— Then their further analysis showed that temperature and reaction time are the main factors affecting the dissolution of lithium minerals ... Taking global warming potential as an example, the intensity of lithium extraction from ore is 15.69 tCO 2eq /t, 47.7 times that from brine (0.33 tCO 2eq /t) (Jiang SY et al., 2020).

DOI: 10.1252/JCEJ.14WE032 Corpus ID: 94625555; Extracting Copper by Lactic Acid from Copper Oxide Ore and Dissolution Kinetics @article{Deng2015ExtractingCB, title={Extracting Copper by Lactic Acid from Copper Oxide Ore and Dissolution Kinetics}, author={Jiushuai Deng and Shuming Wen and Jian-ying Deng and Dandan Wu and Jing …

 — In this study, an additional stage in the processing of an arsenopyritic refractory gold ore was studied. Arsenic extraction in an alkaline pretreatment was …

 — The primary aim of this study was to investigate the boron leaching process from alkali-activated ludwigite ore. Initially, the ore underwent activation through roasting at 1050 °C for 60 min with 20% sodium carbonate. Subsequently, the study examined the influence of leaching parameters, including temperature, time, liquid-to-solid ratio, and …

Gold dissolves readily in aqueous chloride solution in the presence of an appropriate oxidizing agent (such as chlorine, nitric acid, or ferric ions) to form the tetrachloroauric …

 — Dissolution of metals in organic solvents is relevant to various application fields, such as metal extraction from ores or secondary resources, surface etching or polishing of metals, direct synthesis of …

 — Abundant resources of magnesium silicates make an interesting prospect for long-term storage of CO 2 by mineral carbonation. Several carbonation processes proposed in literature for CO 2 storage employ extraction of silicate minerals using a liquid solvent. In this study, the dissolution of natural serpentinite in respective solutions of acids, bases …

 — The mechanisms responsible for invisible gold enrichment driven by coupled dissolution-reprecipitation reaction (CDR) are debated. Here we report the micro- to nano-scale textures of arsenian ...

 — The typical cyanidation process using 5 g/L of CN− at pH 10.5 on the same ore sample obtained 97% gold extraction in 24 h at ambient temperature. ... Gold Dissolution from Ore with Iodide ...

 — Sulfamic acid (SA), which possesses a zwitterionic structure, was applied as a leaching reagent for the first time for extracting copper from copper oxide ore. The effects of reaction time, temperature, particle size, reagent concentration, and stirring speed on this leaching were studied. The dissolution kinetics of malachite was illustrated with a three …

 — This manuscript reports the mechanistic and thermochemical aspects of the oxidative dissolution of an ore based on pyrite, which hosts sulfides of copper and silver.

 — The paper analyzes the process of incongruent dissolution of silicates taking place in close proximity to a talc mine. The chemical and phase composition as well as the concentrations and mobility ...

 — Most gold deposits occur associated with sulphides like pyrite and arsenopyrite; thus, precious metal dissolution is possible by oxidizing auriferous sulfide concentrate using simultaneous pressure …

 — As Fig. 5 indicates, dissolution of zinc was affected by changes in stirring speed. The results show that the leaching rate of zinc increases quickly below 400 rpm and remains almost constant beyond this speed to 600 rpm. The zinc extraction increases from 36.46% to 85.93% with an increased stirring speed from 100 to 400 rpm.

 — In recent times, almost 25% of global copper obtained by leaching-cum-solvent extraction routes is considered profitable for the manufacturing of high-quality cathode material. The dissolution kinetics of copper from low-grade goldfieldite ore was examined in ammonia–ammonium sulfate media. In this study, the influences of leachant …

 — For the low-grade Ni–Cu–Fe-bearing sulfide ore dissolution tests, (Fe 3+)-containing and (Fe 3+)-free oxidative leaching solutions were prepared.To prepare the initial solutions, sodium ion (Na +) or magnesium ion (Mg 2+) was added to the Fe 3+-containing dilute sulfuric acidic solutions.A fixed mass of Fe 2 (SO 4) 3, Na 2 SO 4, and/or MgSO 4 …

 — The total amount of copper bioleached from the lateritic ore by reductive dissolution was 78 % (based on the copper content of the laterite from aqua regia dissolution). ... Johnson DB, Grail BM, Hallberg KB (2013) A new direction for biomining: extraction of metals by reductive dissolution of oxidized ores. Minerals 3:49–58.

