CN106591567A - Method for restraining and reducing reduction degradation of iron sand pellets and system special for method for restraining and reducing reduction degradation of iron sand pellets - Google Patents
Method for restraining and reducing reduction degradation of iron sand pellets and system special for method for restraining and reducing reduction degradation of iron sand pellets Download PDFInfo
- Publication number
- CN106591567A CN106591567A CN201611013850.0A CN201611013850A CN106591567A CN 106591567 A CN106591567 A CN 106591567A CN 201611013850 A CN201611013850 A CN 201611013850A CN 106591567 A CN106591567 A CN 106591567A
- Authority
- CN
- China
- Prior art keywords
- sea sand
- pellets
- ore deposit
- iron sand
- green pellets
- 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
- 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
-
- 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
- C22B1/16—Sintering; Agglomerating
-
- 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
-
- 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
- C22B1/2413—Binding; Briquetting ; Granulating enduration of pellets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for restraining and reducing reduction degradation of iron sand pellets and a system special for the method for restraining and reducing the reduction degradation of the iron sand pellets. The method for restraining and reducing the reduction degradation of the iron sand pellets comprises the steps that iron sand is ground to be fine, so that iron sand powder is obtained; the iron sand powder is evenly mixed with bentonite, so that a mixture is obtained; the mixture is made into green pellets in a pelletizer, wherein when the mixture in made into the green pellets in the pelletizer, a boric acid water solution is added in the growing process of the green pellets to be used as a pelletizing solution; and the green pellets are roasted, so that the pellets are obtained. The invention further discloses the system special for the method for restraining and reducing the reduction degradation of the iron sand pellets. According to the method for restraining and reducing the reduction degradation of the iron sand pellets and the system special for the method for restraining and reducing the reduction degradation of the iron sand pellets, by the adoption of the feature that boric acid is low in melting point, the liquid phase forming temperature is lowered, the content of calcium ferrite in the pellets is increased, and the reduction temperature of phosphosiderite pellets is greatly lowered; and in this way, the metallurgical performance of the phosphosiderite pellets in the reduction process is greatly improved, serious degradation at the high temperature is restrained, the problem that reduction degradation is serious during blast furnace smelting of the iron sand is effectively solved, the energy consumption is greatly lowered, the furnace condition is lowered, and economic benefits are increased.
Description
Technical field
The present invention relates to the method and its dedicated system of a kind of suppression and reduction sea sand pellet ore reduction efflorescence, belong to sea sand
Ore deposit metallurgical briquetting preparation field.
Background technology
Sea sand ore deposit is the downward enrichment placer iron that a kind of area by the sea is formed by river, wave, tide and action of ocean current
Ore deposit, its main valuable mineral component is vanadium, titanium and iron etc., after ore dressing, can obtain the iron ore concentrate containing vanadium titanium.Southeast Asia,
The sea sand ore reserves of the coastal states such as Australia, New Zealand enriches, and iron content is more stable, gradually receives publicity in recent years.
The traditional treatment method of sea sand ore deposit has sintering process and pelletizing method, and allocating excessive vanadium titanium sea sand ore deposit in sintering into will cause
Sintering deposit cold strength and low-temperature reduction disintegration can be deteriorated, it is impossible to meet the normal smelting requirements of blast furnace.Comparatively, pellet
There is more superior metallurgical performance than sintering deposit, epigranular, intensity are good, reducing property is good, but also have weak point, also can exist
The problem of reduction degradation.
Number of patent application is that 201510003130.5 patent discloses a kind of preprocess method of sea sand ore deposit, its main skill
Art scheme is：Sea sand ore deposit and coal dust are carried out into mixed processing, carries out being pressed into block pelletizing, then carry out reduction treatment；The method
The reduction degradation braking measure occurred in metallurgical reduction process is not referred to.
Number of patent application is that 201510478568.9 patent discloses a kind of furnace cupola and processes sea sand ore deposit and contains with steel plant
The method of iron carbon dust mixture, its main technical schemes include：Sea sand breeze and steel plant iron content carbon dusts are mixed
Cold-pressing balls agglomerate, in soaring furnace reduction, fusing and slag sluicing system；The process describe sea sand ore deposit how agglomeration, reduce
Binding agent usage amount, the purpose to reduce coke ratio.But do not propose that difficult reduction, reduction degradation are tight in sea sand ore deposit blast furnace process
The restriction measure of weight.
