CN110255628A - The method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant - Google Patents
The method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant Download PDFInfo
- Publication number
- CN110255628A CN110255628A CN201910438808.0A CN201910438808A CN110255628A CN 110255628 A CN110255628 A CN 110255628A CN 201910438808 A CN201910438808 A CN 201910438808A CN 110255628 A CN110255628 A CN 110255628A
- Authority
- CN
- China
- Prior art keywords
- oolitic hematite
- phosphor oolitic
- sulfuric acid
- ferric sulfate
- polymeric ferric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/14—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/008—Use of special additives or fluxing agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
Abstract
The invention discloses a kind of methods that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant.This method comprises the following steps: 1) by high-phosphor oolitic hematite and borax, lignite and Na2CO3Mixing, low-temperature bake obtain composite ore；2) ore grinding, magnetic separation obtain level-one magnetic concentrate；3) melt point, secondary grinding, magnetic separation obtains secondary magnetic separation concentrate again；4) dilute sulfuric acid leaches to obtain ferrous sulfate solution；5) high-purity polymeric ferric sulfate flocculant is aoxidized to obtain.The present invention carries out drastic reduction at a lower temperature, can preferably refine out iron ore and make the phosphorus content in iron ore lower and be convenient for being further processed；Selectivity uses Ca (OH)2After molten point and secondary magnetic separation, preferably solves the problems, such as in high-phosphor oolitic hematite that phosphorus content is excessively high and be difficult to be utilized and the problem of subsequent high-phosphor oolitic hematite leaches；It is prepared as high-purity polymeric ferric sulfate flocculant using the high-phosphor oolitic hematite being difficult to be utilized as raw material, is conducive to the comprehensive utilization of resource.
Description
Technical field
The invention belongs to technical field of resource comprehensive utilization, and in particular to a kind of high-phosphor oolitic hematite prepares high simple polymerisation
The method of ferric sulfate flocculant.
Background technique
High-phosphor oolitic hematite is up to 37.2 hundred million tons in China's reserves, is a kind of highly important appositional pattern iron ore, extensively
It is distributed in the provinces such as Jiangxi, Hubei, Guangxi, Hunan.High-phosphor oolitic hematite mainly contains siderite, bloodstone, chamosite
With four kinds of ingredients of limonite.The shapes such as its oolith likeness in form kidney shape, spherical, ellipsoid and lenticular, by collophane annulus, red iron
Mine annulus and calcite girdle collectively constitute, and oolith volume is larger (partial size be 0.3~3mm), and with chlorite, quartz, contain
Ferrous metal mineral mineral are that core constitutes the embedding complicated concentric annular structure of cloth between each other, and disseminated grain size is superfine；
It is sporadicly dispersed with some ferrous metal mineral between oolith and gangue mineral, all iron content are smaller.When high-phosphor oolitic hematite object
When being milled down to 20 μm of <, some ferrous metal mineral and gangue mineral being sporadicly distributed between oolith can be smoothly dissociated,
Most of bloodstone annulus, collophane annulus and clay mineral annulus can dissociate, but the destruction of oolith structure is not thorough, embedding cloth
The bloodstone of collophane and embedding cloth between quartz mineral in hematite crystals gap is difficult to dissociate.
There are mainly of two types in terms of the comprehensive utilization of high-phosphor oolitic hematite at present: one is magnetizing roasts --- magnetic
Choosing --- dephosphorization is the treatment process of core, but the iron ore concentrate phosphorus content that its technique obtains is relatively high；Another kind is direct
Reduction roasting --- Dephosphorising agent is added while magnetic separation process and is handled, then reduced iron powder is obtained with electric furnace smelting, it is subsequent logical
Superfusion divide and etc. further reduced iron powder is handled.The iron concentrate grade that above two treatment process obtains is not high,
And it still also needs to solve the problems, such as dephosphorization in subsequent treatment process.And second of processing mode is although phosphorus content can be obtained
About 0.08% reduced iron powder, but it is higher for being used to still have phosphorus content for electric furnace smelting.
