The copper ores, waste from the copper industry, phosphate rocks and phosphogypsum were considered as sources of uranium in these studies. Apart from uranium, these materials also …

The Uranium ore treatment plant at Jaduguda, India, recovers copper, nickel and molybdenum as byproducts before the bulk flotation tailings are subjected to leaching to recover uranium values.

First the acid-consumers and then the uranium minerals were floated. On ore ground in the Faraday mill grinding circuit, and using Faraday mill water in the flotation step, a recovery in the flotation concentrate of from 91 to 93% of the uranium was obtained in 45 to 50% of the weight at a grade of 0.24% U/sub 3/C/sub 8/.

Bench-scale flotation tests were done with a chalcopyrite, sphalerite and pyrite-containing ore from Timmins, Canada using p-nonylcupferron as collector. Effects of pH and the need for adding copper sulphate for zinc activation and lime as pyrite-depressant were studied. The collector floated nearly 94% copper and 94% zinc without …

Potassium ethyl xanthate has been reported to have enhanced hydrophobicity and promotion of bubbles in the flotation of low-grade copper ore [10, 22]. It has been reported that the total loss of ...

Flotation tailings from copper production are deposits of copper and other valuable metals, such as Mo, V and U. New hydrometallurgical technologies are more economical and open up new possibilities for metal recovery. This work presents results of the study on the extraction of copper by mixed extractant consisting p-toluidine …

Preconcentration of Primary Uranium Ores by Flotation by Burt C. Mariacher E XTRACTION of uranium from ores is being ac- complished by processes which, for the most part, subject the entire ore to acid or carbonate leaching. Ore deposits with a U,O, content below 0.10 pct U,O, are seldom considered suitable for treatment by leaching.

In this paper, processing of uranium ores is discussed, namely, beneficiation by radiometric sorting, gravity and magnetic separation methods, flotation and leaching.

Interestingly, uranium is fine grained, concentrating highly in the -8μm range in all samples studied, averaging more than 73 ppm U. In the coarser range, U is less concentrated, 41 ppm in +8-38μm and 38 ppm in the +38μm size range. The distribution of uranium relative to copper is provided in Table 3.

A 30-hp. motor furnished power for all the air necessary for both mixing and separating, and the oil consumption averaged as low as 0.13 lb. of refined pine-oil per ton of ore. It was an ideal floating ore. Since then the Callow scheme has been adopted by nearly all the other mills in the Coeur d'Alene for the treatment of their lead- zinc ...

The uranium and other deficit metals recovery from copper flotation tailings and other copper mine waste materials. •. The decreasing of enhanced hazardous …

During the preliminary stages of copper ore enrichment, significant amounts of flotation waste are generated. KGHM, since its inception, has been searching for a technology that is technically, economically and environmentally feasible for the economical usage of the waste from the flotation of copper ore [ 19 ].

economic to acid heap leach the stockpile. The recovery of these copper minerals by flotation or. hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground ...

particle separation. flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water. The flotation process was developed on a commercial scale early in the 20th century to remove very fine ...

The copper flotation concentrate used in this study is from South Australia, in which chalcopyrite and bornite are dominant copper minerals and haematite is the main gangue mineral. ... Xu, M., Dong, J.Ford, F., 2016. Rejection of uranium from a copper gold ore by flotation. In: XXVIII International Mineral Processing Congress (IMPC 2016 ...

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 …

Flotation of Copper–Gold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores, it is normal practice to add a xanthate as the primary collector and dithiophosphate as a secondary collector (Bulatovic, 1997). This combination gives satisfactory results in respect of copper concentrate grade and …

On ore ground in the Faraday mill grinding circuit, and using Faraday mill water in the flotation step, a recovery in the flotation concentrate of from 91 to 93% of the uranium was obtained in 45 to 50% of the weight at a grade of 0.24% U/sub 3/C/sub 8/.

Froth flotation of copper-zinc-lead ores is a complex process based on similar metallurgy processing and strong interactions between chalcopyrite and sphalerite. These types of ores represent 15% of the world production and 7.5% of copper deposits all over the world. ... nickel sulphate, uranium and phosphates. The carbonatite complex is the ...

This study showed that uranium is floated with oleic acid, cresylic acid or other chelating agents which was further confirmed with recent work on Elliot Lake …

In the Institute of Nuclear Chemistry and Technology study on uranium leaching from copper ores and tailings were carried out. In Poland, there are huge …

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% …

In the past few years the potential value of Northern Saskatchewan's low grade uraninite ores has increased greatly. In April of 1950 the value of acceptable uranium concentrates was raised from $2.75 per pound of U3O8 to a maximum of $6.00 per pound of U3O8 (1). With the present emphasis on the development of nuclear energy as a source of …

@article{osti_248206, title = {Beneficiation of flotation tailing from Polish copper sulfide ores}, author = {Luszczkiewicz, A and Sztaba, K S}, abstractNote = {Flotation tailing of Polish copper sulfide ores represents more than 90% of the mass of run-of-mine ore. The tailing contains mainly quartz, dolomite, clay minerals, traces of …

ABSTRACT. This study investigates the mode of occurrence of uranium in a copper concentrate from the Prominent Hill mine. Mineralogical and liberation studies of a high …

A process and flotation agents are provided for flotation of lead-, uranium-, and rare earth-type minerals and ores in which an aqueous pulp of the mineral or ore is subjected to a froth flotation, characterized in that the flotation is performed in the presence of a tertiary amine flotation agent having the general formula: ##STR1## wherein: R is a aliphatic …

Porphyry copper deposits are important sources of copper and typically processed by flotation to produce copper concentrates. As mining areas become deeper, the amounts of impurities, such as sphalerite, can be increased in copper ores, so the appropriate depression of sphalerite floatability should be achieved to obtain saleable copper …

Copper ore usually contains about 0.5 to 2% copper that occurs in the form of disseminated and stringers. The run of mine ore is reduced from 150 mm to 25 mm size in Jaw and Cone crushers. The crushed ore is grinded in ball mills to −74 μm size. The ore is processed by froth flotation comprising rougher and scavenger cells.

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.

Bioleaching is used today in commercial operations to process ores of copper, nickel, cobalt, zinc and uranium, whereas, biooxidation is used in gold processing and coal desulfurization. ... However, once bioleaching gained acceptance as a potentially viable method for the recovery of metals from low-grade ores, flotation tailings and waste ...

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.

The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was ...

As part of a metallurgical investigation to identify factors which may promote undesirable recovery of uranium in a copper concentrator in Australasia, detailed mineralogical analysis was performed on several drill core samples to identify the ... Laboratory flotation characterisation of a uranium-bearing copper ore. Laboratory flotation ...

The uranium in the reefs is present at about 0,02 per cent on average, but there have been problems in the development of a flotation technique that will give a uranium concentrate because (i) much of the uranium is present as uraninite, which is inherently difficult to float; (ii) the uraninite tends to be very finely ground during

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 …

Flotation tailings from copper production are deposits of copper and other valuable metals, such as Mo, V and U. New hydrometallurgical technologies are more …

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.

Abstract. Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the …