Recycling gold mine tailings into eco-friendly backfill …
Recycling gold mine tailings into eco-friendly backfill material for a coal mine goaf: Performance insights, hydration mechanism, and engineering applications. ... This outcome is the result of the low fly ash content and high tailings content. Overall, the specimens (i.e., M60–0.10–6:6 and M62–0.11–6:6) containing equal amounts of ...
اقرأ أكثر
Gold recovery from synthetic mine tailings leachate using …
8.75 billion tonnes of waste globally are created from gold mining annually (Earthworks and Oxfam America 2004).Solid waste streams generated from gold mining and processing, better known as mine tailings, still contain a significant mass of gold, with a global estimate of around 425 tonnes (Ogola et al., 2017).The U.S. Geological Survey estimates that …
اقرأ أكثر
Geotechnical Properties of Mine Tailings and …
The % fines (<75 micron) for gold, nickel, iron, and tantalum tailings are shown on Table 1. The nickel tailings tended to be finer grained (average 75% fines) than both iron (67% fines) and gold (58% fines). Tailings from a tantalum mining operation were …
اقرأ أكثر
Mechanical and fracture behaviors of compacted gold mine tailings …
For example, MTs with large clay content can be utilized to manufactured bricks by kiln firing under significantly high temperature ... Understanding the mode I fracture behaviors of the geopolymer made by alkaline activation of gold mine tailings. American Rock Mechanics Association (2021) Google Scholar [11]
اقرأ أكثر
Gold in Tailings
This paper discusses the mineralogical characterisation of gold lost in tailings and its metallurgical implications. The techniques used in characterising the un-recovered gold are also briefly …
اقرأ أكثر
Characterization and treatment of artisanal gold mine tailings
The tailings gold content is of about 1.8 mg/kg and the mercury content is of about 10 mg/kg. A remarkable feature of this solid waste is that the gold and mercury are both …
اقرأ أكثر
Treatment And Utilization Of Gold Mine Tailings
Skip to content. JXSC Machinery. Email Us +86- Home; Equipment. Gold Mining Equipment. Rotary Scrubber; Mobile Gold Wash Plant; ... Because the gold mine tailings are fine in particle size and contain mineral processing agents and metal ions, in the event of strong winds, especially from March to June in the dry season, the tailings ...
اقرأ أكثر
(PDF) Reprocessing of Gango Gold Mine Tailings …
The sulfur content of the tailings is at the average of 2.03%. The presence of sulfur may trigger a harmful environmental condition called acid mine drainage. ... Reprocessing of Gango gold mine ...
اقرأ أكثر
Assessing phytoremediation strategies for gold mine tailings…
This study evaluates the effectiveness of phytoremediation strategies in mitigating the environmental impacts of gold mine tailings through a bibliometric and systematic review. Utilizing the PRISMA methodology, 45 primary research articles were selected and analyzed, highlighting key rends and insights in phytoremediation research. The review spans over two …
اقرأ أكثر
Gold mining tailing: Environmental availability of metals …
This study investigated the possibility of utilizing gold mine tailings to produce sintered bricks. In the preparation process, clay was introduced as an additive. ... the optimum process parameters for the preparation of the sintered bricks are a clay content of 35%, forming moisture of 25%, firing temperature of 1030 °C, and holding time of ...
اقرأ أكثر
Heavy Metal Pollution from Gold Mines: Environmental …
In ores of higher gold content, the vat/tank leaching is employed, which involves leaching of the crushed and ground ore in large enclosed tanks equipped with agitators to dissolve the gold which then adheres to pieces of the activated carbon. ... In gold mine tailings, concentration ranging between 8.9 and 65.7 mg/kg have been reported in ...
اقرأ أكثر
Potential utilization of artisanal gold-mine tailings as
3.1 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 …
اقرأ أكثر
Production of gold mine tailings based concrete pavers by …
In their review article Almeida et al. (2020) show that mining tailings can be revalorized as alkali-activated as well as new polymer-based construction materials, ceramic tiles, bricks, mortars, aggregates for pavements and concrete. For gold mine tailings (GMT), few studies have investigated their reuse and none focused on the ASGM.
اقرأ أكثر
Microstructure and mechanical behavior of cemented gold/tungsten mine
CTCRB technology, corresponding to the sustainable/green Chinese mining idea, has been well used in mining to elucidate the hitches triggered by mine waste (Yu et al., 2021b; Xue and Yilmaz, 2022).It has many practical advantages (Zhao et al., 2022).Thus, the whole tailings and crushed rock are used as backfill aggregates to fill the quarry area, turning the …
اقرأ أكثر
Utilizing gold mine tailings to produce sintered bricks
This study investigated the possibility of utilizing gold mine tailings to produce sintered bricks. In the preparation process, clay was introduced as an additive. The effects of clay content, forming moisture, and sintering parameters (such as firing temperature and holding time), on the properties of the sintered bricks were analyzed by ...
