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(PDF) Assessment of Gold Mine Tailings as Based …
The gold mine tailings-based geopolymer binder (MTGB) was produced using a combination of water glass solution (WGS) to 10 molar of sodium hydroxide (NaOH) solution ratio and alkaline solution (AS ...
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Utilizing Mine Tailings as Substitute Construction ...
Mine tailings (MT) have been used in previous studies as substitute construction material to recycle waste products, especially in hollow blocks and bricks production and as masonry mortar. This study investigated the use of Philex copper-gold mine tailings (PCGMT) in roller compacted concrete (RCC) production, a mining waste material consisting of finely grinded siliceous particles was ...
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Calcination of Calcium Sulphoaluminate Cement …
Pyrite-rich cyanide tailings (CTs) are industrial hazardous solid wastes arising from the gold mining industry. Every year, hundreds of millions of tons of cyanide tailings are produced and discharged to tailings dams. It is of great significance to dispose of …
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(PDF) Utilization of tailings in cement and concrete: A review
If the tailings as. one of the solid wastes are used in cement and concrete, it not only helps to reduce the storag e amount of tailings, but also is bene cial to the sustainable development of ...
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5 methods of gold mine tailings treatment and ...
· At present, the common gold mine tailings treatment methods and comprehensive utilization mainly include the following ways. 1. Re-selection of gold mine tailings. The gold content in gold mine tailings is generally 0.2-0.6g/t. Due to the …
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Solidification/stabilization of gold mine tailings using ...
· CSAB cement and gypsum were fully mixed together, and the powdered gold mine tailings were added to the mixture. – After a homogeneous powder mixture was achieved, it was fully mixed with water and sand. The standard sand was added to the mixture after 0.5 min of mixing. –
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Use of gold mill tailings in making bricks: a feasibility ...
· The cement—tailings bricks were cured for different periods and their corresponding compressive strengths were determined. The bricks with 20% of cement and 14 days of curing were found to be suitable. The soil—tailings bricks were sun-dried and then fired in a …
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Micropore Structure of Cement-Stabilized Gold …
Mine tailings have often to be stabilized by mixing them with cementing agents. In this study, the pore structure of gold tailings stabilized with Portland cement was evaluated by means of mercury intrusion porosimetry. The investigation was conducted on samples …
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Micropore Structure of Cement-Stabilized Gold …
Mine tailings have often to be stabilized by mixing them with cementing agents. In this study, the pore structure of gold tailings stabilized with Portland cement was evaluated …
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Use of cemented paste backfill in arsenic-rich tailings ...
Effluents from the gold extraction were treated with Fe2 (SO4)3, with the aim to form stable As-bearing Fe-precipitates (FEP). The use of the method called cemented paste backfill (CPB) is sometimes suggested for the management of tailings. In CPB, tailings are commonly mixed with low proportions (3 - 7 %) of cement and backfilled into ...
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(PDF) Use of Gold Mine Tailings in Production of Concrete ...
The proportions for 20% and 30% gold mine tailings based on their loose concrete containing river sand, gold mine tailings and 2 their combinations with water cement ratio and percentage of Superplasticiser is shown in Table 3. 4.3 Workability studies Mixing of concrete was done by …
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Potential utilization of artisanal gold-mine tailings as ...
· Chemical compositions of gold-mine tailings. The chemical compositions of mine tailings shown in Table 1 indicate that SiO 2 is the most abundant component of the samples, which varied from 52.2 to 77.3% by weight. Although all samples also contain Al 2 O 3, CaO and Fe 2 O 3, they are present in variable amounts (Table 1).The samples also contain minor to trace amounts of K 2 O, TiO 2, MnO, …
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Preparation of Portland Cement with Gold Ore Tailings
· This study investigated the use of copper-gold mine tailings from Tailings Pond number 2 of Philex Mining Corporation in Padcal, Benguet as fine aggregates or as substitute to sand in roller compacted concrete (RCC) ... least or equal to those of concrete made …
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Effect of Partial Replacement of Natural Sand With Gold ...