Have in prior art and spray the report of solarization calcium chloride on finished ball nodulizing surface, but, the chlorine element meeting in calcium chloride
Discharged in the form of chlorine, corrosion thus can be caused to apparatus body and pipeline, reduce the life-span of equipment.
Accordingly, it is capable to no find a kind of suppression and reduce the method for efflorescence in reduction process in the pelletizing production stage, this is to sea
The use of placer resource and blast furnace process have realistic meaning.
The content of the invention
Main technical problem to be solved of the invention is to overcome reduction degradation in existing sea sand ore deposit blast furnace process serious
Problem, there is provided a kind of suppression and reduce sea sand pellet ore reduction efflorescence method, including：Sea sand ore deposit is levigate, obtain sea sand
Breeze；Sea sand breeze is well mixed with bentonite and obtains compound；Compound is made in pelletizer green pellets；By green-ball
Group's roasting, obtains pellet；It is characterized in that：When compound is made into green pellets in pelletizer, in green pellets growth process
Middle addition boric acid aqueous solution is used as pelletizing water.
Wherein, the concentration of the boric acid aqueous solution is 0.5wt%～2.0wt%.
Wherein, counted as 100% with sea sand breeze and bentonitic quality, the consumption 2wt%- of the boric acid aqueous solution for being added
4wt%.
The present invention is added water link using pellet production pelletizing operation, in advance mixes a certain proportion of boric acid and pelletizing with water
Close, in green-ball growth process, equably boric acid aqueous solution is added in green-ball, then complete whole pelletizing production process.Utilize
The characteristic of boric acid low melting point, reduces liquid phase forming temperature, increases ferrous acid calcium content in pellet, and fosfosiderite pelletizing can be greatly reduced
Reduction temperature, so as to improve fosfosiderite pelletizing reduction process in metallurgical performance, suppress serious efflorescence under hot conditions.Its suppression
The theoretical foundation of sea sand pellet ore reduction efflorescence is：Using the characteristic of boron low melting point, in pellet heating process, boron ion is entered
In entering granule glass phase, the mechanics and dynamic performance of glass phase is improved, the intensity of pellet can be increased；Meanwhile, in pelletizing
In ore deposit heating process, boron-containing compound increased the mobile phase in pellet, reduce pellet apparent porosity, thus reduce
The speed of low temperature efflorescence reaction, improves the metallurgical performance during pellet smelting reducing.
In an embodiment of the invention, in compound, sea sand breeze is 97- with bentonitic mass ratio
99:3-1。
In an embodiment of the invention, it is described it is levigate to be finely ground to sea sand breeze in granularity less than 0.074mm
Ratio is 60%～80%.
In an embodiment of the invention, the diameter of made green pellets is preferably 10～18mm.
In an embodiment of the invention, the temperature of the roasting is preferably 1150-1350 DEG C.
Present invention also offers a kind of dedicated system for realizing said method, including：
Sea sand ore deposit fine mill, the sea sand fine mill is provided with sea sand ore deposit charging aperture and sea sand breeze discharging opening；
Mixing device, the mixing device is provided with charging aperture and mixed material discharging opening；
Sea sand ore deposit palletizing device, the mixing device is provided with mixed material charging aperture and sea sand ore deposit green pellets discharging opening；
Calciner, the calciner is provided with sea sand ore deposit pellet discharging after sea sand ore deposit green pellets charging aperture and roasting
Mouthful；
Wherein, the sea sand breeze discharging opening of the sea sand ore deposit fine mill is connected with the charging aperture of the mixing device, institute
The mixed material discharging opening for stating mixing device is connected with the mixed material charging aperture of the sea sand ore deposit palletizing device, the sea sand ore deposit
The sea sand ore deposit green pellets discharging opening of palletizing device is connected with the sea sand ore deposit green pellets charging aperture of the calciner.
Described sea sand ore deposit palletizing device can be pelletizer, for example, it may be disc balling machine, can also be that cylinder is made
Ball machine.
The calciner can be grate kiln, belt type roasting machine or shaft furnace.
The present invention has the advantages that relative to prior art：
The present invention efficiently solves the problems, such as that reduction degradation is serious in sea sand ore deposit blast furnace process, can be greatly lowered energy consumption,
Improve the working of a furnace, increase economic efficiency.
Description of the drawings
A kind of dedicated system schematic diagram of suppression and the reduction sea sand pellet ore reduction efflorescence of Fig. 1 present invention.
