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Effect of grinding media and NaHS on copper recovery at ...

Nov 01, 2000  Effect of grinding media and Naris on copper recovery 1401 The addition rates of NariS were chosen for their significance in plant processing. The zero addition was selected to determine the effect of eliminating this expensive reagent on copper metallurgy. The addition of 100 g/t corresponded to the amount used in laboratory testing at the plant.Nov 01, 2000  Effect of grinding media and Naris on copper recovery 1401 The addition rates of NariS were chosen for their significance in plant processing. The zero addition was selected to determine the effect of eliminating this expensive reagent on copper metallurgy. The addition of 100 g/t corresponded to the amount used in laboratory testing at the plant.

Effect of grinding media and NaHS on copper recovery at ...

The addition of NaHS after grinding using mild steel rods increased the froth stability by increasing froth mineralisation, thus increasing the flotation kinetics of the copper minerals. When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use ...The addition of NaHS after grinding using mild steel rods increased the froth stability by increasing froth mineralisation, thus increasing the flotation kinetics of the copper minerals. When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use ...

Effect of grinding media and NaHS on copper recovery at ...

Download Citation Effect of grinding media and NaHS on copper recovery at Northparkes Mines The flotation behaviour of copper minerals in the Northparkes Mines copper-gold ore is dependent on ...Download Citation Effect of grinding media and NaHS on copper recovery at Northparkes Mines The flotation behaviour of copper minerals in the Northparkes Mines copper-gold ore is dependent on ...

Galvanic interaction between grinding media and ...

Feb 01, 2006  Effect of grinding media and NaHS on copper recovery at NorthParkes Mines Minerals Engineering , 13 ( 13 ) ( 2000 ) , pp. 1395 - 1403 Article Download PDF Feb 01, 2006  Effect of grinding media and NaHS on copper recovery at NorthParkes Mines Minerals Engineering , 13 ( 13 ) ( 2000 ) , pp. 1395 - 1403 Article Download PDF

Galvanic interaction between different grinding media

When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use was not warranted.When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use was not warranted.

sodium hydrosulphide mining chemical

effect of grinding media and nahs on copper recovery at the flotation behaviour of copper minerals in the northparkes mines with and without the addition of sodium hydrosulphide (nahs) in the conditioning stage. .. performance of sulphide minerals from merensky ore part i: pulp chemistry. snf flomin - mining technology mining news and views updatedeffect of grinding media and nahs on copper recovery at the flotation behaviour of copper minerals in the northparkes mines with and without the addition of sodium hydrosulphide (nahs) in the conditioning stage. .. performance of sulphide minerals from merensky ore part i: pulp chemistry. snf flomin - mining technology mining news and views updated

A review of the effects of the grinding environment on the ...

Jul 08, 2011  Effect of grinding media and NaHS on copper recovery at North Parkes Mines Minerals Engineering , 13 ( 13 ) ( 2000 ) , pp. 1395 - 1403 Article Download PDF View Record in Jul 08, 2011  Effect of grinding media and NaHS on copper recovery at North Parkes Mines Minerals Engineering , 13 ( 13 ) ( 2000 ) , pp. 1395 - 1403 Article Download PDF View Record in

A review of the effects of the grinding environment on the ...

Copper recovery has also been influenced by the grinding period; copper recovery has increased with increasing grinding time (Bruckard et al., 2011). Different concentration units have a feed size ...Copper recovery has also been influenced by the grinding period; copper recovery has increased with increasing grinding time (Bruckard et al., 2011). Different concentration units have a feed size ...

Interactive effects of the type of milling media and CuSO4 ...

When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use was not warranted.When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use was not warranted.

Minerals Engineering Conferences - Flotation 2000

Effect of grinding media and NaHs on copper recovery at Northparkes Mines W. A. Freeman, R. Newell and K. B. Quast (Australia) Statistical comparison of surface species in flotation concentrates and tails from TOF-SIMS evidence C. Piantadosi , M. Jasieniak, W. M. Skinner and R. St. C. Smart (Australia) Vol. 13 Nos. 14/15Effect of grinding media and NaHs on copper recovery at Northparkes Mines W. A. Freeman, R. Newell and K. B. Quast (Australia) Statistical comparison of surface species in flotation concentrates and tails from TOF-SIMS evidence C. Piantadosi , M. Jasieniak, W. M. Skinner and R. St. C. Smart (Australia) Vol. 13 Nos. 14/15

Interactive effects of the type of milling media and CuSO4 ...

Feb 01, 2006  Effect of grinding media and NaHS on copper recovery at Northparkes mines Minerals Engineering , 13 ( 13 ) ( 2000 ) , pp. 1395 - 1403 Article Download PDF View Record in Feb 01, 2006  Effect of grinding media and NaHS on copper recovery at Northparkes mines Minerals Engineering , 13 ( 13 ) ( 2000 ) , pp. 1395 - 1403 Article Download PDF View Record in

The recovery of oxide copper minerals from a complex ...

Mar 01, 2017  The higher water recovery is indicative of the NaHS increasing froth stability. For the slug sulphidisation procedure, increasing the NaHS dosage from 250 g/t to 500 g/t led to a 41% increase in water recovery (viz. from 237 g to 333 g) with a negligible increase in solids recovery (31.13 g to 31.52 g). Using the CPS procedure resulted in an ...Mar 01, 2017  The higher water recovery is indicative of the NaHS increasing froth stability. For the slug sulphidisation procedure, increasing the NaHS dosage from 250 g/t to 500 g/t led to a 41% increase in water recovery (viz. from 237 g to 333 g) with a negligible increase in solids recovery (31.13 g to 31.52 g). Using the CPS procedure resulted in an ...

Grinding Mill For Copper Mine - mayukhportfolio.co

Mine-to-mill optimisation: effect of feed size on mill ... - SRK Consulting. ... Effect of grinding media and NaHS on copper recovery at ... Effect of grinding media and NaHS on copper recovery at Northparkes Mines ... Article: Regrinding sulphide minerals — Breakage mechanisms in milling and...Mine-to-mill optimisation: effect of feed size on mill ... - SRK Consulting. ... Effect of grinding media and NaHS on copper recovery at ... Effect of grinding media and NaHS on copper recovery at Northparkes Mines ... Article: Regrinding sulphide minerals — Breakage mechanisms in milling and...

(PDF) Sulphidization to improve the nickel oxide recovery ...

[6] Freeman WA, Newell R, Quast KB, “ Effect of grinding media and NaHS on copper recovery at Northparkes mines, ” Minerals Engineering vol. 13, pp.1395-1403, 2000.[6] Freeman WA, Newell R, Quast KB, “ Effect of grinding media and NaHS on copper recovery at Northparkes mines, ” Minerals Engineering vol. 13, pp.1395-1403, 2000.

(PDF) Sulphidisation to improve the nickel oxide recovery ...

When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use was not warranted.When stainless steel grinding media was used, the copper flotation recovery was very high (>90 % in the rougher stage) without the addition of NaHS, so its use was not warranted.

Effect of Substrates During the Adaptation of Indigenous ...

Jun 04, 2017  The three media consisted of a media containing gray sulphur, another with yellow sulphur and a third one with pyrite. ... [12] Freeman, W., Newell, R. and Quast, K.B., Effect of grinding media and NaHS on Copper recovery at Northparkes Mines, Minerals Engineering, Vol. 13, No. 13, pp. 1395-1403, 2000. ... H. Kitagawa and M. Tsunekawa ...Jun 04, 2017  The three media consisted of a media containing gray sulphur, another with yellow sulphur and a third one with pyrite. ... [12] Freeman, W., Newell, R. and Quast, K.B., Effect of grinding media and NaHS on Copper recovery at Northparkes Mines, Minerals Engineering, Vol. 13, No. 13, pp. 1395-1403, 2000. ... H. Kitagawa and M. Tsunekawa ...

