Highly crystallized glass-ceramics from high content gold tailings <i>via</i> a one-step direct cooling method

Jiang, Ke; Wu, Wei; Ren, Boyong; Li, Meng; He, Jiaxing; Xu, Enze; Liu, Junwu; Tong, Guoqing; Zhong, Hao; Jiang, Yang

doi:10.1039/d2ra01012g

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…Micro-crystal stones are inorganic engineering material with excellent abrasive resistance and chemical resistance, which can be regarded as a replacement of traditional natural stone, so as to be used in metallurgy, power generation industry and others. 17,18 BFS mainly contains SiO 2 , Al 2 O 3 , CaO and MgO, which are also the main components of micro-crystal stones. Therefore, it is feasible to prepare the micro-crystal stones from BFS.…”

Section: Introductionmentioning

confidence: 99%

Preparation of micro‐crystal stones from molten titanium slag by “one‐step” cooling method

Ding

Zhang

Qiu

et al. 2023

Int J Applied Ceramic Tech

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Medium-titanium blast furnace slag (MTS) is a major solid waste in the smelting process of vanadium and titanium magnetite. The moderate TiO 2 content in MTS makes it unsuitable for titanium extraction and difficult to be used as cement mixing material in large quantities. In this study, the molten MTS was utilized to prepare micro-crystal stones by a "one-step" cooling method, and the TiO 2 in the slag was used as a nucleating agent. The effects of the cooling process and MTS utilization on the slag structure, crystallization characteristics, and physical properties of the micro-crystal stones were investigated. The results show that when the utilization of MTS is 100 wt%, the main crystalline phase of the microcrystal stones is akermanite, the compressive strength and micro-hardness are 142.5 MPa and 696.9 kgf⋅mm −2 . When the utilization of MTS is 90 wt%, the main phases of microcrystalline stone are augite and akermanite, and the compressive strength rises to 194.8 MPa. Hence, through proper cooling control, the preparation of micro-crystal stones with good performance by using molten MTS as raw material will have considerable economic value.

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Section: Introductionmentioning

confidence: 99%

Preparation of micro‐crystal stones from molten titanium slag by “one‐step” cooling method

Ding

Zhang

Qiu

et al. 2023

Int J Applied Ceramic Tech

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Multi‐component coupling synergistic effect of resourced gold tailings on intumescent flame‐retardant polypropylene

Wang,

Li,

Yan

et al. 2024

Vinyl Additive Technology

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Addressing the challenge of resource utilization of gold tailings. A high performance flame‐retardant fillers (K‐GTF) were prepared from gold tailings (GTF) by coupling and condensation for application to intumescent flame‐retardant polypropylene (PP). K‐GTF enhances the flame‐retardant, thermal stability, smoke suppression and mechanical properties of flame‐retardant PP through synergistic approach. The results show that K‐GTF demonstrates good flame‐retardant synergism, with PP composites containing 3% additive (PP/G3) exhibiting substantial flame‐retardant and smoke suppression characteristics. Notably, PP/G3 boasts a limiting oxygen index (LOI) of 36.1%, which is substantially higher than the 33.6% LOI of the flame‐retardant PP without added K‐GTF (PP/G0). Furthermore, the peak heat release rate (PHRR), peak smoke production rate (PSPR), total heat release rate (THR), and total smoke production (TSP) of PP/G3 were decreased by 32.5%, 26.9%, 31.6%, and 21.5%, respectively, as compared to PP/G0. According to the synergistic mechanism analysis, K‐GTF exerts a multi‐component coupling synergistic effect, which promotes the production of phosphorus‐rich cross‐linking structures in flame‐retardant PP materials during the combustion, thereby promotes the formation of stable, dense and intumescent char to further enhances the flame‐retardant performance of the PP materials. In terms of mechanical effects, the introduction of K‐GTF alleviates the issue of a substantial decline in mechanical properties typically caused by flame retardants in PP materials. This indicates that K‐GTF improves the compatibility between the flame retardants and the PP matrix, thereby enhancing the mechanical properties of the flame‐retardant PP materials.Highlights Successfully synthesis a flame‐retardant synergist (K‐GTF). K‐GTF has good synergistic flame‐retardant effect. K‐GTF substantially enhances char formation and thermal stability of flame‐retardant PP. K‐GTF exerts a multi‐component coupling synergistic effect. K‐GTF enhances the compatibility between the PP matrix and the flame retardants.

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Spodumene glass-ceramics with low thermal expansion coefficient prepared using gold tailings

He,

Wang,

Gao

et al. 2024

J Aust Ceram Soc

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Highly crystallized glass-ceramics from high content gold tailings via a one-step direct cooling method

Abstract: Highly crystalline glass-ceramics were successfully manufactured via a one-step direct cooling method using Shuangqishan (Fujian, China) gold tailings as raw materials.

Cited by 4 publications

References 31 publications

Preparation of micro‐crystal stones from molten titanium slag by “one‐step” cooling method

Preparation of micro‐crystal stones from molten titanium slag by “one‐step” cooling method

Multi‐component coupling synergistic effect of resourced gold tailings on intumescent flame‐retardant polypropylene

Spodumene glass-ceramics with low thermal expansion coefficient prepared using gold tailings

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