CN107697896A - A kind of method that high-purity phosphoric acid iron is prepared using ferric manganese ore as raw material - Google Patents
A kind of method that high-purity phosphoric acid iron is prepared using ferric manganese ore as raw material Download PDFInfo
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- CN107697896A CN107697896A CN201711208581.8A CN201711208581A CN107697896A CN 107697896 A CN107697896 A CN 107697896A CN 201711208581 A CN201711208581 A CN 201711208581A CN 107697896 A CN107697896 A CN 107697896A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/37—Phosphates of heavy metals
- C01B25/375—Phosphates of heavy metals of iron
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P2006/80—Compositional purity
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Abstract
The present invention relates to a kind of method that high-purity phosphoric acid iron is prepared using ferric manganese ore as raw material, and ferric manganese ore and coal are carried out being well mixed after being ground into powder respectively, then is put into reduction kiln roasting, is then cooled down in stove, primary slurry is then mixed and made into water；Sulfuric acid, and stirring reaction are added into primary slurry, is then filtered, obtains filtrate；Hydrogen peroxide is added into filtrate, is filtered after reaction, obtains secondary species；Secondary slurry is made in secondary species and deionized water；Secondary slurry is mixed with sulfuric acid, obtains solution；Ammonium phosphate is added into solution, is filtered after reaction, obtains secondary filtrate；Ammonium phosphate is added to secondary filtrate, phosphoric acid, stirring and then filtering is added, obtains whole level solid product；The whole level solid matter with deionized water is washed, then in drying, obtains high-purity phosphoric acid iron.Preparation technology of the present invention is simple, and reaction condition easily reaches, and reaction is also easy to control, and energy consumption is also low, and process product will not pollute to environment.
Description
Technical field
The present invention relates to ferric phosphate field, specially a kind of method that high-purity phosphoric acid iron is prepared using ferric manganese ore as raw material.
Background technology
Ferric phosphate, also known as high ferric phosphate, ferric orthophosphate, molecular formula FePO4, it is a kind of white, canescence monoclinic crystal
Powder.It is iron salt solutions and the salt of sodium phosphate effect, the iron in ferric phosphate is ferric iron, in the majority with dihydrate.
Ferric phosphate is mainly for the manufacture of lithium iron phosphate cell material；It also is used as catalyst and manufacture ceramics etc..Ferric phosphate
It is to ratify one of several molluscacides few in number for using in organic agriculture, different from the methaldehyde used in the past, it is to doting on
Thing and wild animal are nontoxic.Also have in steel and manufacturing technology using this material of ferric phosphate, ferric phosphate is adhered to gold
Metal surface, metal can be prevented to be further oxided.Phosphoric acid iron-dope is also mainly used as base coating, to increase iron or steel table
The adhesive force in face, and it is usually used in antirust treatment.Ferric phosphate can be used for being bonded fabric, wood, or other materials to above-mentioned material
Surface.Catalyst of the ferric phosphate as dehydrogenation oxidation, is also used as cement additire, can also be used as irony hardening agent.
, can also be as the insertion electrode of lithium ion battery although ferric phosphate electrical conductivity is low.However, as material engineering teacher overcomes
Electrical conductivity problems, in recent years its used as electrode material more and more common.Because ferric phosphate is to thermostabilization, generally it is easier to circulate
Utilize, it is the ideal electrode material of batteries of electric automobile.
Manganese ore raw material impurity content is big, and domestic abroad to find substantial amounts of high Fe content manganese ore, this kind of manganese ore is as manganese
When deep processed product raw material uses（Such as produce manganese sulfate, electrolytic manganese dioxide, electrolytic manganese）, the Tie Tong in raw material often all enters
Leached mud, and at present some have found be often as high as 15-30% containing the iron content in Ferromanganese Ore, traditional wet-chemical leaches work
Skill inevitably causes the waste of iron resource.But how to prepare to meet for raw material using ferric manganese ore and in the industry should
The high-purity phosphoric acid iron of electrode material, turns into current problem.
