Study on the foam behavior of amine reagents adsorbed at gas-liquid and gas-liquid-solid interfaces

• Autorzy: Shang Kaixuan , Xie Weimin , He Dongsheng , Benzaazoua Mostafa , Chen Fei , Aleksandrova Tatiana N.

Identyfikatory

DOI

10.37190/ppmp/130997

• Języki publikacji: EN

Abstrakty

EN

Alkyl amines are widely used as cationic collectors in flotation. In this work, the flotation foaming behaviors of alkyl amines, including dodecylamine (DDA), di-n-hexylamine (DHA), octadecylamine (ODA), oleylamine (OLA), in the presence or absence of quartz were investigated by a new approach, “foam analyzer”. The effects of pH, reagent dosage, concentration of quartz powder, and particle size on foaming property and stability of bubble were explored, and the physical model of foam structure evolution was established. The adsorption mechanism of amines on quartz surface was studied from molecular structure, surface tension, zeta potential, charging mode, and adsorption form. The results show the foam stability of four amine collectors as follows: OLA > ODA > DHA > DDA. In the range of pH=6-10, the foam properties of the four amines are better. Under the same conditions, the longer carbon chain of aliphatic amine, the more unsaturated bonds, the fewer hydrogen atoms of the amine group, and the corresponding foam properties are better. When the concentration of quartz powder is 8-10%, the foaming and stability of the foam of four kinds amines are the best, The finer quartz powder particle size, the more stable the amine foam and the stronger the foamability.

Słowa kluczowe

EN

foam; amine kind; stability; foaming property; foam structure

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2021
• Tom: Vol. 57, iss. 1
• Strony: 192--205
• Opis fizyczny: Bibliogr. 58 poz., rys., wykr.

Twórcy

autor

Shang Kaixuan

• Central South University
• Wuhan Institute of Technology

autor

Xie Weimin

• Central South University
• Wuhan Institute of Technology

autor

He Dongsheng

• Wuhan Institute of Technology
• Key Laboratory of Rare Mineral, Ministry of Land and Resources, Wuhan

autor

Benzaazoua Mostafa

• Université du Québec en Abitibi-Témiscamingue (UQAT)

autor

Chen Fei

• Wuhan Institute of Technology

autor

Aleksandrova Tatiana N.

• Saint-Petersburg Mining University

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).