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Trans. Nonferrous Met. Soc. China 27(2017) 676-685 φ-pH diagram of As-N-Na-H2O system for arsenic removal during alkaline pressure oxidation leaching of lead anode slime Yun-long HE1, Rui-dong XU1,2...: In order to illustrate the thermodynamic characteristics of arsenic during alkaline pressure oxidation leaching process of lead anode slime (NaNO3 as oxidant; NaOH as alkaline reagent), the φ-pH diagrams......
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Trans. Nonferrous Met. Soc. China 30(2020) 223-235 Separation of arsenic from arsenic-antimony-bearing dust through selective oxidation-sulfidation roasting with CuS Da-peng ZHONG, Lei LI State Key... for separating arsenic from arsenic-antimony-bearing dusts using CuS was put forward, in which Sb was transformed into Sb2O4 and Sb2S3 that stayed in the roasted calcine while As was volatilized in the form......
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微波消解-氢化物发生原子荧光光谱法测定进口铜锍中砷和汞葛钰玮1,索金玲2,王成3,胡晓民4(1.江西省新余市江西赣锋锂业有限公司2.阿拉山口出入境检验检疫局,新疆阿拉山口 8334183.新疆出入境检验检疫局技术中心,新疆乌鲁木齐 8300634.中国检验认证集团新疆阿拉山口分公司,新疆阿拉山口 833418)摘 要:建立了测定进口铜锍样品中砷,汞含量的氢化物发生原子荧光光谱法.在铜锍试样中加入王水和氢氟酸,经微波消解后稀释,消解液中加入硫脲-抗坏血酸预还原,加硼氢化钾使砷和汞生成硼氢化物,用原子荧光光谱法测定......
% and roasting time of 120 min, 98.40 wt% of arsenic removal rate and 80.40 wt% antimony recovery rate could be obtained. In addition, the "As2O3" product could be used for preparing ferric arsenate which realized the harmless treatment of it. Key words: antimony-bearing dust; separation of arsenic and antimony; antimony recovery; reduction roasting; waste utilization Cite this article as: ZHONG Da-peng, LI......
保证砷,锑的有效脱除. 关键词:铅阳极泥;碱性加压氧化浸出;脱砷;脱锑 中图分类号: 文献标志码:A Arsenic and antimony removal from bismuth-rich lead anode slime by alkaline pressure oxidation leaching LI Kuo1, XU... Ltd., Kunming 650051, China) Abstract: The arsenic and antimony were removed from bismuth-rich lead anode slime by alkaline pressure oxidation leaching. The effects of factors including oxidant......
含砷铁矿石烧结脱砷的试验研究吕庆1,张淑会1,胡晓1(1.河北省唐山市河北理工大学冶金与能源学院)摘 要:采用化学分析,XRD,高倍显微镜,EDS,XPS及原子吸收光谱分析等测试技术确定华南含砷铁矿石的理化性质,研究不同因素对华南含砷铁矿石烧结脱砷的影响并确定适宜的烧结脱砷工艺参数.结果表明:华南含砷铁矿石主要以磁铁矿和脉石为主,其中砷以FeAsS及少量As2S3形式存在,其质量分数为0.282%.华南含砷铁矿石烧结过程砷化物主要发生FeAsS的氧化和热分解反应.在弱氧化气氛条件下,华南含砷铁矿石的脱砷率随反应......
氢化物发生-原子荧光光谱法测定锰矿中砷结果的不确定度评定刘文甫1,应文河1(1.天津市中钢集团天津地质研究院有限公司矿产测试中心)摘 要:对氢化物发生-原子荧光光谱法测定锰矿中砷含量的不确定度来源进行分析,表明不确定度主要来源于样品称量过程,待测溶液定容体积,标准溶液配制,校准曲线拟合以及待测溶液重复测量.通过对各分量的不确定度评定,得到合成标准不确定度,在此基础上将合成标准不确定度乘以95%置信度下的扩展因子2,得到扩展不确定度,最后给出了含有扩展不确定度的砷测定结果.关键词:氢化物发生-原子荧......