The effect of sodium hydrosulfide on molybdenite flotation ...

Nov 01, 2020  1. Introduction. Molybdenite, the principal mineral containing molybdenum, is closely associated with copper sulfides (Hirajima et al., 2014).The recovery of molybdenite from copper ores is usually achieved by bulk flotation to obtain a copper-molybdenum concentrate, followed by molybdenite flotation against copper sulfides in the presence of NaHS or Na 2 S (Ansari and Pawlik, 2007, Nov 01, 2020  1. Introduction. Molybdenite, the principal mineral containing molybdenum, is closely associated with copper sulfides (Hirajima et al., 2014).The recovery of molybdenite from copper ores is usually achieved by bulk flotation to obtain a copper-molybdenum concentrate, followed by molybdenite flotation against copper sulfides in the presence of NaHS or Na 2 S (Ansari and Pawlik, 2007,

Effect of pH on pulp potential and sulphide mineral ...

Furthermore, the effect of the mentioned parameters on galvanic interactions between minerals and grinding media in grinding circuits, as well as galvanic interactions between the minerals in ...Furthermore, the effect of the mentioned parameters on galvanic interactions between minerals and grinding media in grinding circuits, as well as galvanic interactions between the minerals in ...

Restoring the floatability of oxidised sulfides using ...

Oct 19, 2007  Fig. 1. Effect of oxidation upon sulfide mineral flotation recoveries (ultrasonic treatment and 1.37 × 10 − 2 M SIBX). Fig. 2 shows that sulfidisation restored the flotation recovery of the oxidised sulfide minerals in the Nkomati sample, with maximum floatability occurring at a Oct 19, 2007  Fig. 1. Effect of oxidation upon sulfide mineral flotation recoveries (ultrasonic treatment and 1.37 × 10 − 2 M SIBX). Fig. 2 shows that sulfidisation restored the flotation recovery of the oxidised sulfide minerals in the Nkomati sample, with maximum floatability occurring at a

OPTIMISATION OF THE SELECTIVE FLOTATION OF GALENA

mild steel grinding media. However, the recovery of galena was not affected after wet milling in a stainless steel mill. The recovery of Cu(II)-activated sphalerite was independent of the milling environment (wet or dry) and grinding media. The activation of sphalerite by cuprous cyanide complexes, which are present in themild steel grinding media. However, the recovery of galena was not affected after wet milling in a stainless steel mill. The recovery of Cu(II)-activated sphalerite was independent of the milling environment (wet or dry) and grinding media. The activation of sphalerite by cuprous cyanide complexes, which are present in the

(PDF) Copper Flotation: Effects of Particle Size, Grinding ...

Moreover, despite the positive effect of grinding time on the copper grade, the recovery did not vary significantly by increasing the grinding time to more than 22 minutes.Moreover, despite the positive effect of grinding time on the copper grade, the recovery did not vary significantly by increasing the grinding time to more than 22 minutes.

Minerals Engineering International Online - Froth ...

Performance of Vegetable Oils as Flotation Collectors for the Recovery of Coal from Coal Fines Wastes. Coal Preparation, Vol.21, No.4 (2000) ... W.A. Freeman, R. Newell, K.B. Quast. Effect of Grinding Media and NaHS on Copper Recovery at Northparkes Mines. Minerals Engineering, Vol.13, no.13, Nov. 2000. C. Weisener, A. Gerson. An Investigation ...Performance of Vegetable Oils as Flotation Collectors for the Recovery of Coal from Coal Fines Wastes. Coal Preparation, Vol.21, No.4 (2000) ... W.A. Freeman, R. Newell, K.B. Quast. Effect of Grinding Media and NaHS on Copper Recovery at Northparkes Mines. Minerals Engineering, Vol.13, no.13, Nov. 2000. C. Weisener, A. Gerson. An Investigation ...

