CN117363886A - Production method of high-titanium pellet - Google Patents
Production method of high-titanium pellet Download PDFInfo
- Publication number
- CN117363886A CN117363886A CN202311316390.9A CN202311316390A CN117363886A CN 117363886 A CN117363886 A CN 117363886A CN 202311316390 A CN202311316390 A CN 202311316390A CN 117363886 A CN117363886 A CN 117363886A
- Authority
- CN
- China
- Prior art keywords
- titanium
- pellets
- balling
- roasting
- green
- 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
- 239000008188 pellet Substances 0.000 title claims abstract description 54
- 239000010936 titanium Substances 0.000 title claims abstract description 45
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 238000012216 screening Methods 0.000 claims abstract description 11
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 10
- 239000000440 bentonite Substances 0.000 claims abstract description 8
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005453 pelletization Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
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
- C22B1/2406—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
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (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 production method of high titanium pellets, which comprises the following specific steps: mixing titanium-containing mixed material with titanium dioxide content of 10% with bentonite as a mixing material, conveying the mixing material into a balling disc in a balling bin through a belt after uniformly mixing the mixing material by using a mixer, adding the mixing material and water to a disc balling machine for balling to obtain green pellets, and screening, drying, preheating, roasting and cooling the green pellets to obtain the high-efficiency furnace-protecting titanium pellets. The high-efficiency furnace-protecting titanium pellets produced by the method have the advantages of 50-56% of total iron content, 8-12% of titanium dioxide content, strength of more than 2000N/P, high grade, good metallurgical property, multiple varieties, changeable titanium content and the like, can play a role in high-efficiency furnace protection, avoid the influence of high impurities of the cold-bonded pellets and the stable production and index of the blast furnace caused by feeding the lump ore raw materials into the furnace, and also avoid the influence of adding the titanium-containing materials into the sinter ore to the production yield index.
Description
The application is a divisional application of an invention patent with the application date of 2019, 04 month and 19, the application number of 201910319631.2 and the invention name of a production method of high titanium pellets.
Technical Field
The invention relates to the technical field of pellet production for blast furnace ironmaking, in particular to a production method of high-titanium pellets.
Background
The blast furnace ironmaking not only requires high quality, high yield, low consumption and environmental protection, but also requires long service life of the blast furnace, the titanium slag furnace protection is an important measure for long service life of the blast furnace, along with the development of blast furnace ironmaking technology, the effect of the concentrate is highly valued by metallurgical workers, and the pellets are used as high-quality blast furnace burden, so that the blast furnace ironmaking furnace has the advantages of high grade, good strength, easy reduction, uniform granularity and the like, and the acid pellets are matched with high-alkalinity sinter, so that a reasonable burden structure of the blast furnace can be formed, and the blast furnace ironmaking achieves the purposes of increasing yield, saving coke and improving economic benefit.
At present, three types of resources are used for protecting the blast furnace: the first type is cold-bonded large-granularity pellets, and the utilization rate is low because the cold-bonded large-granularity pellets have high impurity content and low active ingredients and influence the production index of the blast furnace after being used; the second type is titanium ore, which is less in resource and raw material, so that the production of the blast furnace is affected and is less adopted; the third category is titanium-containing sinter, which is added to sinter to affect the production yield index.
