اتصل

هاتف

+0086-371-86162511

عنوان

تشنغتشو ، الصين

البريد الإلكتروني

[email protected]

cement industry tailings

Utilization of tailings in cement and concrete: A review

The aim of this review is to re-assess the potential utilization of tailings for cement clinker production and the opportunities and challenges of using tailings as aggregate or supplementary cementitious materials (SCMs) in cement and concrete, This paper reviews the potential utilization of tailings as a replacement for fine aggregates, as supplementary cementitious Utilization of tailings in cement and concrete: A review

احصل على السعر

A review on different methods of activating tailings to

A comprehensive critical review about mine tailings reuse in concrete industry was conducted. • The activation processes could be enhanced the application cement and concrete industry. The aim of this review is tore-assessthepotentialutilizationoftailingsforcement Utilization of tailings in cement and concrete: A review

احصل على السعر

Utilization of tailings in cement and concrete: A review Semantic

Utilization of tailings in cement and concrete: A review @article{Gou2019UtilizationOT, title={Utilization of tailings in cement and concrete: A Introduction The mining industry is growing rapidly in the world due to the increasing need for raw materials, and this industry is the world's largest waste Utilization of tailings in concrete products: A review

احصل على السعر

A review of additives used in the cemented paste tailings

In this paper, the usage of several chemical additives was studied, which can strengthen the properties of cemented paste tailings during backfilling operation. It It is clear that the fineness of the tailings exceeds that of common cement constituents, which usually have a d50 of ∼10 μm. The fineness results in a high specific Transformation of mine tailings into cement-bound

احصل على السعر

Utilization of tailings in cement and concrete: A review DOAJ

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 This effect occurs as a result of the roughness and coarse aggregate occlusion of the iron ore tailing particles, which greatly enhances cohesion in the tailing mixes. Additionally, compared to natural sand, iron ore tailings absorb more water. As a result, the tailing mixtures have poor liquidity.Concrete Made with Iron Ore Tailings as a Fine Aggregate: A Step

احصل على السعر

A review of additives used in the cemented paste tailings

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.Sustainability in the construction and cement industry may have points in common with waste disposal of other industries at important levels, such as the copper mining industry. The use of tailings as a cement replacement is one alternative to reduce the impact of the production of cement and management of the disposal of tailings into Development of a new supplementary cementitious material from the

احصل على السعر

Utilization of tailings in concrete products: A review

The mining industry is growing rapidly in the world due to the increasing need for raw materials, and this industry is the world's largest waste generator. Approximately 65–80 billion tons of waste are generated annually after mining operations. Tailings account for ∼ 10–15 billion tons of this total; the remainder is waste rock [1].This part of tailings, which is known as mature fine tailings (MFT) in the oilsands industry, contains approximately 30 wt% of solids and 83 v.% (volume percent) of water (Vedoy and Soares, 2015). Before it can be used in CPB, the tailings needs to be densified to produce dewatered mine tailings (DMT) with a solids content of 70–85 wt% Cemented paste backfill for mineral tailings management: Review and

احصل على السعر

Feasibility of iron-rich ore tailing as supplementary cementitious

The structures with the addition of 10% and 20% of iron ore tailings had about the same results as the structures of soil–cement with no addition of iron ore tailings.Tailings deposits tend to be located in rural areas or near marginalized communities, such as indigenous communities. The Global Industry Standard on Tailings Management recommends that "a human rights due diligence process is required to identify and address those that are most at risk from a tailings facility or its potential failure."Tailings

احصل على السعر

Utilization of Iron Ore Tailings as Raw Material for Portland Cement

Mei Yang. We report a type of high-magnesium and low-silicon iron ore tailings (IOT) utilized as a raw material replacing clay to produce cement clinkers by conventional sintering processThe filling mining method is an effective method for controlling ground stress and preventing surface subsidence in the mining field during exploitation of underground resources. Tailings can be utilized as the filling material, so as to realize the reuse of industrial waste. However, utilization of the traditional Portland cement as the cementing Experimental study on tailings cementation by MICP technique

احصل على السعر

Preparation of composite micro-slag based on the application of

Phosphogypsum-slag based cement (PSBC) has a great potential in tailings backfill because of low cost and CO 2 emission in comparison with Portland cement. However, slow early hydration was often observed, and this problem was generally solved by adding cement clinker, which could provide alkalinity to hasten the hydration of An example of the latter is the Global Industry Standard on Tailings Management, launched through a collaborative initiative of the International Council on Mining & Metals (ICMM) and the United Nations Environmental Program (UNEP) (GlobalTailingsreview and Global Industry Standard on, 2020).Transformation of mine tailings into cement-bound

احصل على السعر

Feasibility study on utilization of copper tailings as raw meal and

(1) 20.31 wt% copper tailings as raw meal and 15 wt% copper tailings as addition was used to prepare copper tailings ordinary Portland cement. 35.31 wt% copper tailings were converted into low-cost and low-carbon cement that meets PO 42.5 grade.(2) Copper tailings cement was evaluated in terms of environmental and economic aspects.The cement industry has for some time been seeking alternative raw material for the Portland cement clinker production. The aim of this research was to investigate the possibility of utilizing iron ore tailings (IOT) to replace clay as alumina-silicate raw material for the production of Portland cement clinker. For this purpose, two Utilization of Iron Ore Tailings as Raw Material for Portland Cement

احصل على السعر

Coal-Mining Tailings as a Pozzolanic Material in Cements Industry

Considering that the chemical composition of some tailings mainly contain SiO 2,Al 2 O 3,CaO that is similar to cement [18,19], the use of tailings as a cement-replacement has become aThe reuse of tailings as a replacement for cement not only resolves the environmental concerns of tailings disposal, but also reduces the cement consumption in the construction industry [20], [21]. Researchers have found that addition of suitable amounts of tailings could improve the mechanical properties and durability of concrete.Mechanical activation of lead–zinc mine tailings as a substitution

احصل على السعر

Utilisation of iron ore tailings as aggregates in concrete

Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water–cement ratio of 0.5.The generation of enormous volumes of mine-tailing waste is standard practice in the mining industry. Large quantities of these tailings are also sources of kaolinite-rich materials that accumulate in slag heaps, causing significant environmental degradation and visual impacts on the landscape. The consequences of coal refuse dumped in slagheaps calls for the Coal-Mining Tailings as a Pozzolanic Material in Cements Industry

احصل على السعر

Coupled Effect of Cement-to-Tailings Ratio and Solid Content on

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 Nevertheless, to our knowledge, this is the first study that assess the cement substitution of IOT prepared by acid leaching to reduce the Fe 2 O 3 content (∼2%), to produce sustainable cementitious materials. Moreover, this approach promotes the recovery of a significant portion of iron (≈95%), in the form of ferric liquor.Application of leached iron ore tailings to produce sustainable cements

احصل على السعر

Iron ore tailings as a supplementary cementitious material in the

DOI: 10.1016/j.jclepro.2020.123260 Corpus ID: 224863954; Iron ore tailings as a supplementary cementitious material in the production of pigmented cements @article{Magalhes2020IronOT, title={Iron ore tailings as a supplementary cementitious material in the production of pigmented cements}, author={Luciano Fernandes de

احصل على السعر

<< Previous:كسارة فكية من جرانيت Bmg مصنوعة من العراق
>> Next:الرطب طحن الاسمنت آلة غرامة

حقوق النشر © 2004-2020 بواسطة China Liming Heavy Industry Science and Technology Co.Ltd. جميع الحقوق محفوظة