CN101456593A - Process for producing manganese sulfate solution by high temperature crystallization process - Google Patents
Process for producing manganese sulfate solution by high temperature crystallization process Download PDFInfo
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- CN101456593A CN101456593A CNA2007101926040A CN200710192604A CN101456593A CN 101456593 A CN101456593 A CN 101456593A CN A2007101926040 A CNA2007101926040 A CN A2007101926040A CN 200710192604 A CN200710192604 A CN 200710192604A CN 101456593 A CN101456593 A CN 101456593A
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- sulfate solution
- manganese sulfate
- manganese
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- temperature crystallization
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Abstract
The invention discloses a process a manganese sulfate solution by a high temperature crystallization method. The process comprises: the slurry of manganese ore and the slurry of iron pyrite are subjected to heating reaction, iron removal, heavy metal removal, neutralization and pressure filtration to form a manganese solution of which the concentration is 140 to 180g/L; the manganese sulfate solution which accounts for 70 to 80 percent of the volume of a crystallizing pan is pumped for high temperature crystallization and purification. The high temperature crystallization and purification comprises: starting a stirrer for stirring; heating the manganese sulfate solution to 90 to 200 DEG C; raising the pressure of the manganese sulfate solution to 0.5 to 2.0 MPa; opening a discharge valve to discharge the slurry into a pressure filter pot for solid-liquid separation and keeping the pressure of the pressure filter pot within 0.8 to 1.0 MPa; after solid-liquid separation, pouring the materials into a certain amount of purified water which is prepared in advance for dissolution and keeping the concentration of the manganese sulfate solution with in 140 to 180 g/L; and after dissolution, carrying out circular pressure filtration till a filtrate is clear and transparent. Due to the technical proposal, the process has the advantages of small energy consumption, low production cost, high recovery rate of manganese and so on compared with the prior art, wherein the production cost is 30 percent lower than the prior technical method and the recovery rate of manganese is up to 85 percent.
Description
Technical field
The present invention relates to a kind of technology of the processing method of producing manganous sulfate, particularly a kind of producing manganese sulfate solution by high temperature crystallization process.
Background technology
Manganese sulfate solution is to be used for processing various manganese goods as the raw material of electrolytic manganese dioxide, high-purity manganese carbonate, electronic-grade trimanganese tetroxide, electronic-grade manganese monoxide, chemical manganese bioxide, technical grade manganese sulfate monohydrate, chemical grade manganese sulfate monohydrate, pharmaceutical grade manganese sulfate monohydrate, food grade manganese sulfate monohydrate, analytical pure manganese sulfate monohydrate etc.The production method of existing manganese sulfate solution is: with crusher manganese ore is crushed to particle below the 2mm, manganese ore is worn into-100 purpose ore pulps with wet wheeling machine again, again the sulfurous iron ore that contains S ≧ 32%, wear into-100 purpose ore pulps with wet wheeling machine equally, prepare by a certain percentage with manganese ore slurry, again Jia Shui, add sulfuric acid, through reacting by heating, deironing, removing heavy metals, neutralization, press filtration, make manganese sulfate solution.
There is following weak point in this traditional technology method:
1, production cost height, energy consumption height: 1 ton of manganous sulfate of every production need consume coal 1.2-1.5 ton;
2, manganese recovery ratio is low: manganese recovery ratio is only up to 60-65%.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, and a kind of technology of producing manganese sulfate solution by high temperature crystallization process is provided.