Potential Processing Routes for Recovery of Platinum Group ...

Nov 06, 2017  Freeman W, Newell R, Quast K (2000) Effect of grinding media and NaHS on copper recovery at Northparkes Mines. Miner Eng 13(13):1395–1403. CAS Article Google Scholar 27. Kongolo K, Kipoka M, Minanga K, Mpoyo M (2003) Improving the efficiency of oxide copper–cobalt ores flotation by combination of sulphidisers.Nov 06, 2017  Freeman W, Newell R, Quast K (2000) Effect of grinding media and NaHS on copper recovery at Northparkes Mines. Miner Eng 13(13):1395–1403. CAS Article Google Scholar 27. Kongolo K, Kipoka M, Minanga K, Mpoyo M (2003) Improving the efficiency of oxide copper–cobalt ores flotation by combination of sulphidisers.

Flotation Archives — Page 9 of 23

The effects of operating variables on water transport to the overflow, classification of hydrophilic particles and the recovery of copper and molybdenum from a low-grade porphyry ore are presented. Recoveries of copper and molybdenum exceeding 90 percent at a grade of 8 percent Cu and 0.2 percent Mo were realized for minus 100 mesh (149 The effects of operating variables on water transport to the overflow, classification of hydrophilic particles and the recovery of copper and molybdenum from a low-grade porphyry ore are presented. Recoveries of copper and molybdenum exceeding 90 percent at a grade of 8 percent Cu and 0.2 percent Mo were realized for minus 100 mesh (149

The Effects of Water Recycling on Flotation at a North ...

The charges were ground to 56% passing 75 micrometres using a laboratory rod mill. The grinding media used was a combination of mild steel and stainless steel rods. The percent solids used in grinding was 60%. The laboratory rougher-scavenger flotation tests were done using a The charges were ground to 56% passing 75 micrometres using a laboratory rod mill. The grinding media used was a combination of mild steel and stainless steel rods. The percent solids used in grinding was 60%. The laboratory rougher-scavenger flotation tests were done using a

CN108431304B - Opportunity for recovery enhancement ...

There is provided a copper/molybdenum separation processor characterized by: a slurry/media mixing stage configured to receive, with an engineered polymeric hydrophobic media, a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron, and other minerals, the conditioned pulp conditioned with sodium hydrosulfide, and to provide a slurry/media mixture; and a slurry/media ...There is provided a copper/molybdenum separation processor characterized by: a slurry/media mixing stage configured to receive, with an engineered polymeric hydrophobic media, a conditioned pulp containing hydrophobic molybdenite and hydrophilic copper, iron, and other minerals, the conditioned pulp conditioned with sodium hydrosulfide, and to provide a slurry/media mixture; and a slurry/media ...

Mechanochemical Treatment to Remove Arsenic from Copper

This study tested the removal of arsenic from copper ore concentrate via a mechanochemical treatment by planetary ball milling. The harmful components of ore, such as arsenic, are increasing year by year and decreasing the copper grade, therefore there is a strong need to improve the separation of arsenic from copper ore. The effect of grinding as a result of chemical activation caused by ...This study tested the removal of arsenic from copper ore concentrate via a mechanochemical treatment by planetary ball milling. The harmful components of ore, such as arsenic, are increasing year by year and decreasing the copper grade, therefore there is a strong need to improve the separation of arsenic from copper ore. The effect of grinding as a result of chemical activation caused by ...

ORBi: Publications list

For each time interval a series of grinding-flotation tests using different grinding media alloys was completed. The grinding and flotation chemistry were compared and linked to the flotation behaviour of the ore samples. The results reveal that as oxidation progressed the copper metallurgy deteriorated. However, the deleterious effects of ...For each time interval a series of grinding-flotation tests using different grinding media alloys was completed. The grinding and flotation chemistry were compared and linked to the flotation behaviour of the ore samples. The results reveal that as oxidation progressed the copper metallurgy deteriorated. However, the deleterious effects of ...

