CN101892383B - Reinforced leaching de-ironing device and de-ironing method of manganese ore slurry - Google Patents
Reinforced leaching de-ironing device and de-ironing method of manganese ore slurry Download PDFInfo
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- CN101892383B CN101892383B CN2010102130887A CN201010213088A CN101892383B CN 101892383 B CN101892383 B CN 101892383B CN 2010102130887 A CN2010102130887 A CN 2010102130887A CN 201010213088 A CN201010213088 A CN 201010213088A CN 101892383 B CN101892383 B CN 101892383B
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Abstract
The invention relates to a reinforced leaching de-ironing device and a de-ironing method of manganese ore slurry. The device comprises a stirring tank for containing the manganese ore slurry, multilayer stirring blades and at least two venturi pipes in the bottom of the stirring tank. In the device, a gas distributor is omitted; ejection air flows of the venturi pipes in the bottom of the stirring tank are set to be with an included angle of 60 to 90 DEG; at the same time, two groups of venturi pipes with equal quantity to the layer number of the stirring blades are also arranged on both sides of the stirring tank; the mode of combining air impact flow with mechanical stir is adopted in the device, which ensure that the suspension performance of the manganese ore slurry is largely enhanced and the deposition of ore powder at the bottom of the stirring tank can be reduced; and especially, the gas distributor is replaced by the two groups of venturi pipes, and thus, the operating reliability is largely enhanced. The method applying the device mainly comprises the steps of alternately increasing and reducing inflation pressure so that the gas content of the ore slurry in the stirring tank is enhanced; the shortest leaching de-ironing time is only 3.5 hours; and at the same time, the leaching rate is enhanced to 91%.
Description
Technical field
The present invention relates in the electrolytic manganese production process, to the device and the method for use of manganese carbonate ore leaching deironing.
Background technology
Produce with electrolysis process in China and to adopt manganese carbonate ore (rhodochrosite) to be raw material in the enterprise of electrolytic metal Mn (abbreviation electrolytic manganese) mostly, before electrolytic process, also must remove the impurity in the manganese carbonate ore, the for example iron in the impurity component.Traditional method is to be mixed with into manganese ore slurry after pulverizing manganese carbonate ore and pyrolusite, with pyrolusite (Manganse Dioxide MnO wherein
2) as oxygenant, come ferrous iron (Fe with the leaching method
2+) being oxidized to ferric iron (Fe3+), after oxidation was accomplished, the pH value of adjusting leach liquor again was so that ferric iron hydrolysis and form ironic hydroxide [Fe (OH)
3] precipitate and get into the manganese slag, so just reached the deironing purpose.Afterwards; For reducing cost, economize on resources and considering from helping aspects such as environmental protection; People have more successfully developed method and the related device that utilizes air to substitute part Manganse Dioxide again; Wherein, it is a kind of relatively preferably that application number is 2009102509706, name is called " a kind of device of leaching manganese ore to remove iron and method for removing iron thereof ".The device of this invention comprises that bottom and (two, three or four layers) stirring rake of being fixed on this stir shaft bottom of steel basin, the stir shaft of splendid attire manganese ore slurry all are immersed in stirring system in this manganese ore slurry, are arranged in this steel basin and near the air of the gas distributor of this steel basin inner bottom part and the adjustable speed through pipeline and this gas distributor UNICOM; And; Between this gas distributor and steel basin inner bottom part; Two venturi tubes are installed at least, and the inlet end of this venturi tube is through the air UNICOM of pipeline and adjustable speed.In this device process of utilization, include the increase supply gas pressure, through gas distributor and venturi tube in manganese ore slurry, inflate, the way that increases number of bubbles with usefulness lets air and manganese ore slurry thorough mixing; Reduce supply gas pressure, strengthen (airborne) oxygen these two key steps the manganese ore slurry infiltration to utilize manganese ore slurry self pressure (deadweight).Under the acting in conjunction of the various features structure of said apparatus, improved with airborne oxygen and come the ferrous ability of oxidation, saved more Manganse Dioxide; Simultaneously, after the method for this invention of utilization, from processing manganese ore slurry, to obtaining carrying out the electrolytic leach liquor time extremely, also can shorten, its working efficiency also increases.Yet; Because this device reduction supply gas pressure stage in use; Must let it maintain lets on the not blocked force value of the injection well of gas distributor---if atmospheric pressure value is low; That the injection well of gas distributor just is prone to is blocked, or have the part manganese ore slurry to be squeezed into the effuser of gas distributor, in case there is manganese ore slurry to be squeezed in the effuser, just is difficult to filled out by the air-flow of increase once more.So, just have to keep a still higher relatively force value reducing the supply gas pressure stage.And under this higher relatively force value, attempt borrows manganese ore slurry to strengthen the purpose of oxygen to the infiltration of manganese ore slurry in deadweight, just is not easy to reach fully.Otherwise, very bring the injection well of aforesaid gas distributor blocked easily again, perhaps have the part manganese ore slurry to be squeezed into the negative consequence of the effuser of gas distributor.In brief, also have big gap between the actual effect of this invention and test effect, in other words, the safety when actual motion is relatively poor.