Specific embodiment
Come further to suppress and reduce sea sand pellet ore reduction efflorescence to a kind of of the present invention with reference to specific embodiment
Method and system illustrate, advantages of the present invention and feature will be with description and apparent.It should be understood that described
Embodiment is only exemplary, does not constitute any restriction to the scope of the present invention.It will be understood by those skilled in the art that
It is lower without departing from the spirit and scope of the present invention the details of technical solution of the present invention and form to be modified or replaced, but this
A little modifications or replacement each fall within protection scope of the present invention.
With reference to Fig. 1, the invention provides a kind of realize the suppression and reduce the special of sea sand pellet ore reduction pulverization methods
With system, including：
Sea sand ore deposit fine mill 100, the sea sand ore deposit fine mill 100 is provided with sea sand ore deposit charging aperture and the discharging of sea sand breeze
Mouthful；
Mixing device 200, the mixing device 200 is provided with charging aperture and mixed material discharging opening；
Copper ashes palletizing device 300, the mixing device 300 is provided with mixed material charging aperture and the discharging of sea sand ore deposit green pellets
Mouthful；
And calciner 400, the calciner 400 is provided with sea sand pelletizing after sea sand ore deposit green pellets charging aperture and roasting
Ore deposit discharging opening；
Wherein, the charging aperture phase of the sea sand breeze discharging opening of the sea sand ore deposit fine mill 100 and the mixing device 200
Even, the mixed material charging aperture phase of the mixed material discharging opening of the mixing device 200 and the sea sand ore deposit palletizing device 300
Even, the sea sand ore deposit green pellets discharging opening of the sea sand ore deposit palletizing device 300 enters with the sea sand ore deposit green pellets of the calciner 400
Material mouth is connected
Described sea sand ore deposit palletizing device 300 can be pelletizer.
The calciner 400 can be grate kiln, belt type roasting machine or shaft furnace.
The suppression of invention and reduction sea sand pellet ore reduction pulverization methods are carried out specifically below in conjunction with specific embodiment
Explanation：
The assay method of pellet ore reduction pulverization rate
By national standard《Using the method for cold rotary drum after the static reduction of iron ore low temperature efflorescence experiment》GB/T13242-
1991 are carried out.Determined sample is put in reaction tube, reaction tube is inserted in heating furnace and is heated up, be passed through during to 200 DEG C
N2Protected.When temperature be raised to 500 DEG C and stably when, be passed through by CO, CO2、N2The reducing gas of composition carries out static reduction.
Three kinds of gas consists of CO20%, CO in reducing gas220%th, N260%, three kinds of reducing gas total flows are 0.9m3/ h, also
The former time is 1h, then changes logical N2Protection, reduction tube is taken out from stove and is cooled to normal temperature.Sample is poured out from reduction tube,
It is put in little drum unit and turns 300 turns, the time is 10min, is then sieved with 6.3mm, 3.15mm, 0.5mm square hole screen, screening
Obtain afterwards more than 6.3mm, 3.15mm and the material less than 0.5mm, after reduction before inventory and rotary drum the ratio of sample total amount hundred
Fraction is pellet ore reduction pulverization rate.
Embodiment 1
By sea sand ore deposit in fine mill in the levigate breeze to sea sand ratio of the granularity less than 0.074mm 60%～
80%, obtain sea sand breeze；Sea sand breeze is well mixed with bentonite adhesive in mixing device and obtains compound, sea sand
Breeze is 97 with bentonitic mass ratio:3；Compound made in pelletizer green pellets, green pellets a diameter of 10～
18mm；By green pellets roasting in calciner (grate kiln), the temperature of roasting is 1150 DEG C, obtains sea sand pelletizing
Ore deposit；Wherein, when compound being made into green pellets in pelletizer, spray concentration is 0.5% boric acid in green pellets growth process
The aqueous solution；Counted as 100% with sea sand breeze and bentonitic quality, the consumption of 0.5% boric acid aqueous solution for being added is
2wt%；The addition place of boric acid is the filling up area of pelletizer, and first boric acid is added in green-ball adds water plus water tank, is adding water
Boric acid aqueous solution is formed in case, with balling process, boric acid aqueous solution is sprayed in green-ball.
The pellet obtained with the method, according to national standard reduction and pulverization ratio index is determined.Measurement result shows：With with
Water is compared for sea sand pellet pelletizing with water, in the present embodiment, sprays pelletizing water of the boric acid aqueous solution for sea sand pellet,
Its testing result shows：4.1% is improved more than 6.3mm sea sand pellet ore reductions pulverization rate；Carry more than 3.15mm sea sand pellets
High reduction and pulverization ratio 5.6%；2.7% is reduced less than 0.5mm sea sand pellet ore reductions pulverization rate.