The content of the invention
The shortcomings that for above-mentioned prior art, the present invention provides a kind of low cost, green energy conservation prepares high-purity phosphoric acid iron
Method.
The present invention solves above-mentioned technical problem and uses following technical scheme：One kind prepares high purity phosphorus by raw material of ferric manganese ore
The method of sour iron, comprises the following steps：
（1）Ferric manganese ore and coal are carried out respectively to be ground into powder；
（2）Ferric manganese ore powder and coal dust are well mixed, obtain mixture；
（3）The mixture is put into reduction furnace, roasting a period of time, is then cooled down in stove, obtains Primary product；
（4）The Primary product is mixed with water, primary slurry is made；
（5）Sulfuric acid is added into the primary slurry, and stirring reaction is for a period of time, and it is 4.2- to control reaction end pH value
4.5；
（6）Reacted primary slurry is filtered, obtains filtrate；
（7）Hydrogen peroxide is added into the filtrate, reaction a period of time, then filters, obtains secondary species；
（8）Secondary slurry is made in the secondary species and deionized water；
（9）The secondary slurry is mixed with sulfuric acid, and stirs and is completely dissolved to solid, obtains solution；
（10）Ammonium phosphate is added into the solution, ammonium phosphate is 2-3g/L with dosage, is filtered after reaction, obtains secondary filtrate；
（11）Ammonium phosphate is added to the secondary filtrate, reaction a period of time, phosphoric acid is added, stirs a period of time, then
Filtering, obtains whole level solid product；
（12）The whole level solid matter with deionized water is washed, is then dried at 90-100 DEG C, obtains high purity phosphorus
Sour iron.
Preferably, step（1）Middle ferric manganese ore and coal carry out being crushed to respectively the mesh of particle diameter -150 more than 95%.
Preferably, step（2）Middle ferric manganese ore and coal press 1：（0.2-0.3）Mixed.
Preferably, step（3）Middle sintering temperature is 850-900 DEG C, and roasting time is 4 hours, is then cooled down in stove
To less than 50 DEG C.
As further preferred, step（4）Described in the mixed proportion of Primary product and water be 1:3.
Preferably, step（5）The sulfuric acid of middle addition is with the ferric manganese ore powder mass ratio（0.88-1.15）:1；And
Stirring reaction 120 minutes.
Further, step（7）Middle hydrogen peroxide is 35-55g/L with dosage.
Preferably, step（8）Described in the mixing ratio of secondary species and deionized water be 1:3.
Further, step（9）The sulfuric acid of middle addition is 1.4 with the secondary species mass ratio:1.
Preferably, step（11）Middle ammonium phosphate addition is 160-240g/L；Reaction 120 minutes, phosphoric acid addition are
4-5g/L, continue stirring 30 minutes.
The present invention has the following advantages that compared with prior art：The present invention uses ferric manganese ore, and for raw material, its source is wide, former
Expect that cost is low；Traditional wet-chemical leaching of manganese miner skill inevitably causes the waste of iron resource, and the present invention effectively utilizes
Iron resource in manganese ore, avoid the waste of iron resource；Preparation technology of the present invention is simple, and reaction condition easily reaches, and reaction is also easy
Control, energy consumption is also low, and process product will not pollute to environment；High-purity phosphoric acid iron product quality is：Fe29-30%;P16.2-
17.2%;Fe/P0.97-1.01;Ca<0.04%;Mg<0.04%;Na<0.01%;K<0.01%;Cu<0.001%;Zn<0.001%Pb<
0.001%;Ni<0.001%;Co<0.001%;Final high-purity phosphoric acid product impurity content is low, and purity is high；Present invention process flow is green
Colour circle is protected, and overall production cost is low, and social benefit is good, it is easy to accomplish industrial-scale production.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.It should be appreciated that specific embodiment described herein is only explaining this hair
It is bright, it is not intended to limit the present invention.
