化工学报Issue(10)：4191-4196,6.DOI:10.3969/j.issn.0438-1157.2014.10.058
高频热等离子体热解水氯镁石沉积氧化镁薄膜
Deposition of MgO film by pyrolysis of bischofite through RF thermal plasma process
摘要
Abstract
Salt lake resources are rich in China, and the Qarham salt lake in Qinghai Province is the largest potash fertilizer manufacturing base. However, a large amount of byproduct bischofite (MgCl2·6H2O) of the potassium fertilizer industry cannot be utilized effectively and are discarded back into the salt lakes. This has become the primary problem after extraction of potassium from salt lake. This paper presents a thermal plasma process for pyrolysis of bischofite. Thermal plasma was used as an ultra-high heat source to intensify the pyrolysis process. At the same time, the high temperature pyrolysis products were deposited to obtain high value-added MgO film. The deposition efficiency of MgO film was high, up to 3.2μm·min-1. The particle size on the film was between 10 and 60 nm, and the MgO film exhibited a strong ultraviolet-green photoluminescence emission under the excitation of 325 nm He-Ne laser. The thermal plasma technique is simple and suitable for large-scale continuous process.关键词
水氯镁石/薄膜/沉积/热解/热等离子体Key words
bischofite/film/deposition/pyrolysis/thermal plasma分类
轻工纺织引用本文复制引用
张海宝,曹腾飞,程易..高频热等离子体热解水氯镁石沉积氧化镁薄膜[J].化工学报,2014,(10):4191-4196,6.基金项目
国家重点基础研究发展计划项目（2012CB720301）；国家自然科学基金项目(21176137)。 （21176137）
