Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an oxide content of from 0.2 to 0.4 per cent. While the recoveries of the sulfide minerals are considered satisfactory, using modern flotation ...
Flotation is a process of separating fine particles of different minerals from each other by lifting creation minerals at or on a water surface. For this test, 355.8 g of …
Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, …
As is seen from Table 3, tennantite floated with butyl xanthate has the lowest Beloglazov flotation rate constant.The use of soda increases the flotoactivity of tennantite, which is consistent with research data [].It is known that soda medium promotes the active flotation of pyrite; during flotation of copper-bearing sulphide …
Preferential flotation of copper sulfide ore beneficaition For the disseminated copper-sulfur ore, the preferential flotation process is adopted, and the sulphur in the tailings must be re-floated. To reduce the …
As ore grades constantly decline, more copper tailings, which still contain a considerable amount of unrecovered copper, are expected to be produced as a …
A Copper Flotation Flowsheet. Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two or more …
The copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various locations in the mining site; thus, the mineral composition, oxidation degree, mineral particle size, and grade vary. Therefore, in the mining operation, it is common to …
The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for the fine-grained disseminated of ore. In this work, a mineral liberation analyzer (MLA) was employed to study the characteristics of minerals. As a significant mineralogical …
For mixed oxide and sulphide ores, CPS is unsuitable for simultaneous flotation of copper oxide and sulphide minerals, as the sulphides are usually heavily …
The flotation of two types of complex nickel–copper sulfide ores was examined to emphasize the differences in behavior of pentlandite at the pH 10 using lime versus soda ash. One sample was typical of the Sudbury region and …
The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation …
1 Types of copper sulfide ore. (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, …
the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals ...
Selective flotation of sulphide minerals from complex ore is dependent on the several parameters such as: type and dosage of collectors, galvanic interactions and activation by dissolved ions 5,6 ...
Dithiophosphates are useful for copper sulfide flotation at pH > 9 [96,97,98] and are commonly used in supplemental cleaning circuits, as they are more selective to copper sulfides ... The Effect of Clay Minerals on the Process of Flotation of Copper Ores—A Critical Review. Appl. Clay Sci. 2019; 170:57–69. doi: …
Direct flotation of copper oxide ores has been extensively studied. ... The addition of ammonium salts is an effective way for enhanced sulfidation on the sulfide-xanthate flotation of copper ...
The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit …
Probably more than any other aspect, xanthate entrenched froth flotation's role in the utilization of the world's natural mineral resources. Sulfide minerals are the largest of the groups of minerals floated. Today, more than a billion tons of sulfide ores are concentrated annually throughout the world with this technology.
Pyrite particles, having framboidal/altered texture, are known to significantly affect pulp chemistry and adversely affect flotation performance. Therefore, the main objectives of this study were to demonstrate influence of pyrite mineralogy on the flotation of copper (sulphidic) ores and develop alternative conditions to improve the …
This means that 95.7% of the copper present in the ore was recovered in the concentrate, while the rest was lost in the tailings. (c) The % Cu Loss can be calculated by subtracting the % Cu Recovery from : % Cu Loss = 100 – 95.7 = 4.3% This means that 4.3% of the copper present in the ore was lost in the tailings.
A Flowsheet to recovery gold from sulfide ores. There are many arrangements and combinations using flotation in conjunction with treatment of gold ores. The two gold process flowsheets shown, with …
Through flotation of Copper-Nickel Sulfide Ores, the copper-nickel mixed concentrate with copper grade of 4.43% and recovery of 88.18% is obtained. In the pH range of 2–12, the surface of ...
copper ore and flotation reagents on the process of its processing [2-9], and the features of the flotation agent fixing mechanism on the mineral surface [10-13]. The purpose of this work is to study the flotation behavior of sulfide copper ore using sodium diisopropyldithiophosphate as a collector, to study the structure and composition of the ore
Complex and non-sulfide lead–zinc ores are difficult to concentrate, but the growing demand for lead and zinc metals necessitated their beneficiation. Froth flotation is practically the most effective method in their beneficiation when optimum flotation conditions are attained. The aim of the current study is to use process mineralogy as a …
The copper flotation tailings were cyanided for 4 hours; 28.9 percent of the total gold and 35.8 percent, of the total silver were extracted, giving overall recoveries of 91.2 percent of the Gold and 97.0 percent of the silver. Cyanide consumption was 4.7 pounds per ton of original ore.
Chapter 12 Flotation of Copper Sulfide Ores. 235: Chapter 13 Flotation of CopperZinc Ores. 295: Chapter 14 Flotation of LeadZinc Ores. 323: Chapter 15 Flotation of CopperLeadZinc Ores. 367: Chapter 16 Flotation of Nickel and NickelCopper Ores. 401: Subject Index. 443: Chapter 9 Interaction of Organic Regulating Reagents. 185:
Flotation experiments and chemical reagents The flotation kinetic behavior of chalcopyrite, pyrite and Materials and methods molybdenite (in an elevated-pyritic copper complex ore) and In this research, two ore types were utilized to analyze the apatite, dolomite and silicate (in a high-grade carbonaceous flotation kinetic models for either ...
During flotation, the following reagents were used: sodium sulfide (Na 2 S) for sulfidization of minerals, zinc sulfate (ZnSO 4 *7H 2 O) and sodium cyanide (NaCN) for depression of zinc minerals and pyrite. Sodium butyl xanthate (C 4 H 9 OS 2 Na) is used as a collector; oxal T-92 (CH 3 CHOHCH 3) is used as a frother.Before each flotation run, …