It is anti-that high-phosphor oolitic hematite is because of its special oolitic texture, using magnetizing roast --- magnetic separation, magnetizing roast ---
The group technologies such as flotation can get the higher iron ore concentrate of grade, however by such group technology select come product in
Phosphorus content is still higher, and the direct reprocessing for being unfavorable for product utilizes, and the better Direct Reduction Technology of effect has thus been selected
Ore is handled, the microfine oolitic texture of ore is destroyed by direct-reduction and is changed into thicker granular knot
Structure, the coarse granule ore for possessing this structure are more easier to be screened out, are conducive to improve screening efficiency, to be conducive to improve
The rate of recovery of iron.Further being roasted using drastic reduction --- it is preferable to obtain sorting index for the such ore of magnetic separation process processing
Iron ore concentrate, but with the presence of certain phosphorus content the problem of.
Summary of the invention
The purpose of the present invention is existing high-phosphor oolitic hematite Resource comprehensive utilization method there are aiming at the problem that, explore
Using the new way of high-phosphor oolitic hematite, the side that a kind of high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant is provided
Method.
The present invention proposes the method for preparing high-purity polymeric ferric sulfate flocculant using high-phosphor oolitic hematite, using compared with low temperature
The drastic reduction technology for spending (950~990 DEG C) changes Fe clusters.At this temperature, be present in small part phosphorus in collophane with
The decomposition of collophane can enter iron phase, Fe/P alloy is formed, and other phosphorous oxides is relatively stable, without concern when leaching
The transfer of phosphorus.
The present invention proposes the method for preparing high-purity polymeric ferric sulfate flocculant using high-phosphor oolitic hematite.It is depth first
Reduction changes Fe clusters and magnetic concentrate is made to have good leaching rate in single sulfuric acid leaching, and a large amount of impurity enters leached mud
In；Most of oolitic texture, which is destroyed, simultaneously cracked between iron ores particle and gangue mineral all improves leaching efficiency.
And molten point of processing, so that treated, magnetic concentrate can get the grade of 90% or more iron.
For the purpose for realizing invention, the technical solution of the invention is as follows: by high-phosphor oolitic hematite and borax, lignite and
Na2CO3Mixing roasts 2~3h under conditions of 950~990 DEG C and obtains composite ore, and the composite ore ore grinding extremely -74um of acquisition accounts for 60
~70%, magnetic separation obtains level-one magnetic concentrate, and bituminous coal and 5%Ca (OH) are then added in level-one magnetic concentrate2, 1500~
A point 2~3h is melted under conditions of 1600 DEG C, secondary grinding extremely -25um accounts for 96~98% after cooling, then magnetic separation obtains secondary magnetic separation essence
Mine.18%~20% dilute sulfuric acid is mixed with the secondary magnetic separation concentrate of acquisition according to liquid-solid ratio for 8:1~11:1ml/g,
Under conditions of low whipping speed is 200~250r/min, 20~40min is reacted at room temperature, obtains sulfur acid ferrous iron solidliquid mixture；
Ammonium hydroxide is added and adjusts pH to 5~6, it is ferrous sulfate solution that filtrate is obtained after filtering；Gained ferrous sulfate solution is added 98%
The concentrated sulfuric acid and oxidant reacted, obtain product after filtration washing, obtain high-purity polymeric ferric sulfate flocculant.
Preferably, the high-phosphor oolitic hematite and borax, lignite and Na2CO3By mass are as follows: high-phosphor oolitic hematite
100 parts, 5~7 parts of borax, 30~40 parts of lignite, Na2CO330~40 parts.
Preferably, the high-phosphor oolitic hematite and borax, lignite and Na2CO3Mixed maturing temperature is 975 DEG C, roasting
Time is 2.5h.
Preferably, the level-one magnetic concentrate and bituminous coal, Ca (OH)2By mass are as follows: 100 parts of level-one magnetic concentrate, cigarette
2~3 parts of coal, Ca (OH)25~6 parts.
Preferably, the level-one magnetic concentrate and bituminous coal, Ca (OH)2It is molten that temperature is divided to be 1550 DEG C, it is 2.5h between molten timesharing.
Preferably, the mass concentration of the dilute sulfuric acid is 18%；The volume mass ratio of dilute sulfuric acid and secondary magnetic separation concentrate is
8:1ml/g。
Preferably, the reaction time of the dilute sulfuric acid and secondary magnetic separation concentrate is 30min.
