The effect of surface potential on the flotation of chromite
The flotation was also found to favour the recovery of chromite particles with high chrome to iron ratio. ... (96)00040-4 0892-6875/96 $15.00+0.00 THE EFFECT OF SURFACE POTENTIAL ON THE FLOTATION OF CHROMITE S. SYSILA, H. LAAPASt, K. HEISKANEN~ and E. RUOKONEN Partek Industrial Minerals Oy, Finland t CUTEC …
Effect of high intensity conditioning on flotation of nickel …
Abstract. The effect of high intensity conditioning before flotation on hydrophobic flocculation of sulfide minerals and its relationship with flotation of low-grade copper-nickel sulfide ore were ...
A study on the recovery of fine chromite from UG2 tailings
The flotation was also found to favour the recovery of chromite particles with high chrome to iron ratio.The experiments showed a distinct abundance between the chromite surface charge and the ...
Effects of simultaneous ultrasonic treatment on the …
1. Introduction. Flotation is an effective method to enrich fine mineral and coal particles by utilizing the differences in the surface hydrophobicity and floatability between minerals and gangue particles [1], [2], [3], [4].However, low rank coal such as lignite cannot be upgraded very well by flotation because of the presence of highly hydrophilic groups …
The Magotteaux Mill®: investigating the effect of grinding …
In contrast, when grinding with high chrome steel media under nitrogen gas atmosphere, the reaction rate of fresh surfaces can be markedly reduced, hence, increasing the natural hydrophobicity of pyrite. ... Differential flotation of pyrite and arsenopyrite: Effect of hydrogen peroxide and collector type. Minerals Engineering, Volume 163, 2021 ...
Effects of high Mg2+ concentration on KCl flotation: Part I
A series of flotation tests on coarse KCl particles in brine solution prepared from potash ore from the Taquari Vassouras mine (Companhia Vale do Rio Doce; CVRD), Aracaju, Brazil was carried out to determine the recovery of sylvite in the presence of high concentrations of Mg 2+.The introduction of Mg 2+ caused the precipitation of fine salt …
A review of the effects of grinding media and chemical conditions …
Last, the influence of high chrome white iron grinding media and their effect on flotation performance are also briefly reviewed. 2. Effect of ore type and galvanic interactions ... therefore mechanistic models can be developed to predict the downstream effects on flotation and leaching when gold ore type (where the relative amount and …
Effect of ball size change on the performance of grinding …
1 forged alloy steel balls (A) 80 2 forged alloy steel balls (B) 80 and 60 3 ductile cast iron (C) 80 4 high chromium cast iron (D) 80 3.1. Flotation circuit In order to perform the …
(PDF) INVESTIGATION OF EFFECTS OF GRINDING MEDIA …
Abstract. Ball mills are equipments which has balls as grinding media and used for last step of grinding process. There are many factors which effect grinding performance of ball mills like; liner ...
(PDF) Grinding media
In contrast, high chrome steel grinding media have been found to produce higher sulfide flotation recovery (Greet et al., 2004; Greet et al., 2005). The results in this study agree well with these ...
Minerals | Free Full-Text | Effects of Different …
Different milling conditions, such as wet or dry, and use of different grinding media have a great impact on the flotation performance of sulphide minerals. In the …
Effect of using different grinding media on the flotation …
Previous studies have investigated the use of balls or rods made from mild steel, ceramic, stainless steel or chrome steel to investigate the effects of different media on flotation. Stainless steel or chrome media have been found to improve the flotation of sulphides compared to mild or forged steel media (Rey and Formanek, 1960, Peng et al ...
Beneficiation of South African chromite tailings using
In this project, chromite tailings from Western Limb of the South African Bushveld Igneous Complex (BIC) was characterised with the objective of recovering fine and ultrafine chromite using wet magnetic separation process. 2. Materials and Methods. Chromite tailings ore sample was obtained from a MG chromite processing plant in the Western Limb ...
