No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Backfilling disposal based on cement solidification is one of the ways to solve the environmental and safe problems of uranium tailing surface stacking. Alkali-activated slag, especially sodium silicate activated geopolymer, has become the preferred cementing material for the uranium tailing backfilling system because of its advantages of corrosion resistance and …
Surface storage of uranium tailings presents a potential threat to the environment and human health. Cemented backfill can be used to dispose of tailings and control the …
Cemented uranium tailings backfill created from alkali-activated slag (CUTB) is an effective method of disposing of uranium tailings. Using some environmental functional minerals with ion exchange, adsorption, and solidification abilities as backfill modified materials may improve the leaching resistance of the CUTB.
uranium mine •Mine operated from 1951 to 1976, uranium production ceased in 1961 •Produced 3,530 t U3O8 from 538,342 t of treated ore •Tailings were discharged to a dam on a flat part of the site; •Over time approx. 150,000 t of tailings were lost from the dam to the adjacent river system through overtopping by supernatant flow and
Surface storage of uranium tailings presents a potential threat to the environment and human health. Cemented backfill can be used to dispose of tailings and control the ground pressure of stopes, providing a new approach for the in-situ seal of heap leaching uranium tailings (HLUTs). The backfillin …
Therefore, relevant experts put forward a method of backfilling disposal of uranium tailings based on cement solidification, which can effectively avoid the environmental and safe …
The decontaminated tailing produced, which comprises about 75% by weight of the current uranium tailings, appears to be suitable for mine backfill. Because mine backfilling normally uses about 50% of the plant tailings, the surface storage of about half of the uranium tailings, therefore, would be eliminated by this process.
The results of the study indicate that classified uranium mill tailings can be utilized as an effective backfill material without excessive control measures for radon and radon daughter …
BHP Olympic Dam, a uranium and copper mine located in Australia, has used cemented paste backfill to manage a portion of its tailings and dumps. ... Considering the practical experience acquired in Peru in the …
DOI: 10.1016/j.mineng.2019.106025 Corpus ID: 203935959; Cemented paste backfill for mineral tailings management: Review and future perspectives @article{Qi2019CementedPB, title={Cemented paste backfill for mineral tailings management: Review and future perspectives}, author={Chongchong Qi and Andy Fourie}, journal={Minerals Engineering}, year={2019}, …
Surface storage of uranium tailings presents a potential threat to the environment and human health. Cemented backfill can be used to dispose of tailings and control ground pressure of stopes ...
The inherent characteristics of the mill tailings and backfill strength requirements largely dictate the overall design development of the paste backfill plant (PBP). ... Essential Characteristics and Assessment of its Application for Mill Rejects of Uranium Ores ... 1.2 Case Study 2: AuRico Gold Inc., Young-Davidson Mine (AuRico) With a dry ...
Predicting the reactions of the backfill materials exposed to the effects of air and groundwater will eventually ensure an efficient and accurate mine fill system for sustainable mining operations. This paper reveals the …
The decontaminated tailing produced, which comprises about 75% by weight of the current uranium tailings, appears to be suitable for mine backfill. Because mine backfilling normally uses about 50% of the plant tailings, the surface storage of about half of the uranium tailings, therefore, would be eliminated by this process.
Copper, lead–zinc, silver, iron, uranium, manganese, gold, tin, etc., are some of the metallic minerals produced in India. ... "mine paste backfill", "tailings in paste backfill", "alternative binders in paste backfill", "cemented paste backfill", "fly ash use in paste backfill", "strength prediction of paste backfill ...
In recent years, the development of the paste backfill technique and its new cementitious materials have provided important ideas and references for the disposal of uranium tailings based on the ...
The mining operation is a challenging field for human development. Deep underground mining has increased as a result of the lack of economic minerals close to the surface of the ground. Mining companies are now thinking of backfilling mine wastes to prevent mine collapse during later and deeper extraction stages due to safety and environmental …
• Tailings ponds is used by all of the operating uranium mines to manage process tailings and sludges • Above ground tailing management facility (AGTMF) is used to manage waste rocks and contaminated materials. New Development • Tailings/sludge backfill is being adopted in the new uranium mine development in
Paste backfilling is an incipient underground mine backfill technology in India. It facilitates maximum use of mill tailings with enhanced stability of the underground workings and minimises rehandling of water, as …
Radon and its short-lived decay products are the most important contributors of inhalation exposure to ionizing radiation in uranium mines. This paper describes the …
The need to backfill in uranium mines is primarily of importance to improve ventilation, stabilize the pillars and roof, and possibly to extract a larger percentage of the uranium ore. If this can be achieved by utilizing the tailings from the beneficiation plant and using rock from the development headings which in itself may be slightly ...
This paper presents a comparative study of (222)Rn emanation from the ore and backfill tailings in an underground uranium mine located at Jaduguda, India.
There is also potential for tailings to be used as feedstocks for construction materials [26], geopolymers (GPs) [27], mine backfill [28], and other secondary industries [29]. Circular economy principles align with this shift toward viewing tailings as dynamic secondary resources rather than perpetual waste.
In addition, the mill tailings used as backfill material in uranium mines to stabilise the mined out stopes are the potential source of radon due to the presence of 226 Ra in tailings and their ...
The filling of underground mines with mine tailings allows the return of mining waste material to its origin, considerably reducing the amount of mine tailings deposited on the surface, thus decreasing the number of mining …
Abstract The use of some environmental functional minerals as backfill-modified materials may improve the leaching resistance of cemented uranium tailings backfill created from alkali-activated slag (CUTB), but these materials may participate in the hydration reaction of the cementitious materials, which could have a certain impact on the pore structure of the CUTB, …
The in situ backfill specimens showed a shrunk of 28-day UCS and TS by 9% and 7%, respectively, as compared to lab-prepared specimens. The findings of this study would help in bulk environment-friendly tailings disposal in underground mines, better backfill strength design, and further excavation processes in lead–zinc underground mines.
This paper presents a comparative study of (222)Rn emanation from the ore and backfill tailings in an underground uranium mine located at Jaduguda, India.
Iron ore tailings, silica tailings, sulphide-rich mill tailings, nickel, gold--silver, copper-gold, tungsten mine tailings, red mud, tantalum-niobium ore tailings, uranium and lead-zinc mill ...
The mechanism of heterogeneous characteristics and self-weight consolidation behavior of tailings backfill slurry were analyzed, and comparisons between the traditional methods used for strength ...
