http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Wanzhong Yin (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Effect of surface roughness on the flotation separation of hematite from fine quartz
Zhanglei Zhu,Zhen Li,Wanzhong Yin,Bin Yang,Ningning Zhang,Jinzhou Qu,Songjiang Chen,Jing Chang,Yuexian Yu,Lijun Liu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.109 No.-
Although the effect of surface roughness on the floatability of a single mineral has been investigatedextensively, a systematic study for the effect of surface roughness on the flotation separation of differentminerals, e.g., flotation recovery, has never been dwelled. To fulfill this gap, in this study, the effect of surfaceroughness on the flotation separation of hematite from quartz was investigated with a series ofexperiments and detections. Micro-flotation experiments demonstrated that hematite particles withhigher roughness resulted in higher recoveries for both hematite and quartz, but the improvement ofhematite recovery was more significant, which promoted the flotation separation of hematite fromquartz with a higher separation index (SI). Adhesion force measurements revealed that after interactingwith 125 mg/L sodium oleate at pH 9, increasing nano-scaled roughness improved the hydrophobicity ofhematite surface, and reduced the adhesion force of water droplet on hematite surface. Scanning ElectronMicroscope – Energy Dispersive Spectrometer observations confirmed that increasing nano-scaled roughnessincreased the number of fine quartz particles coating on hematite surface. Combined with the analysisof adhesion of water droplet and observation of fine particles coating on hematite surface, the effectof surface roughness on minerals flotation separation could be better understood.
-
Selective flotation of brucite from calcite using HEDP-4Na as an inhibitor in a SDS system
Xiufeng Gong,Jin Yao,Bin Yang,Yafeng Fu,Yulian Wang,Wanzhong Yin 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.125 No.-
In this study, the selective adsorption of (1-hydroxyethylidene) bis-phosphonic acid tetrasodium salt(HEDP-4Na) on a calcite surface and its impact on the separation of brucite were examined using amicroflotation test, contact angle measurement, zeta potential measurement, X-ray photoelectron spectroscopy(XPS), and atomic force microscopy (AFM). The microflotation test revealed that HEDP-4Naselectively inhibited calcite from brucite at pH 10.5 in the sodium dodecyl sulfonate (SDS) system. Under the dosage condition of 180-mg/L HEDP-4Na, a single-mineral floating difference of 73.79% wasachieved between brucite and calcite. The contact angle measurement revealed that HEDP-4Na considerablyreduced the contact angle of calcite in the SDS system but only weakly affected the contact angleof brucite. Zeta potential analysis and Fourier transform infrared spectroscopy demonstrated that theHEDP-4Na adsorption interfered with the SDS adsorption on the surface of calcite; however, theHEDP-4Na adsorption had little effect on the SDS adsorption on the surface of brucite. XPS and AFM analysesdemonstrated that the selectivity and effect of HEDP-4Na on calcite were considerably stronger thanthose on brucite and the HEDP-4Na adsorption on the calcite surface was significant and strong.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
