The method of extraction of metal from ore or concentrate

 

The invention relates to a method of extracting metal from ore or concentrate containing Nickel and/or cobalt and other metals. The method includes acid leaching of the ore or concentrate under pressure receiving liquid containing Nickel and/or cobalt along with other metals in the slurry obtained by the oxidation under pressure, the first stage of deposition of the liquid at approximately pH 5 to 6 with obtaining solids containing metals, non-Nickel, and cobalt, and a solution containing Nickel and/or cobalt, the second stage of deposition of the resulting solution at some pH 7 to 8 with obtaining a solid substance containing Nickel and/or cobalt, and liquid depleted in Nickel and cobalt. Acid leaching under pressure is carried out at a pH less than 2 with obtaining fluid with pH value less than 2, containing essentially all of the Nickel and/or cobalt along with copper and/or zinc in the presence of them in the ore or concentrate. The technical result - the high-performance extraction of cobalt and Nickel at a low cost. 34 C.p. f-crystals., 5 Il.

Description text in facsimile form (see graphic part)m

2. The method according to p. 1, wherein the ore or concentrate is sulfide ore or concentrate and the acid leaching under pressure involves the oxidation under pressure in the presence of oxygen and an acidic solution containing halide ions and sulfate.

3. The method according to p. 1, characterized in that it further includes a step Ammon is sustained fashion from 6 to 8 with obtaining liquor, containing in solution Nickel, and solid residue.

4. The method according to p. 3, characterized in that it further includes a step of maintaining the percentage of solids in the solution during ammonium leaching at the maximum value of about 10%.

5. The method according to p. 4, characterized in that the maximum value is about 5%.

6. The method according to p. 4, characterized in that the Nickel concentration in the solution is maintained within the range of from about 5 g/l to about 20 g/L.

7. The method according to p. 6, characterized in that the concentration of Nickel supported by about 10 g/L.

8. The method according to p. 3, characterized in that the ore is laterite ore and the solid residue from the stage ammonium leaching additionally subjected to ammonium stage leaching with aqueous ammonia at a pH of from about 9 to about 9.5 with receipt of the liquid recycle to the stage ammonium leaching, and a solid substance containing manganese.

9. The method according to p. 1, characterized in that it further comprises a stage ammonium leaching solids containing Nickel and/or cobalt, ammonium solution at a pH of approximately 6 to 8 with obtaining liquor content which contains a stage of extraction of the liquor cobalt solvent in the presence of magnesium ions with getting rich cobalt extractant and a first raffinate, stage extraction solvent from the first raffinate magnesium obtaining enriched with magnesium extractant and a second raffinate and the stage of the extraction solvent from the second raffinate Nickel with obtaining enriched Nickel extractant and a third raffinate.

11. The method according to p. 10, characterized in that it is enriched with magnesium extractant recycle to the second stage of deposition.

12. The method according to p. 10, characterized in that at the stage of extraction of cobalt by solvent injected reducing agent to prevent oxidation of the Co2+in the Co3+.

13. The method according to p. 10, characterized in that at the stage of extraction of cobalt by solvent type antioxidant.

14. The method according to p. 10, characterized in that the enriched cobalt extractant is subjected to a first desorption at pH from about 3 to 3.5 with obtaining enriched with cobalt liquid and depleted in cobalt extractant, which is subjected to the second desorption at higher pH value of obtaining the liquid containing metals, non-cobalt, and desorbed extractant.

15. The method according to p. 10, characterized in that the extractants, enriched, respectively, cobalt and Nickel, is subjected to desorption of obtaining fluids enriched in want of cobalt and Nickel.

16. The method according to p. 1, wherein the acid leaching is carried out at pH1.

17. The method according to p. 2, characterized in that the halide is chloride or bromide.

18. The method according to p. 2, characterized in that the halide is chloride.

19. The method according to p. 18, characterized in that the concentration of chloride in the acid solution is from about 8 to about 20 g/L.

20. The method according to p. 19, characterized in that the concentration of chloride in the solution is about 12 g/L.

21. The method according to p. 2, characterized in that the oxidation under pressure is carried out at a pH value of from approximately 1.5 to approximately 1.

22. The method according to p. 1, characterized in that the ore is laterite ore and acid leaching is carried out at a temperature of from about 250 to about 280C.

