Enhanced flotation performance and adsorption mechanism on (0 0 2) crystal plane of fine muscovite powder

Ren, Liuyi; Ma, Tianyi; Bao, Shenxu; Zhang, Yimin; Jiao, Ziwei; Zhang, Xinyu

doi:10.1016/j.apt.2023.104317

Cited by 3 publications

(1 citation statement)

References 29 publications

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“…As can be seen from the XRD results , the XRD patterns of the BM0 group without the mica sand ha ve no diffraction peak at about 9°. For the other seven groups containing the sand with 4% mica, an obvious diffraction peak can be observed at about 9°, which corresponds to the previous research proving the diffraction peak near 9° of the Muscovite [62]. Figure 11 shows that the mica exists stably in cement-based materials.…”

Section: Xrdsupporting

confidence: 82%

Study on the Effect of Interfacial Modification on the Properties of Super Standard Mica Sand Cement-Based Materials

Liu,

Yang,

Jiang

et al. 2024

Buildings

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Mica is a harmful substance in sand and occurs frequently. The application of super standard mica sand is a difficult problem in large-scale engineering. In this work, the effects of an interface modifier, mineral admixture, and a curing system on the properties of cement-based materials with super standard mica sand were studied. The strength of cement-based materials linearly decreases with the mica content in sand. When the mica content in sand exceeds 6%, the compressive strength of mortar and concrete at 28 d decreases by more than 22.3% and 33.5%, respectively. By adding the silane coupling agent (SCA) of 50% mica mass and curing in natural conditions, the compressive strength of mortar increases by 10.9%. The cement-based materials with the SCA are more suitable for curing in natural conditions, and the performance of the SCA will not be affected by adding appropriate amounts of mineral admixture. The drying shrinkage strain of the concrete, with the sand containing high mica content modified by SCA, is reduced by 10.5%, and the diffusion of chloride ions in concrete is reduced. The XRD results show that the addition of the interfacial agent does not change the hydration products. The MIP and SEM results show that the SCA can form a bridge structure between the hydration products and the mica, improve the bonding strength of the interface zone, and reduce the number of harmful pores.

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Section: Xrdsupporting

confidence: 82%

Study on the Effect of Interfacial Modification on the Properties of Super Standard Mica Sand Cement-Based Materials

Liu,

Yang,

Jiang

et al. 2024

Buildings

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Interaction mechanism between various collectors and nonmetal components of waste printed circuit boards

Yao,

He,

Yang

2024

Advanced Powder Technology

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Influence of SHMP Concentration on Rutile Flotation in BHA System: Guiding the Separation of Rutile and Hornblende

Song,

Ren,

Bao

et al. 2024

Langmuir

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Sodium hexametaphosphate (SHMP) is a common depressant used in rutile flotation, especially for silicate gangue minerals such as amphibole. However, the experiment found that in the benzyl hydroxamic acid (BHA) system, SHMP of small concentrations affected the flotation recovery of rutile. In this work, the influence mechanism of SHMP concentration on the flotation of rutile in the BHA system was studied by flotation test, adsorption capacity determination, ζ potential determination, infrared spectrum analysis, and X-ray photoelectron spectroscopy (XPS) analysis. The test results show that in the BHA system, SHMP chemically adsorbs on the rutile surface, hindering the effect of BHA on the rutile surface, and hydrolyzes in the pulp to form hydrophilic colloids. When the concentration of BHA is 40 mg/L and that of SHMP is 6 mg/L, the effect of SHMP is the most obvious. However, with the increase of SHMP concentration to 8−10 mg/L, its effect on the recovery of rutile became very weak. When the concentration of SHMP is lower than 6 mg/L, the SHMP anion-metaphosphate ion (SHMP − ) interacts with the hydrophilic colloidal particles on the surface of rutile, which affects the combination of BHA and the active sites on the surface of rutile, thus affecting the recovery of rutile. When the concentration of SHMP continues to increase, the SHMP − adsorbed on the rutile surface is removed from the rutile surface due to the charge repulsion and the competitive adsorption of BHA.

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Enhanced flotation performance and adsorption mechanism on (0 0 2) crystal plane of fine muscovite powder

Cited by 3 publications

References 29 publications

Study on the Effect of Interfacial Modification on the Properties of Super Standard Mica Sand Cement-Based Materials

Study on the Effect of Interfacial Modification on the Properties of Super Standard Mica Sand Cement-Based Materials

Interaction mechanism between various collectors and nonmetal components of waste printed circuit boards

Influence of SHMP Concentration on Rutile Flotation in BHA System: Guiding the Separation of Rutile and Hornblende

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