CN102139182B - Acid mist purifying method in electrolytic manganese leaching process - Google Patents
Acid mist purifying method in electrolytic manganese leaching process Download PDFInfo
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- CN102139182B CN102139182B CN2011100242488A CN201110024248A CN102139182B CN 102139182 B CN102139182 B CN 102139182B CN 2011100242488 A CN2011100242488 A CN 2011100242488A CN 201110024248 A CN201110024248 A CN 201110024248A CN 102139182 B CN102139182 B CN 102139182B
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- acid mist
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- waste water
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- alkaline waste
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- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The invention discloses an acid mist purifying method in the electrolytic manganese leaching process, which comprises the steps of: (1) collecting acid mist, and delivering the acid mist to a purifying device through a pipeline; (2) purifying the acid mist in the purifying device; (3) delivering the acid mist to a spraying and neutralizing device and manganese-containing alkaline waste water to apart above or inside the spraying and neutralizing device through a pipeline, and neutralizing the manganese-containing alkaline waste water and CO2 gas in the acid mist; and (4) delivering the gas to a spraying and cooling device for cooling and steam removal, delivering the manganese-containing alkaline waste water to a part above or inside the spraying and cooling device through a pipeline, and spraying the manganese-containing alkaline waste water to carry out neutralization reaction with CO2 gas and sulfuric acid mist in the acid mist. The purifying method disclosed by the invention can prevent the acid mist from entering the atmosphere, fundamentally achieves the purpose of zero emission of acid mist, and avoids pollution of sulfuric acid mist to the environment; and the treatment and resource utilization of the manganese-containing alkaline waste water are realized, thus the manganese resource is saved; and the health of workers is effectively protected.
Description
Technical field
The present invention relates to acid mist purifying is processed in a kind of manganese metal smelting process method, especially acid mist purifying method in electrolytic manganese leaching process.
Background technology
In the electrolytic manganese machining process, (electrolytic manganese leaching station) can produce a large amount of white smoke in the leaching process of manganese ore, its main component be water vapour,
Gas and a small amount of sulfuric acid mist gas.Because the proportion of this mist is larger, often can form the thicker cloud and mist of one deck on ground, production scene, the site operation personnel is called it " acid mist "; This acid mist not only pollutes atmospheric environment, also the safe operation of producing has been consisted of certain threat; In addition, this acid mist has consisted of very large threat to execute-in-place workman healthy, stimulates execute-in-place workman's the organs such as throat, eyes, nose, damages its health.In the prior art, because a variety of causes is not processed substantially to acid mist, perhaps be just to drain into atmosphere after simple exhausting is collected, in contaminated environment, also wasted resource, do not meet the requirement of energy-saving and emission-reduction, circulation production.
Summary of the invention
The present invention is directed to prior art and there is no that the acid mist that produces in the leaching process to manganese ore processes, not only contaminated environment, but also damage execute-in-place workman's healthy, waste resource, to producing deficiencies such as consisting of potential safety hazard, a kind of acid mist purifying method in electrolytic manganese leaching process that acid mist can be collected, purifies, processed is provided.The method is with the acid mist collecting that produces in the leaching process of manganese ore, through removing wherein after the neutralization reaction processing
Gas and a small amount of sulfuric acid mist gas are removed steam after spraying solidifying cooling, in discharging, while utility wherein can be recycled, and has saved resource behind the meet the requirement of environmental protection.
Technical scheme of the present invention: acid mist purifying method in electrolytic manganese leaching process is characterized in that comprising the steps:
(1) acid mist collecting is got up, be transported to purifying processing device by pipeline; Usually above electrolytic manganese leaches station, arrange and collect the exhausting gathering-device that acid mist is used, the negative pressure that forms by exhausting with acid mist,
The suctions such as gas enter the pipeline of exhausting gathering-device;
(2) in purifying processing device, carry out purified treatment, to eliminate or to remove the solid particulate matter that comprises the breeze dust, can prevent the obstruction of purifying processing device packed tower;
(3) gas after the purified treatment is transported to the solidifying cooling device of spray, carries out cooling de-watering steam; Along with the reduction of temperature, water vapour cooling in the solidifying cooling device of spray forms the globule, separates from gas;
(4) will be transported to the sprinkling neutralising arrangement through the gas that the solidifying cooling device of spray is processed, carry out neutralization reaction; To contain the manganese alkaline waste water and be transported to by pipeline and spray neutralising arrangement top or its inside, contain the manganese alkaline waste water and spray, with in the gas
Gas and sulfuric acid mist carry out neutralization reaction,
Gas, sulfuric acid mist and contain the manganese alkaline waste water and react enter in the water and separate from gas; Gas through spraying after neutralising arrangement is processed is entered atmosphere.Acid mist is transported to sprinkling neutralisation treatment device, will contains the manganese alkaline waste water and be transported to sprinkling neutralisation treatment device top or its inside by pipeline, contain the manganese alkaline waste water and spray, with the CO in the acid mist
2Gas and sulfuric acid mist carry out neutralization reaction, remove CO wherein
2Gas and sulfuric acid mist;
(5) will filter through spraying the reacted manganese alkaline waste water that contains of neutralising arrangement, solids of sedimentation reclaims as manganese ore and uses; The manganese alkaline waste water that contains after the filtration enters the Mn-bearing waste water gathering system, after the pH value of routine is regulated processing, ammonia-nitrogen desorption processing, enters again sprinkling neutralising arrangement top or its inner loop and uses, and CO is removed in participation
2In gas and the sulfuric acid mist and the reaction.
