coal ash was not accordance with the periodic law,but presented all elements concentrating into the high temperature carbonized coal ash with the same ratio.
作者
杨建业
张卫国
邹建华
Yang Jianye;Zhang Weiguo;Zou Jianhua(College of Material Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;College of Geology and Environment,Xi'an University of Science and Technology,Xi'an 710054,China;College of Civil Engineering,Chongqing Three Gorges University,Chongqing 404020,China)
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2020年第4期440-448,共9页
Chinese Journal of Rare Metals
基金
国家自然科学基金项目(41672145,41802187)
陕西省教育厅科研计划项目(18JK0521)
重庆市科研院所绩效激励引导专项(cstc2017jxjl190013)资助。
关键词
煤
元素的地球化学行为
元素周期律
自回归函数
煤灰
coal
geochemical behavior of elements
periodic law
auto-regression function
coal ash
