23.3: Hydrometallurgy
If there are no other economic elements within the ore a mine might choose to extract the uranium using a leaching agent, usually a low molar sulfuric acid. Similar to copper oxide heap leaching, also using dilute sulfuric acid. The final product is yellowcake ((U_3O_8)) and requires significant further processing to produce fuel-grade feed.
Copper Ore
Bioleaching of Copper and Uranium. K.A. Natarajan, in Biotechnology of Metals, 2018. Cerro Colorado. In 1993, the company started operations for consolidated treatment of mixed copper oxides and fully sulfide copper ores and the use of thin-layer leaching. ... During the flotation of porphyry copper-gold ores, emphasis is usually placed on the ...
Laboratory Flotation Characterisation of a Uranium- bearing …
Keywords- Copper ores, process mineralogy, uranium, flotation 1. INTRODUCTION Uranium in nature occurs as oxides and oxysalts defining their higher chemical affinity for oxygen than for sulphur. Apart from uraninite/pitchblende, the simple uranium oxide mineral ... In copper ores, uranium often occurs as discrete phases [2], [9]
Flotation of uranium from uranium ores in canada: Part I‐flotation
About 150 flotation tests were done on Elliot Lake ore with 15 reagents as collectors in order to screen and choose an attractive collector for uranium flotation. Several variables were studied including pH, conditioning time and mode of collector addition. The tests were done in a Denver or Agitair subacration cell. The particle size of the ore was kept at 85% …
The flotation of gold bearing ores — A review
Abstract. The practice of the flotation of pure gold and gold-bearing ores such as tellurides, aurostibite, kerogen, pyrite, pyrrhotite, copper-gold ores and mixed sulphides is reviewed. The factors which influence the choice of collectors, pH and Eh, are discussed as well as the application of differential flotation.
Laboratory Flotation Characterisation of a Uranium-bearing …
copper ores compared to the gold ores (RY1 and SYW1) which are marginally low, indicating uranium is less associated with gold. Of the copper rich ore samples, uranium levels are high in RGY1 with moderate amounts in RG8 and RR7. RRG4 is the only high …
Solvent extraction of Cu, Mo, V, and U from leach solutions of …
Vanadium extraction efficiencies were relatively low, at about 65% for flotation tailings, but in the case of copper ore reached levels of 80%. In the case of …
Cyanide chemistry and its effect on mineral flotation
Conclusions. Cyanide has been used to improve the selectivity in the flotation of base metal sulphide minerals. Iron, copper and zinc sulphides can be depressed by free cyanide when xanthate is used as collector. The mechanisms underlying the depression effect on pyrite flotation may be attributed to the formation of insoluble hydrophilic iron ...
Review Review of the Main Factors Affecting the Flotation of …
review is to focus on the factors affecting the flotation of sedimentary phosphate ores, as they provide 80% of the world's phosphate production. Minerals 2020, 10, 1109 4 of 22 Table 1. Leading phosphate producers [13]. ... enriched in copper and iron 1.9 1400 N.A.: Not available. Minerals 2020, 10, 1109 5 of 22 Table 2. Abundant phosphate ...
U(VI) removal from diluted aqueous systems by sorption–flotation …
Radioactive pollution of the environment caused by uranium ores hydrometallurgical processing, in addition to the cross-contamination generated by other heavy metals used in this industry, is ...
Copper Ore Types: Sulfides vs. Oxides
Copper-containing rock, or copper ore, holds only a small percentage of copper. Most of the rock is unwanted material, typically referred to as gangue. There are two main types of copper ore that ...
Challenges and opportunities in the recovery/rejection of trace
This review looks at the existing and possible strategies of improving gold recovery in porphyry copper ores and rejection of penalty elements such as uranium, …
The Challenges and Prospects of Recovering Fine Copper …
Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be considered …
Possibility of uranium and rare metal recovery in the Polish …
The 74 ± 3.7% uranium from concentrated of leach solution from copper ore and 79 ± 4% of uranium from flotation waste was recovered. With uranium other …
Enhanced process route to remove fluorine and uranium from …
During smelting, the uranium segregates into the slag and, to avoid it a prior pressure-leaching of the crushed ore is required to extract the uranium (Roxby …
Flotation | SpringerLink
Flotation. According to the difference in physicochemical properties of mineral particle surfaces, flotation is the method that selectively enriches the target minerals in the pulp at the gas-liquid interface and separates them from the pulp, thus realizing the mineral separation. It is also known as floating separation.
