· Cementitious backfill, an engineered material forming of cement, tailings and water, plays a key role in the mining industry. It is a vital element of mines' design for assisting the stabilization of mining-induced openings and the safe disposal of processing tailings. The quality and characteristics of cementitious backfills are remarkably influenced by its intrinsic (i.e., …
· Abstract One of the advantages of cement and the cement concrete industry in sustainability is the ability to utilize large amounts of industrial solid wastes such as fly ash and ground granulated blast furnace slag. Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries.
the copper industry, was highlighted by Boger8 when he submitted that about 230,000 tons of dry copper tailings is produced daily at the Escondida copper mine in Chile. According to Yu 9et al. as cited in Huang et al., more than 2.4 billion tons of copper tailings can be presently found in China. Similar or higher volumes of copper tailings may ...
The large production of tailings has caused soil, water and air pollution and serious potential safety hazard. The composition, particle morphology, particle size distribution of the silica-calcium tailings are investigated to assess the feasibility of using it in concrete in this paper. The silica-calcium tailings are mainly composed of quartz, calcite and dolomite.
· As a result, the utilization of tailings in cement and concrete will be good for the environment both in the solid waste processing and virgin materials using in the construction industry. Mineral ...
Key words: tailings, Portland cement, heavy metals, unconfined compression. 1. INTRODUCTION Tailings are the waste materials (byproducts) of the mining industry. Tailings contain all other constituents of the ore but the extracted metal, among them heavy metals and other toxic substances that are either added to the tailings in the milling ...
· Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries. This paper reviews the potential utilization of tailings as a replacement for fine aggregates, as supplementary cementitious materials (SCMs) in mortar or concrete, and in the production of cement clinker.
· tailings, placed underground after adding a binder such as cement, or less commonly deposited into rivers or offshore (though the latter is increasingly limited due to jurisdictional and/or owner restrictions on the use of such practices). The approach taken in the design, construction, operation and
· Application of coal tailings as pozzolanic materials in cement industry: Thermal: After thermal activation process, coal exhibited a relatively good …
· Chile: Cementos Polpaico has submitted an environmental impact study for a US$60m upgrade of its Cerro Blanco cement plant in Tiltil, near Santiago. Business News America has reported that the proposed work consists of the installation of a new precalciner, an expansion to its four limestone quarries and the establishment of a new filtered tailings deposit …
· In 2008, the global cement production stood at 2.8 billion tons, up to 3.4 % from the previous year according to World Bank. After 4 years, China witnessed its cement production up to 2.18 billion tons accounting for more than 60 % of global production according to China Cement Association (CCA 2013).The Chinese cement demand is anticipated to double at least by …
· Large Volume Inorganic Chemicals –Solid and Others industry LVIC-S Large Volume Organic Chemical Industry LVOC Management of Tailings and Waste-Rock in Mining Activities MTWR Manufacture of Glass GLS Manufacture of Organic Fine Chemicals OFC Non Ferrous Metals Industries NFM Production of Cement, Lime and Magnesium Oxide CLM
· The initial test carried out by researcher Ahmad Rteil involved replacing 10% and 20% of a cement mixture with ZEN's tailings material and after 28 days, the results showed the 10% replacement ...
· Determining a reasonable backfilling slurry parameters is a big challenge for mining industry. The solid content (SC) and cement-to-tailings ratio (c/t) are two main factors on mechanical properties of cemented coarse tailings backfill (CCTB). In this paper, an experimental study is conducted to investigate the effect of c/t and SC on the uniaxial compressive strength …
· which includes tailings produced from mineral processing activities is among the major concerns faced by the mining industry (Yellishetty et al., ). The recourse of trade of natural fine aggregate/cement with industrial by-product such as Base Metal Tailings(BMT) propound
· The mixing materials of cement Actually, some tailings are capable of mixing into cement, such as the tailings remained from the vanadium titano-magnetite. In addition, the waste rocks or tailings containing many amorphous materials can be also used as active mixing materials. 6. Corrective raw materials used in the cement clinker
Mine tailings have shown a capacity as a raw material for the construction industry or a substitution for previous materials to produce the cement. It is applied in some specific environments such as offshores or massive projects like large bridges and tunnels. However, the cement industry has caused a variety of environmental issues.
· The initial test carried out by researcher Ahmad Rteil involved replacing 10% and 20% of a cement mixture with ZEN's tailings material and …
cement and concrete industry. The aim of this review is ... concrete industry have discussed how the tailings are dried.OnlyOnuaguluchiet al. [53,54]describesthatthe ...
One of the advantages of cement and the cement concrete industry in sustainability is the ability to utilize large amounts of industrial solid wastes such as fly ash and ground granulated blast furnace slag. Tailings are solid wastes of the ore beneficiation process in the extractive industry and are available in huge amounts in some countries. This paper reviews the potential …
· Australian mining industries are probably leaders in the use of paste technology (Rankine and Sivakugan, 2007). Cemented paste tailings (CPT) is a pumpable, flowable, non-Newtonian fluid generally consisting of mine tailings, water and ordinary Portland cement. It is normally prepared from dilute
Along with the use of cemented paste as a backfill in underground spaces, the use of mineral processing wastes in the construction industry or as a substitute for cement is one of the new approaches to mineral tailings management. It is worth noting that the cement industry is facing crucial environmental issues.
Tailings are both a safety issue and a huge financial burden to miners. But to cement and concrete producers they might hold a massive reservoir of untapped potential. With a shared ambition to reduce the environmental footprint of both cement and mining operations, FLSmidth is well-positioned to support its customers in turning mine tailings into value-added products, …
An end to tailings dams. With a breakthrough in filtration technology, FLSmidth is proving that a full dry stacked tailings solution is technologically feasible for large scale operations – and that the recovery of up to 95% of process water is economically competitive …
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