CN108998659A - With the process of water chestnut brown ocher and v-ti magnetite miberal powder processing pellet - Google Patents
With the process of water chestnut brown ocher and v-ti magnetite miberal powder processing pellet Download PDFInfo
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- CN108998659A CN108998659A CN201811048946.XA CN201811048946A CN108998659A CN 108998659 A CN108998659 A CN 108998659A CN 201811048946 A CN201811048946 A CN 201811048946A CN 108998659 A CN108998659 A CN 108998659A
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- water chestnut
- ball
- miberal powder
- chestnut brown
- brown ocher
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- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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- 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
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- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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Abstract
The invention belongs to technical field of metallurgy industry, are specifically related to a kind of process with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet.Three critical processes are controlled including mixed ingredients pelletizing process, cloth and drying grate process, rotary kiln-ring cold machine process: by water chestnut brown ocher and v-ti magnetite miberal powder with certain proportion profit mill mixing, it is controlled by balling process, reach the intensity and granularity of green-ball needs, it is delivered to drying grate and pre- thermal oxide is dried, by controlling its drying and preheating process to reduce explosion, it is cooling that high-temperature concretion is carried out into rotary kiln ring cold machine, control temperature avoids formation rings in a kiln, hot-bulb adhesion, produces the finished ball nodulizing for meeting blast furnace ironmaking needs.This process passes through commerical test and is succeeded, and has filled up the domestic blank in the field, makes full use of the water chestnut limonite of various regions rich reserves, vanadium titano-magnetite to process good iron-smelting raw material, has very big economic benefit and vast market prospect.
Description
Technical field
The invention belongs to technical field of metallurgy industry, it is specifically related to a kind of water chestnut brown ocher and v-ti magnetite miberal powder and adds
The process of work pellet.
Background technique
Pellet is a kind of method of artificial block stock, is one and granular material is become physical property and chemical composition
It can satisfy the process of next step processing request.With the development of steel and iron industry, raw material needed for smelting iron will be more and more big, and for
The rich lump ore for directly entering furnace is less and less, and pellet is because of its good metallurgical performance, so that it is since the sixties in last century
It is greatly developed, the blast furnace process effect of pellet is substantially better than other raw materials.
Pelletizing method becomes artificial blocky former with another method sintering process of its huge superiority and agglomeration side by side at present
Two big methods of material.Pelletizing method can be divided into high-temperature concretion and low-temperature concretion two types by consolidation method point, and high-temperature concretion divides again
For six kinds of main methods such as oxidizing roasting pelletizing, reduction roasting pelletizing, magnetizing roast pelletizing, sodium pelletizing and chlorination pelletizing,
Middle oxidizing roasting pelletizing is the high-temperature concretion method of mainstream, processes ore agglomerates suitable for the Iron Ore Powder based on magnetic iron ore.It is real
In the production of border, since dosage is big in steel and iron industry for magnetite powder, increased costs, buying transportation range increase etc. is picked up, are improved
Pelletizing processing cost, and it is the mineral such as water chestnut limonite and vanadium titano-magnetite some areas rich reserves, cheap, pass through high temperature
The processing of the pelletizings such as roasting, can be used as good iron-smelting raw material, development prospect is wide.
The brown concentrate powder of water chestnut is the mineral intergrowth (red mine) of siderite and limonite, and the brown concentrate powder feature of water chestnut is that grade is lower, is burnt
Damage is big, and there are the crystallizations water and ferrous carbonate to decompose when drying and preheating, and dry bulb intensity is low；V-ti magnetite concentrate powder have granularity compared with
Slightly, the features such as specific surface area is small, and mineral powder granular surface hydrophilicity is poor, and when pelletizing is not easy balling-up, adds with addition of water chestnut brown ocher at present
Work production pellet is still in the laboratory research stage.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of water chestnut brown ocher and v-ti magnetite miberal powder to add
The process of work pellet.This process makes full use of the water chestnut limonite of various regions rich reserves, vanadium titano-magnetite processing life
Good iron-smelting raw material is produced, there is very big economic benefit and vast market prospect.
It is of the present invention with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet process, specifically include with
Lower step:
(1) mixed ingredients pelletizing process
After first mixing water chestnut brown ocher, v-ti magnetite miberal powder and bentonite with certain proportion, mixture is dried
Dry and profit mill pretreatment, processes satisfactory green-ball by balling process；
(2) cloth and drying grate process
The qualified green-ball of processing is delivered to drying grate by roll screen distributing device, preheating is dried；
(3) rotary kiln-ring cold machine process
Pre- hot-bulb after drying and preheating enters rotary kiln and ring cold machine carries out the cooling and further oxidation of high-temperature roasting,
Pellet is prepared.
Wherein:
Mix size described in step (1) requires the pellet less than 0.074mm to be greater than 70%, and moisture requirement is less than
8%.
Balling process described in step (1) carries out in balling disk (-sc), grade composition is controlled in balling process, it is desirable that green-ball
Granularity be located at the section 8~12mm be greater than 85%, it is desirable that shatter strength of green pellet (is freely fallen in 8-10 times/ball in 0.5m height
Under without rupture number).
It controls fog in balling process described in step (1) to add, aqueous in reduction green-ball, water content control exists in green-ball
Within 8.5%, to improve the cracking temperature of green pel let in drying process.
Based on mass fraction, raw material composition is as follows: water chestnut brown ocher: 36-50%, sefstromite powder: 49-63%, swelling
Soil: 1-1.8%.
Bentonite adding proportion is reduced in balling process, burden control is within 1.8%, to reduce during green-ball has bad luck
Adhesion and deformation.
Because there is the crystallization water and ferrous carbonate decomposition during heating in water chestnut brown ocher, it is desirable that made green-ball institute is aqueous
It is point lower, appropriate diminution sphere diameter, and improve drop strength.By reducing fog, balling disk (-sc) inclination angle is adjusted, the control of green-ball moisture exists
Within 8.5%, green-ball particle size diameter 8-12mm proportion reaches 85% or more, and drop strength reaches 8-10 times/ball, after being
Green-ball is easily dried, reduces to burst and lay the foundation when continuous process drying and preheating.
Roll screen distributing device described in step (2) includes big ball roll screen device and bead roll screen device；The drying grate machine speed
Control is in 23-26Hz.Machine speed, rotary kiln speed, ring cold machine ring speed etc. indicate speed with Frequency Converter Control with frequency converter frequency.
The green-ball that step (2) comes to conveying particular by big ball roll screen device and bead roll screen device is further point
Grade, adjusts large and small roll screen gap, the green-ball or powder of granularity < 6mm and > 12mm is screened out, green-ball particle size diameter 8-12mm institute
Accounting example reaches 85% or more；It is allowed to be evenly distributed on progress drying and preheating and preliminary oxidation, green-ball on chain grate machine combing
Ulking thickness on bed is controlled in 120mm.
One section of the drying of drying grate described in step (2), two sections dry, preheating section petticoat pipe temperature control requirement are respectively
300 DEG C, 600 DEG C, 930 DEG C, it is desirable that 13 box temperatures steadily rise, and form gradient.
It controls 13 box temperatures of drying grate during drying and preheating steadily to rise, forming gradient is specifically to control 13 wind
Case temperature gradient DEG C gentle heating gradient of formation, each bellows heating gradient from 80 DEG C to 460 should not exceed 50 DEG C.
The green-ball to come is conveyed by mixed ingredients pelletizing process, is further classified by size roll screen distributing device, is adjusted
Whole size roll screen gap, green-ball or powder by granularity less than 6mm and greater than 12mm screen out, are allowed to be evenly distributed on grate
On bed, ulking thickness of the green-ball in grate is controlled in 120mm.Drying grate machine speed is controlled in 23-26Hz, compares normal material distributing machine
Speed reduces 15-20%.The circulating fan air door scale for adjusting main exhauster and drying grate two sides keeps drying grate one section dry, dry
Dry two sections, the control of preheating section petticoat pipe temperature respectively 300 DEG C, 600 DEG C, 930 DEG C, adjust each bellows exit butterfly valve, drying grate 13
A box temperature gradient DEG C gentle heating gradient of formation from 80 DEG C to 460, each bellows heating gradient is less than 50 DEG C.Pass through mixture
The adjustment of material pelletizing process, cloth and drying grate process, intensity is 300-400N/ ball before pre- hot-bulb enters rotary kiln, is broken
Ratio is split less than 10%.
The control of rotary kiln high temperature dot described in step (3) requires 1240-1260 DEG C, and the cooling one section of wind of ring cold machine requires wind
Amount increases, air door open to 15% (be normally 8-10%), increase air quantity, increase cooling time to 1 hour (normal cooling time is
45min), one section is 1010 DEG C for temperature, and it (is normally 760mm) that circular cooler trolley fabric thickness, which requires to control in 700mm,.
Ring cold machine active cooling surface product is 50m in this technique2If process implementing process active cooling surface product is larger, can
Omit the process relevant operation.
Rotary kiln head-shield temperature described in step (3) is controlled at 950-960 DEG C, to stablize high temperature dot temperature range.
After pre- hot-bulb enters rotary kiln ring cold machine process, the cooling and further oxidation of high-temperature roasting is carried out.Stablize rotary kiln
Temperature, at 1240-1260 DEG C, temperature is excessively high to cause energy consumption unrestrained to the control of kiln head cover temperature for high temperature dot control in 950-960 DEG C, kiln
Take, and easily causes powder hot-bulb in kiln and be bonded in Yao Bishang.When hot-bulb enters ring cold machine, the requirement of circular cooler trolley fabric thickness
Control (is normally 760mm), the cooling one section of air door of fan of ring cold machine, which is opened to 15%, (to be normally 8-10%), increase wind in 700mm
Amount, one section of fan outlet are 1010 DEG C for temperature, increase cooling time to 1 hour (normal cooling time is 45min), make heat in this way
Ball avoids mutually being adhered in cooling procedure, and abundant secondary oxidation.Ring cold machine described in rotary kiln ring cold machine process is effectively cooling
Area is 50m2, if active cooling surface product is larger during process implementing, can omit the process relevant operation.
Process main purpose of the present invention is for during water chestnut brown ocher processing enriched ore, when heating
There are the crystallization water and ferrous carbonates to decompose, and caused easy explosion, product are not easy the features such as balling-up intensity is low, by with vanadium titanium magnetic
Iron Ore Powder mixed pelletizing, by v-ti magnetite miberal powder during heating oxidation heat liberation, generate liquid phase and consolidate enhancing product strength,
To reach the needs for meeting metallurgical industry production.
Process of the present invention is primarily adapted for use in 600,000 tons of drying grate-rotary kiln-circular cooler technique productions of annual output
Line, according to main point three processes of controlling unit point: mixed ingredients pelletizing process (I section of process), cloth and (II section of drying grate process
Process), rotary kiln-ring cold machine process (III section of process).
This process has passed through commerical test using water chestnut brown ocher and v-ti magnetite miberal powder processing mixing pellet,
Overcome during drying and roasting the crystallization water and ferrous carbonate to be easy the difficult points such as explosion, intensity is low caused by decomposing, roasts out finished product
Pellet compression strength reaches 2000N/ ball or more, meets GB/T 27692-2011 requirement, is able to satisfy ironmaking production needs.
Compared with the prior art, the present invention has the following beneficial effects:
(1) 2000N/ ball or more is reached using the finished ball nodulizing compression strength of this process preparation, meets GB/
T27692-2011 requirement, is able to satisfy ironmaking production needs.
(2) this process makes full use of the water chestnut limonite of various regions rich reserves, vanadium titano-magnetite processing good
Iron-smelting raw material has very big economic benefit and vast market prospect.
Detailed description of the invention
Fig. 1 is pellet processing process figure.
Specific embodiment
The invention will be further described with reference to embodiments.
Embodiment 1
With the process of water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, the technique described in the present embodiment 1
Pellet described in method is made of water chestnut brown ocher, sefstromite powder and bentonite, the mass percentage of food ingredient
Are as follows: water chestnut brown ocher: 36%, sefstromite powder: 62.2%, bentonite: 1.8%；Sefstromite powder selects ring in the present embodiment 1
Ball sefstromite powder.
Raw material correlation physico-chemical analysis in embodiment 1 is shown in Table 1.
Raw material correlation physico-chemical analysis in 1 embodiment 1 of table
| Title | TFe | FeO | SiO2 | Al2O3 | S | TiO2 | Moisture | Granularity (- 0.074mm) |
| Sefstromite powder | 56.20 | 27.30 | 4.94 | 3.23 | 0.24 | 9.9 | 5.94 | 70.37 |
| Water chestnut brown ocher | 43.63 | 2.67 | 7.92 | 1.32 | 0.075 | 0.54 | 10.04 | 65.15 |
For example above-mentioned process I~III of controlling of production process.
Mixed ingredients pelletizing process abbreviation process I.
In process I, water chestnut brown ocher, v-ti magnetite miberal powder and bentonite carry out proportion composition mixing according to aforementioned proportion
Material, the mass percentage of food ingredient are as follows: water chestnut brown ocher: 36%, sefstromite powder: 62.2%, bentonite: 1.8%.
In process I, the mixture formed according to a certain percentage pre-processes it by drying profit mill, into pelletizing
Disk pelletizing obtains green-ball.
Cloth and drying grate process abbreviation process II.
The green-ball to come is conveyed by process I, is carried out after being further classified by the size roll screen distributing device in process II,
It is evenly distributed on chain grate machine and carries out drying and preheating and preliminary oxidation.
Rotary kiln ring cold machine process abbreviation process III.
After pre- hot-bulb enters process III, the cooling and further oxidation of high-temperature roasting is carried out by rotary kiln ring cold machine.
In the present embodiment 1 mixture process I by drying profit mill after its granularmetric composition be less than 0.074mm be 76.02%.
Shatter strength of green pellet in the present embodiment 1 by the generation of I pelletizing of process is 10.5 time/balls, and moisture content is
8.43%.
Process II is sized roll screen gap in the present embodiment 1, granularity is less than 6mm and greater than the green-ball of 12mm to meet
Or powder screens out.
Process II enters the green-ball of drying grate in the present embodiment 1, and bed of material ulking thickness in grate is 120mm (normal
For 140mm), it is 25-26Hz (Frequency Converter Control) that drying grate, which runs machine speed, reduces 15-20% compared to normal material distributing machine speed.
Process II is 389N/ by the pre- hot-bulb compression strength of drying grate drying and preheating in the present embodiment 1, ruptures ratio
It is 5%.
It is by III high-temperature roasting of process oxidation and finished ball nodulizing TFe content after cooling in the present embodiment 1
53.19%, 2350N/ ball of compression strength average out to.
1 technology controlling and process pellet iron-content produced is 53.19% through this embodiment, and theoretical calculation iron-content should be
51.35%, laboratory data is shown, water chestnut brown ocher burn out rate is 18-20%, is equivalent to during preheating and baking with knot
Brilliant water and ferrous carbonate decompose, and increase the Iron grade of product.
Embodiment 2
A kind of process with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet described in the present embodiment 2,
Process is same as Example 1, the difference is that: the mass percentage of its food ingredient are as follows: water chestnut brown ocher:
45%, sefstromite powder: 53.4%, bentonite: 1.6%；Sefstromite powder used in the present embodiment 2 and water chestnut brown ocher are former
Expect same as Example 1, only dosage is different.
In the present embodiment 2 mixture process I by drying profit mill after its granularmetric composition be less than -0.074mm be
73.67%, it is 9.2 times/, moisture content 8.37% by the shatter strength of green pellet that I pelletizing of process generates.
Process II is sized roll screen gap in the present embodiment 2, granularity is less than 6mm and greater than the green-ball of 12mm to meet
Or powder screens out.
Process II enters the green-ball of drying grate in the present embodiment 2, and bed of material ulking thickness in grate is 120mm (normal
For 140mm), it is 25-26Hz (Frequency Converter Control) that drying grate, which runs machine speed, reduces 15-20% compared to normal material distributing machine speed.
In 2 process II of the present embodiment, it is 24-25Hz that drying grate, which runs machine speed, by the pre- hot-bulb of drying grate drying and preheating
Compression strength is 352N/ ball, and rupture ratio is 6%.
It is by III high-temperature roasting of process oxidation and finished ball nodulizing TFe content after cooling in the present embodiment 2
53.75%, 2125N/ ball of compression strength average out to.
Embodiment 3
A kind of process with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet described in the present embodiment 3,
Process is same as Example 1, the difference is that: the mass percentage of its food ingredient are as follows: water chestnut brown ocher:
49%, sefstromite powder: 49.6%, bentonite: 1.4%；Sefstromite powder used in the present embodiment 3 and water chestnut brown ocher are former
Expect same as Example 1, only dosage is different.
In the present embodiment 3 mixture process I by drying profit mill after its granularmetric composition be less than 0.074mm be 73.54%,
It is 9.5 times/, moisture content 8.33% by the shatter strength of green pellet that I pelletizing of process generates.
Process II is sized roll screen gap in the present embodiment 3, granularity is less than 6mm and greater than the green-ball of 12mm to meet
Or powder screens out.
In 3 process II of the present embodiment, it is 23-24Hz that drying grate, which runs machine speed, by the pre- hot-bulb of drying grate drying and preheating
Compression strength is 318N/ ball, and rupture ratio is 9%.
It is by III high-temperature roasting of process oxidation and finished ball nodulizing TFe content after cooling in the present embodiment 3
53.33%, 2057N/ ball of compression strength average out to.
Respectively by the green-ball in Examples 1 to 3, the pre- hot-bulb after preheating and baking and finished pellet and existing common oxidation magnetic
The performance indicator of iron ore pellets mine compares, and performance comparison result is shown in Table 2.
Pre- hot-bulb after green-ball, preheating and baking and finished pellet and existing common oxidation magnet in 2 Examples 1 to 3 of table
Mine pellet
Performance indicator comparison
It is compared by the pellet performance indicator of table 2, it is found that shatter strength of green pellet is generally higher than in embodiment 1-3
Common Magnetite Pellets improve its burst temperature section mainly for guaranteeing to reduce explosion during its drying and preheating.It is practical
On, bentonite addition mass percent is respectively 1.8%, 1.6%, 1.4% in Examples 1 to 3, (common magnetic mine pelletizing swelling
2%) native mass percent is generally, on a declining curve, and shatter strength of green pellet is originally maintained at 9-10 times/grain, in balling process
With its ratio increase, bentonite consumption reduce, illustrate water chestnut brown ocher compared to common magnetite powder have preferable hydrophily and
Caking property.
It is compared by each embodiment of table 2 and common pellet performance indicator, it is found that roasting is preheated in embodiment 1-3
Pre- hot-bulb and finished pellet compression strength after burning are reduced as water chestnut brown ocher increases with addition of ratio, pre- hot-bulb percentage of damage with
Raising.The microcosmic microexamination in laboratory, the brown Iron concentrate ratio of water chestnut increase, the crystallization water and carbonate decomposition during drying and preheating
It influences to increase, finished pellet interior porosity increases, and compression strength declines therewith.
As water chestnut brown ocher adding proportion increases it can be seen from above-described embodiment 1-3, finished ball nodulizing compression strength
Reduce, within certain critical value, roast out finished ball nodulizing compression strength up to 2000N/ ball more than, meet GB/
T27692-2011 requirement, is able to satisfy ironmaking production needs.
Claims (10)
1. a kind of process with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, it is characterised in that: specifically include
Following steps:
(1) mixed ingredients pelletizing process
First by water chestnut brown ocher, v-ti magnetite miberal powder and bentonite with certain proportion mix after, by mixture carry out drying and
Profit mill pretreatment, processes satisfactory green-ball by balling process；
(2) cloth and drying grate process
The qualified green-ball of processing is delivered to drying grate by roll screen distributing device, preheating is dried；
(3) rotary kiln-ring cold machine process
Pre- hot-bulb after drying and preheating enters rotary kiln and ring cold machine carries out the cooling and further oxidation of high-temperature roasting, preparation
Obtain pellet.
2. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: mix size described in step (1) requires to be greater than 70% less than 0.074mm, and moisture requirement is less than 8%.
3. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: balling process described in step (1) is carried out in balling disk (-sc), grade composition is controlled in balling process, it is desirable that raw
The section that spherolite degree is located at 8~12mm is greater than 85%, it is desirable that shatter strength of green pellet is in 8-10 times/ball.
4. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: controlling fog in balling process described in step (1) and adds, aqueous in reduction green-ball, water content control exists in green-ball
Within 8.5%.
5. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: based on mass fraction, water chestnut brown ocher, v-ti magnetite miberal powder and bentonitic mass ratio are as follows: water chestnut brown ocher: 36-
50%, sefstromite powder: 49-63%, bentonite: 1-1.8%.
6. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: roll screen distributing device described in step (2) includes big ball roll screen device and bead roll screen device；The drying grate machine speed control
System is in 23-26Hz.
7. the process according to claim 1 or 6 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet,
Be characterized in that: the green-ball that step (2) comes to conveying particular by big ball roll screen device and bead roll screen device is further point
Grade, adjusts large and small roll screen gap, the green-ball of granularity < 6mm and > 12mm or powder is screened out, are allowed to be evenly distributed on drying grate
In grate, ulking thickness of the green-ball in grate is controlled in 120mm.
8. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: intensity is 300-400N/ ball before pre- hot-bulb described in step (3) enters rotary kiln, and rupture ratio is less than
10%.
9. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: the control of rotary kiln high temperature dot described in step (3) requires 1240-1260 DEG C, and the cooling one section of wind of ring cold machine requires wind
Amount increases, and air door is opened to 15%, one section for temperature as 1010 DEG C, and circular cooler trolley fabric thickness requires control in 700mm.
10. the process according to claim 1 with water chestnut brown ocher and v-ti magnetite miberal powder processing pellet, special
Sign is: the control of rotary kiln head-shield temperature described in step (3) high temperature dot control in 950-960 DEG C, rotary kiln exists
1240-1260℃。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110791645A (en) * | 2019-11-25 | 2020-02-14 | 承德信通首承矿业有限责任公司 | Production method of vanadium-titanium alkaline pellet ore |
| CN112391525A (en) * | 2020-11-27 | 2021-02-23 | 攀枝花钢企米易白马球团有限公司 | Preparation method and preparation system of vanadium-titanium pellets |
| CN116179846A (en) * | 2023-01-29 | 2023-05-30 | 中天钢铁集团(南通)有限公司 | Pellet production method with high proportion of hematite |
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| CN101003851A (en) * | 2006-09-22 | 2007-07-25 | 攀钢集团钢城企业总公司球团厂 | Method for producing high titanium type acid pellet vanadium titanium by chain grate - rotary kiln |
| CN101649391A (en) * | 2009-06-26 | 2010-02-17 | 中冶长天国际工程有限责任公司 | Green pellet and pellet ore preparation method |
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| CN102277462A (en) * | 2011-08-17 | 2011-12-14 | 北京科技大学 | Method for comprehensive utilization of vanadium titanomagnetite |
| CN103627894A (en) * | 2013-11-29 | 2014-03-12 | 攀钢集团攀枝花钢钒有限公司 | Method for sintering vanadium/titanium magnetite concentrate and siderite |
| WO2018152628A1 (en) * | 2017-02-24 | 2018-08-30 | Vanadiumcorp Resources Inc. | Metallurgical and chemical processes for recovering vanadium and iron values from vanadiferous titanomagnetite and vanadiferous feedstocks |
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| CN110791645A (en) * | 2019-11-25 | 2020-02-14 | 承德信通首承矿业有限责任公司 | Production method of vanadium-titanium alkaline pellet ore |
| CN112391525A (en) * | 2020-11-27 | 2021-02-23 | 攀枝花钢企米易白马球团有限公司 | Preparation method and preparation system of vanadium-titanium pellets |
| CN116179846A (en) * | 2023-01-29 | 2023-05-30 | 中天钢铁集团(南通)有限公司 | Pellet production method with high proportion of hematite |
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