Embodiment 2
By sea sand ore deposit in fine mill in the levigate ore deposit breeze to sea sand ratio of the granularity less than 0.074mm 60%～
80%, obtain sea sand breeze；Sea sand breeze is well mixed with bentonite adhesive in mixing device and obtains compound, sea sand
Breeze is 99 with bentonitic mass ratio:1；Compound made in pelletizer green pellets, green pellets a diameter of 10～
18mm；By green pellets roasting in calciner (grate kiln), the temperature of roasting is 1350 DEG C, obtains extra large placer pellets
Ore deposit；Wherein, when compound being made into green pellets in pelletizer, spray concentration is 1.0% boron in green pellets growth process
Aqueous acid；Counted as 100% with sea sand breeze and bentonitic quality, the consumption of 1.0% boric acid aqueous solution for being added is
3wt%；The addition place of boric acid is the filling up area of pelletizer, and first boric acid is added in green-ball adds water plus water tank, is adding water
Boric acid aqueous solution is formed in case, with balling process, boric acid aqueous solution is sprayed in green-ball.
The pellet obtained with the method, according to national standard reduction and pulverization ratio index is determined.Measurement result shows：With not
The situation of addition boric acid aqueous solution is compared, when adding boric acid aqueous solution in the present embodiment, testing result>6.3mm is improved part
8.5%；>3.15mm improves 10.2% in part；<0.5mm reduces 3.1% in part.
Embodiment 3
By sea sand ore deposit in fine mill in the levigate breeze to sea sand ratio of the granularity less than 0.074mm 60%～
80%, obtain sea sand breeze；Sea sand breeze is well mixed with bentonite adhesive in mixing device and obtains compound, sea sand
Breeze is 98 with bentonitic mass ratio:2；Compound made in pelletizer green pellets, green pellets a diameter of 10～
18mm；By green pellets roasting in calciner (grate kiln), the temperature of roasting is 1250 DEG C, obtains extra large placer pellets
Ore deposit；Wherein, when compound being made into green pellets in pelletizer, spray concentration is 2.0% boric acid in green pellets growth process
The aqueous solution；Counted as 100% with sea sand breeze and bentonitic quality, the consumption of 2.0% boric acid aqueous solution for being added is
4wt%；The addition place of boric acid is the filling up area of pelletizer, and first boric acid is added in green-ball adds water plus water tank, is adding water
Boric acid aqueous solution is formed in case, with balling process, boric acid aqueous solution is sprayed in green-ball.
The pellet obtained with the method, according to national standard reduction and pulverization ratio index is determined.Measurement result shows：With with
Water is compared for sea sand pellet pelletizing with water, in the present embodiment, sprays pelletizing water of the boric acid aqueous solution for sea sand pellet,
Its testing result shows：16.5% is improved more than 6.3mm sea sand pellet ore reductions pulverization rate；Carry more than 3.15mm sea sand pellets
High reduction and pulverization ratio 18.9%；4.2% is reduced less than 0.5mm sea sand pellet ore reductions pulverization rate.
Comparative example
By sea sand ore deposit in fine mill in the levigate breeze to sea sand ratio of the granularity less than 0.074mm 60%～
80%, obtain sea sand breeze；Sea sand breeze is well mixed with bentonite adhesive in mixing device and obtains compound；Will be mixed
Close material and green pellets, a diameter of 10～18mm of green pellets are made in pelletizer；By green pellets, in calciner, (drying grate is turned round
Kiln) in roasting, the temperature of roasting is 1250 DEG C, obtains sea sand ore deposit pellet；Wherein, compound is made in pelletizer green-ball
During group, addition concentration is 3.0% calcium chloride water as pelletizing water in green pellets growth process；With sea sand breeze and swollen
The quality of profit soil is 100% meter, and the consumption of 3.0% calcium chloride water for being added is 4wt%；The addition place of calcium chloride is
The filling up area of pelletizer, is first added to calcium chloride in green-ball adds water plus water tank, and in water tank is added calcium chloride water is formed,
With balling process, calcium chloride water is sprayed in green-ball.
The pellet obtained with the method, according to national standard reduction and pulverization ratio index is determined.Measurement result shows：With with
Water is compared for sea sand pellet pelletizing with water, in the present embodiment, with calcium chloride water as the pelletizing water of sea sand pellet,
Its testing result shows：3.9% is improved more than 3.15mm sea sand pellet ore reductions pulverization rate.
