CN103757248A - Method for leaching manganese carbonate ore - Google Patents
Method for leaching manganese carbonate ore Download PDFInfo
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- CN103757248A CN103757248A CN201310736420.1A CN201310736420A CN103757248A CN 103757248 A CN103757248 A CN 103757248A CN 201310736420 A CN201310736420 A CN 201310736420A CN 103757248 A CN103757248 A CN 103757248A
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- CN
- China
- Prior art keywords
- leaching
- sulfuric acid
- manganese carbonate
- carbonate ore
- manganese
- Prior art date
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for leaching manganese carbonate ore. The method comprises the steps of adding manganese carbonate ore powder, high-concentration organic wastewater which does not contain benzene-ring substances, and sulfuric acid into a reaction kettle which is resistant to the corrosion of sulfuric acid, and leaching while stirring.
Description
Technical field
The present invention relates to a kind of leaching method of manganese carbonate ore.
Background technology
Manganese carbonate ore is the important source material of producing the materials such as manganese metal, manganous sulfate, Manganse Dioxide, manganous nitrate.Wet processing is the main technique of producing above-mentioned materials, leaches the operation operation that is absolutely necessary in this technique.In producing the wet processing of manganese metal, manganous sulfate, Manganse Dioxide, substantially adopt sulfuric acid leaching system.Owing to containing certain MnO in manganese carbonate ore
2, MnO
2be insoluble to sulfuric acid, cause while adopting sulfuric acid leaching manganese carbonate ore, the leaching yield of metal target manganese is not high, causes the wasting of resources.Although add Fe in Leaching Systems
2+, the reductive agent such as glucose can improve the leaching yield of manganese, but add Fe
2+can increase the weight of the burden that subsequent solution purifies, add the leaching velocity of glucose slower, leach energy consumption and strengthen.The leaching method that exploitation leaching yield is high, leaching velocity is fast, energy consumption is low, do not increase the manganese carbonate ore of subsequent process burden has larger practical value.
Summary of the invention
The problem leaching for current manganese carbonate ore, the object of the invention is to find the leaching method of the manganese carbonate ore that a kind of leaching yield is high, it is characterized in that, by≤180 object manganous carbonate breezes, containing in the high concentrated organic wastewater of benzene ring substance and reactor that sulfuric acid adds sulfuric acid corrosion resistant, carrying out agitation leach.After leaching finishes, the slurry of emitting in reactor carries out solid-liquid separation, obtains required infusion solution.For the sulfuric acid starting point concentration that leaches, be 0.3mol/L～4mol/L, for the COD of the high concentrated organic wastewater that leaches
crconcentration>=10000mg/L.The add-on of sulfuric acid is by 103%～110% of the theoretical amount that in manganese carbonate ore, all manganese leaches.The add-on of high concentrated organic wastewater is with per kilogram MnO in manganese carbonate ore
2add COD
cr0.20 kilogram～0.25 kilogram calculating adds.The temperature of whole leaching process is 80 ℃～95 ℃, and stirring velocity is 50 r/min～130 r/min.Extraction time is 2h～4h.
The object of the present invention is achieved like this: under the condition existing at high concentrated organic wastewater, following chemical reaction mainly occurs sulfuric acid leaching manganese carbonate ore:
MnCO
3?+?H
2SO
4?=?MnSO
4?+?CO
2?+?H
2O
FeCO
3?+?H
2SO
4?=?FeSO
4?+?CO
2?+?H
2O
(C-H
xO
y)
m?+?2mMnO
2?+?2mH
+?=?2mMn
2+?+?mCO
2?+?zH
2O
Containing the organism in the high concentrated organic wastewater of benzene ring substance, do not there is stronger reducing power, and be dissolved state, be easy to and MnO
2contact reacts, and realizes MnO
2leach more completely.
