ammonium carbonate vs ammonium sulfate copper leaching
ammonium carbonate vs ammonium sulfate copper leaching
Zhengzhou, Henan China
24 hours At your service

ammonium carbonate vs ammonium sulfate copper leaching

  • Home
  • / Product
  • / ammonium carbonate vs ammonium sulfate copper leaching

ammonium carbonate vs ammonium sulfate copper leaching

Ammonium Carbonate Leaching Of Metal Values From Water (original sludge samples contained 5-9 percent copper and 0.8-1.2 percent nickel by weight on a dry basis.) however, some residual copper and nickel values in ,leaching of malachite ore in ammonium sulfate solutions and ,malachite ore is one of the most important of oxidized copper ores. copper production can be performed by using this ore ...

More

Behavior of Copper Dissolution in an Ammonia Solution ...

4.1 Dissolution of Cu in an ammonia solution containing ammonium sulfate In order to investigate a leaching behavior of copper, copper plates were immersed and stirred in a solution of 7 kmol m-3 NH 3 and 1 kmol m-3 (NH4)2SO4 containing 0.5 kmol m-3 Cu(II) at 313 K. The leaching ratio of copper

More

Ammoniacal leaching and recovery of copper from alloyed ...

2014-11-26  Leaching was carried out in the solutions containing: 0.5 M NH 3, 1 M ammonium salt (carbonate, chloride, sulfate or thiosulfate) and 50 mM Cu 2+ (as

More

Leaching kinetics of low-grade copper ore containing ...

2012-11-1  The leaching kinetics of copper from low-grade copper ore was investigated in ammonia-ammonium sulfate solution with sodium persulfate. The effect parameters of stirring speed, temperature, particle size, concentrations of ammonia, ammonium sulfate and sodium persulfate were determined.

More

(PDF) Ammonia Leaching: A New Approach of Copper

2021-11-10  The aqueous ammonium carbonate solution had a modeled initial pH of 9.2 and a high NH 3 concentration of 5.3 M (Table 3). For Cu and Zn, complexation with

More

Comparison of various extractants for recovery of

2021-11-10  JME Journal of Mining Environment, Vol.9, No.2, 2018, 393-402. DOI: 10.22044/jme.2017.6455.1465 Comparison of various extractants for recovery of Copper from Sarcheshmeh Chalcopyrite concentrate Ammonia/Ammonium Carbonate

More

Ammonia Leaching: A New Approach of Copper Industry

2013-12-10  Ammonia and ammonium salts have been recognized as effective leaching agents in hydrometallurgical processes due to low toxicity and cost, easy recovery and high selective recovery of metals. New research findings on considerable advantages of leaching by these agents and elimination of problems associated with acid leaching have resulted in a new approach in the world to this method.

More

(PDF) Dissolution Kinetics of Malachite in Ammonia ...

ammonia complexes in solution. The dissolution kinetics of malachite in ammonia/. ammonium carbonate solution is controlled by the. interface transfer and diffusion

More

LEACHING OF MALACHITE ORE IN AMMONIUM SULFATE

Experiments relating to the effect of stirring speed on the rate of copper leaching were carried out in the range from 200 to 600 rpm. In these tests, the ammonium sulfate concentration, solid to liquid ratio, particle size, and reaction temperature were kept constant at 4 mol/L, 2 g ore/500 mL solution, 62.4 μm, and 40 °C, respectively.

More

COPPER(II) EXTRACTION FROM AMMONIA LEACH

2013-9-7  Ammonia leaching of sulfide copper concentrates generate buffer type liquors (pH ranges from 9 to 10), because of the excess of ammonia and significant amount of ammonia sulfate as a leaching agent. Metals such as Cu, Ni, Co and Zn occur in ammonia systems as a cationic amminacomplexes. Alkalinity of the solution and free

More

Comparison of various extractants for recovery of

2021-11-10  JME Journal of Mining Environment, Vol.9, No.2, 2018, 393-402. DOI: 10.22044/jme.2017.6455.1465 Comparison of various extractants for recovery of Copper from Sarcheshmeh Chalcopyrite concentrate Ammonia/Ammonium Carbonate

More

Complex electronic waste treatment - An effective process ...

The copper recovery rate could reach 95% with ammonium carbonate as the leaching salt. In the stage of copper recovery from the solution, electrodeposition was introduced without an additional solvent extraction step and the electrochemical behaviour of the solution was figured out.

More

Ammonia Leaching: A New Approach of Copper Industry

2013-12-10  Ammonia and ammonium salts have been recognized as effective leaching agents in hydrometallurgical processes due to low toxicity and cost, easy recovery and high selective recovery of metals. New research findings on considerable advantages of leaching by these agents and elimination of problems associated with acid leaching have resulted in a new approach in the world to this method.

More

(PDF) Copper Recovery From Ammonia Solutions Through ...

2021-1-28  On leaching process of oxide and sulfured copper ores, sulfuric acid and ferric sulfate are. common reagents used as oxidizing media. ... malachite in ammonia/ammonium carbonate leaching.

More

(PDF) Ammonia leaching in the copper industry: a review

In this process, ammonia leaching of sulfide minerals of copper, nickel, cobalt and iron was conducted at a. temperature of about 105 °C and air pressure of 8 ATM. Under these c onditions, copper ...