23. The method according to p. 2, characterized in that the oxidation under pressure is carried out at a temperature of from about 120 to about 175C.

24. The method according to p. 23, characterized in that the temperature of the support is from about 120 to about 160C.

25. The method according to p. 2, characterized in that the oxidation under pressure p. 2, characterized in that the liquid from the stage of oxidation under pressure also contains copper, and the method further includes a step of extraction of the specified liquid copper at the stage of deposition of obtaining a solution of copper and depleted of copper raffinate, which is subjected to phase deposition.

27. The method according to p. 26, characterized in that the extraction of copper solvent is carried out in two stages with intermediate between stage neutralization.

28. The method according to p. 26, characterized in that the solution of copper subjected to electrolytic extraction with getting solid copper product and the depleted electrolyte.

29. The method according to p. 28, wherein the solvent extraction is realized by means of organic copper extractant with obtaining enriched copper extractant, and the method additionally includes the stage of desorption is enriched with copper extractant with getting desorbed extractant and recycling of the extractant on the stage of extraction of copper by solvent.

30. The method according to p. 29, characterized in that the desorption enriched copper extractant is realized by means of the spent electrolyte, which recycle from the stage electrolytic extraction of copper.

31. The method according to p. 2, deposits source of copper is a copper salt, copper ore or concentrate.

33. The method according to p. 26, characterized in that the solution of copper recycle on stage oxidation under pressure.

34. The method according to p. 2, characterized in that it further comprises a stage of extraction of the above-mentioned liquid zinc solvent before named stage deposition of obtaining zinc depleted solution and the zinc of the raffinate and the stage of deposition of the raffinate.

35. The method according to p. 2, characterized in that the first stage of deposition includes first deposition, which is carried out at a pH of about 3 to 4 with receipt of the first solid and first liquid, which is subjected to the second precipitation at pH of approximately from 5 to 6, to obtain the solids containing metals, non-Nickel, and cobalt, and a solution containing Nickel and cobalt.

 

Same patents:

The invention relates to ferrous metallurgy and can be used for treatment of industrial and domestic wastewater
The invention relates to chemical processing of manganese ores, in particular the production of concentrates chemical enrichment for metallurgical industry
The invention relates to the field of hydrometallurgy of platinum metals and can be used in chemical industry for production of metal powder of platinum from solutions of hexachloroplatinic acid with a concentration of 50 to 350 g/l for platinum

The invention relates to analytical chemistry of radioactive elements, and in particular to methods of radionuclides concentration with simultaneous separation of their

The invention relates to hydrometallurgy of precious, non-ferrous, rare, scattered, rare earth metals, separation of isotopes, inorganic synthesis, vol
The invention relates to the production of pure metallic palladium appropriate chemical form with minimum losses at all stages of chemical processing
The invention relates to the field of metallurgy and can be used, in particular, ferrous and nonferrous metallurgy to obtain vanadium pentoxide, niobium technical vanadium pentoxide, niobium, containing 50-95% V2ABOUT5and impurities of oxides of Fe, Cr, Mn, Al, Si, Mg, Cu, etc

The invention relates to the field of non-ferrous metallurgy, in particular to the technology of rare and scattered elements, and can be used for the recovery of indium from zinc sulfate solutions with a high content of silica

The invention relates to ferrous metallurgy and can be used for treatment of industrial and domestic wastewater

The invention relates to ferrous metallurgy and can be used for treatment of industrial and domestic wastewater

The invention relates to ferrous metallurgy and can be used for treatment of industrial and domestic wastewater

The invention relates to chemical technology, in particular to the processes occurring in the system liquid - liquid when exposed to electric current

The invention relates to hydrometallurgy and can be used to regenerate the production of solutions containing sulfuric acid, in particular upon receipt of titanium dioxide pigment in the production of electrolytic copper, upon receipt of sulfuric acid by the contact method, etc

The invention relates to the hydrometallurgical processing of ore concentrates, and more particularly to the processing of loparite concentrate and can be used in complex extraction of compounds of titanium, niobium and tantalum

The invention relates to a hydrometallurgical methods of mineral processing and may be used in the processing of uranium, thorium, rare earth ores and concentrates, as well as non-ferrous and precious metals

The invention relates to ferrous metallurgy and can be used for processing mixed fortraveling concentrates, obtaining calcium tungstate and compounds of tin
Up!