Embodiment 1：
Ferric manganese ore and coal are carried out to being crushed to the mesh of particle diameter -150 respectively more than 95%；Ferric manganese ore powder and coal dust are pressed 1：0.2 enters
Row is well mixed, obtains mixture；The mixture is put into reduction furnace, is calcined, sintering temperature is 850 DEG C, roasting
Time is 4 hours, and less than 50 DEG C are then cooled in stove, obtains Primary product；It is in proportion with water by the Primary product
1:3 mixing, are made primary slurry；Sulfuric acid, the sulfuric acid of addition and the ferric manganese ore silty amount are added into the primary slurry
Than for 0.88:1, and stirring reaction 120 minutes, and it is 4.2-4.5 to control reaction end pH value；Reacted primary slurry is entered
Row filtering, obtains filtrate；Hydrogen peroxide is added into the filtrate, hydrogen peroxide is that every liter of filtrate adds 35g hydrogen peroxide with dosage,
Reaction a period of time, then filter, obtain secondary species；The secondary species and deionized water are pressed 1:3 ratio mixing system
Into secondary slurry；The secondary slurry is mixed with sulfuric acid, the sulfuric acid of addition is 1.4 with the secondary species mass ratio:1, and
Stirring is completely dissolved to solid, obtains solution；Ammonium phosphate is added into the solution, ammonium phosphate is that every liter of solution adds with dosage
2g ammonium phosphate, filtered after reaction, obtain secondary filtrate；Ammonium phosphate is added to the secondary filtrate, ammonium phosphate addition is every
Rise secondary filtrate and add 160g ammonium phosphate, react 120 minutes；Phosphoric acid is added, phosphoric acid addition is that every liter of secondary filtrate adds
4g phosphoric acid, continue stirring 30 minutes, then filter, obtain whole level solid product；By the whole level solid matter with deionized water
Washing 2 times, is then dried at 90 DEG C, obtains high-purity phosphoric acid iron.After testing, high-purity phosphoric acid iron product quality is：Fe29-
30%;P16.2-17.2%;Fe/P0.97-1.01;Ca<0.04%;Mg<0.04%;Na<0.01%;K<0.01%;Cu<0.001%;Zn
<0.001%Pb<0.001%;Ni<0.001%;Co<0.001%;Final high-purity phosphoric acid product impurity content is low, and purity is high.
Embodiment 2：
Ferric manganese ore and coal are carried out to being crushed to the mesh of particle diameter -150 respectively more than 95%；Ferric manganese ore powder and coal dust are pressed 1：0.25
It is well mixed, obtains mixture；The mixture is put into reduction furnace, is calcined, sintering temperature is 880 DEG C, roasting
It is 4 hours to burn the time, and less than 50 DEG C are then cooled in stove, obtains Primary product；By the Primary product and water in proportion
For 1:3 mixing, are made primary slurry；Sulfuric acid, the sulfuric acid of addition and the ferric manganese ore silty are added into the primary slurry
Amount is than being 1:1, and stirring reaction 120 minutes, and it is 4.2-4.5 to control reaction end pH value；Reacted primary slurry is entered
Row filtering, obtains filtrate；Hydrogen peroxide is added into the filtrate, hydrogen peroxide is that every liter of filtrate adds 45g hydrogen peroxide with dosage,
Reaction a period of time, then filter, obtain secondary species；The secondary species and deionized water are pressed 1:3 ratio mixing system
Into secondary slurry；The secondary slurry is mixed with sulfuric acid, the sulfuric acid of addition is 1.4 with the secondary species mass ratio:1, and
Stirring is completely dissolved to solid, obtains solution；Ammonium phosphate is added into the solution, ammonium phosphate is that every liter of solution adds with dosage
2.5g ammonium phosphate, filtered after reaction, obtain secondary filtrate；Ammonium phosphate is added to the secondary filtrate, ammonium phosphate addition is
Every liter of secondary filtrate adds 200g ammonium phosphate, reacts 120 minutes；Phosphoric acid is added, phosphoric acid addition is that every liter of secondary filtrate adds
Enter 4.5g phosphoric acid, continue stirring 30 minutes, then filter, obtain whole level solid product；By the whole level solid product spend from
Sub- water washing 2 times, is then dried at 95 DEG C, obtains high-purity phosphoric acid iron.After testing, high-purity phosphoric acid iron product quality is：
Fe29-30%;P16.2-17.2%;Fe/P0.97-1.01;Ca<0.04%;Mg<0.04%;Na<0.01%;K<0.01%;Cu<
0.001%;Zn<0.001%Pb<0.001%;Ni<0.001%;Co<0.001%;Final high-purity phosphoric acid product impurity content is low, purity
It is high.