Outstanding advantages of the present invention is: through above-mentioned reaction, finally make the Mn in manganese carbonate ore substantially leach completely, improved the leaching yield of Mn, reduce the wasting of resources; Utilize high concentrated organic wastewater to make oxygenant, not only for the improvement of high concentrated organic wastewater opens up a new way, and can reduce the leaching cost of pyrolusite, there is obvious economic benefit and environmental benefit.
specific implementation method
embodiment 1: 1000g manganous carbonate breeze (is contained to bivalent manganese 25.2%, tetravalence manganese 3.1%, Fe
2o
310.7%, particle diameter 180 orders) and fermentation drug manufacture waste water (containing COD
crit is in the stainless steel cauldron of 5L that the sulphuric acid soln 2700ml of the sulfuric acid concentration 2.0mol/L that 10000mg/L) 985mL and sulfuric acid are prepared adds volume, stirs (stirring velocity 80r/min) and leach 4h at 85 ℃～90 ℃.After finishing, leaching carries out the washing of liquid-solid separation and leached mud.According to the assay result of the leached mud after cleaning, the leaching yield of manganese is 99.1%.
Embodiment 2: 10kg manganous carbonate breeze (is contained to bivalent manganese 25.2%, tetravalence manganese 3.1%, Fe
2o
310.7%, particle diameter 180 orders) and 2.4L brewing wastewater (containing COD
crresidual electrolyte 50000mg/L) producing with the sulfuric acid concentration of sulfuric acid and the residual electrolyte preparation sulphuric acid soln 120L(electrolytic manganese factory that is 0.446mol/L is containing Mn
2+13.5g/L, H
2sO
434.5g/L) add in the stainless steel cauldron of 150L, at 90 ℃～95 ℃, stir (stirring velocity 60r/min) and leach 2h.After finishing, leaching carries out the washing of liquid-solid separation and leached mud.According to the assay result of the leached mud after cleaning, the leaching yield of manganese is 99.5%.
Claims (1)
1. the leaching method of a manganese carbonate ore, it is characterized in that by≤180 object manganous carbonate breezes, containing in the high concentrated organic wastewater of benzene ring substance and reactor that sulfuric acid adds sulfuric acid corrosion resistant, carry out agitation leach, after leaching finishes, the slurry of emitting in reactor carries out solid-liquid separation, obtaining required infusion solution, is 0.3mol/L～4mol/L for the sulfuric acid starting point concentration leaching, for the COD of the high concentrated organic wastewater that leaches
crconcentration>=10000mg/L, the add-on of sulfuric acid is that the add-on of high concentrated organic wastewater is with per kilogram MnO in manganese carbonate ore by 103%～110% of the theoretical amount that in manganese carbonate ore, all manganese leaches
2add COD
cr0.20 kilogram～0.25 kilogram calculating adds, and the temperature of whole leaching process is 80 ℃～95 ℃, and stirring velocity is 50 r/min～130 r/min, and extraction time is 2h～4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310736420.1A CN103757248A (en) | 2013-12-29 | 2013-12-29 | Method for leaching manganese carbonate ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310736420.1A CN103757248A (en) | 2013-12-29 | 2013-12-29 | Method for leaching manganese carbonate ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103757248A true CN103757248A (en) | 2014-04-30 |
Family
ID=50524562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310736420.1A Pending CN103757248A (en) | 2013-12-29 | 2013-12-29 | Method for leaching manganese carbonate ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103757248A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1940098A (en) * | 2006-09-21 | 2007-04-04 | 广西大学 | Gray manganese ore leaching out process |
| CN101886168A (en) * | 2010-07-14 | 2010-11-17 | 广西大学 | Extract technology of semi-manganese oxide ore |
-
2013
- 2013-12-29 CN CN201310736420.1A patent/CN103757248A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1940098A (en) * | 2006-09-21 | 2007-04-04 | 广西大学 | Gray manganese ore leaching out process |
| CN101886168A (en) * | 2010-07-14 | 2010-11-17 | 广西大学 | Extract technology of semi-manganese oxide ore |
Non-Patent Citations (1)
| Title |
|---|
| 粟海锋等: "硫酸-糖蜜酒精废液浸出锰矿的工艺研究", 《高校化学工程学报》 * |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |