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煅烧分解钾长石提取碳酸钾的实验研究 苗世硕1,冯武威1,刘贺1,张盼1,马鸿文1 (1.中国地质大学材料科学与工程学院,北京,100083;2.阜阳师范学院化学系,阜阳,236300) 摘要:探讨了碳酸钾助熔焙烧钾长石分解,熟料水浸取,CO2酸化浸取液,过滤除去沉淀,滤液经结晶除杂提取碳酸钾的过程.实验表明:分解钾长石最佳焙烧温度为860℃,焙烧时间40min,滤液酸化后的最佳pH值为8.0,滤液制备出的K2CO3,达到GB/T1587-2000Ⅱ型要求.并用差热/热失重和X粉晶衍射法对焙烧熟料进行分析,初步分析了分解反应的机理. 关键词:钾长石; 煅烧; 分解反应; 碳酸钾; 矿物聚......
S-Doped Carbon-Coated FeS2/C@C Nanorods for Potassium StorageXin Li1,Huaping Wang1,Wenchao Zhang2,Yuezhan Feng3,Jianmin Ma11. School of Physics and Electronics,Hunan University2. Institute... Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education,Zhengzhou University摘 要:Potassium-ion batteries(PIBs) are promising......
Trans. Nonferrous Met. Soc. China 25(2015) 966-972 Preparation of potassium chromate by roasting of carbon ferrochrome Guo-rong HU, Jia-liang WANG, Zhong-dong PENG, Ke DU, Wei-gang WANG, Qing-lai... ferrochrome to prepare potassium chromate in the presence of potassium carbonate and air was investigated. The effects of reaction temperature, reaction time, mole ratio of potassium carbonate to carbon......
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水热法从钾长石中提取钾,硅,铝的实验研究 李禾1,刘善科1,刘建明1,韩成1 (1.中国科学院,地质与地球物理研究所,北京,100029) 摘要:通过水热化学反应将钾长石中的钾,硅和铝转变为可溶性组份,具有十分重要的应用价值.本文用单因素实验考察了不同水热反应实验条件对钾长石中钾,硅,铝溶出率的影响,并根据溶出率结果优化了反应条件.单因素实验结果表明:(1)在190℃条件下,随生石灰加入量的逐渐增加,产物中各元素的溶出率有一个先增加后减少的趋势.(2)在相同的生石灰,钾长石比例下,当反应16 h后,产物中各元素的溶出率随反应时间的延长趋于平缓.(3)随反应温度的逐渐增加,产物中各元素的溶......
; 文献标识码:A Preparation and properties of electroless composite plating of nickel-phosphous-potassium titanate whisker JIN Ya-xu, HUA Lin (School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China) Abstract: Nickel-phosphorus composite coatings containing potassium titanate whisker (PTW) were prepared by electroless plating. The surface......
锶(Ⅱ)-铁氰酸盐-钙黄绿素体系流动注射-后化学发光法的研究何云华1(1.陕西省西安市长安大学环境科学与工程学院)摘 要:用流动注射化学发光分析仪的静态测量系统,研究了Sr2+在铁氰化钾-钙黄绿素体系中的后化学发光行为.实验发现:当将碱性铁氰化钾溶液注入到钙黄绿素溶液中,立即发生了一化学发光反应,检测到强的化学发光信号,反应结束后化学发光信号回落至基线,再注入Sr2+标准溶液,又引发一个新的化学发光反应,检测到另一强的化学发光信号,反应结束后化学发光信号又回落至基线.表明了Sr2+在铁氰化钾-钙黄绿素化学发光反......
888)确定氢氧化钾的准确含量.为充分考察不同浓度下的铝酸钾的分解过程[34],实验所选溶液浓度和温度如表1所示. 表1 过饱和铝酸钾溶液自发分解过程的实验条件 Table 1 Experimental conditions for spontaneous decomposition of supersaturated potassium aluminate..., LI P, YU J G. Insights into the polymorphic transformation mechanism of aluminum hydroxide during carbonation of potassium aluminate solution[J]. Crystengcomm, 2018, 20: 1431-1442. [40] SWEEGERS C......
Synthesis of potassium hexatitanate whiskers using hydrothermal methodWANG Jua, LI Chuna, LIANG Bina, and WANG Xiaoqingb a College of Chemical Engineering, Sichuan University, Chengdu 610065, China b Department of Chemistry, Tsinghua University, Beijing 100084, China摘 要:High quality potassium hexatitanate whiskers were hydrothermally synthesized in one......
equilibrium and kinetics of potassium ethyl xanthate-lead combined pollutants on montmorillonite HAO Yan, WU Xiao-lian, MO Ce-hui, LI Yan-wen, HUANG Xian-pei, QU Xiang-long, XIANG Lei, LIANG Jia-hua (1. Key...) Abstract: Adsorption equilibrium and kinetics of potassium ethyl xanthate-lead combined pollutants to montmorillonite by static adsorption experiments were investigated to reveal environmental behavior......