Technical scheme of the present invention is: a kind of technology of producing manganese sulfate solution by high temperature crystallization process comprises: will be with the ore pulp of manganese ore and sulfurous iron ore through reacting by heating, deironing, removing heavy metals, neutralization, make after the press filtration, content is the manganese sulfate solution of 140g/L～180g/L, pumping into manganese sulfate solution by the 70-80% of crystallizing pan cubic capacity carries out high temperature crystallization and purify: the stirrer of opening in the crystallizing pan stirs, open the thermal source switch with solution heat temperature raising to 90 in the pot ℃～200 ℃, constant temperature and pressure 15-30 minute, the stirrer of opening again after the blowdown in the crystallizing pan stirs, heat temperature raising to 90 ℃～200 ℃, boost to pressure 0.5Mpa～2.0Mpa, the unlatching discharge valve is put into the press filtration pot with slurry and is carried out solid-liquid separation, press filtration pot pressure-controlling is poured material in the off-the-shelf quantitative pure water after the solid-liquid separation again and is dissolved in 0.8Mpa～1.0Mpa scope; The dissolving back adopts circulation press filtration mode to carry out press filtration, and press filtration is to the limpid bright POV manganese solution that is of filtrate.
The present invention compared with prior art, has following advantage owing to adopt as above technical scheme:
1, energy consumption is low, production cost is low: be example with the manganese sulfate monohydrate, one ton of product of traditional technology method needs 1.2～1.5 tons in 5500 kilocalories mark coal, and this technology only needs 0.5～0.7 ton, and production cost reduces by 30% than traditional technology method.
2, manganese recovery ratio can reach more than 85%, and manganous sulfate purity for high-purity manganese goods deep processed product, has improved a low cost raw material platform up to 99.9%.
The present invention raises with fluid temperature and solubleness reduces this principle and studies successfully according to the solubleness of manganese sulfate solution, and the manganese sulfate solution of producing can be used for the various high purity manganese of further deep processing goods.As: be used for producing electrolytic manganese dioxide, MnO
2Content reaches more than 94%, and production cost can descend 1000 yuan-1500 yuan; Be used for producing high-purity manganese carbonate, electronic-grade trimanganese tetroxide, electronic-grade manganese monoxide, chemical dioxy manganese.Technical grade manganese sulfate monohydrate, chemical grade manganese sulfate monohydrate, pharmaceutical grade manganese sulfate monohydrate, food grade manganese sulfate monohydrate, analytical pure manganese sulfate monohydrate etc.
Embodiment
A kind of technology of producing manganese sulfate solution by high temperature crystallization process, it is to use the ore pulp of manganese ore and sulfurous iron ore through reacting by heating, deironing, removing heavy metals, neutralization, make after the press filtration, content is the manganese sulfate solution of 140g/L～180g/L, pumping into manganese sulfate solution by the 70-80% of crystallizing pan cubic capacity carries out high temperature crystallization and purifies: open stirrer and stir, open the thermal source switch with solution heat temperature raising to 90 in the pot ℃～200 ℃, heating-up time is controlled in 60-80 minute and finishes, constant temperature and pressure 15-30 minute, stopping stirrer stirring, stop to heat, after opening the wash water valve blowdown, opening stirrer once more stirs, open the thermal source switch and be warming up to 90 ℃～200 ℃, boost to pressure 0.5Mpa～2.0Mpa, the unlatching discharge valve is put into the press filtration pot with slurry and is carried out solid-liquid separation, press filtration pot pressure-controlling is in 0.8Mpa～1.0Mpa scope, after the solid-liquid separation material poured in the off-the-shelf quantitative pure water and dissolve, manganese sulfate solution concentration is controlled in 140g/L～180g/L scope, the circulation press filtration of dissolving back to filtrate limpid bright be qualified.
Claims (3)
1, a kind of technology of producing manganese sulfate solution by high temperature crystallization process, it comprises: will be with the ore pulp of manganese ore and sulfurous iron ore through reacting by heating, deironing, removing heavy metals, neutralization, make after the press filtration, content is the manganese sulfate solution of 140g/L～180g/L, pumping into manganese sulfate solution by the 70-80% of crystallizing pan cubic capacity carries out high temperature crystallization and purify: the stirrer of opening in the crystallizing pan stirs, open the thermal source switch with solution heat temperature raising to 90 in the pot ℃～200 ℃, constant temperature and pressure 15-30 minute, it is characterized in that the stirrer of opening again in the crystallizing pan after the blowdown stirs, heat temperature raising boosts, open discharge valve and slurry is put into the press filtration pot carry out the high pressure solid-liquid separation, after material is poured in the off-the-shelf quantitative pure water again and is dissolved; The dissolving back adopts circulation press filtration mode to carry out press filtration, and press filtration is to the limpid bright POV manganese solution that is of filtrate.
