copper and arsenic minerals floated very strongly and there was no selectivity between copper and arsenic. Arsenic separation using pulp potential control If the flotation behavior of tennantite were similar to that of enargite, the most likely pulp potential region for
Copper/arsenic selectivity, determined as a ratio of copper recovery to arsenic recovery is shown in Fig. 10. There was very little change in copper/arsenic selectivity with a size reduction from 30 to 20 μm, but further regrinding to 10 μm has provided a significant improvement. Download : Download full-size image; Fig. 10.
Effect of ore dressing on flotation of copper and arsenic minerals in sulphide ore processing ... the highest selectivity in the copper sulfides/pyrite system was obtained in the presence of Z200 ...
The arsenic-signature copper minerals are added to the study, since many copper operations encounter arsenic as a penalty element in the saleable concentrate. It is shown that the addition of arsenic to the copper and iron sulphides alters the semiconductor and electrochemistry properties, and in turn, its flotation characteristics.
Salmani Nuri O, Allahkarami E, Irannajad M, Abdollahzadeh A (2017) Estimation of selectivity index and separation efficiency of copper flotation process using ANN model. Geosystem Engineering 20(1):41–50. Article Google Scholar
Copper Arsenic Flotation Selectivity - Remediation of metal-contaminated urban soil using flotation - NCBI. Dec 2, 2009 was evaluated for the removal of arsenic ... FreeChat. copper arsenic flotation selectivity - BINQ Mining. 23/02/2013 MEI Blog: Challenges in copper flotation. Sep 20, 2011 There are a number of papers on copper flotation ...
Selectivity and power of frothers in copper ore flotation 517 The ore was crushed in a jaw crusher to obtain particles smaller than 1 mm in size. Prior to each flotation experiment, the crushed material was wet ground in a steel ball mill. The size distribution of the ore, used as the flotation feed, is presented in Table 1. Table 1.
Study of Flotation Parameters for Copper Recovery from Tennantite Ore Peter Solozhenkin1, Olga Ibragimova2, ... Keywords: Refractory Copper-pyrite Ores, Flotation, Tennantite, Arsenic, Recovery 1.Introduction The treatment processes for the beneficiation of copper- ... been expected to improve selectivity for tennantite. It has
The removal of arsenic bearing minerals from concentrates is becoming more important as environmental laws become ever stricter with regard to smelter emissions. The onus is shifting to concentrate producers to remove these minerals from their product, with penalties applying to materials containing greater than background amounts. The arsenic content of …
There is currently no widely accepted industrial process that specifically aims to separate copper and arsenic minerals by flotation. Arsenic bearing minerals such as enargite (Cu 3 AsS 4) are a rich source of copper. Enargite contains 48 wt% of copper, compared to chalcopyrite (CuFS 2) which contains 34 wt% copper. In addition, any separation ...
Flotation tests determined that a P80 of 10 µms produced the greatest selectivity between copper and arsenic, but at a reduced copper recovery. An economic evaluation undertaken on the products of the regrind tests indicated that arsenic penalties were quite low relative to income, and that income from silver exceeds that from copper.
3.3 Flotation selectivity One of the objectives of this study was to synthesize organo-clays that exhibit high Cs + removal performance and can be easily recovered from the aqueous environment by flotation. Flotation performance of the Cs-loaded particles was studied using a laboratory flotation cell, as shown in Fig. S1 of the ESI.
dosage, and kinetic selectivity index of copper from iron. He found that the best flotation kinetics of copper attained at pH 11.5, solid percentage = 28% and collector concen-
Examined copper concentrate from flotation plant of the "Rudni k" mine contained 24%. of copper, 5,5% of zi nc and 4,5% of lead. By copper content this is a high-quality. concentrate. However ...
Sulfide-ore-bulk flotation followed by selective copper flotation with the addition of arsenic sulfide depressants can also separate copper and arsenic ores via conventional flotation [6].
The flotation effect of refractory copper-sulfur ore containing secondary copper minerals is better than that with butyl xanthate, but its selectivity is worse. Aerofloat Aerofloat has a weak collection capacity and slow flotation speed for sulphide minerals, but its selectivity is better than that of xanthate collectors.
Copper concentrates for 2013 both measured about 0.44 percent arsenic content. This is above typical levels where penalties occur. Tennantite and enargite are copper arsenic sulphide minerals that respond to flotation in a similar manner to other copper sulphides.
Copper Flotation Process Summary. Flotation of Copper Ores. Although basic porphyry copper flotation and metallurgy has remained virtually the same for many years, the processing equipment as well as design of the mills …
The bulk rougher copper-arsenic concentrate then is reground in a closed circuit with a cyclone to become the feed to the arsenic rejection stage. • The separation flotation stage has two steps. The first step is arsenic flotation at −200 mV SHE, under nitrogen gas, to selectively depress the non-enargite copper minerals and float the ...
Removal rates for arsenic, lead, and zinc were 48-61, 40-48, and 32-36 %, respectively. Flotation selectivity of Cu was greatly influenced by the contents of fine particles and organic matter of the sediments. The maximum flotation selectivity was obtained for the 53-125-μm size fraction.
Removal rates for arsenic, lead, and zinc were 48–61, 40–48, and 32–36 %, respectively. Flotation selectivity of Cu was greatly influenced by the contents of fine particles and organic matter of the sediments. The maximum flotation selectivity was obtained for the 53–125-μm size fraction.
Improved copper and gold selectivity in flash flotation circuits; High selectivity against iron sulfides (e.g., pyrite), unactivated zinc sulfides (e.g. sphalerite) and arsenic minerals (e.g., arsenopyrite). Its unique selectivity may facilitate elimination of the use of sodium cyanide at some operations; Low dosage required; Improved flotation ...
A unique technology of direct selective flotation is in use in flotation plant of the "Rudnik" mine in order to obtain selective lead, copper and zinc concentrates. Technological process is very sensitive to so-called "selectivity" because loss of individual metals through selective concentrates is present. Copper minerals flotation cycle is especially sensitive to …
Furthermore, it was shown that chelating systems in ion flotation can recover the targeted metal ions with better selectivity [48,49,50,51]. On the other side of the spectrum, there are very few studies in which the ion flotation of copper was tested in real material.
A review of the considerable, but often contradictory, literature examining the specific surface reactions associated with copper adsorption onto the common metal sulfide minerals sphalerite, (Zn,Fe)S, and pyrite (FeS(2)), and the effect of the co-location of …
In order for the high-arsenic regions of the Northparkes copper–gold orebody to be beneficiated economically, tennantite ((Cu,Fe) 12 As 4 S 13) present in the ore needs to be rejected to enable copper concentrates to meet the typical smelter penalty level of 2000 ppm As. Using a composite sample of high-arsenic drill cores from Northparkes it was possible to …
The arsenic content of Rosebery copper flotation feed is mainly present as arsenopyrite (FeAsS), containing approximately 46.0% arsenic with the remainder of the arsenic in copper sulphosalts (tennantite (Cu 12 As 4 S 13)), in a solid solution series with tetrahedrite (Cu 12 Sb 4 S 13). Tennantite contains approximately 20.3% arsenic.
It was found that controlled pulp potential (Eh) flotation is a prospective approach to promote the separation of arsenic-copper minerals from other copper sulphides due to the strong Eh ...