More

COPPER(II) EXTRACTION FROM AMMONIA LEACH

2013-9-7  Ammonia leaching of sulfide copper concentrates generate buffer type liquors (pH ranges from 9 to 10), because of the excess of ammonia and significant amount of ammonia sulfate as a leaching agent. Metals such as Cu, Ni, Co and Zn occur in ammonia systems as a cationic amminacomplexes. Alkalinity of the solution and free

More

(PDF) Dissolution Kinetics of Malachite in Ammonia ...

ammonia complexes in solution. The dissolution kinetics of malachite in ammonia/. ammonium carbonate solution is controlled by the. interface transfer and diffusion across the product. layer both ...

More

Associated Sulfide Minerals in Thiosulfate Leaching of ...

2020-2-24  High copper concentration and a pre-aeration step was also found to largely increase the gold extractions under such conditions. Thiosulfate-copper-ethylenediamine system was found effective in the leaching of gold. The leaching kinetics was significantly slower than that of the conventional thiosulfate-copper-ammonia leaching.

More

Copper Sulfate and Other Copper Products

2020-5-8  11 CP Basic Sulfate, TriBasic Copper Sulfate, 12 Triangle Brand Copper Sulfate Crystal, 13 Diamond Copper Sulphate (Bluestone), plus 14 many others. 15 16 Other Copper Products: 17 Copper hydroxide. Cuprous oxide. Copper 18 carbonate. Copper ammonium carbonate. 19 Copper oxychloride. Copper octanoate. More

More

Nitrogen volatilisation: Factors affecting how much N is ...

2014-7-25  At five of the eight low calcium carbonate fallow paddocks, ammonia loss from ammonium sulfate was significantly less than from urea, 52% less on average. Similarly, Turner et al. (2012) measured 50% less ammonia volatilised from ammonium sulfate (2.8–12% of N applied), compared to urea at two in-crop paddocks in the Victorian Mallee.

More

Comparison of various extractants for recovery of

2021-11-10  JME Journal of Mining Environment, Vol.9, No.2, 2018, 393-402. DOI: 10.22044/jme.2017.6455.1465 Comparison of various extractants for recovery of Copper from Sarcheshmeh Chalcopyrite concentrate Ammonia/Ammonium Carbonate

More

Ammonium Carbonate Leaching Of Metal Values From

(5) No advantages were found to support the use of either ammonium sulfate leaching or ammonium hydroxide forti- fication of the ammonium carbonate leaching solution. (6) Ammonium carbonate leaching is a practical method for reducing the copper and nickel contents of sludges to

More

Complex electronic waste treatment - An effective process ...

The copper recovery rate could reach 95% with ammonium carbonate as the leaching salt. In the stage of copper recovery from the solution, electrodeposition was introduced without an additional solvent extraction step and the electrochemical behaviour of the solution was figured out.

More

Copper Recovery From Ammonia Solutions Through

2021-1-28  Alkaline leaching with highly selective ammoniacal complexing agents is an interesting alternative for the treatment of copper concentrates. This treatment is beneficial for copper recovery because it allows the formation of soluble amines complexes, with cupric tetramine ( Cu (NH 3) 4 2 +) being the most stable.In order to suppress the unit operation of solvent extraction (SX) and move ...

More

(PDF) Copper Recovery From Ammonia Solutions Through ...

2021-1-28  On leaching process of oxide and sulfured copper ores, sulfuric acid and ferric sulfate are. common reagents used as oxidizing media. ... malachite in ammonia/ammonium carbonate leaching.

More

Ammonium carbonate (NH4)2CO3 - PubChem

Modify. 2021-11-13. Create. 2005-03-27. Ammonium carbonate appears as a colorless crystalline solid or a white powder with a strong odor of ammonia. Noncombustible. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment.

More

Associated Sulfide Minerals in Thiosulfate Leaching of ...

2020-2-24  High copper concentration and a pre-aeration step was also found to largely increase the gold extractions under such conditions. Thiosulfate-copper-ethylenediamine system was found effective in the leaching of gold. The leaching kinetics was significantly slower than that of the conventional thiosulfate-copper-ammonia leaching.

More

Copper Sulfate and Other Copper Products

2020-5-8  11 CP Basic Sulfate, TriBasic Copper Sulfate, 12 Triangle Brand Copper Sulfate Crystal, 13 Diamond Copper Sulphate (Bluestone), plus 14 many others. 15 16 Other Copper Products: 17 Copper hydroxide. Cuprous oxide. Copper 18 carbonate. Copper ammonium carbonate. 19 Copper oxychloride. Copper octanoate. More

More

Thiosulfate-copper-ammonia leaching of pure gold and ...

2017-5-10  leaching ranges between 200 and 300 mV vs. SHE. In the absence of ammonia, or with excess copper, Cu2+ ions react with thiosulfate forming CuS 2 O 3-and S 4 O 6 2-ions (Byerley et al., 1973; Rabai and Epstein, 1992; Zhang and Nicol, 2003). The chemistry of thiosulfate leaching is complex (Aylmore and Muir, 2001) and

More

metallurgy - Leaching Britannica

metallurgy - metallurgy - Leaching: Oxides are leached with a sulfuric acid or sodium carbonate solvent, while sulfates can be leached with water or sulfuric acid. Ammonium hydroxide is used for native ores, carbonates, and sulfides, and sodium hydroxide is

More