Claims (8)
1. it is a kind of suppression and reduce sea sand pellet ore reduction efflorescence method, including：Sea sand ore deposit is levigate, obtain sea sand breeze；
Sea sand breeze is well mixed with bentonite and obtains compound；Compound is made in pelletizer green pellets；Green pellets is roasted
Burn, obtain pellet；It is characterized in that：When compound is made into green pellets in pelletizer, add in green pellets growth process
Enter boric acid aqueous solution as pelletizing water；Wherein, the concentration of the boric acid aqueous solution is 0.5wt%～2.0wt%.
2. according to the method described in claim 1 or 2, it is characterised in that：With sea sand breeze and bentonitic quality as 100%
Meter, the consumption of the boric acid aqueous solution for being added is 2wt%-4wt%.
3. in accordance with the method for claim 1, it is characterised in that：In compound, sea sand breeze and bentonitic mass ratio
Example is 97-99:3-1.
4. in accordance with the method for claim 1, it is characterised in that：It is described it is levigate to be finely ground to sea sand breeze in granularity be less than
The ratio of 0.074mm is 60%～80%.
5. in accordance with the method for claim 1, it is characterised in that：A diameter of 10～18mm of made green pellets.
6. in accordance with the method for claim 1, it is characterised in that：The temperature of the roasting is 1150-1350 DEG C.
7. a kind of dedicated system for realizing claim 1-6 any one methods described, it is characterised in that include：
Sea sand ore deposit fine mill (100), the sea sand ore deposit fine mill (100) is provided with sea sand ore deposit charging aperture and the discharging of sea sand breeze
Mouthful；
Mixing device (200), the mixing device (200) is provided with charging aperture and mixed material discharging opening；
Copper ashes palletizing device (300), the mixing device (300) is provided with mixed material charging aperture and the discharging of sea sand ore deposit green pellets
Mouthful；
And calciner (400), the calciner (400) is provided with sea sand pelletizing after sea sand ore deposit green pellets charging aperture and roasting
Ore deposit discharging opening；
Wherein, the charging aperture phase of the sea sand breeze discharging opening of the sea sand ore deposit fine mill (100) and the mixing device (200)
Even, the mixed material charging aperture of the mixed material discharging opening of the mixing device (200) and the sea sand ore deposit palletizing device (300)
It is connected, the sea sand ore deposit green pellets discharging opening of the sea sand ore deposit palletizing device (300) is given birth to the sea sand ore deposit of the calciner (400)
Pelletizing charging aperture is connected.
8. according to the system described in claim 7, it is characterised in that described sea sand ore deposit palletizing device (300) is pelletizer；Institute
It is grate kiln, belt type roasting machine or shaft furnace to state calciner (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611013850.0A CN106591567A (en) | 2016-11-15 | 2016-11-15 | Method for restraining and reducing reduction degradation of iron sand pellets and system special for method for restraining and reducing reduction degradation of iron sand pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611013850.0A CN106591567A (en) | 2016-11-15 | 2016-11-15 | Method for restraining and reducing reduction degradation of iron sand pellets and system special for method for restraining and reducing reduction degradation of iron sand pellets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106591567A true CN106591567A (en) | 2017-04-26 |
Family
ID=58591510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611013850.0A Pending CN106591567A (en) | 2016-11-15 | 2016-11-15 | Method for restraining and reducing reduction degradation of iron sand pellets and system special for method for restraining and reducing reduction degradation of iron sand pellets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106591567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512074A (en) * | 2019-09-29 | 2019-11-29 | 东北大学 | A kind of method that high mixture ratio New Zealand sea sand raw ore prepares acid pellet |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138020A (en) * | 1983-12-26 | 1985-07-22 | Nippon Steel Corp | Production of raw material to be sintered |
| US5009707A (en) * | 1989-02-13 | 1991-04-23 | Nkk Corporation | Method for manufacturing agglomerates of sintered pellets |
| CN1114689A (en) * | 1994-07-06 | 1996-01-10 | 杨润泉 | Sintering process for making cherry small ball by adding water soluble additives in iron concentrate |
