2 ph is important for pyrite flotation normally pyrite can float well at acid conditions without adding any activator however if you want to float the pyrite at alkaline conditions you need to add cu2 as activator because pyrite can be depressed at alkaline conditions 3.

A detailed study was conducted to evaluate the effect of particle size ph flotation time collector type and addition on efficiency of tennantite flotation it was shown that maximum copper recovery of 953 was keywords refractory copperpyrite ores flotation.

A study on the effect of active pyrite on flotation of of activated pyrite on the chalcopyrite flotation efficiency was investigated 2 materials and methods the experiments were performed on copper ore obtained from sarcheshmeh copper mine kerman iran the representative ore samples were used to measure particle size distribution by mechanically.

Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores misreported pyrite into copper concentrates decreased the grade and recovery of copper.

Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores misreported pyrite into copper concentrates decreased the grade and recovery of copper in this study the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease the.

Affects the flotation performance of the ore for each oxidation degree tested for the majority of the oxidation states oxidative pulp chemistry delivered by electrochemically inert grinding media such as high chrome media resulted in better flotation performance and better selectivity of chalcopyrite against pyrite.

An experimental investigation was carried out to improve the froth flotation method of separating coal pyrite the effect of several surface active agents on the floatability of an iowa coal and its associated pyrite was studied in both the presence and absence of methyl isobutyl carbinol mibc a.

In this paper the effect of sodium alginate sa on the flotation separation of molybdenite mos2 from chalcopyrite using kerosene as collector was systematically investigated the results of singlemineral microflotation tests indicated that sa exhibited strong depression on chalcopyrite flotation while it imposed no impact on the floatability of molybdenite.

Arsenopyrite is a common arseniccontaining mineral that is often closely associated with sulfide minerals such as pyrite chalcopyrite pyrrhotite galena and sphalerite and with precious metals such as gold and silver the selective inhibition of arsenopyrite is an important method used to reduce the arsenic content of processed products the cost of arsenic removal in metallurgical.

Citeseerx document details isaac councill lee giles pradeep teregowda the effect of sulphite ions on the xanthateinduced flotation of copperactivated pyrite has been studied various techniques have been used to identify the plausible mechanisms of interaction of sulphite with both collector and pyrite surface it was found that sulphite depressed the xanthateinduced flotation of.

Effect of conditioning time on chalcopyrite flotation 0 20 40 60 80 100 0 2 4 6 8 number of bacteria 10x bacteriaml r e c o v e r y figure 3 effect of bacterial concentration on chalcopyrite flotation 0 20 40 60 80 100 0 50 100 150 200 250 particle size micron r e c o v e r y figure 4 effect of flotation recovery on particle size.

Electrochemically active metals display synergetic effect with ova on pyrite depression whereas noble metals activate pyrite and reduced depressing potency of ova keywords pyrite ovalbumin metal ion flotation redox potential introduction pyrite fes2 is the.

Figure 14 collectorless flotation of pyrite in the presence of cu2 ions ph 92 flotation time 5 min 15 28 figure 15 effect of atmosphere grinding flotation on chalcopyrite floatability after grinding.

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 system can keep process changes from producing the expected effects klimpel 1995 this makes it.

Furthermore the effect of co2 satd water on collectorless flotation recovery of oxidized pyrite was also investigated at different satn temps 433 c according to the results ultrasonic pretreatment had a significant effect on collectorless flotation recovery of oxidized pyrite with recovery values of 50 after 60 min of sonication.

Here the old pyritepoor and the still active pyriterich tailings were stacked in the same valley impoundments but in two well separated areas differently from reps where tailings resulting from single or double flotation had to be inferred at fushe arrez the location of single and double flotation tailings is perfectly known by company.

In early work by steyn 1996 on the effect of nitrogen flotation gas on merensky reef samples it was found that pyrrhotite chalcopyrite and pentlandite in the flotation tails were significantly lower with ic3ttc than with a dtcdtp mixture an extensive study on the flotation chemistry of thiocarbonate collectors on auriferous pyrite by du.

It was found that copper ions activate the pyrite flotation due to the formation of copper xanthate and dixanthogen.

Compared to fresh water seawater significantly increased pyrite recovery in flotation and made the separation of chalcopyrite from pyrite more difficult the significant increase in pyrite recovery in flotation using seawater mainly resulted from the increased copper activation on pyrite.

Pyrite depression in the flotation of copper ores is difficult due to the activation of cu 2 ions on pyrite surface in this study the radical chain reaction involving the redox cycling of cuiii induced by sodium metabisulphite mbs was exploited to selectively depress the flotation of copperactivated pyrite at ph 80.

A number of experiments were conducted to determine the flotation characteristics of iowa coals in which various conditions were applied to study the effect of different parameters such as frother dosage oily collectors pyrite depressants and various combinations of these reagents flotation tests were also conducted with appalachian coals for comparisoniowa coals did not respond as well.

This study revealed the effect of dextrin on flotation separation and the surface properties of chalcopyrite and arsenopyrite at ph 8 the results of microflotation showed that dextrin had an obvious inhibitory effect on arsenopyrite at this ph and the depression behavior was enhanced with an increase of dextrin concentration.

O formation in the flotation pulp liquid 13 in this study the effect of sodium sulphide addition during grinding on formation of h 2 o and its influence on complex ore flotation was investigated the results are presented and discussed in terms of h 2 o generation vis vis concentrate grade and recovery in flotation 2 method and.

Oxidising conditions were beneficial to coppergold flotation and pyrite depression the surface analysis showed that the improved flotation was attributed to a combined effect of several factors including pyrite surface oxidation which reduced its floatability increased collector adsorption on.

Pdf a study on the effect of active pyrite on flotation active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores misreported pyrite into copper concentrates decreased the grade and recovery of copper in this study the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease the.

Physicochemical problems of mineral processing active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores misreported pyrite into copper concentrates decreased the grade and recovery of copper in this study the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease.

Study the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease the active pyrite recovery by flotation firstly optical microscopic and grinding studies were carried out to determine the optimal particle size and grinding time.

The efficiency of flotation process is much less for particles in the range of 0 to 10 microns authors 4 5 observed a decrease in pyrite recovery and a lower flotation rate constant for fine particles they suggested that the optimal size range for pyrite flotation in environmental desulphurization is between 35 microns m and 120 m.

This was further confirmed by pyrite flotation in the presence of copperii in fig 5 15 10 3 moll of copperii based on the amount of edta extracted copper in table 3 was added during pyrite grinding it can be seen that addition of copperii had exactly the same effect on pyrite flotation as chalcopyrite.