Further feature is: will contain the manganese alkaline waste water and be transported in the solidifying cooling device of spray by pipeline, square from it or its inner spraying is with the CO in the gas
2Gas and sulfuric acid mist carry out neutralization reaction.
Further feature is: solid, the liquid that will spray in the solidifying cooling device of neutralisation treatment device and spray carry out the Separation of Solid and Liquid processing, and liquid wherein enters by pipeline and contains manganese alkaline waste water pond and recycle the MnCO of solid
3As the resource of manganese spar by conduct refining manganese after collecting.
Acid mist purifying method in electrolytic manganese leaching process of the present invention has following features:
1, the acid mist that produces in the leaching process of manganese ore is at first collected, prevent that acid mist from entering atmosphere, basically can accomplish the acid mist zero-emission, stop sulfuric acid mist to the pollution of environment, very obvious to the effect of environmental protection.
2, recycling Mn-bearing waste water has been realized processing and the recycling of Mn-bearing waste water; Save the manganese resource, obtained good economic benefit.
3, stop the infringement of acid mist to execute-in-place workman health, effectively protected workman's health.
4, eliminated the potential safety hazard that acid mist consists of the production scene, what ensure safety in production carries out smoothly.
Description of drawings
Fig. 1 is the inventive method schematic flow sheet.
The specific embodiment
In Fig. 1, in the electrolytic manganese machining process, in the leaching process of manganese ore, leaching barrel or leaching tanks can produce a large amount of white smoke, and its main component is water vapour, CO
2Gas and a small amount of sulfuric acid mist gas become acid mist.The present invention comprises the steps: the processing method of this acid mist
1, acid mist collecting is got up, be transported to purifying processing device by pipeline; Specifically can above leaching barrel or leaching tanks or around it, draught hood be set by extractor fan commonly used, acid mist collecting in extractor fan, is transported to purifying processing device by the pipeline that is connected again.
2, in purifying processing device, carry out purified treatment, to eliminate or to remove the solid particle that comprises the breeze dust, comprise the solid particle that some granularity is less, can effectively prevent the obstruction of purifying processing device packed tower.
3, will be transported to through the gas of purified treatment the solidifying cooling device of spray, carry out cooling de-watering steam;
Can be transported to sprinkling neutralisation treatment device top or its inside by pipeline with containing the manganese alkaline waste water, contain the manganese alkaline waste water and spray, with the CO in the acid mist
2Gas and sulfuric acid mist carry out neutralization reaction, remove most of or most CO wherein
2Gas and sulfuric acid mist; The solid that spray is coagulated in the cooling processing device (mainly is MnCO
3Precipitation etc.), liquid carries out Separation of Solid and Liquid and processes, liquid wherein enters Mn-bearing waste water pond (alkaline waste water pond, slag field) by pipeline and recycles, the MnCO of solid
3As the resource of manganese spar by conduct refining manganese after collecting, recycled.
Its reaction equation is:
CO
2+Mn（OH）
2=MnCO
3↓+H
2O (1)
H
2SO
4+ Mn（OH）
2=MnSO
4+H
2O （2）
Can find out CO by formula (1)
2Gas is neutralized to be removed, and Mn-bearing waste water also is converted into MnCO
3Precipitation, and MnCO
3Current electrolysis manganese is produced the manganese compound that contains of raw materials used manganese spar just, can reclaim recycling after collecting.
The manganese alkaline waste water that contains below the sprinkling neutralisation treatment device is filtered, and solids of sedimentation reclaims as manganese ore and uses; The manganese alkaline waste water that contains after the filtration enters the Mn-bearing waste water gathering system, after the pH value of routine is regulated processing, ammonia-nitrogen desorption processing, enters again sprinkling neutralising arrangement top or its inner loop and uses, and CO is removed in participation
2In gas and the sulfuric acid mist and the reaction.