XXV International Mineral Processing Congress (IMPC) 2010

The theme of IMPC 2010 was Smarter Processing for the Future'. IMPC attracts the best researchers and mineral processing practitioners from around the world and many contributed to the congress proceedings. The papers included in this 4150-page volume cover a broad range of topics, including transformational technologies, sustainability and energy utilisation, water recycling and frugal water ...The theme of IMPC 2010 was Smarter Processing for the Future'. IMPC attracts the best researchers and mineral processing practitioners from around the world and many contributed to the congress proceedings. The papers included in this 4150-page volume cover a broad range of topics, including transformational technologies, sustainability and energy utilisation, water recycling and frugal water ...

The method of extraction of nickel from spent nickel catalyst

The disadvantage of this method is not sufficiently high recovery and purity of the target product. Closest to the present invention is a method of extraction of Nickel from spent catalyst, including its dissolution in 60-70% nitric acid at 119-129 about With in 2-3 hours (USSR Author's certificate N 1011237; 22 In The disadvantage of this method is not sufficiently high recovery and purity of the target product. Closest to the present invention is a method of extraction of Nickel from spent catalyst, including its dissolution in 60-70% nitric acid at 119-129 about With in 2-3 hours (USSR Author's certificate N 1011237; 22 In

Mine tailing disposal sites: contamination problems ...

Nov 18, 2017  Mining practices and the absence of proper mine land reclamation has led to heavy metal contaminated sites with serious impact on the ecosystems and risk for human health. The origin of the contamination is often associated to mine tailing deposits because they are a source of the acid mine drainage (AMD). These areas are devoid of vegetation due to the harsh soil conditions that prevent Nov 18, 2017  Mining practices and the absence of proper mine land reclamation has led to heavy metal contaminated sites with serious impact on the ecosystems and risk for human health. The origin of the contamination is often associated to mine tailing deposits because they are a source of the acid mine drainage (AMD). These areas are devoid of vegetation due to the harsh soil conditions that prevent

effect of titanium in iron ore

The effect of copper on iron reduction and its application to the ... 19 Mar 2014 ... (2)Iron Ore Testing Centre, Ningbo Entry-Exit Inspection and ... titrant after reduction of the iron(III) by tin(II) chloride and/or titanium(III) chloride.The effect of copper on iron reduction and its application to the ... 19 Mar 2014 ... (2)Iron Ore Testing Centre, Ningbo Entry-Exit Inspection and ... titrant after reduction of the iron(III) by tin(II) chloride and/or titanium(III) chloride.

Oxidative pressure leach recovery of precious metals using ...

This was thought to be due to the cementation of gold chloride onto residual flakes of iron powder (introduced during fine grinding in a stirred mill with steel grinding media). [0091] Supporting this theory was the observation that gold recovery improved to ˜96% (Tests 6, 7) when the regrind media were changed to ceramic balls.This was thought to be due to the cementation of gold chloride onto residual flakes of iron powder (introduced during fine grinding in a stirred mill with steel grinding media). [0091] Supporting this theory was the observation that gold recovery improved to ˜96% (Tests 6, 7) when the regrind media were changed to ceramic balls.

copper ore economiccopper ore economy

Mar 17, 2020 Practically all of Arizona's exports of copper ore go to Mexico. From $4.2 million worth exported in 2002, the value increased to a staggering $1.6 billion in 2019. As shown in Figure 2, the exports of copper ore increased with the recovery from the Great Recession of 2008, and in 2015 reached the peak of the decade. Read MoreMar 17, 2020 Practically all of Arizona's exports of copper ore go to Mexico. From $4.2 million worth exported in 2002, the value increased to a staggering $1.6 billion in 2019. As shown in Figure 2, the exports of copper ore increased with the recovery from the Great Recession of 2008, and in 2015 reached the peak of the decade. Read More