CN101591732B - Process method using oxygen as oxidant in leaching process of manganese ore - Google Patents
Process method using oxygen as oxidant in leaching process of manganese ore Download PDFInfo
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- CN101591732B CN101591732B CN2009101040293A CN200910104029A CN101591732B CN 101591732 B CN101591732 B CN 101591732B CN 2009101040293 A CN2009101040293 A CN 2009101040293A CN 200910104029 A CN200910104029 A CN 200910104029A CN 101591732 B CN101591732 B CN 101591732B
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- manganese ore
- oxidant
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Abstract
The invention discloses a process method using oxygen as an oxidant in the leaching process of a manganese ore, which is characterized by comprising the following steps that: (1) the temperature condition is that the reaction temperature is controlled to be between 80 and 105 DEG C; (2) the pH condition is that the pH value of a leachate is controlled to be between 2.5 and 5.5; and (3) an ore pulp reaction tank bottom aeration method is adopted to introduce the oxygen or air into the bottom of a leaching tank, so that the oxygen or the air gets into the leachate from the bottom of the leaching tank. The process method uses the strong oxidizing property of the oxygen, is easy to remove Fe2+ by oxidizing the Fe2+ into Fe3+ under certain chemical condition, has obvious effect of removing iron ions in the process of producing electrolytic manganese metal, improves the resource utilization rate and the yield of the manganese ore, obviously reduces the smelting cost of the manganese ore, and has obvious economic benefit; besides, the oxidant is an environment-friendly oxidant which basically generates no extra pollutants and has obvious function of environmental protection.
Description
Technical field
The present invention relates to a kind of manganous carbonate method and produce the processing method of electrolytic metal Mn, especially in process of production, adopt oxygen as oxygenant the manganese ore leach liquor to be carried out in the leaching process of manganese ore of oxidation oxygen as the processing method of oxygenant.
Technical background
The manganous carbonate method is produced in the electrolytic metal Mn process both at home and abroad, must carry out the purifying treatment of deironing removing heavy metals to leach liquor, adopts the hydrolytic purification method usually.So-called hydrolytic purification method is exactly that the regulator solution pH value makes the not hydrolysis of base metal ion, and the foreign metal ion is removed with the oxyhydroxide form.Yet iron is often with Fe at a low price in the leach liquor
2+Exist, under lower pH value being can not be isolating with it, it must be oxidized to the Fe of high price
3+After could hydrolytic precipitation, therefore, it is extremely important to seek a kind of suitable oxygenant.
Oxygenant commonly used has O
3, H
2O
2, MnO
4-, ClO-, HNO
3, ClO
3, Cl
2, MnO
2, through the market rate of exchange, above-mentioned several oxygenant prices all compare expensive, and use range is very restricted; At present, widely used oxygenant is a natural manganese dioxide in the electrolytic metal Mn production process.But the Manganse Dioxide effective rate of utilization is low, produces a series of problems, as seriously polluted, serious waste of resources, removal heavy metal (Fe especially
2+) effect is undesirable, the rate of recovery of manganese ore is low etc., can not satisfy the needs in market.
Technology contents
The present invention is directed to prior art and produce the above-mentioned deficiency that adds oxygenant commonly used in the electrolytic metal Mn process, especially a series of environmental pollution and the wasting of resources problem of using the manganese dioxide powder oxidation to bring, provide the airborne oxygen of a kind of use as oxygenant, realize the Fe in the ore pulp
2+Be oxidized to Fe
3+, then in the leaching process of manganese ore of neutralization precipitation deironing oxygen as the processing method of oxygenant.On technology, change a series of environmental pollution and wasting of resources problem that traditional technology uses the manganese dioxide powder oxidation to bring.
Technical scheme of the present invention is: oxygen is characterized in that as the processing method of oxygenant in the leaching process of manganese ore:
(1), temperature condition is: temperature of reaction is controlled at 80-105 ℃;
(2), PH condition: the leach liquor pH value is controlled between the 2.5-5.5;
(3), adopt the ore pulp reaction tank bottom aeration, oxygen or air are passed into the leaching vat bottom, enter the leach liquor from the leaching vat bottom.
Further feature is: described temperature is between 85-90 ℃; PH value is controlled between the 3-5.
Oxygen with respect to prior art, has following characteristics as the processing method of oxygenant in the leaching process of manganese ore of the present invention:
1, utilizes the strong oxidizing property of oxygen, under certain electrochemical conditions, be easy to Fe
2+Be oxidized to Fe
3+And remove, the effect of removing iron ion in producing the electrolytic metal Mn process is obvious.
2, improve resource utilization, improve the rate of recovery of manganese ore, obviously reduce the smelting cost of manganese ore, have tangible economic benefit.
3, be environmentally friendly oxygenant, do not produce extra pollution substance basically, have tangible environment protection effect.