Disclosure of Invention
The invention aims to provide a production method of high-titanium pellets with good metallurgical performance, multiple varieties and changeable titanium content, and the obtained high-titanium pellets can play a role in high-efficiency furnace protection, do not influence the production index of a blast furnace, and simultaneously avoid the influence on the production yield index caused by adding titanium-containing materials into sintered ores.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the production process of high titanium pellet includes the following steps:
(1) Taking 100 parts by weight of a titanium-containing mixed material with titanium dioxide content of 10%, and adding 2 parts by weight of bentonite to obtain a mixed material, wherein the titanium-containing mixed material comprises 90% of low-grade vanadium-titanium powder and 10% of medium-grade titanium powder in percentage by mass;
(2) Conveying the mixed materials to a balling disc in a balling bin through a belt after uniformly mixing the mixed materials by using a mixer, adding the mixed materials and water into a disc balling machine, and balling to obtain green pellets, wherein the diameter of each green pellet is 1-20mm;
(3) The green pellets are subjected to screening, drying, preheating, roasting and cooling processes to obtain high-efficiency furnace-protecting titanium pellets;
the screening process comprises the following steps: the big ball roller screen screens the green balls with the grain size of more than 16mm away for re-pelletizing; the small ball roller screen screens out the green balls with the grain size smaller than 8mm for re-pelletizing; obtaining qualified green pellets with the grain size of 8-16mm, and then entering a chain grate for drying;
the drying process includes: gradually increasing the temperature from 200 ℃ to 400 ℃, wherein the temperature increasing rate is 25 ℃/min, and the total drying time is 8min;
the preheating process comprises the following steps: the temperature is preheated for 60s at 500 ℃, for 60s at 600 ℃, for 60s at 700 ℃, for 60s at 800 ℃, for 60s at 900 ℃, for 120s at 1000 ℃, for 240s at 1030 ℃; the highest point temperature of the bellows is 480 ℃;
the roasting process comprises the following steps: roasting for 4min at 1100 ℃, 6min at 1200 ℃, 20min at 1250-1300 ℃, 5min at 1100-1150 ℃ and 35min total roasting time;
the cooling process includes: gradually cooling with three blowers on a circular cooler at 950-1100deg.C for 15min, 700-800deg.C for 10min, 350-450deg.C for 15min, and naturally cooling below 150deg.C for 15min.
Compared with the prior art, the invention has the beneficial effects that:
the high-efficiency furnace-protecting titanium pellets produced by the method have the advantages of 50-56% of total iron content, 8-12% of titanium dioxide content, strength of more than 2000N/P, high grade, good metallurgical property, multiple varieties, changeable titanium content and the like, can play a role in high-efficiency furnace protection, avoid the influence of high impurities of the cold-bonded pellets and the stable production and index of the blast furnace caused by feeding the lump ore raw materials into the furnace, and also avoid the influence of adding the titanium-containing materials into the sinter ore to the production yield index.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Example 1
The production process of high titanium pellet includes the following steps:
(1) Adding 100 parts by weight of a titanium-containing mixed material with the titanium dioxide content of 8%, wherein the titanium-containing mixed material adopts low-grade vanadium-titanium powder, and then adding 1.8 parts by weight of bentonite as a mixed material;
(2) Conveying the mixed materials into a balling disc in a balling bin through a belt after uniformly mixing the mixed materials by using a mixer, adding the mixed materials and water into a disc balling machine, and balling to obtain green pellets, wherein the diameter of the green pellets is 1-20mm;
(3) The green pellets are subjected to screening, drying, preheating, roasting and cooling processes to obtain high-efficiency furnace-protecting titanium pellets;
the screening process comprises the following steps: the big ball roller screen screens the green balls with the grain size of more than 16mm away for re-pelletizing; the small ball roller screen screens out the green balls with the grain size smaller than 8mm for re-pelletizing; obtaining qualified green pellets with the grain size of 8-16mm, and then entering a chain grate for drying; the drying process includes: gradually increasing the temperature from 200 ℃ to 400 ℃, wherein the temperature increasing rate is 24 ℃/min, and the total drying time is 7.7min; the preheating process comprises the following steps: preheating at 500 ℃ for 55s, preheating at 600 ℃ for 55s, preheating at 700 ℃ for 55s, preheating at 800 ℃ for 55s, preheating at 900 ℃ for 55s, preheating at 1000 ℃ for 110s, and preheating at 1030 ℃ for 230s; the highest point temperature of the bellows reaches 450 ℃; the roasting process comprises the following steps: roasting for 3.5min at 1100 ℃, roasting for 5.5min at 1200 ℃, roasting for 18min at 1250-1300 ℃, roasting for 4.5min at 1100-1150 ℃ and total roasting time of 31.5.5min; the cooling process includes: cooling with three blowers on a circular cooler gradually, cooling at 950-1100deg.C for 14min, cooling at 700-800deg.C for 9min, cooling to 350-450deg.C for 14min, cooling to below 150deg.C, and naturally cooling for 14min.
