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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 1    January 2018

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Separation of azodicarbonamide from surface of diatomite by froth flotation
ZHANG Qin(张覃)1, 2, 3, XIE Jun(谢俊)1, 2, 3, 4, CHEN Jian-hua(陈建华)5, CHENG Wei(程伟)1, 2, 3

1. Mining College, Guizhou University, Guiyang 550025, China; 2. Guizhou Key Lab of Comprehensive Utilization of Non-metallic Mineral Resources, Guizhou University,Guiyang 550025, China; 3. Guizhou Engineering Lab of Effective Utilization of Regional Mineral Resources, Guizhou University,Guiyang 550025, China; 4. College of Resources and Environment, Guizhou University, Guiyang 550025, China; 5. College of Resources and Metallurgy, Guangxi University, Nanning 530004, China

Abstract:The separation of azodicarbonamide (AC) from the surface of diatomite by froth flotation is investigated in this research. Pure samples of diatomite, AC and 1:1 mixtures of the two were floated in a lab-scale flotation cell with collector dosage, frother type and dosage, and pH varied to determine the optimum experimental conditions. The diatomite sample and products from flotation tests were characterized using scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX). The results of the flotation tests indicate that there is less AC on the surface of diatomite after flotation compared to the feed, while the AC present in diatomite pores remains unchanged. Additionally, Fourier transform infrared spectroscopy (FT-IR) was employed to study the mechanism of interaction between reagents and minerals.

 

Key words: diatomite; azodicarbonamide; froth flotation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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