Summary of the invention
First purpose of the present invention is, provide a kind of can reliability service let more Manganse Dioxide by oxygen institute alternate in the air to the device of manganese ore slurry reinforced leaching deironing.
Second purpose of the present invention is that a kind of method for removing iron that uses the device of realizing first goal of the invention is provided.
The scheme that realizes said first purpose is a kind of like this device to the deironing of manganese ore slurry reinforced leaching; The aspect identical with prior art be, this device comprises that bottom and the stirring rake that is fixed on this stir shaft bottom of steel basin, the stir shaft of splendid attire manganese ore slurry all are immersed in stirring system in this manganese ore slurry, are installed at least two venturi tubes in this steel basin bottom; Wherein, stirring rake has two, three or four layers, and the inlet end of venturi tube is through pipeline and the air UNICOM that is driven by frequency control motor.Its improvements are, in the venturi tube in the steel basin bottom, have vertically up venturi tube of its jet-stream wind direction at least, have the venturi tube that 60～90 ° of angles are arranged between the vertical jet-stream wind up of its jet-stream wind direction and this at least; In the both sides of this steel basin sidewall, be provided with two groups of venturi tubes of equating with the stirring rake number of plies of quantity separately again, the jet-stream wind direction of the venturi tube corresponding with each layer stirring rake in these two groups is all pointed to the below of corresponding stirring rake; The inlet end of these two groups of venturi tubes is through pipeline, also with the air UNICOM that is driven by frequency control motor.
The scheme that realizes said second purpose is a kind of like this method to manganese ore slurry leaching deironing, and the aspect identical with prior art is that this method is to utilize airborne oxygen to substitute the method for part Manganse Dioxide in the manganese ore slurry.Its improvements are, this method for removing iron be realize first goal of the invention to the device of manganese ore slurry reinforced leaching deironing in carry out, its step is following:
1. solid-liquid separation and still have the manganese ore slurry of its leach liquor not as yet, in this steel basin of packing into, its Intake Quantity is this steel basin volumetrical 65～70%, and temperature is controlled between 40～60 ℃; Then, starting drives the motor of stirring rake, the speed control of this stirring rake between 300～350r/min; Then open air, to charge into air to steel basin through all venturi tubes; Then, increase the air demand of air gradually, till being inflated volume after the expansion and being steel basin volumetrical 90% to manganese ore slurry, and kept 8～12 minutes with this air demand through frequency control motor;
2. after, increase the air demand of few air gradually, till the volume to the manganese ore slurry venting retraction is steel basin volumetrical 70～75%, and kept 3～8 minutes with this air demand through frequency control motor;
3. then, the air demand of recovering air through speed control by frequency variation was once more still kept 8～12 minutes with this air demand to step final state 1.;
4. after this, the alternate cycles regulating step 2. with step supply gas pressure 3., and keep the corresponding identical time; 3.5 stop after～6 hours stirring and all air feed.
