Characterization of material sintered from the final flotation waste and zeolitic tuff

IF 1.4 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS Science of Sintering Pub Date : 2022-01-01 DOI:10.2298/sos2201059c

M. Cocić, M. Logar, V. Tasić, B. Matović, Milica Miletic-Svircev

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引用次数: 1

Abstract

The paper deals with the characteristics of synthesized glass-ceramics obtained by sintering a mixture of final flotation waste (FFW) with tuff at 1260?C for 7 h, followed by the annealing of pressed samples at 1080oC for 36 h. The experiments were done in order to find the possibility for the valorization of waste material (FFW). By thermal treatment of mixtures of T20 (20 % tuff, 80 % FFW) and T40 (40 % tuff, 60 % FFW) to a temperature of 1260oC over a period of 7 hours, is obtained glass-ceramics with dendritic structure. The synthesized glass-ceramics consists of two phases: iron oxide crystals (maghemite, magnetite, and hematite) and glass with an approximate ratio of phases 32/68 (T20) and 23/77 (T40), respectively. The relatively small shrinkage of the synthesized material (up to 7 %) enables reliable control when designing a given shape indicating that such glass-ceramics can be used as a basis for obtaining construction material. The synthesis of pressed samples of mixtures (T20 and T40) at 1080oC for 36 h produces glass-ceramics that have a high coefficient of sound attenuation, which indicates good acoustic insulating properties.

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浮选终废和沸石凝灰岩烧结材料的表征

本文研究了用浮选终废(FFW)与凝灰岩的混合物在1260℃下烧结制备的合成微晶玻璃的特性。将压下的样品在1080℃下退火36 h。实验是为了寻找废料(FFW)增殖的可能性。将T20(20%凝灰岩，80% FFW)和T40(40%凝灰岩，60% FFW)的混合物在1260℃的温度下热处理7小时，得到具有枝晶结构的微晶玻璃。合成的微晶玻璃由氧化铁晶体(磁铁矿、磁铁矿和赤铁矿)和玻璃两相组成，两相的比例分别为32/68 (T20)和23/77 (T40)。合成材料的相对较小的收缩率(高达7%)使设计给定形状时能够可靠地控制，这表明这种微晶玻璃可以用作获得建筑材料的基础。将混合物(T20和T40)在1080℃下压制36 h合成的微晶玻璃具有较高的声衰减系数，表明其具有良好的隔音性能。

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来源期刊

Science of Sintering 工程技术-材料科学：硅酸盐

CiteScore

2.50

自引率

46.70%

发文量

审稿时长

3.3 months

期刊介绍： Science of Sintering is a unique journal in the field of science and technology of sintering. Science of Sintering publishes papers on all aspects of theoretical and experimental studies, which can contribute to the better understanding of the behavior of powders and similar materials during consolidation processes. Emphasis is laid on those aspects of the science of materials that are concerned with the thermodynamics, kinetics and mechanism of sintering and related processes. In accordance with the significance of disperse materials for the sintering technology, papers dealing with the question of ultradisperse powders, tribochemical activation and catalysis are also published. Science of Sintering journal is published four times a year. Types of contribution: Original research papers, Review articles, Letters to Editor, Book reviews.