4, oxygen or air enter the leach liquor from the leaching vat bottom, slowly rise gradually from the bottom of leach liquor, and oxygen or air fully contact with leach liquor, can effectively solve Sauerstoffatom and contact inadequate problem with Fe2+.
Embodiment
Oxygen is characterized in that as the processing method of oxygenant in the leaching process of manganese ore of the present invention:
1, temperature condition is: temperature of reaction is controlled at 80-105 ℃;
2, PH condition: the leach liquor pH value is controlled between the 2.5-5.5;
3, adopt the ore pulp reaction tank bottom aeration, oxygen or air are passed into the leaching vat bottom, enter the leach liquor from the leaching vat bottom, oxygen or air slowly rise gradually from the bottom of leach liquor, oxygen or air fully contact with leach liquor, can effectively solve Sauerstoffatom and contact inadequate problem with Fe2+.
In oxidising process, optimum temps is stabilized between 85-90 ℃, and pH value is controlled between the 3-5.
The present invention mainly utilizes the strong oxidizing property of oxygen in the air, under certain electrochemical conditions, is easy to Fe
2+Be oxidized to Fe
3+, reaction formula is as follows:
4Fe
2++O
2+4H+＝4Fe
3++2H
2O
But under normal operation, the solubleness of oxygen in solution is very low, and the utilization ratio of oxygen is not high, can't normal use in technology deironing link, my technician of company has finally drawn dioxygen oxidation Fe by to a series of a large amount of experiments
2+Oxidation efficiency and the relation of factors such as temperature, pressure, PH, and final by accurate control to these factors, realized that oxygen replaces the leaching link deironing of Manganse Dioxide at manganese ore.
Specific embodiment is as follows:
1, by purchasing air compressor, utilize airline that high pressure gas are incorporated in the leaching vat.Perhaps oxygen is incorporated in the leaching vat by pipeline.
2, install aerating apparatus additional in leaching vat bottoms, air or oxygen is entered the leach liquor from the aerating apparatus of leaching vat bottom,, Sauerstoffatom is fully contacted with Fe2+ to realize fully contacting of air or oxygen and ore pulp.
3, breeze is in leaching process, reacting with sulfuric acid to produce a large amount of heat energy, and can take away a part of heat in the aeration process of air, by the reach of oxidation link and adopt two processes effectively to control, can make temperature-stable between 85-90 ℃, save energy.
4, in oxidising process, pH value is controlled between the 3-5 and is advisable.
Claims (2)
1. oxygen is characterized in that as the processing method of oxygenant in the leaching process of manganese ore:
(1), temperature condition is: temperature of reaction is controlled at 85-105 ℃;
(2), pH value condition: the leach liquor pH value is controlled between the 2.5-5;
(3), adopt the ore pulp reaction tank bottom aeration, oxygen or air are passed into the leaching vat bottom, enter the leach liquor from the leaching vat bottom.
2. oxygen is characterized in that as the processing method of oxygenant in the leaching process of manganese ore according to claim 1: described temperature is between 85-90 ℃; PH value is controlled between the 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101040293A CN101591732B (en) | 2009-06-08 | 2009-06-08 | Process method using oxygen as oxidant in leaching process of manganese ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101040293A CN101591732B (en) | 2009-06-08 | 2009-06-08 | Process method using oxygen as oxidant in leaching process of manganese ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101591732A CN101591732A (en) | 2009-12-02 |
| CN101591732B true CN101591732B (en) | 2011-01-19 |
Family
ID=41406610
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|---|---|---|---|
| CN2009101040293A Active CN101591732B (en) | 2009-06-08 | 2009-06-08 | Process method using oxygen as oxidant in leaching process of manganese ore |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191378B (en) * | 2010-03-15 | 2013-12-18 | 贵州省环境科学研究设计院 | Electrolyte preparation process for electrolyzing manganese |
| CN101892383B (en) * | 2010-06-30 | 2012-05-23 | 重庆大学 | Reinforced leaching de-ironing device and de-ironing method of manganese ore slurry |
| CN115386744B (en) * | 2022-08-18 | 2024-02-02 | 铜仁学院 | Method for high-value utilization of manganese anode slime |
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2009
- 2009-06-08 CN CN2009101040293A patent/CN101591732B/en active Active
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| CN101591732A (en) | 2009-12-02 |
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Effective date of registration: 20220630 Address after: 554199 4th floor, Economic Development Zone Management Committee, Songtao Miao Autonomous County, Tongren City, Guizhou Province Patentee after: GUIZHOU WULING MANGANESE INDUSTRY Co.,Ltd. Address before: 409912 Xiushan Town, Xiushan County, Chongqing Chongqing Wuling Manganese Industry Co., Ltd. Patentee before: Chongqing Wuling Manganese Industry Corp. |
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