Embodiment 3：
Ferric manganese ore and coal are carried out to being crushed to the mesh of particle diameter -150 respectively more than 95%；Ferric manganese ore powder and coal dust are pressed 1：0.3 enters
Row is well mixed, obtains mixture；The mixture is put into reduction furnace, is calcined, sintering temperature is 900 DEG C, roasting
Time is 4 hours, and less than 50 DEG C are then cooled in stove, obtains Primary product；It is in proportion with water by the Primary product
1:3 mixing, are made primary slurry；Sulfuric acid, the sulfuric acid of addition and the ferric manganese ore silty amount are added into the primary slurry
Than for 1.15:1, and stirring reaction 120 minutes, and it is 4.2-4.5 to control reaction end pH value；Reacted primary slurry is entered
Row filtering, obtains filtrate；Hydrogen peroxide is added into the filtrate, hydrogen peroxide is that every liter of filtrate adds 55g hydrogen peroxide with dosage,
Reaction a period of time, then filter, obtain secondary species；The secondary species and deionized water are pressed 1:3 ratio mixing system
Into secondary slurry；The secondary slurry is mixed with sulfuric acid, the sulfuric acid of addition is 1.4 with the secondary species mass ratio:1, and
Stirring is completely dissolved to solid, obtains solution；Ammonium phosphate is added into the solution, ammonium phosphate is that every liter of solution adds with dosage
3g ammonium phosphate, filtered after reaction, obtain secondary filtrate；Ammonium phosphate is added to the secondary filtrate, ammonium phosphate addition is every
Rise secondary filtrate and add 240g ammonium phosphate, react 120 minutes；Phosphoric acid is added, phosphoric acid addition is that every liter of secondary filtrate adds
5g phosphoric acid, continue stirring 30 minutes, then filter, obtain whole level solid product；By the whole level solid matter with deionized water
Washing 2 times, is then dried at 100 DEG C, obtains high-purity phosphoric acid iron.After testing, high-purity phosphoric acid iron product quality is：
Fe29-30%;P16.2-17.2%;Fe/P0.97-1.01;Ca<0.04%;Mg<0.04%;Na<0.01%;K<0.01%;Cu<
0.001%;Zn<0.001%Pb<0.001%;Ni<0.001%;Co<0.001%;Final high-purity phosphoric acid product impurity content is low, purity
It is high.
Embodiment 4：
Ferric manganese ore and coal are carried out to being crushed to the mesh of particle diameter -150 respectively more than 95%；Ferric manganese ore powder and coal dust are pressed 1：0.3 enters
Row is well mixed, obtains mixture；The mixture is put into reduction furnace, is calcined, sintering temperature is 890 DEG C, roasting
Time is 4 hours, and less than 50 DEG C are then cooled in stove, obtains Primary product；It is in proportion with water by the Primary product
1:3 mixing, are made primary slurry；Sulfuric acid, the sulfuric acid of addition and the ferric manganese ore silty amount are added into the primary slurry
Than for 0.9:1, and stirring reaction 120 minutes, and it is 4.2-4.5 to control reaction end pH value；Reacted primary slurry is entered
Row filtering, obtains filtrate；Hydrogen peroxide is added into the filtrate, hydrogen peroxide is that every liter of filtrate adds 50g hydrogen peroxide with dosage,
Reaction a period of time, then filter, obtain secondary species；The secondary species and deionized water are pressed 1:3 ratio mixing system
Into secondary slurry；The secondary slurry is mixed with sulfuric acid, the sulfuric acid of addition is 1.4 with the secondary species mass ratio:1, and
Stirring is completely dissolved to solid, obtains solution；Ammonium phosphate is added into the solution, ammonium phosphate is that every liter of solution adds with dosage
2g ammonium phosphate, filtered after reaction, obtain secondary filtrate；Ammonium phosphate is added to the secondary filtrate, ammonium phosphate addition is every
Rise secondary filtrate and add 220g ammonium phosphate, react 120 minutes；Phosphoric acid is added, phosphoric acid addition is that every liter of secondary filtrate adds
4g phosphoric acid, continue stirring 30 minutes, then filter, obtain whole level solid product；By the whole level solid matter with deionized water
Washing 2 times, is then dried at 95 DEG C, obtains high-purity phosphoric acid iron.After testing, high-purity phosphoric acid iron product quality is：Fe29-
30%;P16.2-17.2%;Fe/P0.97-1.01;Ca<0.04%;Mg<0.04%;Na<0.01%;K<0.01%;Cu<0.001%;Zn
<0.001%Pb<0.001%;Ni<0.001%;Co<0.001%;Final high-purity phosphoric acid product impurity content is low, and purity is high.