2, the technology of a kind of producing manganese sulfate solution by high temperature crystallization process according to claim 1, it is characterized in that the stirrer of opening again in the crystallizing pan after the blowdown stirs, heat temperature raising to 90 ℃～200 ℃ boosts to pressure 0.5Mpa～2.0Mpa and carries out high temperature crystallization again.
3, the technology of a kind of producing manganese sulfate solution by high temperature crystallization process according to claim 1 is characterized in that: during the high temperature crystallization solid-liquid separation, the pressure-controlling of press filtration pot is at 0.8Mpa～1.0Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101926040A CN101456593A (en) | 2007-12-14 | 2007-12-14 | Process for producing manganese sulfate solution by high temperature crystallization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101926040A CN101456593A (en) | 2007-12-14 | 2007-12-14 | Process for producing manganese sulfate solution by high temperature crystallization process |
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| Publication Number | Publication Date |
|---|---|
| CN101456593A true CN101456593A (en) | 2009-06-17 |
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| CNA2007101926040A Pending CN101456593A (en) | 2007-12-14 | 2007-12-14 | Process for producing manganese sulfate solution by high temperature crystallization process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560156A (en) * | 2012-02-23 | 2012-07-11 | 中国恩菲工程技术有限公司 | Method for recycling manganese from P204 manganese back extraction solution in nickel laterite hydrometallurgical process |
| CN103030180A (en) * | 2012-12-07 | 2013-04-10 | 中信大锰矿业有限责任公司 | Production method of high-purity manganese sulfate |
| CN103466713A (en) * | 2013-08-27 | 2013-12-25 | 中南大学 | Method for preparing manganese sulfate monohydrate with low-grade manganese ore through primary crystallization by high-pressure method |
| CN103496746A (en) * | 2013-08-27 | 2014-01-08 | 中南大学 | Method for preparing cell-grade high-purity manganese sulfate by low-grade manganese ore high-pressure crystallization |
| CN106395910A (en) * | 2016-08-29 | 2017-02-15 | 中南大学 | Method for preparation of battery grade high-purity manganese sulfate from industrial grade manganese sulfate |
-
2007
- 2007-12-14 CN CNA2007101926040A patent/CN101456593A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560156A (en) * | 2012-02-23 | 2012-07-11 | 中国恩菲工程技术有限公司 | Method for recycling manganese from P204 manganese back extraction solution in nickel laterite hydrometallurgical process |
| CN103030180A (en) * | 2012-12-07 | 2013-04-10 | 中信大锰矿业有限责任公司 | Production method of high-purity manganese sulfate |
| CN103030180B (en) * | 2012-12-07 | 2015-04-08 | 中信大锰矿业有限责任公司 | Production method of high-purity manganese sulfate |
| CN103466713A (en) * | 2013-08-27 | 2013-12-25 | 中南大学 | Method for preparing manganese sulfate monohydrate with low-grade manganese ore through primary crystallization by high-pressure method |
| CN103496746A (en) * | 2013-08-27 | 2014-01-08 | 中南大学 | Method for preparing cell-grade high-purity manganese sulfate by low-grade manganese ore high-pressure crystallization |
| CN103496746B (en) * | 2013-08-27 | 2015-11-04 | 中南大学 | Low-grade manganese high pressure crystal legal system is for cell-grade high purity manganese sulfate |
| CN103466713B (en) * | 2013-08-27 | 2016-06-01 | 中南大学 | Low-grade manganese high-pressure process primary crystallization prepares Manganous sulfate monohydrate |
| CN106395910A (en) * | 2016-08-29 | 2017-02-15 | 中南大学 | Method for preparation of battery grade high-purity manganese sulfate from industrial grade manganese sulfate |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090617 |