From the scheme that realizes first goal of the invention, can find out; Apparatus of the present invention have been cancelled gas distributor of the prior art, simultaneously, and again at least one pair of of close with the prior art venturi tube that is arranged in the steel basin bottom; Made to have between its jet-stream wind the state of 60～90 ° of angles into; So, not only eliminated the deficiency that structure problem brought by gas distributor itself, and when filling air; A kind of percussion flow district or turbulent region can also have been formed on this steel basin bottom, in this steel basin bottom, manganese ore slurry are inflated and are made its effect that suspends also be superior to gas distributor used in the prior art.
Being provided with two groups separately after quantity and the venturi tube that the stirring rake number of plies equates in this steel basin sidewall again, percussion flow district, many places or turbulent region have just been arranged in steel basin.Behind the spray angle when further regulating each venturi tube (will in embodiment, do further to disclose) in inflation; Manganese ore slurry in the whole steel basin is under inflated condition; Will suspend fully and become loose relatively, and then the air that has oxygen is charged into wherein in large quantities.So, under the acting in conjunction of the various features structure that comprises stirring rake, come the ferrous ability of oxidation not only to improve greatly with airborne oxygen, and its safety also is greatly improved.
Certainly, the device difference among the present invention also has advantage simple in structure, that equipment cost is low.
From the scheme that realizes second goal of the invention, can find out, though the present invention still still alternately increases and reduce supply gas pressure, still; After utilization apparatus of the present invention; Hit owing to increased a pair of filling of air of venturi tube importing, just formed impingement region, like this at two-layer stirring rake; Just strengthened alternate contact area, made heat transfer, the corresponding increase of rate of mass transfer.Improve the mixed effect of gas-solid-liquid greatly, strengthened the reaction of leaching of breeze and vitriolic and removal of impurities, shortened leaching time.Checking shows, from processing manganese ore slurry, goes out to obtaining carrying out electrolytic leach liquor, has guaranteed reliably that not only the shortest time is merely 3.5 hours effect, and leaching rate has brought up to 91% simultaneously.
Below in conjunction with accompanying drawing the present invention is further described.
Description of drawings
Fig. 1---the present invention is to the structural representation of manganese ore slurry reinforced leaching deironing apparatus
The A of Fig. 2---Fig. 1 is to rotation, partial enlarged drawing (in the stirring system except that drawing out stir shaft, all the other omissions)
Fig. 3---(section) figure is amplified in the part in I zone among Fig. 1
Embodiment
A kind of device to the deironing of manganese ore slurry reinforced leaching (with reference to figure 1,3), this device comprise that bottom and the stirring rake 8 that is fixed on these stir shaft 14 bottoms of steel basin 13, the stir shaft 14 of splendid attire manganese ore slurry all are immersed in stirring system in this manganese ore slurry, are installed at least two venturi tubes in these steel basin 13 bottoms; Wherein, said stirring rake 8 has two, three or four layers, and the inlet end of venturi tube is through pipeline and the air UNICOM that is driven by frequency control motor.In the present invention; In the venturi tube in steel basin 13 bottoms; Have the vertical venturi tube 3a up of its jet-stream wind direction at least, have its jet-stream wind direction at least and be somebody's turn to do the venturi tube 3b that 60～90 ° of angles are arranged between the vertical jet-stream wind up; In the both sides of steel basin 13 sidewalls, be provided with two groups of venturi tube 3c of equating with stirring rake 8 numbers of plies of quantity separately again, the jet-stream wind direction of the venturi tube 3c corresponding with each layer stirring rake 8 in these two groups is all pointed to the below of corresponding stirring rake 8; The inlet end of these two groups of venturi tube 3c is through pipeline, also with the air UNICOM that is driven by frequency control motor.