· (10%, 20% and 30%) of river sand by gold mine tailings. C. Gold mine tailings Tailings are one of the primary waste products of mining operations. They are made of fine grained particles of the parent rock from which the ore is extracted. The characteristics of tailings depend upon the …
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Utilization of gold tailings as an additive in Portland cement
The results indicated that gold tailings up to 25% in clinker could be beneficially used as an additive in Portland cement production. It is suggested that the gold tailings used in the cement are ...
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Beneficiation of Barberton gold mine tailings: The effect ...
· tailings are eligible for mortar aggregate and the optimum ratio of gold tailings is 5%. The micropore structure of cement-stabilized gold mine tailings was studied by Lee and Shang (2018). The samples were prepared with different fractions of tailings and cement, cured at elevated temperatures, and activated addition on chemical (CaCl 2
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Experimental research on the utilization of gold tailings ...
Gold tailings (GT) are solid wastes produced during the extraction of gold ore, which contain sulfates, heavy metals, and abundant useful minerals. The production of gold is accompanied with a large number of GT discharge. ... Magnesium phosphate cement (MPC) is green-sustainable cement made by magnesia (MgO) and soluble phosphate. NH 4 H 2 PO ...
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Solidification/stabilization of gold mine tailings using ...
· Sustainable cement Green concrete abstract In this study, calcium sulfoaluminate-belite cement (CSAB) was used to stabilize gold mine tailings, which are challenging materials to effectively immobilize due to high heavy metal and sulfate content. The hydration of CSAB cement yields ettringite and monosulfate with good capability for immobilizing
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Hydration kinetics and properties of cement blended with ...
The results proved that the clinker phases of the cements produced with different addition of gold ore tailings are 3CaO·SiO2, 2CaO·SiO2, 3CaO·Al2O3, and 4CaO·Al2O3·Fe2O3, and their hydration ...
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Study of Gold Mine Tailings Utilization as Fine Aggregate ...
strength of concrete made from tailings Tailings grain size varies from medium to cement and type 1 Portland cement, fine fractions. This variation allows adding Tailing cement, Type 1 Portland cement. "packing density" mortar, so the use of tailings potential to raise the strength and Based on the research of Lationo, et density of mortar.
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Utilizing Mine Tailings as Substitute Construction ...
· This study investigated the use of copper-gold mine tailings from Tailings Pond number 2 of Philex Mining Corporation in Padcal, Benguet as fine aggregates or as substitute to sand in roller compacted concrete (RCC) ... least or equal to those of concrete made …
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Utilization of Mine Tailings As Partial Cement Replacement
Mine tailings from two different mines Zinkgruvan (Sweden) and Nalunaq (Greenland) were both tested as 5 and 10% cement replacement. Addition of mine tailings in the fresh concrete mix affected the consistency negatively increasing the water demand, but an accelera tion of hydration reactions were seen for both tailings.
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Micropore Structure of Cement-Stabilized Gold Mine …
the cement is generally smaller than that of the gold tailings, as shown in Figure1. The specific gravity and specific surface of the Portland cement are 3.17 and 0.367 m 2 /g, respectively.
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Tailings dewatering with increased filtration rates and ...
4.4 Exemplary references of tailings dewatering with the Boozer vacuum disc filter 4.4.1 Dewatering of gold/copper tailings The first Boozer vacuum disc filter for tailings dewatering started operation in 2010 at the Chelopech mine in Bulgaria where the tailings are used for mine backfill (Figure 3). For this application, a Boozer L4 disc
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Obtaining A Cementitious Geopolymer From Gold …
· KEYWORDS Cementitius, geopolymer,gold, mining, tailings ----- Date of Submission: 21-02-2018 Date of acceptance: 08-03-2018 ----- I. INTRODUCTION The availability of raw materials and its ease of production and application have made Portland cement
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Stabilization and solidification of tailings from a ...
· Stabilization and solidification of tailings from a traditional gold mine using Portland cement. Ranno Marlany Rachman†, Ayi Syaeful Bahri, Yulinah Trihadiningrum. Department of . Environmental Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia. Abstract. The …
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