Example 2
The production process of high titanium pellet includes the following steps:
(1) Mixing 100 parts by weight of a titanium-containing mixed material with the titanium dioxide content of 10%, wherein the titanium-containing mixed material adopts 90% of low-grade vanadium-titanium powder and 10% of medium-grade titanium powder as the materials, and then adding 2 parts by weight of bentonite as the materials;
(2) Conveying the mixed materials into a balling disc in a balling bin through a belt after uniformly mixing the mixed materials by using a mixer, adding the mixed materials and water into a disc balling machine, and balling to obtain green pellets, wherein the diameter of the green pellets is 1-20mm;
(3) The green pellets are subjected to screening, drying, preheating, roasting and cooling processes to obtain high-efficiency furnace-protecting titanium pellets; the screening process comprises the following steps: the big ball roller screen screens the green balls with the grain size of more than 16mm away for re-pelletizing; the small ball roller screen screens out the green balls with the grain size smaller than 8mm for re-pelletizing; obtaining qualified green pellets with the grain size of 8-16mm, and then entering a chain grate for drying; the drying process includes: gradually increasing the temperature from 200 ℃ to 400 ℃, wherein the temperature increasing rate is 25 ℃/min, and the total drying time is 8min; the preheating process comprises the following steps: the temperature is preheated for 60s at 500 ℃, for 60s at 600 ℃, for 60s at 700 ℃, for 60s at 800 ℃, for 60s at 900 ℃, for 120s at 1000 ℃, for 240s at 1030 ℃; the highest point temperature of the bellows reaches 480 ℃; the roasting process comprises the following steps: roasting for 4min at 1100 ℃, 6min at 1200 ℃, 20min at 1250-1300 ℃, 5min at 1100-1150 ℃ and 35min total roasting time; the cooling process includes: gradually cooling with three blowers on a circular cooler at 950-1100deg.C for 15min, 700-800deg.C for 10min, 350-450deg.C for 15min, and naturally cooling below 150deg.C for 15min.
Example 3
The production process of high titanium pellet includes the following steps:
(1) Mixing 100 parts by weight of a titanium-containing mixed material with titanium dioxide content of 12%, wherein the titanium-containing mixed material adopts 80% of low-grade vanadium-titanium powder, 5% of titanium powder and 15% of medium titanium powder by weight, and then adding 2.2 parts by weight of bentonite as a mixed material;
(2) Conveying the mixed materials into a balling disc in a balling bin through a belt after uniformly mixing the mixed materials by using a mixer, adding the mixed materials and water into a disc balling machine, and balling to obtain green pellets, wherein the diameter of the green pellets is 1-20mm;
(3) The green pellets are subjected to screening, drying, preheating, roasting and cooling processes to obtain high-efficiency furnace-protecting titanium pellets; the screening process comprises the following steps: the big ball roller screen screens the green balls with the grain size of more than 16mm away for re-pelletizing; the small ball roller screen screens out the green balls with the grain size smaller than 8mm for re-pelletizing; obtaining qualified green pellets with the grain size of 8-16mm, and then entering a chain grate for drying; the drying process includes: the temperature is gradually increased from 200 ℃ to 400 ℃, the heating rate is 26 ℃/min, and the total drying time is 8.3min; the preheating process comprises the following steps: the temperature is 65s preheated at 500 ℃, 65s preheated at 600 ℃, 65s preheated at 700 ℃, 65s preheated at 800 ℃, 65s preheated at 900 ℃, 130s preheated at 1000 ℃, 250s preheated at 1030 ℃; the highest point temperature of the bellows reaches 500 ℃; the roasting process comprises the following steps: roasting for 4.5min at 1100 ℃, roasting for 6.5min at 1200 ℃, roasting for 22min at 1250-1300 ℃, roasting for 5.5min at 1100-1150 ℃ and total roasting time of 338.5min; the cooling process includes: cooling with three blowers on a circular cooler gradually at 950-1100deg.C for 16min, 700-800deg.C for 11min, 350-450deg.C for 16min, and naturally cooling below 150deg.C for 16min.
