Flotation reagents consist of copper sulfate as activator, PAX and AF208 as collector and the frother is Dowfroth 250. Flotation is conducted at natural pH (O'Rourke et al., 2000). At the Snip Mine in British Columbia, Canada, the gold ore is floated at natural pH value (8.5) using Aerophine 3418A and a dithiophosphate; the frother is Dowfroth 250.
Flotation - Surface Chemistry and Reagents C8b-51 MODIFIED HYDROXAMATE COLLECTORS FOR KAOLIN FLOTATION C. Basilio*, R.A. Lowe*, A. Gorken°, L. Magliocco°, R. Hagy° *Thiele Kaolin Company, Sandersville, Georgia, USA °Cytec Industries Inc., Stamford, Connecticut, USA °Cytec Industries Inc., South Charleston, West ia, USA Abstract …
Aero 6493 promoter is alkyl hydroximate based collector and is specified to be a. 2264 Aksay et al. Asian J. Chem. ... Aero 704 promoter added stage-wise at flotation tests. The results of the.
As expected, economic analysis of the new flotation chemistry with AERO 6493 shows a strong dependence on the reagent price. If the cost of AERO 6493 could be reduced to $1.80/lb, the single-stage flotation of coarse phosphate with the alkyl hydroxamic acid/alcohol collector would be competitive with the traditional double float process using ...
Structural Modification of Xanthate Collectors To Enhance the Flotation Selectivity of Chalcopyrite Xin Ma,† Liuyin Xia,‡ Shuai Wang,*,† Hong Zhong,*,† and Hui Jia† †College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China ‡Surface Science, University of Western Ontario, London, Ontario N6G0J3, …
Initial economic analysis of the new flotation chemistry with AERO 6493 shows a strong dependence on the reagent price. If the cost of AERO 6493 could be reduced to $1.80/ lb, the single stage flotation of coarse phosphate with the alkyl hydroxamic acid/ alcohol collector would be cost competitive with the traditional
This study aims to introduce xanthan gum as a favorable selective depressant for talc depression in sulfide copper flotation. As chalcopyrite is a crucial industrial mineral and a vital constituent of high-quality copper mines [15], it was chosen to be on behalf of sulfide copper minerals.Micro-flotation experiments on single minerals as well as artificial mixtures and real …
shows the results we obtained on the pure Ca-mineral flotation at pH 8 with AERO 6493 and a mixture of AERO 6493 and PX4826. Several kind of separation could be seen in …
Apparently, MDPE could achieve better flotation recoveries of chalcopyrite than SIBX or DTC in the lower dosage range from 1 × 10-6 mol/L to 1 × 10-5 mol/L, where the flotation recovery of chalcopyrite improved from 77.32% to 86.29%, 73.27% to 84.92% and 84.44% to 91.61% for MDPE, SIBX and DTC, respectively. It indicated that MDPE possessed …
Chalcopyrite flotation. ... In this case, only humic acids exhibit a similar collector behaviour as that of a commercial collector evaluated (Aero 6697 promoter). The flotation response of molybdenite in the presence of the different compounds tested as collectors (Aero 6697 promoter, glucose, bovine serum albumin, humic acids and biosolids) is ...
Humic acids exhibit similar collector ability for chalcopyrite and molybdenite as that of a commercial collector (Aero 6697 promoter). Biosolids show more affinity for pyrite. The copper recovery (85.9%) and copper grade (6.7%) of a rougher concentrate obtained using humic acids as main collector for the flotation of a copper sulphide ore from ...
The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO4) as a pyrite depressant to separate pyrite from chalcopyrite. Flotation and contact angle results indicated that pyrite could be depressed by KMnO4 at pH 7, while KMnO4-treated …
The flotation experiments of pure chalcopyrite with slurry flow rate of 0.4 m 3 / h and 0.5 m 3 / h and median diameter d50 = 45 μm were carried. The particle transport equation was coupled with the hydrodynamic model as a user-defined function, and the flotation rate constant was calculated by numerical simulation. ...
Aero 6493 promoter is alkyl hydroximate based collector and is specified to be a 2264 Aksay et al. Asian J. Chem. ... Aero 704 promoter added stage-wise at flotation tests. The results of the
This study focused on the selective galena depressive mechanism of tea polyphenol in chalcopyrite flotation. The mixed mineral flotation experiments yielded a copper recovery rate of 83.07 % and a copper grade of 29.32 % for the copper concentrate, as well as a lead recovery rate of 91.13 % and a lead grade of 71.37 % in the lead concentrate.