Can make manganese ore slurry under inflated condition as analyzing the present invention, suspend fully and become loose relatively at " summary of the invention ".Remove because of in the both sides of steel basin 13 sidewalls, set up two groups separately outside quantity and the venturi tube 3c that stirring rake 8 numbers of plies equate, also mention and maybe should regulate the spray angle of each venturi tube when inflating.In above-mentioned " the venturi tube 3b that 60～90 ° of angles are arranged between jet-stream wind direction and this vertical jet-stream wind up ", its 60～90 ° is exactly the regulation range of its spray angle.It will be apparent to those skilled in the art that this spray angle should be according to each different volume size, highly next concrete definite than different steel basins with diameter; In view of its occurrence only can be confirmed through the limited test of routine, so do not detail (since obvious, also only drawn out " the venturi tube 3b that 90 ° of angles are arranged between jet-stream wind direction and this vertical jet-stream wind up " in the accompanying drawing).
Note in that venturi tube is set, remove vertically up venturi tube 3a of jet-stream wind direction, in most of the cases, when the negative pressure hole 31 of level or the venturi tube (3b, 3c) that is obliquely installed has only (as shown in Figure 3) one, preferably them towards the below; When its negative pressure hole 31 has two (do not omit and draw), preferably all downward-sloping.
Further say (with reference to figure 1), be arranged on the jet-stream wind direction of each venturi tube 3c of steel basin 13 sidewall both sides, perhaps all be the level of state; Perhaps all be inclined upwardly, its tiltangle is not more than 15 °; Perhaps be part of horizontal, the acclivitous state of part, its tiltangle is not more than 15 ° (owing to obvious, only schematically being depicted as acclivitous in the accompanying drawing) to two the venturi tube 3c in the top.
Further say (with reference to figure 2), be arranged on the jet-stream wind direction of each venturi tube 3c of said steel basin 13 sidewall both sides, perhaps all point to said stir shaft 14 axis; Perhaps all depart from said stir shaft 14 axis, its deviation value B is not more than 25 times of these stir shaft 14 diameters; Be perhaps that part is pointed to said stir shaft 14 axis, part departs from the state of said stir shaft 14 axis; Its deviation value B is not more than 25 times (owing to obvious, only schematically being depicted as acclivitous in the accompanying drawing) of these stir shaft 14 diameters to two the venturi tube 3c in the top.
More than " angle of inclination ", the identical or different setting and the adjusting of " deviation value ", its purpose also is will " make manganese ore slurry under inflated condition, suspend fully and become loose relatively ".Same need in view of its occurrence but only only need can confirm, so (owing to obvious, only schematically having drawn out the venturi tube 3c that departs from stir shaft 14 axis in the accompanying drawing) is not detailed yet through the limited test of routine.
Further say (with reference to figure 1) again, be arranged on two groups of venturi tube 3c of steel basin 13 sidewalls, its inlet end is respectively through two main lines, with two air (1, the 2) UNICOM that is driven by separately frequency control motor.The benefit of two air (1,2) is set respectively; Not only be to reduce the power of separate unit frequency control motor and air; Where necessary; Can also be poor through the supply gas pressure of regulating two air (1,2), or alternately change relative size, come further to impel the percussion flow district of manganese ore slurry or the formation of turbulent region.
A kind of method to manganese ore slurry leaching deironing, this method is to utilize airborne oxygen to substitute the method for part Manganse Dioxide in the manganese ore slurry.Method for removing iron of the present invention carries out in the device of above-mentioned manganese ore slurry reinforced leaching deironing, and its step is following:
1. solid-liquid separation and still have the manganese ore slurry of its leach liquor not as yet, in the said steel basin 13 of packing into, its Intake Quantity is these steel basin 13 volumetrical 65～70%, and temperature is controlled between 40～60 ℃; Then, starting drives the motor of stirring rake 8, the speed control of this stirring rake 8 between 300～350r/min; Then open air, to charge into air to said steel basin 13 through all venturi tubes (3a, 3b, 3c); Then, increase the air demand of air gradually, till being inflated volume after the expansion and being steel basin 13 volumetrical 90% to manganese ore slurry, and kept 8～12 minutes with this air demand through frequency control motor;
2. after, increase the air demand of few air gradually, till the volume to the manganese ore slurry venting retraction is steel basin 13 volumetrical 70～75%, and kept 3～8 minutes with this air demand through frequency control motor;
3. then, the air demand of recovering air through speed control by frequency variation was once more still kept 8～12 minutes with this air demand to step final state 1.;
4. after this, the alternate cycles regulating step 2. with step supply gas pressure 3., and keep the corresponding identical time; 3.5 stop after～6 hours stirring and all air feed.