The mass percentage content of the low-grade vanadium-titanium powder with the granularity of 0.074mm in the low-grade vanadium-titanium powder reaches more than 80 percent; the titanium powder with the granularity of 0.074mm in the titanium powder has the mass percentage content of more than 70 percent; the mass percentage content of the medium titanium powder with the granularity of 0.074mm in the medium titanium powder reaches more than 60 percent; the mass percentage of sulfur element in the mixed material is below 0.3 percent.
The chemical compositions of the low-grade vanadium-titanium powder, the medium-grade titanium powder and the bentonite are shown in table 1;
table 1: chemical composition of the raw materials in the present application
| Mineral seeds | Total iron TFe content% | Titanium dioxide content% | Silica content% |
| Low-grade vanadium-titanium powder | 58.5 | 8.8 | 4.4 |
| Titanium powder | 33 | 35 | 8.9 |
| Medium titanium powder | 28 | 29 | 17 |
| Bentonite clay | - | - | 65 |
The chemical compositions and the compressive strength of the high titanium pellets prepared in the above examples 1 to 3 are shown in Table 2;
table 2 each ore blending scheme of high titanium pellet and chemical composition and compressive strength thereof
The high-efficiency furnace-protecting titanium pellets produced by the method have the advantages of 50-56% of total iron content, 8-12% of titanium dioxide content, strength of more than 2000N/P, high grade, good metallurgical property, multiple varieties, changeable titanium content and the like, can play a role in high-efficiency furnace protection, avoid the influence of high impurities of the cold-bonded pellets and the stable production and index of the lump ore raw materials to the blast furnace caused by feeding the cold-bonded pellets into the furnace, and also avoid the influence of the sintering of the titanium-containing materials into the sinter ore on the production yield index of the ore.
While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of one of ordinary skill in the art.
Claims (1)
1. The production method of the high titanium pellet is characterized by comprising the following specific steps:
(1) Taking 100 parts by weight of a titanium-containing mixed material with titanium dioxide content of 10%, and adding 2 parts by weight of bentonite to obtain a mixed material, wherein the titanium-containing mixed material comprises 90% of low-grade vanadium-titanium powder and 10% of medium-grade titanium powder in percentage by mass;
(2) Conveying the mixed materials to a balling disc in a balling bin through a belt after uniformly mixing the mixed materials by using a mixer, adding the mixed materials and water into a disc balling machine, and balling to obtain green pellets, wherein the diameter of each green pellet is 1-20mm;
(3) The green pellets are subjected to screening, drying, preheating, roasting and cooling processes to obtain high-efficiency furnace-protecting titanium pellets;
the screening process comprises the following steps: the big ball roller screen screens the green balls with the grain size of more than 16mm away for re-pelletizing; the small ball roller screen screens out the green balls with the grain size smaller than 8mm for re-pelletizing; obtaining qualified green pellets with the grain size of 8-16mm, and then entering a chain grate for drying;
the drying process includes: gradually increasing the temperature from 200 ℃ to 400 ℃, wherein the temperature increasing rate is 25 ℃/min, and the total drying time is 8min;
the preheating process comprises the following steps: the temperature is preheated for 60s at 500 ℃, for 60s at 600 ℃, for 60s at 700 ℃, for 60s at 800 ℃, for 60s at 900 ℃, for 120s at 1000 ℃, for 240s at 1030 ℃; the highest point temperature of the bellows is 480 ℃;
the roasting process comprises the following steps: roasting for 4min at 1100 ℃, 6min at 1200 ℃, 20min at 1250-1300 ℃, 5min at 1100-1150 ℃ and 35min total roasting time;