Embodiment 5：
Ferric manganese ore and coal are carried out to being crushed to the mesh of particle diameter -150 respectively more than 95%；Ferric manganese ore powder and coal dust are pressed 1：0.2 enters
Row is well mixed, obtains mixture；The mixture is put into reduction furnace, is calcined, sintering temperature is 820 DEG C, roasting
Time is 4 hours, and less than 50 DEG C are then cooled in stove, obtains Primary product；It is in proportion with water by the Primary product
1:3 mixing, are made primary slurry；Sulfuric acid, the sulfuric acid of addition and the ferric manganese ore silty amount are added into the primary slurry
Than for 0.95:1, and stirring reaction 120 minutes, and it is 4.2-4.5 to control reaction end pH value；Reacted primary slurry is entered
Row filtering, obtains filtrate；Hydrogen peroxide is added into the filtrate, hydrogen peroxide is that every liter of filtrate adds 40g hydrogen peroxide with dosage,
Reaction a period of time, then filter, obtain secondary species；The secondary species and deionized water are pressed 1:3 ratio mixing system
Into secondary slurry；The secondary slurry is mixed with sulfuric acid, the sulfuric acid of addition is 1.4 with the secondary species mass ratio:1, and
Stirring is completely dissolved to solid, obtains solution；Ammonium phosphate is added into the solution, ammonium phosphate is that every liter of solution adds with dosage
3g ammonium phosphate, filtered after reaction, obtain secondary filtrate；Ammonium phosphate is added to the secondary filtrate, ammonium phosphate addition is every
Rise secondary filtrate and add 180g ammonium phosphate, react 120 minutes；Phosphoric acid is added, phosphoric acid addition is that every liter of secondary filtrate adds
5g phosphoric acid, continue stirring 30 minutes, then filter, obtain whole level solid product；By the whole level solid matter with deionized water
Washing 2 times, is then dried at 90 DEG C, obtains high-purity phosphoric acid iron.After testing, high-purity phosphoric acid iron product quality is：Fe29-
30%;P16.2-17.2%;Fe/P0.97-1.01;Ca<0.04%;Mg<0.04%;Na<0.01%;K<0.01%;Cu<0.001%;Zn
<0.001%Pb<0.001%;Ni<0.001%;Co<0.001%;Final high-purity phosphoric acid product impurity content is low, and purity is high.
In the present invention, high-purity phosphoric acid iron product quality is good, and indices content is more satisfactory in detection, and impurity content is low, pure
Degree is high, and high-purity phosphoric acid iron prepared by the present invention can industrially be applied successfully as electrode material.
