CN101070213A - Method for increasing manganese utilizing rate by secondary neutralizing manganese sulfate - Google Patents
Method for increasing manganese utilizing rate by secondary neutralizing manganese sulfate Download PDFInfo
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- CN101070213A CN101070213A CN 200710052487 CN200710052487A CN101070213A CN 101070213 A CN101070213 A CN 101070213A CN 200710052487 CN200710052487 CN 200710052487 CN 200710052487 A CN200710052487 A CN 200710052487A CN 101070213 A CN101070213 A CN 101070213A
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- manganese
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- filter residue
- lime
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Abstract
This invention relates to a method of quadric neutralizing manganese sulfate used liquid to advance manganic utilization ratio. Input manganese sulfate used liquid generated by oxidizing aniline using pyrolusite to neutralizing tank, add lime to neutralize PH to 3-4, filtration, take filtrate, filter residue is disposed by moving out; add lime to filtrate to neutralize PH to 3-7, filtration, add overdosage ammonium bicarbonate to filtrate to prepare manganese carbonate, filter residue return to neutralizing tank to participate forthcoming neutralization. This invention adopts quadric neutralizing manganese sulfate used liquid, first order dregs moving out, second dreg returning to neutralizing tank as neutralizer, can advance manganic utilization ratio 3 to 5%, possess notable economic benefit.
Description
Technical field
The present invention relates to a kind of treatment process that adopts the manganous sulfate waste liquid that pyrolusite does and produce in the oxidant production manganous sulfate technology, particularly a kind of secondary neutralisation of sulphuric acid manganese waste liquid improves the method for the utilization ratio of manganese.
Background material
Do in the oxidant production manganous sulfate technology at the employing pyrolusite, the manganous sulfate waste liquid that produces through vitriolization manganese ore powder is than strongly-acid, need through alkaline matter neutralizing treatment such as lime, its pH value is reached more than 5, to remove wherein most of impurity such as iron etc., but because in the N-process, useful mn ion also precipitates under alkaline condition, reaction formula is as follows:
MnSO
4+CaO+H
2O＝Mn(OH)
2↓+CaSO
4
Greater than 3 o'clock, the manganous hydroxide precipitation in the solution began to produce at PH in evidence, and manganese enters waste residue with the manganous hydroxide precipitation forms, and is together discarded, caused the waste of resource.
Summary of the invention
Purpose of the present invention just provides the method that a kind of secondary neutralisation of sulphuric acid manganese waste liquid improves the utilization ratio of manganese, this method adopts secondary neutralisation of sulphuric acid manganese waste liquid, the primary slag outward transport, and the secondary slag returns neutralizing well and makes neutralizing agent, can improve the utilization ratio 3-5% of manganese, have remarkable economic efficiency.
The object of the present invention is achieved like this: a kind of secondary neutralisation of sulphuric acid manganese waste liquid improves the method for the utilization ratio of manganese, and it comprises the following steps:
A. neutralizing treatment: will drop in the neutralizing well with the manganous sulfate waste liquid that pyrolusite oxidation aniline produces, add in the lime and PH to 3-4, filter, get filtrate, the filter residue outward transport is handled;
B. secondary neutralizing treatment: the filtrate that step a is produced adds in the lime and PH to 3-7, filters, and filtrate adds excessive bicarbonate of ammonia and prepares manganous carbonate, and filter residue returns in the neutralizing well of step a, participates in neutralization reaction next time.
The present invention adopts secondary neutralisation of sulphuric acid manganese waste liquid, the primary slag outward transport, and the secondary slag returns neutralizing well and makes neutralizing agent, can improve the utilization ratio 3-5% of manganese, has remarkable economic efficiency.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1: the manganous sulfate waste liquid 1L (sulfur acid manganese 15%) that will produce with pyrolusite oxidation aniline, add in the lime and PH to 3, filter, the filter residue outward transport is handled, and filtrate adds in the lime and PH to 4 again, filters, filter residue returns the neutralization that is used for the same manganous sulfate waste liquid of another part in the neutralizing well, filtrate adds excessive bicarbonate of ammonia and prepares manganous carbonate, gets manganous carbonate 105 grams after washing, drying, and the utilization ratio of manganese improves 3%.
Embodiment 2: the manganese sulfate solution 1L (sulfur acid manganese 15%) that will produce with pyrolusite oxidation aniline, add in the lime and PH to 4, filter, the filter residue outward transport is handled, and filtrate adds in the lime and PH to 4 again, filters, filter residue returns the neutralization that is used for the same manganous sulfate waste liquid of another part in the neutralizing well, filtrate adds excessive bicarbonate of ammonia and prepares manganous carbonate, gets manganous carbonate 205 grams after washing, drying, and the utilization ratio of manganese improves 3.5%.