Preferably, the oxidant is hydrogen peroxide.
Preferably, the ferrous sulfate in the ferrous sulfate solution, the sulfuric acid in the concentrated sulfuric acid and hydrogen peroxide are by substance
The ratio of amount are as follows: 100 parts of ferrous sulfate, 40~42 parts of sulfuric acid, 35~37 parts of hydrogen peroxide.
Preferably, the ferrous sulfate is first stirred to react with the concentrated sulfuric acid, and hydroperoxidation is added dropwise afterwards.
The beneficial effects of the present invention are: 1) inventor is surprised to find relatively narrow at 950~990 DEG C by studying for a long period of time
Under lower temperature carry out drastic reduction technology, can preferably refine out iron ore but make the phosphorus content in iron ore lower and
Convenient for being further processed；2) present inventor has further discovered that using Ca (OH) with melting component selections2It is better than carbon with wanting conspicuousness
It is excessively high and be difficult to benefit preferably to solve phosphorus content in high-phosphor oolitic hematite after molten point and secondary magnetic separation for sour calcium and calcium oxide
With the problem of and subsequent high-phosphor oolitic hematite leach the problem of；3) high-phosphor oolitic that after processing, can will be difficult to be utilized
Bloodstone is prepared as high-purity polymeric ferric sulfate flocculant as raw material, turns waste into wealth.
Detailed description of the invention
Fig. 1 is the production technological process of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
Fig. 1 is production technological process of the invention, and according to the flow chart, specific embodiments of the present invention are respectively following
Step:
Case study on implementation 1:
The high-phosphor oolitic hematite that full Iron grade is 42.3% is mixed with the lignite that fixed carbon is 43.11%, according to height
The ratio between mass fraction of phosphorus oolitic hematite and lignite is 100:37, adds Na2CO3With borax and high-phosphor oolitic hematite
The ratio between mass fraction is 31:5:100；It is placed in furnace for testing room and roasts 150min, water cooling after taking-up under conditions of 975 DEG C；
The direct ore grinding of ore after roasting is extremely accounted for 67% for -74 μm, and is 89kAm in magnetic separation strength with drum magnetic separator-1Condition
Lower magnetic separation, obtain phosphorus content be 0.072%, the level-one magnetic concentrate that sulfur content is 0.027%, iron recovery is up to 85.2%；It will
The bituminous coal and Ca (OH) that level-one magnetic concentrate and fixed carbon are 58.77%2It is 2:5:100 mixing according to mass ratio, seals
It is placed in furnace, is warming up to 1550 DEG C of roasting 150min, high temperature melting point after cooling extremely accounts for ore secondary grinding for -25 μm
97%, it in magnetic separation strength is 89kAm with drum magnetic separator-1Under conditions of magnetic separation, obtain phosphorus content be 0.061%, Iron grade
For 97.75% secondary magnetic separation concentrate, main component is fe；Take 18% dilute sulfuric acid by dilution heat of sulfuric acid and secondary magnetic separation
The ratio of concentrate is 8:1ml/g hybrid reaction 25min；It is 5 that ammonium hydroxide tune pH is added into mixed solution, is filtered to get filtrate as sulfuric acid
Ferrous iron solution；98% concentrated sulfuric acid is added, the molar ratio of ferrous sulfate and the sulfuric acid in the concentrated sulfuric acid is 1 in ferrous sulfate solution:
0.42, by stirring and dissolving, dripping hydrogen peroxide oxidation (molar ratio of ferrous sulfate and hydrogen peroxide is 1 in ferrous sulfate solution:
0.36, filtering obtains 0.5ml percent of decolourization up to 97.32% polymeric ferric sulfate flocculant.
Case study on implementation 2:
The high-phosphor oolitic hematite that full Iron grade is 42.3% is mixed with the lignite that fixed carbon is 43.11%, according to height
The ratio between mass fraction of phosphorus oolitic hematite and lignite is 100:33, adds Na2CO3With borax and high-phosphor oolitic hematite
The ratio between mass fraction is 35:7:100；It is placed in furnace for testing room and roasts 120min, water cooling after taking-up under conditions of 1300 DEG C；
The direct ore grinding of ore after roasting is extremely accounted for 67% for -74 μm, and is 89kAm in magnetic separation strength with drum magnetic separator-1Condition
Lower magnetic separation, obtain phosphorus content be 0.186%, the level-one magnetic concentrate that sulfur content is 0.036%, iron recovery is up to 73.6%；It will
The bituminous coal and CaO that level-one magnetic concentrate and fixed carbon are 58.77% are that 2:5:100 is mixed according to mass ratio, seal postposition
In in furnace, being warming up to 1550 DEG C of roasting 120min, high temperature melting point accounts for 97% for extremely -25 μm of ore secondary grinding after cooling, uses
Drum magnetic separator is 89kAm in magnetic separation strength-1Under conditions of magnetic separation, obtain phosphorus content be 0.142%, Iron grade is
90.72% secondary magnetic separation concentrate, main component are fes；Take 18% dilute sulfuric acid smart by dilution heat of sulfuric acid and secondary magnetic separation
The ratio of mine is 8:1ml/g hybrid reaction 25min；It is 5 that ammonium hydroxide tune pH is added into mixed solution, is filtered to get filtrate as sulfuric acid Asia
Ferrous solution；98% concentrated sulfuric acid is added, the molar ratio of ferrous sulfate and the sulfuric acid in the concentrated sulfuric acid is 1 in ferrous sulfate solution:
0.42, by stirring and dissolving, dripping hydrogen peroxide carries out oxidation processes to it, ferrous sulfate and hydrogen peroxide in ferrous sulfate solution
Molar ratio be 1:0.36, filtering, obtain 0.5ml percent of decolourization up to 89.64% polymeric ferric sulfate flocculant.
Case study on implementation 3:
The high-phosphor oolitic hematite that full Iron grade is 42.3% is mixed with the lignite that fixed carbon is 43.11%, according to height
The ratio between mass fraction of phosphorus oolitic hematite and lignite is 100:37, adds Na2CO3With borax and high-phosphor oolitic hematite
The ratio between mass fraction is 31:6:100；It is placed in furnace for testing room and roasts 150min, water cooling after taking-up under conditions of 1350 DEG C；
The direct ore grinding of ore after roasting is extremely accounted for 67% for -74 μm, and is 89kAm in magnetic separation strength with drum magnetic separator-1Condition
Lower magnetic separation, obtain phosphorus content be 0.189%, the level-one magnetic concentrate that sulfur content is 0.031%, iron recovery is up to 69.25%；It will
The bituminous coal and Ca (OH) that level-one magnetic concentrate and fixed carbon are 58.77%2It is 2:5:100 mixing according to mass ratio, seals
It is placed in furnace, is warming up to 1550 DEG C of roasting 150min, high temperature melting point after cooling extremely accounts for ore secondary grinding for -25 μm
97%, it in magnetic separation strength is 89kAm with drum magnetic separator-1Under conditions of magnetic separation, obtain phosphorus content be 0.127%, Iron grade
For 92.27% secondary magnetic separation concentrate, main component is fe；Take 18% dilute sulfuric acid by dilution heat of sulfuric acid and secondary magnetic separation
The ratio of concentrate is 8:1ml/g hybrid reaction 30min；It is 5 that ammonium hydroxide tune pH is added into mixed solution, is filtered to get filtrate as sulfuric acid
Ferrous iron solution；98% concentrated sulfuric acid is added, the molar ratio of ferrous sulfate and the sulfuric acid in the concentrated sulfuric acid is 1 in ferrous sulfate solution:
0.42, by stirring and dissolving, dripping hydrogen peroxide carries out oxidation processes to it, ferrous sulfate and hydrogen peroxide in ferrous sulfate solution
Molar ratio be 1:0.36, filtering, obtain 0.5ml percent of decolourization up to 93.21% polymeric ferric sulfate flocculant.
Case study on implementation 4:
The high-phosphor oolitic hematite that full Iron grade is 42.3% is mixed with the lignite that fixed carbon is 43.11%, according to height
The ratio between mass fraction of phosphorus oolitic hematite and lignite is 100:33, adds Na2CO3With borax and high-phosphor oolitic hematite
The ratio between mass fraction is 35:6:100；It is placed in furnace for testing room and roasts 120min, water cooling after taking-up under conditions of 1100 DEG C；
The direct ore grinding of ore after roasting is extremely accounted for 67% for -74 μm, and is 89kAm in magnetic separation strength with drum magnetic separator-1Condition
Lower magnetic separation, obtain phosphorus content be 0.143%, the level-one magnetic concentrate that sulfur content is 0.033%, iron recovery is up to 76.34%；It will
The bituminous coal and CaO that level-one magnetic concentrate and fixed carbon are 58.77% are that 2:5:100 is mixed according to mass ratio, seal postposition
In in furnace, being warming up to 1550 DEG C of roasting 120min, high temperature melting point accounts for 97% for extremely -25 μm of ore secondary grinding after cooling, uses
Drum magnetic separator is 89kAm in magnetic separation strength-1Under conditions of magnetic separation, obtain phosphorus content be 0.123%, Iron grade is
92.14% secondary magnetic separation concentrate, main component are fes；Take 18% dilute sulfuric acid smart by dilution heat of sulfuric acid and secondary magnetic separation
The ratio of mine is 8:1ml/g hybrid reaction 30min；It is 5 that ammonium hydroxide tune pH is added into mixed solution, is filtered to get filtrate as sulfuric acid Asia
Ferrous solution；98% concentrated sulfuric acid is added, the molar ratio of ferrous sulfate and the sulfuric acid in the concentrated sulfuric acid is 1 in ferrous sulfate solution:
0.42, by stirring and dissolving, dripping hydrogen peroxide carries out oxidation processes to it, ferrous sulfate and hydrogen peroxide in ferrous sulfate solution
Molar ratio be 1:0.36, filtering, obtain 0.5ml percent of decolourization up to 92.69% polymeric ferric sulfate flocculant.
Case study on implementation 5:
The high-phosphor oolitic hematite that full Iron grade is 42.3% is mixed with the lignite that fixed carbon is 43.11%, according to height
The ratio between mass fraction of phosphorus oolitic hematite and lignite is 100:37, adds Na2CO3With borax and high-phosphor oolitic hematite
The ratio between mass fraction is 31:7:100；It is placed in furnace for testing room and roasts 150min, water cooling after taking-up under conditions of 1100 DEG C；
The direct ore grinding of ore after roasting is extremely accounted for 67% for -74 μm, and is 89kAm in magnetic separation strength with drum magnetic separator-1Condition
Lower magnetic separation, obtain phosphorus content be 0.147%, the level-one magnetic concentrate that sulfur content is 0.035%, iron recovery is up to 76.21%；It will
The bituminous coal and Ca (OH) that level-one magnetic concentrate and fixed carbon are 58.77%2It is 2:5:100 mixing according to mass ratio, seals
It is placed in furnace, is warming up to 1550 DEG C of roasting 150min, high temperature melting point after cooling extremely accounts for ore secondary grinding for -25 μm
97%, it in magnetic separation strength is 89kAm with drum magnetic separator-1Under conditions of magnetic separation, obtain phosphorus content be 0.102%, Iron grade
For 94.96% secondary magnetic separation concentrate, main component is fe；Take 18% dilute sulfuric acid by dilution heat of sulfuric acid and secondary magnetic separation
The ratio of concentrate is 8:1ml/g hybrid reaction 25min；It is 5 that ammonium hydroxide tune pH is added into mixed solution, is filtered to get filtrate as sulfuric acid
Ferrous iron solution；98% concentrated sulfuric acid is added, the molar ratio of ferrous sulfate and the sulfuric acid in the concentrated sulfuric acid is 1 in ferrous sulfate solution:
0.42, by stirring and dissolving, dripping hydrogen peroxide carries out oxidation processes to it, ferrous sulfate and hydrogen peroxide in ferrous sulfate solution
Molar ratio be 1:0.36, filtering, obtain 0.5ml percent of decolourization up to 95.21% polymeric ferric sulfate flocculant.
From above embodiments 1~5 as can be seen that since the embodiment of the present application selects to carry out drastic reduction under lower temperature,
Obtained level-one magnetic concentrate iron recovery height, sulphur, phosphorus content is low.It is from embodiment 2~3 and embodiment 4~5 as can be seen that molten
Divide and uses Ca (OH)2The secondary magnetic separation concentrate obtained after magnetic separation again carries out molten point of resulting secondary magnetic separation relative to using CaO
The Iron grade of concentrate will be obvious high and phosphorus content is obvious low.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment only shows
Example property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to upper
State embodiment be changed, modify, replacement and variant.
Claims (10)
1. a kind of method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant, it is characterised in that: this method includes
Following steps:
1) by high-phosphor oolitic hematite and borax, lignite and Na2CO3Mixing roasts 2~3h under conditions of 950~990 DEG C and obtains
Obtain composite ore；
2) the composite ore ore grinding obtained accounts for 60~70% to -74um, and magnetic separation obtains level-one magnetic concentrate；
3) bituminous coal and Ca (OH) are added in level-one magnetic concentrate2, a point 2~3h is melted under conditions of 1500~1600 DEG C, through cooling
Secondary grinding extremely -25um accounts for 96~98% afterwards, then magnetic separation obtains secondary magnetic separation concentrate；
It 4) is that 8:1~11:1ml/g is mixed according to liquid-solid ratio by 18%~20% dilute sulfuric acid and the secondary magnetic separation concentrate of acquisition
It closes, under conditions of low whipping speed is 200~250r/min, reacts at room temperature 20~40min, obtain the mixing of sulfur acid ferrous iron solid-liquid
Object；Ammonium hydroxide is added and adjusts pH to 5~6, it is ferrous sulfate solution that filtrate is obtained after filtering；
5) 98% concentrated sulfuric acid is added in gained ferrous sulfate solution and oxidant is reacted, product is obtained after filtration washing,
Obtain high-purity polymeric ferric sulfate flocculant.
2. the method that high-phosphor oolitic hematite according to claim 1 prepares high-purity polymeric ferric sulfate flocculant, feature
It is:
The high-phosphor oolitic hematite and borax, lignite and Na2CO3By mass are as follows: 100 parts of high-phosphor oolitic hematite, borax 5
~7 parts, 30~40 parts of lignite, Na2CO330~40 parts.
3. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is:
The high-phosphor oolitic hematite and borax, lignite and Na2CO3Mixed maturing temperature is 975 DEG C, calcining time 2.5h.
4. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is:
The level-one magnetic concentrate and bituminous coal, Ca (OH)2By mass are as follows: 100 parts of magnetic concentrate, 2 parts of bituminous coal, Ca (OH)25~6
Part.
5. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is:
The level-one magnetic concentrate and bituminous coal, Ca (OH)2It is molten that temperature is divided to be 1550 DEG C, it is 2.5h between molten timesharing.
6. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is:
The mass concentration of the dilute sulfuric acid is 18%；The volume mass ratio of dilute sulfuric acid and secondary magnetic separation concentrate is 8:1ml/g.
7. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is: the reaction time of the dilute sulfuric acid and secondary magnetic separation concentrate is 30min.
8. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is: the oxidant is hydrogen peroxide.
9. the method that high-phosphor oolitic hematite according to claim 1 or 2 prepares high-purity polymeric ferric sulfate flocculant, special
Sign is: ferrous sulfate in the ferrous sulfate solution and 98% the concentrated sulfuric acid in sulfuric acid and hydrogen peroxide by substance amount
Mixed proportion are as follows: 100 parts of ferrous sulfate, 40~42 parts of sulfuric acid, 35~37 parts of hydrogen peroxide.
10. the method that high-phosphor oolitic hematite according to claim 9 prepares high-purity polymeric ferric sulfate flocculant, feature
Be: the ferrous sulfate solution is first stirred to react with 98% concentrated sulfuric acid, and hydroperoxidation is then added dropwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438808.0A CN110255628A (en) | 2019-05-24 | 2019-05-24 | The method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438808.0A CN110255628A (en) | 2019-05-24 | 2019-05-24 | The method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110255628A true CN110255628A (en) | 2019-09-20 |
Family
ID=67915348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910438808.0A Pending CN110255628A (en) | 2019-05-24 | 2019-05-24 | The method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110255628A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912111A (en) * | 2012-09-12 | 2013-02-06 | 北京矿冶研究总院 | Treatment method of oolitic hematite containing phosphorus |
| CN107572596A (en) * | 2017-09-14 | 2018-01-12 | 武汉科技大学 | A kind of high-phosphor oolitic hematite prepares high-purity iron oxide red method |
| CN108893601A (en) * | 2018-07-26 | 2018-11-27 | 安徽工业大学 | A kind of method of high-phosphorus hematite microwave reduction-magnetic separation dephosphorization |
-
2019
- 2019-05-24 CN CN201910438808.0A patent/CN110255628A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912111A (en) * | 2012-09-12 | 2013-02-06 | 北京矿冶研究总院 | Treatment method of oolitic hematite containing phosphorus |
| CN107572596A (en) * | 2017-09-14 | 2018-01-12 | 武汉科技大学 | A kind of high-phosphor oolitic hematite prepares high-purity iron oxide red method |
| CN108893601A (en) * | 2018-07-26 | 2018-11-27 | 安徽工业大学 | A kind of method of high-phosphorus hematite microwave reduction-magnetic separation dephosphorization |
Non-Patent Citations (5)
| Title |
|---|
| 刘先培等: "不同添加剂对鲕状赤铁矿碳热还原影响的热力学研究", 《资源信息与工程》 * |
| 孙体昌等编: "《难处理铁矿石煤基直接还原磁选技术》", 31 July 2017, 冶金工业出版社 * |
| 张中和等: "《给水与废水处理国际会议论文集》", 30 June 1994, 中国建筑工业出版社 * |
| 揭晓武等: "高磷鲕状赤铁矿金属化还原焙烧—磁选—熔分新工艺研究", 《矿冶》 * |
| 许言等: "碳酸钠在高磷鲕状赤铁矿直接还原中的作用", 《东北大学学报(自然科学版)》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106824543B (en) | A kind of method of copper smelting slag recycling copper | |
| CN109825700A (en) | A kind of method of valuable metal in low-temperature atmosphere-pressure selective extraction nickel sulfide concentrate | |
| CN102094119A (en) | Method for preparing electrolytic manganese metal with low-grade pyrolusite wet leaching | |
| CN101550483A (en) | Combined flow path processing method of laterite nickel | |
| CN102101699A (en) | Method for extracting pyrolusite and producing manganese sulfate by utilizing by-product in production of titanium white | |
| CN106119556A (en) | A kind of Application way of steel plant zinc smoke ash | |
| CN110735032B (en) | Vanadium-titanium-iron paragenetic ore treatment process | |
| CN103805789B (en) | A kind of method of comprehensively recovering valuable metal of copper nickel slag | |
| CN102703697B (en) | Method for recovering rare earth-niobium-ferrum paragenic ore | |
| CN107557567B (en) | A kind of method of high-phosphorus iron ore dephosphorization | |
| CN111100988A (en) | Method for reducing and utilizing multi-metal tailings | |
| CN116239401B (en) | Liquid steel slag treatment method for steel mill | |
| CN105441674A (en) | Method for comprehensive recovery of phosphor and rare earth from monazite-containing phosphate rock | |
| CN104313336B (en) | Zinc-containing pyrite cinder processing method | |
| CN107572596B (en) | Method for preparing high-purity iron oxide red from high-phosphorus oolitic hematite | |
| CN111100996A (en) | Method for preparing vanadium oxide from acidic low-concentration vanadium liquid | |
| CN110255628A (en) | The method that high-phosphor oolitic hematite prepares high-purity polymeric ferric sulfate flocculant | |
| CN114214521B (en) | Method for recycling iron and copper in copper slag | |
| CN106702165B (en) | A method of leaching niobium scandium from tailing | |
| CN103834810A (en) | Method for producing copper-cobalt-nickel bulk concentrate by use of copper-nickel slag | |
| CN113976331A (en) | Method for preparing high-purity pyrite by flotation mass transfer dynamics regulation | |
| CN111748694A (en) | Method for enriching and recovering vanadium resource in vanadium-rich slag | |
| CN107287418B (en) | Utilize alkali leaching, the method for pickling processes high-ferrum low-silicon laterite iron ore | |
| CN107354292B (en) | A method of carrying iron from high-ferrum low-silicon laterite iron ore | |
| CN116332210B (en) | Method for extracting phosphorus from phosphate tailings step by step and comprehensively utilizing full components |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190920 |