 — This work presents a detailed analysis of the effect of sodium and calcium hypochlorite species, HNO3, HCl, H2SO4 and pH on the kinetics and efficiency of silver …

Evaluation on liquefaction eect of potassium dissolution extraction from low‑grade solid potash ore in Qarhan Salt Lake, northern of Tibetan Plateau Yachao Song1 · Han Hu1 · Chuanyong Ye2 · Yuanyi Zhao 2 · Lichun Ma2 · Juan Zhang3 · Qunxiong Yan3 · Yuhan Lin 3 Accepted: 18 March 2024 / Published online: 20 April 2024

 — This research work deals with the extraction of nickel from a low grade nickel laterite ore, taken from a deposit located in southwestern of Iran, through agitation leaching at atmospheric pressure. The assaying and mineralogical studies carried out on the nickel laterite sample, showed the 0.88% Ni, and principally consisted of oxide and ...

An oxidized lateritic ore which contained 0.8 % (by weight) copper was bioleached in pH- and temperature-controlled stirred reactors under acidic reducing conditions using pure and mixed cultures of the acidophilic chemolithotrophic bacterium Acidithiobacillus ferrooxidans. ... Extraction of copper from an oxidized (lateritic) ore using ...

 — Manganese (Mn) extraction from iron-rich pyrolusite ore with cheap sulphur dioxide is considered to be the most promising method with advantages of rapid leaching rate and high leaching efficiency. Nevertheless, co-dissolution of iron (Fe) with manganese has limited the development of its commercial practice. In this work, the separation …

 — There is a huge variety of wastes and chemical elements therein depending on the numerous techniques of ore extraction (Changul et al., 2010). Therefore, it is important to incorporate the detailed information about the ore extraction processes in the remediation plan (Fig. 1). 5.7. Rehabilitation considering climate and hydrology

 — China, being the world's largest consumer of potassium fertilizer, faces signi cant challenges due to limited potassium reserves. Qarhan Salt Lake stands out as a reservoir containing 296 million tons of low-grade solid potash ore (KCl), establishing itself as the premier potassium fertilizer production base in China. The extraction of low-grade …

 — This study discusses the operating variables for removal of cadmium from phosphate ore using Na 2 EDTA. These variables include the reaction time, Na 2 EDTA concentration, liquid/phosphate ore ratio, number of extractions and microwave extraction. Na 2 EDTA induced a two-step extraction process including a rapid extraction within the …

 — Some studies have leant over the literature to review dissolution strategies, the chemistry of Nb and Ta compounds, and solvent extraction works towards the recovery of Nb and Ta from their mineral sources (Agulyanski, 2004, Nguyen and Lee, 2019, Nzeh et al., 2022, Shikika et al., 2020, Zhu and Cheng, 2011). Even though, there is a lack of ...

Mohapatra et al., also examined the effect of laterite ore in various forms such as raw ore, calcined ore, and calcined ore and then soaked in dilute sulfuric acid, before bacterial dissolution. The results of this study showed that the highest percentage of nickel extraction with calcined ore at 600 °C for 31 days was obtained at a pH of 1.5 ...

 — Thus, for successful extractions, the impurity content in the oxide mineral ore and choice of extraction method and/or extraction agents are key [11]. ... dissolution and extraction techniques suitable for complex Nb-Ta mineral ore matrices or concentrates largely depend on certain factors. Apart from the physicochemical properties, such as ...

 — Monazite is a poorly soluble mineral of rare earth phosphate. It is an ore of the rare earths which is difficult to break down; in industry either concentrated sulphuric acid or caustic soda is used to attack finely ground monazite at between 140 °C and 400 °C. In these processes, the rare earths are converted into different solid compounds, …

Qarhan Salt Lake contains approximately 296 million tonnes of low-grade solid potash ores. The exploitation and utilization of this low-grade solid potash ore represents the fundamental framework for the sustainable development of Qarhan Salt Lake's potash fertilizer industry. It also alleviates the shortage of potash resources of China. In this …