CN101538648B - Method for activating ammonia leaching for high calcium-magnesium zinc oxide ore - Google Patents
Method for activating ammonia leaching for high calcium-magnesium zinc oxide ore Download PDFInfo
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- CN101538648B CN101538648B CN2009100942064A CN200910094206A CN101538648B CN 101538648 B CN101538648 B CN 101538648B CN 2009100942064 A CN2009100942064 A CN 2009100942064A CN 200910094206 A CN200910094206 A CN 200910094206A CN 101538648 B CN101538648 B CN 101538648B
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- ore
- ammonia
- zinc oxide
- zinc
- high calcium
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000002386 leaching Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 22
- WFAAYNUTSKDMEB-UHFFFAOYSA-N calcium magnesium zinc oxygen(2-) Chemical compound [O-2].[Ca+2].[O-2].[Mg+2].[O-2].[Zn+2] WFAAYNUTSKDMEB-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 230000003213 activating effect Effects 0.000 title abstract 6
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011737 fluorine Substances 0.000 claims abstract description 7
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 6
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 3
- 238000013019 agitation Methods 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000001238 wet grinding Methods 0.000 claims 1
- 239000011701 zinc Substances 0.000 abstract description 19
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 18
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052725 zinc Inorganic materials 0.000 abstract description 16
- 239000011787 zinc oxide Substances 0.000 abstract description 9
- 238000000227 grinding Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract 4
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 13
- 235000011114 ammonium hydroxide Nutrition 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 230000001698 pyrogenic effect Effects 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910001656 zinc mineral Inorganic materials 0.000 description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- PNHVEGMHOXTHMW-UHFFFAOYSA-N magnesium;zinc;oxygen(2-) Chemical compound [O-2].[O-2].[Mg+2].[Zn+2] PNHVEGMHOXTHMW-UHFFFAOYSA-N 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for activating ammonia leaching for high calcium-magnesium zinc oxide ore. The high calcium-magnesium zinc oxide ore is firstly crushed and wetly grinded, the content of the ore of which ore grinding fineness is less than 74mu m and accounts for 70 to 90 percent, ammonia and ammonium salt are added into the ore under normal pressure, the concentration of the total ammonia is 2 to 6 mol/L, the ratio of the liquid to solid is between 2 to 1 and 5 to 1, a fluorine-containing activating agent is added into the mixture, and the mixture is stirred and leached for 0.5 to 3 hours. Then, the stirred and leached ore slurry is subjected to solid-liquid separation to form leachate and leached residue. The result shows that the addition of the activating agent can improve the zinc leaching rate by 3 to 5 percent. By adding the fluorine-containing activating agent HF as an activating agent, the property of the zinc ore which is difficult to leach is changed, the ammonia dissolution of the zinc is promoted, and the aim of improving the leaching rate of the zinc in the zinc oxide ore is achieved.
Description
Technical field
The present invention relates to metallurgical technology field, particularly a kind of activation method of ammonia leaching for high calcium-magnesium zinc oxide ore.
Background technology
China's zinc oxide ore reserves are abundant, mainly comprise high-silicon type, high contents of calcium and magnesium type and transition type, nearly 3,000 ten thousand tons of zinc metal reserves.At present, the metallurgical treatment process of zinc oxide ore is divided pyrogenic process (is main with Rotary Kiln) and wet method two big classes.Pyrogenic process receives the restriction of national industrial policies because energy consumption is high, pollution is big, is replaced by wet method gradually.Wet method mainly comprises acid system and alkaline process, and acid system mainly is to leach with sulfuric acid, is applicable to the high-silicon type zinc oxide ore; Alkaline process mainly is ammonia leaching process (also useful NaOH leaches), is applicable to high contents of calcium and magnesium type zinc oxide ore.The use of pickling process is the most extensive, and its advantage is a technology maturation, and the recovery is high, compares significantly energy-saving and cost-reducing with pyrogenic process; Its shortcoming is that leach liquor is difficult for purifying, and equipment is perishable, the solid-liquid separation difficulty, and technical process is long, complex equipments.To the zinc oxide ore of high calcium-containing magnesium basic gangue, pickling process should not adopt because the acid consumption is too high, and therefore, ammonia leaching process becomes main research direction.The advantage of ammonia leaching process is: the selectivity of leaching is good, and basic gangue does not consume reagent, and leach liquor purifies easily, and solid-liquid separation is relatively easy, and is little to equipment corrosion.Its shortcoming is: leaching yield is not high under the normal pressure.