IMPROVED FLOTATION OF FINE PGM TAILINGS WITH A …
The combined effects of a higher gas flow and the formation of micro bubbles when compared to a conventional flotation cell translate into higher bubble flux and hence improved flotation kinetics. An added effect is the significant increase in gas holdup in the pulp, where levels of 50% have been
Assessing the depression of high-concentration pyrite in …
Fig. 2 shows that as pH increased from 9.0 to 10.5 and then to 11.5, the pyrite recovery obtained from the flotation of the ore with 5 % pyrite decreased steadily from 94.5 to 40.6 % and then to 10.3 %. Hence, a direct link between the decreased pyrite recovery in Fig. 2 and the increased Cu grade in Fig. 1 when pH increased could be drawn. The …
The Reduction of Chrome in UG-2 Flotation Concentrate by
Flotation concentrates derived from processing UG-2 ore are typically characterized by high chrome contents (>3 wt.%) which are not amenable to conventional PGM smelters. The net effect of high chrome, inter alia, includes increased smelting energy requirements and the reduction of effective furnace capacity.
Case Study: Investigating the effects of high chrome …
The implementation of high chrome media improved lead and zinc recoveries as well as flotation kinetics. Building upon these findings, a plant trial utilising Magotteaux mining grinding media, One Cast High Chrome, was conducted in early 2011, focusing on its implementation in the ball mill.
Grinding Ball Wear & Breakage by Impact & Abrasion Tests …
There is a wide variation in the impact and abrasion properties among different lots and makes of 75-mm commercial grinding balls, according to laboratory tests. The mean impact lives to breakage ranged from 21,000 to over 300,000 for steel balls and from 18,000 to over 300,000 for alloyed white cast iron balls.
The effect of frother type and dosage on flotation …
The frothers, Dowfroth 200 (DOW 200) and Dowfroth 250 (DOW 250), supplied by Betachem were added at dosages of 40, 50 and 60 g/t.The collector, sodium isobutyl xanthate (SIBX), supplied by Senmin was added to the mill prior to grinding at a dosage of 150 g/t.The polymeric depressants used in the batch flotation tests were …
The Impact of Residual Flocculant on Flotation …
The effect of residual flocculant on settling was determined using settling test. The impact of high concentration of residual flocculant on PGMs ore in terms of recovery were investigated by comparing flotation circuit stream and chrome plant stream using Denver flotation cell. Results revealed that the chrome plant stream contained a higher ...
(PDF) Flotation of chromite and serpentine
The flotation was also found to favour the recovery of chromite particles with high chrome to iron ratio.The experiments showed a distinct abundance between the chromite surface charge and the ...
The study on the effect of flotation purification on the performance …
The mechanical strength of high strength gypsum prepared from PG concentrate was significantly better than that of raw PG, indicating that flotation purification can effectively improve the ...
The effect of surface potential on the flotation of chromite
The flotation was also found to favour the recovery of chromite particles with high chrome to iron ratio. The experiments showed a distinct abundance between the chromite surface charge and the selectivity as well …
The Magotteaux Mill®: Investigating the effect of …
The effect of galvanic interaction between grinding media and minerals on sphalerite flotation is discussed. The effect of the presence and absence of oxygen as …
The significance of grinding environment on the …
Mass recovery versus flotation time curves for rougher flotation tests completed on 100 grams of Rapid Bay galena ground to a P50 of 9 microns using forged steel, high …
EFFECT OF GRINDING CHEMISTRY ON 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.
(PDF) Study On The Performance Of High Chromium Cast
The effect of carbide content on the wear resistance of high chromium cast irons was evaluated by means of ball mill testing. Martensitic cast irons containing from 13 to 41% carbide volume ...
Influence of grinding conditions on the pulp chemistry and flotation …
Recently, Mu et al., 2020a, Mu et al., 2020b examined the effect of grinding media (forged steel, 15% chrome steel and 30% chrome steel) on the flotation of pyrite with PAX (potassium amyl xanthate) as the collector at pH 5.0, 7.0 and 8.5. They found that the effect of grinding media on pyrite flotation was dependent on pulp pH.
(PDF) Grinding Media in Ball Mills-A Review
The energy con sumption for spherical balls was 3.6 Kw after grinding for 420 minutes, producing a 45µm. residue of 4.37% whilst that of cylpebs was 2.6kW after grinding for 295 minutes producin ...
The Magotteaux Mill®: investigating the effect of …
Cullinan (1999) completed more fundamental work examining the effect of the grinding environment on galena flotation. In these tests, 100 g of galena were ground in different mills: mild steel mill using forged high carbon low alloy steel balls; a stainless …