Embodiment 3: the manganous sulfate waste liquid 1L (sulfur acid manganese 15%) that will produce with pyrolusite oxidation aniline, add in the lime and PH to 4, filter, the filter residue outward transport is handled, filtrate adds in the lime and PH to 5 again, filters, and filter residue returns the neutralization that is used for the same manganous sulfate waste liquid of another part in the neutralizing well, filtrate adds excessive bicarbonate of ammonia and prepares manganous carbonate, gets manganous carbonate 120 grams after washing, drying.The utilization ratio of manganese improves 4%.
Embodiment 4: the manganous sulfate waste liquid 1L (sulfur acid manganese 15%) that will produce with pyrolusite oxidation aniline, add in the lime and PH to 4, filter, filter residue outward transport is handled, filtrate add in the lime again and PH to=7, filter, filter residue returns the neutralization that is used for the same manganese sulfate solution of another part in the neutralizing well, filtrate adds excessive bicarbonate of ammonia and prepares manganous carbonate, gets manganous carbonate 215 grams after washing, drying, and the utilization ratio of manganese improves 5%.
Claims (1)
1, a kind of secondary neutralisation of sulphuric acid manganese waste liquid improves the method for the utilization ratio of manganese, it is characterized in that it comprises the following steps:
A. neutralizing treatment: will drop in the neutralizing well with the manganous sulfate waste liquid that pyrolusite oxidation aniline produces, add in the lime and PH to 3-4, filter, get filtrate, the filter residue outward transport is handled;
B. secondary neutralizing treatment: the filtrate that step a is produced adds in the lime and PH to 3-7, filters, and filtrate adds excessive bicarbonate of ammonia and prepares manganous carbonate, and filter residue returns in the neutralizing well of step a, participates in neutralization reaction next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100524878A CN101070213B (en) | 2007-06-15 | 2007-06-15 | Method for increasing manganese utilizing rate by secondary neutralizing manganese sulfate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100524878A CN101070213B (en) | 2007-06-15 | 2007-06-15 | Method for increasing manganese utilizing rate by secondary neutralizing manganese sulfate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101070213A true CN101070213A (en) | 2007-11-14 |
| CN101070213B CN101070213B (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100524878A Active CN101070213B (en) | 2007-06-15 | 2007-06-15 | Method for increasing manganese utilizing rate by secondary neutralizing manganese sulfate |
Country Status (1)
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| CN (1) | CN101070213B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009352A1 (en) * | 2009-07-20 | 2011-01-27 | 贵州红星发展股份有限公司 | Method for preparing manganese carbonate |
| CN103864149A (en) * | 2014-03-20 | 2014-06-18 | 中信大锰矿业有限责任公司大新锰矿分公司 | Method for recycling manganese from wastewater of electrolytic manganese plant and reducing emission of carbon dioxide |
| CN106396056A (en) * | 2016-10-27 | 2017-02-15 | 长沙矿冶研究院有限责任公司 | Method for treating electrolytic manganese wastewater containing manganese and magnesium and recovering manganese from wastewater |
-
2007
- 2007-06-15 CN CN2007100524878A patent/CN101070213B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009352A1 (en) * | 2009-07-20 | 2011-01-27 | 贵州红星发展股份有限公司 | Method for preparing manganese carbonate |
| CN103864149A (en) * | 2014-03-20 | 2014-06-18 | 中信大锰矿业有限责任公司大新锰矿分公司 | Method for recycling manganese from wastewater of electrolytic manganese plant and reducing emission of carbon dioxide |
| CN103864149B (en) * | 2014-03-20 | 2015-12-30 | 中信大锰矿业有限责任公司大新锰矿分公司 | A kind ofly from electrolytic manganese factory waste water, reclaim manganese and the method for reducing emission of carbon dioxide |
| CN106396056A (en) * | 2016-10-27 | 2017-02-15 | 长沙矿冶研究院有限责任公司 | Method for treating electrolytic manganese wastewater containing manganese and magnesium and recovering manganese from wastewater |
| CN106396056B (en) * | 2016-10-27 | 2019-08-27 | 长沙矿冶研究院有限责任公司 | Handle method magnesium eletrolysis containing manganese manganese waste water and recycle Manganese in Waste Water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101070213B (en) | 2010-11-10 |
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Effective date of registration: 20230913 Address after: 443200 Yaojiagang Fine Chemical Park, Dongshi Town, Zhijiang City, Yichang City, Hubei Province Patentee after: HUBEI HAOYUAN MATERIAL TECHNOLOGY Co.,Ltd. Address before: 443200 2 Stone Hill Road, Zhijiang economic and Technological Development Zone, Hubei, China Patentee before: HUBEI KAIYUAN CHEMICALS & TECHNOLOGY Co.,Ltd. |
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