At last, to carrying out solid-liquid separation, again its leach liquor is carried out electrolysis through the manganese ore slurry behind the inventive method iron removal by oxidation.
Apparatus of the present invention and method have got into the pilot scale Qualify Phase.
During test, adopted the method for simultaneous test, following table " show " expression with 2009102509706, name is called the device of " a kind of device of leaching manganese ore to remove iron and method for removing iron thereof ", following table " newly " representes to use device of the present invention.During simultaneous test, in steel basin, all be loaded with the 150t manganese ore slurry, except that having reduced Manganse Dioxide wherein and corresponding sulfuric acid, all the other processing condition and pulping process and traditional method are with pyrolusite the same as oxygenant.Contrast verification is the result see the following form:
Manganse Dioxide consumption and sulfuric acid consumption in the last table through adding after the calculated in advance or once, or add one by one, and leaching rate obtains through the check to the leach liquor after the solid-liquid separation.Can find out that from table checking result and calculated in advance are very identical, and each routine effect is all better than prior art; Gas distributor is the sort of in the prior art uses poorer and poorer owing to not existing; And the problem of the special cleaning of behind certain hour, having to, so safety was stronger when the present invention moved.Compare with the existing apparatus and method of utilizing air to substitute part Manganse Dioxide, really got into the stage that in industry, to use.
Claims (6)
1. to the device of manganese ore slurry reinforced leaching deironing, this device comprises that the bottom and the stirring rake (8) that is fixed on this stir shaft (14) bottom of steel basin (13), the stir shaft (14) of splendid attire manganese ore slurry all are immersed in stirring system in this manganese ore slurry, are installed at least two venturi tubes in this steel basin (13) bottom; Wherein, Said stirring rake (8) has two, three or four layers; The inlet end of said venturi tube is communicated with the air that is driven by frequency control motor through pipeline, it is characterized in that, in the venturi tube in said steel basin (13) bottom; Have the vertical venturi tube (3a) up of its jet-stream wind direction at least, have its jet-stream wind direction at least and be somebody's turn to do the venturi tube (3b) that 60～90 ° of angles are arranged between the vertical jet-stream wind up; Both sides at said steel basin (13) sidewall; Be provided with two groups of venturi tubes (3c) of equating with said stirring rake (8) number of plies of quantity separately again; The jet-stream wind direction of the venturi tube (3c) corresponding with each layer stirring rake (8) in these two groups is all pointed to the below of corresponding stirring rake (8); The inlet end of these two groups of venturi tubes (3c) also is communicated with the air that is driven by frequency control motor through pipeline.
2. according to the said device of claim 1, it is characterized in that, be arranged on the jet-stream wind direction of each venturi tube (3c) of said steel basin (13) sidewall both sides, perhaps all be the level of state the deironing of manganese ore slurry reinforced leaching; Perhaps all be inclined upwardly, its pitch angle (θ) is not more than 15 °; Perhaps be part of horizontal, the acclivitous state of part, its pitch angle (θ) is not more than 15 °.
3. according to claim 1 or 2 said devices, it is characterized in that, be arranged on the jet-stream wind direction of each venturi tube (3c) of said steel basin (13) sidewall both sides, perhaps all point to said stir shaft (14) axis the deironing of manganese ore slurry reinforced leaching; Perhaps all depart from said stir shaft (14) axis, its deviation value (B) is not more than 25 times of this stir shaft (14) diameter; Be perhaps that part is pointed to said stir shaft (14) axis, part departs from the state of said stir shaft (14) axis, its deviation value (B) is not more than 25 times of this stir shaft (14) diameter.
4. according to claim 1 or 2 said devices to the deironing of manganese ore slurry reinforced leaching; It is characterized in that; Be arranged on two groups of venturi tubes (3c) of said steel basin (13) sidewall, its inlet end is respectively through two main lines, is communicated with two air that driven by separately frequency control motor.