اقرأ أكثر
Characterization and Reprocessing of Artisanal and Small …
Millions of tons of solid waste are generated by artisanal and small-scale gold mining in several regions of the world. This study focused on the tailings from the Abu Hamad …
اقرأ أكثر
Ecological and human health risks associated with abandoned gold mine …
Soil sample collection and characterization. Soil samples were collected within a 20 m radius of abandoned Au mine tailings dumps in three different areas in Krugersdorp located at 26° 7' 56" S and 27° 48' 13"E (Site 1), 26° 8' 34"S and 27° 48' 28"E (Site 2), and 26° 7' 40" S and 27° 48' 57"E (Site 3) ().Gold mining in these sites had ceased more than a decade ago.
اقرأ أكثر
Geotechnical Properties of Mine Tailings
Geotechnical Properties of Mine Tailings Hu, Ph.D., A.M.ASCE1; ... water content and compressibility. Over the last few decades, the ... the CRR of copper-gold-zinc tailings and gold tailings was insen-sitive to the initial consolidation stress (Wijewickreme et al. 2005; James et al. 2011). Geremew and Yanful (2013) illustrated that tail-
اقرأ أكثر
Characterization and Reprocessing of Artisanal and …
There are very few studies on the tailings generated by artisanal gold mining applied in many regions of the world [9, 19]. This study focused on the tailings of the Abu Hamad artisanal gold mine located in northeastern Sudan. The choice of site was made because Sudan is the second largest gold producer in Africa [ 30], and almost 85% of this
اقرأ أكثر
5 methods of gold mine tailings treatment and …
The gold content in gold mine tailings is generally 0.2-0.6g/t. Due to the backward mining technology in the past, some of the gold and silver is lost in the tailings. At the same time, most of the gold ore in China is accompanied by copper, lead, and copper. With the advancement of beneficiation technology, zinc, iron, sulfur, and …See more on lzzgasia
Heavy Metal Pollution from Gold Mines: Environmental …
In gold mine tailings, concentration ranging between 8.9 and 65.7 mg/kg have been reported in South Africa by Mitileni et al. while a higher concentration of 177.56 mg/kg was reported by …
اقرأ أكثر
Gold In Tailing Piles
Some tailing piles contain fortunes in lost gold values if identified and properly reworked with modern mining methods. Lode or hard rock tailings and mine dumps can be very productive sources of gold specimens, as many times …
اقرأ أكثر
Current situation and prospects for the clean utilization of gold tailings
Mine tailings are the waste residue of the milling process that is used to extract metals from mined ores. The design of tailings storage facilities (TSF) will vary depending upon the characteristics …
اقرأ أكثر
The composition and state of gold tailings
The research suggests that under similar sub-aqueous sedimentation-consolidation conditions, gold tailings of different compositions will be deposited in varying density states, but with the...
اقرأ أكثر
From Tailings to Treasure? A New Mother Lode
New technology allows it to recover up to 40% of the gold left in particle form in tailings. DRD Gold extracted 33,600 ounces of gold, worth nearly US$40 million, in the last quarter of 2013. Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources.
اقرأ أكثر
Historic Gold Mine Tailings | Contaminated Sites
Tailings are a by-product of a gold mining process that was common in the late 1800s and early 1900s. Rocks that contained both gold and arsenic were crushed and then spread over liquid mercury to remove the gold. The mercury was then evaporated, leaving the gold. The remaining sand-like substance is known as tailings. They include arsenic and ...
اقرأ أكثر
Development of geopolymer from gold mine tailings …
This study focuses on the production of geopolymers incorporating gold mine tailings (GMTs) as the primary aluminosilicate source. Utilizing the Taguchi experimental design, the effects of varying ...
اقرأ أكثر
Phytomining for Artisanal Gold Mine Tailings Management
No conclusion can be made on the gold content of the bullion due to the very low XRF value, and the low content of gold in the 20 kg of biomass. We believe that appreciable iron content of the bullion was collected from the biomass during the smelting process. ... "Phytomining for Artisanal Gold Mine Tailings Management" Minerals 6, no. 3: 84 ...
اقرأ أكثر
Geotechnical Properties of Mine Tailings | Journal of …
For instance, the results from laterite tailings indicated that the cyclic resistance ratio (CRR) increased with an increase in the initial effective consolidation stress, whereas the CRR of copper-gold-zinc tailings and gold tailings was insensitive to the initial consolidation stress (Wijewickreme et al. 2005; James et al. 2011).
اقرأ أكثر
Accelerating gold extraction from refractory gold tailings …
Gold tailings obtained from the Wa State Gold Mine Group (Myanmar) was screened for particle size, which revealed that over 80 % of the particles were finer than 74 μm. ... As can be seen from Table 3, the fluorine content of the gold tailings before pre-treatment is only 0.01 %, and that after pre-treatment with ammonium bifluoride is 1.27 % ...
اقرأ أكثر
Biocrusts significantly affect the bioavailability and …
Study site. In September 2021, we undertook research on the Ma'anqiao gold mine tailings in Zhouzhi County, Xi'an City, Shaanxi Province, China (107°53′12″–108°11′39″ E, 33°44 ′49″–33° 53′ 50″ N; Fig. 1a). The site is situated in the northern foothills of the Qinling Mountains and characterized by a temperate continental-monsoon climate, with an annual …
اقرأ أكثر