Summary of the invention
The objective of the invention is to soak the not high problem of leaching yield, provide a kind of ammonia of high contents of calcium and magnesium zinc oxide ore to soak activation method, to improve leaching yield to zinc oxide ore normal pressure ammonia.
Technical scheme of the present invention is:
(1) raw ore accounts for 70%～90% through muck, ore grinding to the content of＜74 μ m;
(2) ore milling product adds ammonia and ammonium salt under normal pressure, total ammonia concentration 2～6mol/L, and liquid-solid ratio 3: 1～5: 1 adds fluorine-containing acvator, agitation leach 0.5～3 hour;
(3) the agitation leach ore pulp is carried out solid-liquid separation, obtain leach liquor and soak slag.
Wherein, according to the composition of zinc mineral in the zinc oxide ore, raw ore per ton adds fluorine-containing acvator 60～200g, and fluorine-containing acvator is HF (hydrofluoric acid).
Characteristics of the present invention are that the adding of acvator has changed the character of difficult leaching zinc mineral, have promoted the wherein ammonia dissolving of zinc, have improved the leaching yield of zinc in the zinc oxide ore.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1:
Original ore property: Zn 10.26%, Pb 2.03%, and Fe 18.50%, and CaO 21.35%, and MgO 0.55%, SiO
213.71%.
Idiographic flow is following:
(1) raw ore accounts for 75% through muck, ore grinding to the content of＜74 μ m;
(2) ore milling product adds ammoniacal liquor and bicarbonate of ammonia under normal pressure, total ammonia concentration 4mol/L, and liquid-solid ratio 3: 1 adds HF 150g/t raw ore, agitation leach 2 hours;
(3) the agitation leach ore pulp is carried out solid-liquid separation, obtain leach liquor and soak slag.
Test-results:
Make that through in ammonia solution, adding the fluorochemical acvator content of zinc is 27.3g/L in the final immersion liquid, the leaching yield of zinc is 80.77%.Under same test conditions, do not add acvator, the leaching yield of zinc is 76.98%, leaching yield improves 3.79 percentage points.
Embodiment 2:
Original ore property: Zn 7.21%, Pb 0.51%, and Fe 10.15%, and CaO 18.13%, and MgO 2.54%, SiO
222.58%.
Idiographic flow is following:
(1) raw ore accounts for 85% through muck, ore grinding to the content of＜74 μ m;
(2) ore milling product adds ammoniacal liquor and volatile salt under normal pressure, total ammonia concentration 3.5mol/L, and liquid-solid ratio 4: 1 adds HF 200g/t raw ore, agitation leach 2.5 hours;
(3) the agitation leach ore pulp is carried out solid-liquid separation, obtain leach liquor and soak slag.
Test-results:
Make that through in ammonia solution, adding the fluorochemical acvator content of zinc is 13.19g/L in the final immersion liquid, the leaching yield of zinc is 73.57%.Under same test conditions, do not add acvator, the leaching yield of zinc is 70.51%, leaching yield improves 3.06 percentage points.
Embodiment 3:
Original ore property: Zn 12.37%, Pb 1.75%, and Fe 19.70%, and CaO 15.89%, and MgO 1.65%, SiO
218.93%.
Idiographic flow is following:
(1) raw ore accounts for 80% through muck, ore grinding to the content of＜74 μ m;
(2) ore milling product adds ammoniacal liquor and ammonium sulfate under normal pressure, total ammonia concentration 4.5mol/L, and liquid-solid ratio 4.5: 1 adds HF 60g/t raw ore, agitation leach 1.5 hours;
(3) the agitation leach ore pulp is carried out solid-liquid separation, obtain leach liquor and soak slag.
Test-results:
Make that through in ammonia solution, adding the fluorochemical acvator content of zinc is 22.32g/L in the final immersion liquid, the leaching yield of zinc is 82.46%.Under same test conditions, do not add acvator, the leaching yield of zinc is 77.52%, leaching yield improves 4.94 percentage points.
Claims (2)
1. the activation method of an ammonia leaching for high calcium-magnesium zinc oxide ore is characterized in that: carry out according to the following steps:
(1) raw ore accounts for 70%～90% through muck, wet grinding to the content of＜74 μ m;
(2) ore milling product adds ammonia and ammonium salt under normal pressure, total ammonia concentration 2～6mol/L, and liquid-solid ratio 3: 1～5: 1 adds fluorine-containing acvator, agitation leach 0.5～3 hour;
(3) the agitation leach ore pulp is carried out solid-liquid separation, obtain leach liquor and soak slag.