5. according to the said device of claim 3 to the deironing of manganese ore slurry reinforced leaching; It is characterized in that; Be arranged on two groups of venturi tubes (3c) of said steel basin (13) sidewall, its inlet end is respectively through two main lines, is communicated with two air that driven by separately frequency control motor.
6. method to manganese ore slurry leaching deironing; This method is to utilize airborne oxygen to substitute the method for part Manganse Dioxide in the manganese ore slurry; It is characterized in that this method for removing iron is to carry out in to the device of manganese ore slurry reinforced leaching deironing in that claim 1 is said, its step is following:
1. solid-liquid separation and still have the manganese ore slurry of its leach liquor not as yet, in the said steel basin (13) of packing into, its Intake Quantity is this steel basin (13) volumetrical 65～70%, and temperature is controlled between 40～60 ℃; Then, starting drives the motor of stirring rake (8), the speed control of this stirring rake (8) between 300～350r/min; Then open air, to charge into air to said steel basin (13) through all venturi tubes (3a, 3b, 3c); Then, increase the air demand of air gradually, till being inflated volume after the expansion and being steel basin (13) volumetrical 90% to manganese ore slurry, and kept 8～12 minutes with this air demand through frequency control motor;
2. after, increase the air demand of few air gradually, till the volume to the manganese ore slurry venting retraction is steel basin (13) volumetrical 70～75%, and kept 3～8 minutes with this air demand through frequency control motor;
3. then, the air demand of recovering air through speed control by frequency variation was once more still kept 8～12 minutes with this air demand to step final state 1.;
4. after this, the alternate cycles regulating step 2. with step supply gas pressure 3., and keep the corresponding identical time; 3.5 stop after～6 hours stirring and all air feed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102130887A CN101892383B (en) | 2010-06-30 | 2010-06-30 | Reinforced leaching de-ironing device and de-ironing method of manganese ore slurry |
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| CN2010102130887A CN101892383B (en) | 2010-06-30 | 2010-06-30 | Reinforced leaching de-ironing device and de-ironing method of manganese ore slurry |
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| CN101892383B true CN101892383B (en) | 2012-05-23 |
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| CN102210991A (en) * | 2011-05-05 | 2011-10-12 | 秀山土家族苗族自治县科学技术委员会 | Manganese ore pulp stirring paddle with long service life |
| CN104120251B (en) * | 2014-07-25 | 2016-08-17 | 河北钢铁股份有限公司承德分公司 | Improve object element and turn hydrometallurgy reactor and the Wet-process metallurgy method of leaching rate |
| CN104313649B (en) * | 2014-11-25 | 2016-06-22 | 吉首大学 | Blade stretches stirring-type in-pulp electrolysis groove |
| CN107626268A (en) * | 2016-07-19 | 2018-01-26 | 中国石油化工股份有限公司 | A kind of liquid-liquid diphase reactor |
| CN111139355B (en) * | 2018-11-06 | 2022-08-12 | 金川集团股份有限公司 | Production line with anti-scaling function for extracting nickel and cobalt from laterite-nickel ore |
| CN111663040A (en) * | 2020-06-22 | 2020-09-15 | 中南大学 | Method for enhancing oxygen oxidation iron removal in solution by using microbubble generator |
| CN112169736B (en) * | 2020-09-30 | 2022-01-07 | 沈阳化工研究院有限公司 | Micro-collision flow stirring reactor |
| CN113621996A (en) * | 2021-08-13 | 2021-11-09 | 田红美 | Non-ferrous metal ore pulp electrolytic device |
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| US3510259A (en) * | 1967-07-13 | 1970-05-05 | Union Carbide Canada Ltd | Simultaneous leaching of zinc and manganese ores |
| CN101307462A (en) * | 2008-07-16 | 2008-11-19 | 中信锦州铁合金股份有限公司 | Deironing method for ferric manganese ore by leaching method |
| CN101591732B (en) * | 2009-06-08 | 2011-01-19 | 重庆武陵锰业有限公司 | Process method using oxygen as oxidant in leaching process of manganese ore |
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