(6) Copper-cobalt ore Copper mineral and cobalt-containing pyrite and other cobalt minerals. (7) Arsenic sulfide copper ore The ore has a high content of arsenic, which is mainly in the form of arsenopyrite. Flotation process to solve the problem of copper and arsenic separation, reduce the arsenic content in the copper concentrate as much as ...
In most cases, the bubble-particle attachment is the slowest step in the flotation process, often requiring 5 to 15 min residence time to complete the mineral flotation. Ores processed in the future will be of lower grade and finer grained. ... After four flotation stages at 350 mL/min ore pulp feed rate, 74 pct of the Cu was recovered. But …
This study investigates the flotation kinetics of individual platinum-group elements (PGEs) and gold, namely Pt, Pd, and 2E+Au (i.e., Pt+Pd+Au), in the context of Platreef ore flotation.
The particle size results from wet sieving of the feed sample, four concentrates and tailings are given in Fig. 2 b. The amount of fine particles (0–20 µm) increases with flotation time, this can be attributed by a change of the collision efficiency E c, i.e. the fine fraction is floating more slowly.In identical conditions (liberation degree, …
Flotation is the most frequently used process in beneficiation equipment, it's directly affects the quality of finished products. We summarizes seven factors about the flotation effect, hoping to help your production. ... When the pulp is thicker, the dosage per ton of ore is less, and when the concentration of the pulp is dilute, the dosage of ...
In the gold ore flotation process, specific reagents need to be added to the ore pulp to selectively separate and purify gold minerals from gangue minerals and improve the recovery rate of gold concentrate. Due to the different properties of gold mines in various mining areas, the types and dosages of reagents added are also different.
The concentration of pulp is 25% - 35% in rough ore dressing, and 10% - 20% in flotation of fine-grained ore and ore with high mud content. what is the effect of pulp mass fraction on flotation?
During the sorting process, the primary roughening concentrate and tailings are returned to the primary roughening flotation machine for further selection, while the secondary tailings slurry is returned to the primary …
This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many …
Process control strategies involving continuous sensing of the electrical conductivity of the flotation pulp, and controlling lime additions also with respect to the feed ore flowrate, have been proven to provide tangible advantages in terms of both pH control and reduced lime consumption.
The sulfide ore flotation process can be studied by both chemical and electrochemical phenomena considering the interfacial energies. A broad application of this process in industrial field is the ...
1. Introduction. The recently arisen separation idea of process intensification has come up with higher demand for the development of current mineral processing technology [1, 2], and its purpose is to emphasize the significance of "process" regulation to mineral processing, and to further promote the popularization and …
Ore flotation device and process . United States Patent 4960509 . Abstract: A mineral processing device for floating relatively large particles and middling particles is disclosed. ... The second zone, termed the "feed zone", is preferably centrally located in the flotation device. Pulp, containing solid ore particles in a liquid carrier, is ...
It is inevitable for the occurrences of pulp pH buffering during pH control in flotation as the minerals with acidic/alkali properties tend to interact with pH modifiers and restore the pulp pH. This could result in some disturbing ions and alter the water/pulp chemistry. The purpose of this study was to identify the influences of pulp pH buffering on process …
Direct flotation refers to mineral flotation by direct addition of collectors and a frother to the flotation process without the use of activators. ... In addition, some …
About 50 kg sample of lepidolite run-of-mine ore (80% passing 14.3 mm), kindly supplied by Felmica Minerais Industriais, S.A. (MOTA® Ceramic Solutions), was employed in this study.For the flotation tests, the run-of-mine ore was finely ground to a particle size < 500 μm (77% passing 350 μm), through successive stages of screening …
Under appropriate pulp potential in PCF process, the flotation speed is fast and the flotation flowsheet is simpler than commonly used ones. The key factor of PCF is the redox reactions in the system, and according to the mixed potential theory, in the grinding-flotation system, redox reactions of sulfide minerals in pulp had two situations ...
6 Interaction of pulp density, flotation conditions and ore properties. The most suitable ore pulp concentration during the flotation process is related to the ore property and the flotation processing conditions. The general rules as flow: (1) Pulp Density. The mineral with large flotation density uses a thicker slurry, while the mineral …
Percentage of solids in pulp. Method of flotation employed. Temperature of pulp. Time of treatment. Recovery desired. Grade of concentrate desired. Ore Characteristic & Mineralogy. The mineralogical character of the ore determines, in a way, the character of the principal flotation agent or "oil" to be used. From this statement it is …
The sulfide film generated on the surface of oxidized minerals after sulfide treatment has a loose and porous structure; although it can enhance the hydrophobicity of oxidized minerals, during the flotation process, the sulfide film is prone to desorption due to the shearing forces generated by the stirring of the ore pulp [13]. The addition of ...
This study only investigated the effect of reagents on tungsten flotation, so the feed ore pulp for batch flotation test was molybdenum tailings. Fig. 1 shows the flotation test process. Firstly, 1.5 L of the ore pulp was placed into the flotation cell and stirred at 1990 r/min of the rotating speed. Then, the reagents were added successively ...
Typically, Zn from Zn oxide ores is recovered through sulfide flotation methods. Upon adding a sulfide reagent to the pulp, it adsorbs onto the surface of Zn oxide minerals, thereby forming Zn sulfide. This process modifies the surface characteristics of the minerals, leading to an improvement in the adsorption of collectors [6], [7]. The ...
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. …
Within the flotation process the pulp phase chemistry has a strong effect on the froth phase and therefore the manipulation of pulp chemistry factors such as the pulp potential (Eh), pH, dissolved oxygen (DO) and ionic strength (IS) can improve flotation performance. ... It is therefore necessary to find new ways to increase the …
Secondly, although the main factors of the experiment are pH value and density, other properties during the flotation process such as ore pulp flow, amina flow, starch flow can also be an influence. Regarding the ore pulp density, when the ore pulp is thin, the recovery rate would be low, resulting in the better quality of the pulp ...
According to the characteristics of the ore, the innovative process of flash copper flotation in weak acidic pulp and lead flotation, followed by further copper recovery, was developed. The closed-circuit test shows that copper concentrate assays Cu 16.33%, Pb 7.98%, Ag 242 g/t at Cu recovery of 86.67%; lead concentrate contains Pb …
flotation rate, particle size recovery, air flow, pulp density, etc.) As a result, it is difficult to study the effects of any single factor in isolation, and compensation effects within the …
With the usage of pulp potential control during grinding and flotation, the new pulp electrochemical technology for Mengzi lead-silver-zinc ore flotation was developed.
The sulfidization-amine flotation method is commonly used for the beneficiation of zinc oxide ores. Lanping zinc oxide ores contains 8.40% zinc, with the main mineral being smithsonite; additionally, they have a high mud content. Conventional sulfidization–ammonium flotation presents a low flotation index and unsatisfactory …
The efficiency of a flotation circuit operation relies on several factors that are pertinent to mineral nature and structure (variability of ore feed, particle size, complex mineralogy, and morphology) as well as the type of instrumentation and operational parameters (design parameters, reagents, quality of process water, air flow rate, and ...
حقوق النشر © 2024.Artom كل الحقوق محفوظة.خريطة الموقع