The general principle and principal character and advantages of the present invention of the present invention, the technology of the industry has been shown and described above
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of method that high-purity phosphoric acid iron is prepared using ferric manganese ore as raw material, comprises the following steps：
（1）Ferric manganese ore and coal are carried out respectively to be ground into powder；
（2）Ferric manganese ore powder and coal dust are well mixed, obtain mixture；
（3）The mixture is put into reduction furnace, roasting a period of time, is then cooled down in stove, obtains Primary product；
（4）The Primary product is mixed with water, primary slurry is made；
（5）Sulfuric acid is added into the primary slurry, and stirring reaction is for a period of time, and it is 4.2- to control reaction end pH value
4.5；
（6）Reacted primary slurry is filtered, obtains filtrate；
（7）Hydrogen peroxide is added into the filtrate, reaction a period of time, then filters, obtains secondary species；
（8）Secondary slurry is made in the secondary species and deionized water；
（9）The secondary slurry is mixed with sulfuric acid, and stirs and is completely dissolved to solid, obtains solution；
（10）Ammonium phosphate is added into the solution, ammonium phosphate is 2-3g/L with dosage, is filtered after reaction, obtains secondary filtrate；
（11）Ammonium phosphate is added to the secondary filtrate, reaction a period of time, phosphoric acid is added, stirs a period of time, then
Filtering, obtains whole level solid product；
（12）The whole level solid matter with deionized water is washed, is then dried at 90-100 DEG C, obtains high purity phosphorus
Sour iron.
2. according to the method for claim 1, step（1）Middle ferric manganese ore and coal carry out being crushed to the mesh of particle diameter -150 respectively big
In 95%.
3. according to the method for claim 1, step（2）Middle ferric manganese ore and coal press 1：（0.2-0.3）Mixed.
4. according to the method for claim 1, step（3）Middle sintering temperature is 850-900 DEG C, and roasting time is 4 hours, so
Less than 50 DEG C are cooled in stove afterwards.
5. according to the method for claim 1, step（4）Described in the mixed proportion of Primary product and water be 1:3.
6. according to the method for claim 1, step（5）The sulfuric acid of middle addition is with the ferric manganese ore powder mass ratio
（0.88-1.15）:1；And stirring reaction 120 minutes.
7. according to the method for claim 1, step（7）Middle hydrogen peroxide is 35-55g/L with dosage.
8. according to the method for claim 1, step（8）Described in the mixing ratio of secondary species and deionized water be 1:3.
9. according to the method for claim 1, step（9）The sulfuric acid of middle addition is 1.4 with the secondary species mass ratio:1.
10. according to the method for claim 1, step（11）Middle ammonium phosphate addition is 160-240g/L；120 points of reaction
Clock, phosphoric acid addition are 4-5g/L, continue stirring 30 minutes.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987749A (en) * | 2018-08-28 | 2018-12-11 | 深圳市德方纳米科技股份有限公司 | The method of ferric phosphate, the preparation method of iron manganese phosphate for lithium and lithium iron phosphate positive material are prepared by phosphorus ore |
| CN114604843A (en) * | 2022-04-25 | 2022-06-10 | 中南大学 | Method for preparing battery-grade ferromanganese phosphate by simultaneously leaching high-iron manganese ores |
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| CN101327918A (en) * | 2008-08-04 | 2008-12-24 | 国家农药创制工程技术研究中心 | Preparation of high pure ferric phosphate |
| CN105331800A (en) * | 2015-11-27 | 2016-02-17 | 永州丰盈科技有限责任公司 | Reducing roasting process for low-grade high-iron manganese ore |
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2017
- 2017-11-28 CN CN201711208581.8A patent/CN107697896A/en active Pending
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| CN101327918A (en) * | 2008-08-04 | 2008-12-24 | 国家农药创制工程技术研究中心 | Preparation of high pure ferric phosphate |
| CN105331800A (en) * | 2015-11-27 | 2016-02-17 | 永州丰盈科技有限责任公司 | Reducing roasting process for low-grade high-iron manganese ore |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987749A (en) * | 2018-08-28 | 2018-12-11 | 深圳市德方纳米科技股份有限公司 | The method of ferric phosphate, the preparation method of iron manganese phosphate for lithium and lithium iron phosphate positive material are prepared by phosphorus ore |
| CN114604843A (en) * | 2022-04-25 | 2022-06-10 | 中南大学 | Method for preparing battery-grade ferromanganese phosphate by simultaneously leaching high-iron manganese ores |
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