| CN101508885A (en) * | 2009-03-13 | 2009-08-19 | 重庆大学 | Refuse incineration flying ash metallurgy sintering treatment fixing agent |
| CN101654737A (en) * | 2008-12-19 | 2010-02-24 | 河南德海源诚矿业有限公司 | Compound iron ore pellet of molybdenum tailings and sulfate slags and preparation method thereof |
| CN105907957A (en) * | 2016-04-29 | 2016-08-31 | 昆明理工大学 | Method for preparing reduced ilmenite for welding electrodes by reducing marine placer through microwaves of rotary hearth furnace |
-
2016
- 2016-11-15 CN CN201611013850.0A patent/CN106591567A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60138020A (en) * | 1983-12-26 | 1985-07-22 | Nippon Steel Corp | Production of raw material to be sintered |
| US5009707A (en) * | 1989-02-13 | 1991-04-23 | Nkk Corporation | Method for manufacturing agglomerates of sintered pellets |
| CN1114689A (en) * | 1994-07-06 | 1996-01-10 | 杨润泉 | Sintering process for making cherry small ball by adding water soluble additives in iron concentrate |
| CN101654737A (en) * | 2008-12-19 | 2010-02-24 | 河南德海源诚矿业有限公司 | Compound iron ore pellet of molybdenum tailings and sulfate slags and preparation method thereof |
| CN101508885A (en) * | 2009-03-13 | 2009-08-19 | 重庆大学 | Refuse incineration flying ash metallurgy sintering treatment fixing agent |
| CN105907957A (en) * | 2016-04-29 | 2016-08-31 | 昆明理工大学 | Method for preparing reduced ilmenite for welding electrodes by reducing marine placer through microwaves of rotary hearth furnace |
Non-Patent Citations (3)
| Title |
|---|
| 储满: "《钢铁冶金原燃料及辅助材料》", 31 January 2010, 北京：冶金工业出版社 * |
| 孙传尧主编: "《选矿工程师手册 第2册 上 选矿通论》", 31 March 2015, 北京：冶金工业出版社 * |
| 杉木(译): "《球团工艺及设备》", 31 October 1981, 北京：冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512074A (en) * | 2019-09-29 | 2019-11-29 | 东北大学 | A kind of method that high mixture ratio New Zealand sea sand raw ore prepares acid pellet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103114201B (en) | Agglomeration method for iron containing dust slime of iron and steel plants | |
| CN105219956B (en) | A kind of preparation method of iron powder coal-pressing ball compound binding agent | |
| CN103451346B (en) | Copper smelting slag reduction method | |
| CN101906533B (en) | Low-silicon magnesium-containing pellets and production method thereof | |
| CN105063348A (en) | Fluxed MgO pellet ore production method | |
| CN104862440A (en) | Low-grade iron ore direct reduction method | |
| CN109266848A (en) | Prepare the binder of oxidation of chromite pelletizing | |
| CN104357657A (en) | Method for preparing oxidized pellets from converter dedusting ash | |
| CN104531983B (en) | Method used for preparing pellet ore from fluorine-containing mixed iron concentrate | |
| CN101654737B (en) | Compound iron ore pellet of molybdenum tailings and sulfate slags and preparation method thereof | |
| CN103614548B (en) | Method for producing sinter from hematite concentrate powder | |
| CN102268502B (en) | Spongy iron preparation method by smelting refractory iron ore (slag) with reduction rotary kiln | |
| CN108149008A (en) | To discard lump ore as the method for lateritic nickel ore hearth layer for sintering | |
| CN101956064A (en) | Method for improving cracking temperature of ultrafine-granularity iron ore concentrate powder pellet ore | |
| CN106702147A (en) | Method and system for reducing reduction degradation of vanadium-titanium magnet pellets | |
| CN103421922B (en) | Method for producing ferronickel by processing laterite nickel ore in Sulawesi, Indonesia through RKEF technology | |
| CN102851491A (en) | Red mud composite binder for oxidized pellets | |
| CN104263916A (en) | Adhesive for pellet and preparation method of pellet | |
| CN206256124U (en) | A kind of system for reducing v-ti magnetite pellet ore reduction efflorescence | |
| CN106591567A (en) | Method for restraining and reducing reduction degradation of iron sand pellets and system special for method for restraining and reducing reduction degradation of iron sand pellets | |
| CN100529003C (en) | Binder adapted for production of cooled agglomerated pellet by using iron-bearing material | |
| CN107267750B (en) | A kind of method of granulating of high-chromic vanadium-titanium ferroferrite sinter mixture | |
| CN103993117B (en) | A kind of method based on preparing manganeisen from low grade manganese mine | |
| CN113564352B (en) | Method for producing high-quality sintering ore by using multiple manganese ore powder ore blending | |
| CN104745797A (en) | Material distributing method for sintering of chromite fine powder pellets |
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 |
Application publication date: 20170426 |
|
| RJ01 | Rejection of invention patent application after publication |