English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In order to solve the shortcomings when removing lead from crude antimony in   the traditional antimony smelting, a new process was provided using NaPO3 as   lead elimination reagent to yield phosphate slag, and it was removed by   floating on the surface of the liquid antimony. Reaction mechanism was   clarified by using the TG-DTA and XRD techniques and single factor   experiments of removal lead from crude antimony were engaged. The results   show that PbO and NaPO3 begin endothermic reaction at 863K (590°C), and the   reaction mainly form NaPb4(PO4)3 and NaPbPO4 below 1123K (850°C) and above   1123K (850°C), respectively. Sb2O3 and NaPO3 start the reaction at 773K   (500°C) and generate an antimonic salt compound. The reaction product of the   mixture of PbO, Sb2O3 and NaPO3 show that NaPO3 reacted with PbO prior when   NaPO3 was insufficient, amorphous antimony glass will be generated only when   NaPO3 was adequate. Single factor experiments were taken with NaNO3 as   oxidizing agent under argon, effect of reaction time, reaction temperature   and dosage of NaPO3 and NaNO3 on smelting results. The average content of   lead in refined antimony was 0.05340% and 98.85% of lead were removed under   optimal conditions; the content of lead in antimony have meet the   requirements of commercial antimony

Removal of lead from crude antimony by using NaPo3 as lead elimination reagent