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Wyszukujesz frazę "Qian, Yupeng" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Reducing entrainment of sericite in fine flaky graphite flotation using polyaluminum chloride
Autorzy:
Qiu, Yangshuai
Zhang, Lingyan
Sun, Kangkang
Li, Ye
Qian, Yupeng
Powiązania:
https://bibliotekanauki.pl/articles/109740.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fine flaky graphite
sericite
polyaluminum chloride (PACl)
dispersion
aggregation
Opis:
Polyaluminum chloride (PACl) was introduced as a flocculant to reduce the entrainment of sericite gangue in fine flaky graphite flotation. The dispersion and aggregation behaviours of sericite and fine flaky graphite in the absence and presence of PACl were studied by settling experiments and verified by optical microscope images. Results of batch flotation tests for artificial mixtures indicated that the addition of PACl decreased the recovery of sericite gangue and the water recovery. Zeta potential measurements, FTIR and XPS analyses revealed that PACl selectively aggregated sericite particles in terms of charge neutralization and precipitate enmeshment.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1108-1119
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective flotation of witherite from calcite using potassium chromate as a depressant
Autorzy:
Qiu, Yangshuai
Zhang, Lingyan
Jiao, Xuan
Guan, Junfang
Li, Ye
Qian, Yupeng
Powiązania:
https://bibliotekanauki.pl/articles/110784.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
witherite
calcite
selective flotation
sodium oleate
potassium chromate
Opis:
Witherite has been widely used as an industrial and environmental source of barium, with calcite being the primary associated carbonate mineral. However, few studies have been conducted to effectively concentrate witherite from barium ores. In this work, with the treatment of potassium chromate (K2CrO4) and sodium oleate (NaOL), witherite was selectively separated from calcite through selective flotation at different pH conditions. In addition, contact angle, Zeta potential, adsorption and X-ray photoelectron spectroscopy measurements were performed to characterize the separation mechanisms. The results demonstrated that NaOL had a strong collecting ability for both witherite and calcite; nevertheless, witherite could be effectively selected from calcite with the highest recovery at pH 9 in the presence of K2CrO4. From the XPS measurements, NaOL and K2CrO4 were found to be primarily attached to the surfaces of witherite and calcite through chemisorption. The presence of K2CrO4 on the surface of calcite adversely influenced the NaOL adsorption, which could make the flotation separation efficient and successful.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 2; 565-574
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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