2. the activation method of ammonia leaching for high calcium-magnesium zinc oxide ore according to claim 1, it is characterized in that: fluorine-containing acvator is HF, raw ore per ton adds this acvator 60～200g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100942064A CN101538648B (en) | 2009-03-13 | 2009-03-13 | Method for activating ammonia leaching for high calcium-magnesium zinc oxide ore |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100942064A CN101538648B (en) | 2009-03-13 | 2009-03-13 | Method for activating ammonia leaching for high calcium-magnesium zinc oxide ore |
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| Publication Number | Publication Date |
|---|---|
| CN101538648A CN101538648A (en) | 2009-09-23 |
| CN101538648B true CN101538648B (en) | 2012-07-04 |
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|---|---|---|---|
| CN2009100942064A Expired - Fee Related CN101538648B (en) | 2009-03-13 | 2009-03-13 | Method for activating ammonia leaching for high calcium-magnesium zinc oxide ore |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA024717B8 (en) * | 2012-02-15 | 2017-01-30 | Металлик Уэйст Солюшнз Пти Лтд | Process for zinc oxide production from ore |
| CN102828032B (en) * | 2012-09-25 | 2015-03-11 | 四川锌鸿科技有限公司 | Method for producing lithopone by utilizing electrolytic zinc acid leaching slag |
| CN102826583B (en) * | 2012-09-25 | 2014-06-18 | 四川锌鸿科技有限公司 | Method for producing nano lithopone by using electrolytic zinc acid leaching slag |
| CN102828035B (en) * | 2012-09-25 | 2014-06-18 | 四川锌鸿科技有限公司 | Method for producing high-purity zinc oxide through decarbonization on electrolytic zinc acid leaching slag by adopting ammonia process |
| CN102838160B (en) * | 2012-09-25 | 2014-07-09 | 四川锌鸿科技有限公司 | Method utilizing low-grage zinc oxide mine compound waste gypsum to produce nanometer lithopone |
| US9346934B2 (en) | 2012-09-25 | 2016-05-24 | Sichuan Xinhong Technology Co., Ltd | Method for producing nanometer lithopone from electrolytic zinc acid leaching residue |
| CN102863013B (en) * | 2012-09-25 | 2014-06-18 | 四川锌鸿科技有限公司 | Method for producing lithopone by matching low-grade zinc oxide ores with gypsum |
| CN104294043A (en) * | 2014-09-25 | 2015-01-21 | 昆明理工大学 | Method for leaching high-calcium-magnesium zinc oxide ore |
| CN105018745B (en) * | 2015-07-29 | 2017-09-22 | 昆明理工大学 | A kind of method for cooperateing with coordination to reclaim zinc in oxysulphied zinc ore |
| RU2623519C1 (en) * | 2016-08-30 | 2017-06-27 | Игорь Олегович Цой | Method for recovery of zinc and copper oxides |
| CN112481508B (en) * | 2020-11-27 | 2022-09-09 | 韶关凯鸿纳米材料有限公司 | Low-degree steel plant flue gas furnace ash treatment method and device |
| CN116060214B (en) * | 2022-12-21 | 2023-07-21 | 昆明理工大学 | Multi-metal coupling activation flotation method for high-calcium siliceous zinc oxide ore |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2072641A (en) * | 1980-03-31 | 1981-10-07 | Samim Soc Azionaria Minerometa | Recovery of metallic zinc |
| CN1113520A (en) * | 1994-06-13 | 1995-12-20 | 北京矿冶研究总院 | Hydrometallurgical process for the recovery of copper and zinc from copper and zinc materials |
| CN1632141A (en) * | 2004-12-13 | 2005-06-29 | 冯志雄 | Method for acid ammonia extraction of zinc from high silicon high iron low grade zinc oxide ore |
| CN101314820A (en) * | 2007-05-28 | 2008-12-03 | 谷亮 | Method for producing zinc finemeal with zinc oxide mine or zinc slag |
-
2009
- 2009-03-13 CN CN2009100942064A patent/CN101538648B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2072641A (en) * | 1980-03-31 | 1981-10-07 | Samim Soc Azionaria Minerometa | Recovery of metallic zinc |
| CN1113520A (en) * | 1994-06-13 | 1995-12-20 | 北京矿冶研究总院 | Hydrometallurgical process for the recovery of copper and zinc from copper and zinc materials |
| CN1632141A (en) * | 2004-12-13 | 2005-06-29 | 冯志雄 | Method for acid ammonia extraction of zinc from high silicon high iron low grade zinc oxide ore |
| CN101314820A (en) * | 2007-05-28 | 2008-12-03 | 谷亮 | Method for producing zinc finemeal with zinc oxide mine or zinc slag |
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| CN101538648A (en) | 2009-09-23 |
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