NDLI: Separation of Lead from Crude Antimony by Pyro-Refining Process with NaPO$

Content Provider	Springer Nature Link
Author	Ye, Longgang Hu, Yuejie Xia, Zhimei Chen, Yongming
Copyright Year	2016
Abstract	The main purpose of this study was to separate lead from crude antimony through an oxidation pyro-refining process and by using sodium metaphosphate as a lead elimination reagent. The process parameters that will affect the refining results were optimized experimentally under controlled conditions, such as the sodium metaphosphate charging dosage, the refining temperature and duration, and the air flow rate, to determine their effect on the lead content in refined antimony and the lead removal rate. A minimum lead content of 0.0522 wt.% and a 98.6% lead removal rate were obtained under the following optimal conditions: $$ W_{{\text{NaPO}_{\text{3}} }} $$ = 15% W $_{Sb}$ (where W represents weight), a refining temperature of 800°C, a refining time of 30 min, and an air flow rate of 3 L/min. X-ray diffractometry and scanning electron microscopy showed that high-purity antimony was obtained. The smelting operation is free from smoke or ammonia pollution when using monobasic sodium phosphate or ammonium dihydrogen phosphate as the lead elimination reagent. However, this refining process can also remove a certain amount of sulfur, cobalt, and silicon simultaneously, and smelting results also suggest that sodium metaphosphate can be used as a potential lead elimination reagent for bismuth and copper refining.
Starting Page	1541
Ending Page	1546
Page Count	6
File Format	PDF
ISSN	10474838
Journal	JOM
Volume Number	68
Issue Number	6
e-ISSN	15431851
Language	English
Publisher	Springer US
Publisher Date	2016-04-18
Publisher Institution	The Minerals, Metals & Materials Society (TMS)
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Chemistry/Food Science Physics Environment Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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