Every "rule" has its exceptions, however, and there are a number of plants presently treating Cu-Zn ores, using AEROPHINE 3418A promoter and a dithiophosphate in the Cu flotation circuit. Generally there are significant …
Acid mine drainage (AMD) released from copper sulfide contains a large quantity of sulfuric acid and heavy metals, thus being a threat to the surrounding ecosystem. In this study, AMD is used to evaluate options for activation of chalcopyrite depressed by a high alkali solution (HAS). The results showed the flotation recovery of chalcopyrite inhibited by HAS could be …
Laboratory flotation tests with AERO®6493 Promoter (alkyl hydroxamate) conducted by plant metallurgists of a Canadian mining company (British Columbia), on an ore assaying 0.61% …
Zeta potential measurements were used to assess the electrokinetic characteristics of chalcopyrite, molybdenite and pyrite in the presence of biosolids and their main components (humic acids, glucose and serum albumin) as well as a commercial collector (Aero 6697). Fourier transform infrared spectroscopy (FTIR) was then used to gain a deeper understanding of the …
It has been known for a long while that Aeropromotor 208 is an effective promoter in gold flotation (Leaver and Woolf ... covellite and chalcopyrite has also been studied (Sutherland and ... Selective gold flotation at Sonora Mining's Jamestown concentrator using Aero 5688 promoter. Min. Met. Process., 7 (4) (1990), pp. 180-184. Crossref View ...
Download scientific diagram | Micro-flotation tests of model minerals with Aero-6493 and [N 4444 ][DEHP] (pH 9, IL and collector concentration = 100 mg/L). from publication: Ionic-liquid ...
Alkyl hydroxamate collector was the commercial sample AERO 6493 Promoter manufactured by Cytec Industries Inc. Flotation. For laboratory flotation tests, 0.5 or 1 kg of ore was ground in a 0.24m diameter mild steel rod mill with 9.5 kg of mild steel rods at 67% solids to obtain a granulometry similar to that reported by the plant.
This paper discusses the effect of mixing anionic collectors (sodium oleate, hydroxamic acid, D2EHPA) with nonionic reagents on the selective separation of Ca minerals. The most …
Download scientific diagram | – Flotation of Ca-mineral at pH 8 with AERO 6493 and a mixture of AERO 6393 and nonionic reagent PX4826. Using a mixture of nonionic reagent and hydroxamic acid ...
Syensqo flotation collectors and promoters include the AEROPHINE®, AERO®, and AEROFLOAT® lines. These reagents improve selectivity for higher concentrate grades and …
Potassium amyl xanthate [50–100]; Aero 6493 (hydroxamate) [10–100]; Na-oleate [0–50] ... but also as a promoter for gold flotation and as a secondary frother due to its alcohol base. In a ... Major minerals in the deposit included stibnite, arsenopyrite and pyrite, and minor proportions of scheelite, chalcopyrite and native gold were also ...
However, there was no selectivity against chalcopyrite in the flotation tests performed. Increasing the pH using lime showed no gold depression. Fine gold was easily floated while some coarse gold reported to the flotation tail. ... AERO 7249, a monothiophosphate based collector is currently being used at Freeport, where it has improved the ...
These analyses clearly demonstrated that Cu-bearing goethite was the major contributor to copper losses. 70% of the Cu not recovered by xanthate and AERO6493 …
Bench-scale flotation tests were carried out on a carbonatite niobium ore sample, and they showed that the reagent combination, at less than 2 kg/t Aero 6493 (hydroxamic acid) and 1.0 kg/t sodium metaphosphate, could recover over 90% of niobium oxide from the ore feed at about 30% mass pull. The results indicated that the combination of ...
In froth flotation, HAOODE exhibited superior recovery for chalcopyrite over pH 3–12 and excellent selectivity for chalcopyrite against pyrite (FeS 2) above pH 10.5, as compared to the conventional reagent sodium isobutyl xanthate. This work provides a useful approach to develop effective reagents that could selectively adsorb on desired ...
Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, both in the …
shows the results we obtained on the pure Ca-mineral flotation at pH 8 with AERO 6493 and a mixture of AERO 6493 and PX4826. Several kind of separation could be seen in figures 7a and b.
Our AERO ® promoters are used extensively as flotation collectors and reagents for the flotation of a variety of minerals, including copper, gold, lead, zinc, nickel, iron, lithium and …
The authors noticed that the similar trend was obtained by microflotation results when achieving a highly separation of apatite from dolomite at pH 6.5. Alkyl hydroxamic acid (AERO 6493) was also tested as a collector and frother reagent for the direct flotation of phosphate sludge containing 19.53% P 2 O 5 (Nettour et al. 2019).
The four flotation concentrates were combined and reground in a rod mill with stainless steel grinding media. The total weight of grinding media was about 10.3 kg.Particle size P 80 = 20 μm was achieved by adjusting the grinding time. The size distribution was determined by Laser Diffraction with a Malvern MasterSizer (Malvern Instrument Ltd., U.K.) in line with the …