The Olympic Dam Mega-Expansion Without Uranium …
The radioactivity of Olympic Dam ore (assuming secular equilibrium3 from uranium only), based on the average grade to date of 0.069% U3O8 (or 690 g/t), can be estimated at about 104 MBq/t, while current tailings are about 94 MBq/t (based on 66.7% extraction efficiency; all data taken from Mudd, 2010). For comparison, natural soils and rocks ...
BENEFICIATION OF URANIUM ORES (Technical Report)
Abstract. 32p. A summary of the history and state of the art of physical beneficiation of uranium ores is presented along with a detailed description of research on concentration of uranium ores by attrition grinding. Information on flotation, gravity concentration, e1ectronic sorting, and selectmve grinding was gathered to complement the study ...
Mineral Processing | SpringerLink
For example, the average iron grade of the iron ores in China is only around 33%, but the iron ore grade required for blast furnace smelting is at least 60% or even above 65%; the average copper grade of copper ore resources is 0.87%, while the copper ore grade required for copper smelting plant is usually 20%, and the Grade 5 copper ore, …
Copper (Cu) Ore | Minerals, Occurrence » Geology Science
Copper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human civilizations for thousands of years due to its excellent electrical and thermal conductivity, high ductility, and resistance to corrosion. Copper is widely used in various …
Extraction of Gold and Copper from Flotation Tailings …
This study presents the novel idea of a cyanide-free leaching method, i.e., glycine-ammonia leaching in the presence of permanganate, to treat a low-grade and copper-bearing gold tailing. Ammonia played a …
Laboratory flotation characterisation of a uranium-bearing copper …
The study found that uraninite (UO2) and masuyite (Pb[(UO2)3O3(OH)2] 3H2O) were the major U-bearing minerals, extremely fine grained (average grain size 4μm) and …
Recovery of metal values from copper slags by flotation and …
The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitic-type of ancient copper slag containing 1.24% Cu, 0.53% Co and 53.16% Fe were subjected to an experimental study. Two different routes were followed to recover the metal values. The first route was roasting the slag with …
Biotech key to unlock mineral resources value
This was a clear demonstration of how low-grade copper resources can be exploited by using biometallurgy technology [30]. 3.3.2 Biometallurgy of uranium ores In order to keep pace with the increasing demand of uranium for nuclear power generation, China’s uranium production has been orientated to the exploitation of low-grade or ...
Laboratory Flotation Characterisation of a Uranium-bearing …
Uraninite is a primary mineral while masuyite is weathered product of uraninite and is expected to be found along the altered and oxidized zones. According to Fig.1, masuyite is found in most of the copper bearing ores (RRG4, RG8 and RGY1) which are dominated by chalcocite and bornite, secondary copper minerals.
Optimisation of gold recovery by selective gold flotation for copper
Gold flotation is often overlooked as a processing option as the precious metal is viewed as being associated with the sulphide particles present in the ore, even when a proportion of the gold is free. Gold does float readily, however, and the free gold can be selectively floated away from an ore containing sulphides.
Laboratory flotation characterisation of a uranium-bearing copper ore
uranium ores in Canada: Part I-flotation results with Elliot Lake uranium Over 40% of the uranium is distributed in the -8µm fractions ores using chelating agents as collectors". The Canadian Journal of compared with copper, which is concentrated mainly in the Chemical Engineering 61 (5): 728-744, 1983. +8-20µm range.
Selective Process Route to Recover Magnetite from
Mining is facing a transformation in terms of environmental and social performance with improved mine management practices required [].For instance, it was proposed a methodology to generate geopolymer from iron ore tailings [], a fine material rich in silica, and it was presented a selective process route to recover uranium, rare earth …
Mineral Processing of Rare Earth Ores | SpringerLink
2.2.1 Occurrence. Rare earth minerals occur as fluorites, oxides, tantalates, carbonates, phosphates, sulfates, borates, silicates, etc. (Qi 2018).List of different rare earth minerals are presented in Table 2.3.The average concentration of REEs in the earth's crust is found to be 150–220 ppm, which is much higher than the concentration of other base …
Possibility of uranium and rare metal recovery in the Polish copper
The Polish copper deposits in the Lubin-Sieroszowice region contain ca. 60 ppm uranium in the ore, while the copper concentration is 2%. Even though not all of these resources are available, the possibility of uranium recovery encourages other metal extraction by leaching from waste streams. 2. Material and methods.