4, will spray gas after the solidifying cooling processing and be transported to and spray the neutralisation treatment device, will contain the manganese alkaline waste water and be transported to by pipeline and spray neutralisation treatment device top or its inside, and contain the manganese alkaline waste water and spray, with the CO in the acid mist
2Gas and sulfuric acid mist carry out neutralization reaction, remove most of or most CO wherein
2Gas and sulfuric acid mist; Its reaction equation is:
CO
2+Mn（OH）
2=MnCO
3↓+H
2O (1)
H
2SO
4+ Mn（OH）
2=MnSO
4+H
2O （2）
Can find out CO by formula (1)
2Gas is neutralized to be removed, and Mn-bearing waste water also is converted into MnCO
3Precipitation, and MnCO
3Current electrolysis manganese is produced the manganese compound that contains of raw materials used manganese spar just, can reclaim recycling after collecting.
5, in order further to remove the CO in the acid mist
2Gas and sulfuric acid mist will contain the manganese alkaline waste water and be transported to spray solidifying cooling device top or its inside by pipeline, contain the manganese alkaline waste water and will spray, with the CO in the acid mist
2Gas and sulfuric acid mist carry out neutralization reaction, further remove CO wherein
2Gas and sulfuric acid mist guarantee CO
2The content of gas and sulfuric acid mist is low as far as possible, drains into atmosphere after reaching relevant emission standards.(mainly be MnCO to the solid that sprays in the solidifying cooling device equally
3Precipitation etc.), liquid carries out filtration treatment, makes Separation of Solid and Liquid, liquid wherein enters Mn-bearing waste water pond (alkaline waste water pond, slag field) by pipeline, regulates through the pH value of routine to process, after ammonia-nitrogen desorption processes, recycled the MnCO of solid
3As the resource of manganese spar by conduct refining manganese after collecting, recycled.
The applicant is in the production scene, and by repetition test repeatedly, method of the present invention can effectively be removed water vapour, CO
2Gas and sulfuric acid mist gas can reach relevant emission standards fully, have avoided environmental pollution, that resource is able to is recycling, effectively protects workman's health.
Claims (2)
1. acid mist purifying method in electrolytic manganese leaching process is characterized in that comprising the steps:
(1) acid mist collecting is got up, be transported to purifying processing device by pipeline;
(2) in purifying processing device, carry out purified treatment, to remove the solid particle that comprises the breeze dust;
(3) acid mist after the purified treatment is transported to the solidifying cooling processing device of spray, carries out cooling de-watering steam;
(4) will be transported to the sprinkling neutralising arrangement through the gas of the solidifying cooling processing of spray, will contain the manganese alkaline waste water and be transported to sprinkling neutralising arrangement top or its inside by pipeline, and contain the manganese alkaline waste water and spray, with the CO in the acid mist
2Gas and sulfuric acid mist carry out neutralization reaction; Gas through spraying after neutralising arrangement is processed is entered atmosphere;
Solid, the liquid that (5) will spray in the solidifying cooling device carry out filtration treatment, make Separation of Solid and Liquid, and liquid wherein enters by pipeline and contains manganese alkaline waste water pond, recycle the MnCO of solid after routine is processed
3As the resource of manganese spar by conduct refining manganese after collecting.
2. described acid mist purifying method in electrolytic manganese leaching process according to claim 1 is characterized in that: will contain the manganese alkaline waste water and be transported to spray solidifying cooling device top or its inside by pipeline, and contain the manganese alkaline waste water and spray, with the CO in the acid mist
2Gas and sulfuric acid mist carry out neutralization reaction; The solid, the liquid that spray in the neutralisation treatment device are carried out the Separation of Solid and Liquid processing, and liquid wherein enters by pipeline and contains manganese alkaline waste water pond, after the Ph of routine value is regulated processing, ammonia-nitrogen desorption processing, recycles; The MnCO of solid
3As the resource of manganese spar by conduct refining manganese after collecting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100242488A CN102139182B (en) | 2011-01-21 | 2011-01-21 | Acid mist purifying method in electrolytic manganese leaching process |
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|---|---|---|---|
| CN2011100242488A CN102139182B (en) | 2011-01-21 | 2011-01-21 | Acid mist purifying method in electrolytic manganese leaching process |
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| CN102139182A CN102139182A (en) | 2011-08-03 |
| CN102139182B true CN102139182B (en) | 2013-01-02 |
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| US20140353886A1 (en) * | 2013-05-29 | 2014-12-04 | Air Products And Chemicals, Inc. | Purification, Recovery, and Recycle of Vent Gas |
| CL2015002882A1 (en) * | 2015-09-25 | 2016-04-15 | Univ Católica Del Norte | Device, method and system for the online monitoring of the concentration of acid mist |
| CN107522324B (en) * | 2017-10-23 | 2020-10-13 | 贵州松桃金瑞锰业有限责任公司 | Process for recovering manganese in electrolytic manganese production wastewater and comprehensively treating wastewater and waste gas |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376080A (en) * | 2007-08-27 | 2009-03-04 | 战英豪 | Method for purifying and processing waste gas from acid washing process of stainless steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376080A (en) * | 2007-08-27 | 2009-03-04 | 战英豪 | Method for purifying and processing waste gas from acid washing process of stainless steel |
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Effective date of registration: 20220623 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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