the cooling process includes: gradually cooling with three blowers on a circular cooler at 950-1100deg.C for 15min, 700-800deg.C for 10min, 350-450deg.C for 15min, and naturally cooling below 150deg.C for 15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311316390.9A CN117363886A (en) | 2019-04-19 | 2019-04-19 | Production method of high-titanium pellet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311316390.9A CN117363886A (en) | 2019-04-19 | 2019-04-19 | Production method of high-titanium pellet |
| CN201910319631.2A CN110055406A (en) | 2019-04-19 | 2019-04-19 | A kind of production method of high titanium pellet |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910319631.2A Division CN110055406A (en) | 2019-04-19 | 2019-04-19 | A kind of production method of high titanium pellet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117363886A true CN117363886A (en) | 2024-01-09 |
Family
ID=67319766
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910319631.2A Pending CN110055406A (en) | 2019-04-19 | 2019-04-19 | A kind of production method of high titanium pellet |
| CN202311316390.9A Pending CN117363886A (en) | 2019-04-19 | 2019-04-19 | Production method of high-titanium pellet |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910319631.2A Pending CN110055406A (en) | 2019-04-19 | 2019-04-19 | A kind of production method of high titanium pellet |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN110055406A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410960B (en) * | 2021-12-17 | 2023-12-12 | 萍乡市众邦冶金有限公司 | Pellet production process for steel smelting |
| CN114472176B (en) * | 2022-01-04 | 2023-01-03 | 承德信通首承科技有限责任公司 | Production method and device of high-vanadium pellet ore |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2025832B (en) * | 1978-07-20 | 1982-06-16 | Zaporozh Titano Magnievy Kom | Apparatus for pelletizing titanium-bearing particulate material |
| JPS6280230A (en) * | 1985-10-01 | 1987-04-13 | Kobe Steel Ltd | Unfired high-titanium pellet |
| CN102220486A (en) * | 2011-06-22 | 2011-10-19 | 攀钢集团有限公司 | Acidic full-vanadium-titanium pellets and preparation method thereof |
| CN102417977B (en) * | 2011-12-08 | 2013-09-04 | 黑龙江建龙钢铁有限公司 | High chromium-high vanadium type vanadium titanium ore pellet |
| CN104862472A (en) * | 2015-05-12 | 2015-08-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium-titanium pellet and preparing method thereof |
| CN105714109B (en) * | 2016-04-12 | 2018-02-02 | 中南大学 | A kind of preparation method of the high titanium pelletizing of high intensity |
| CN107400774A (en) * | 2017-07-27 | 2017-11-28 | 山西太钢不锈钢股份有限公司 | A kind of method for improving blast furnace vanadium-titanium pellet intensity |
| CN108359792B (en) * | 2018-03-19 | 2020-07-14 | 攀枝花学院 | Acid oxidation pellet of titanium concentrate and vanadium iron concentrate bulk concentrate and preparation method thereof |
| CN109055734A (en) * | 2018-10-09 | 2018-12-21 | 鞍钢股份有限公司 | A kind of preparation method of blast furnace protecting composite briquette ore |
-
2019
- 2019-04-19 CN CN201910319631.2A patent/CN110055406A/en active Pending
- 2019-04-19 CN CN202311316390.9A patent/CN117363886A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN110055406A (en) | 2019-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110106351B (en) | Production method of high-magnesium pellet ore | |
| CN111809045B (en) | Cold pressing block for converter and preparation method thereof | |
| CN117363886A (en) | Production method of high-titanium pellet | |
| CN102409170A (en) | High-mechanical strength carbon-containing pellets for blast furnace and production method for high-mechanical strength carbon-containing pellets | |
| CN108998659B (en) | Process for processing pellet ore by using siderite powder and vanadium-titanium magnetite powder | |
| CN102912209A (en) | Process for producing bead ferronickel by rotary hearth furnace through coal-based reduction of red soil nickel oxide ores | |
| CN114350942A (en) | Method for preparing pellets by utilizing superfine high-iron and high-sodium iron concentrates | |
| CN109371232A (en) | For reducing the method for pellet expansion rate | |
| CN110205487B (en) | Production method of fluorine-containing vanadium-titanium pellet ore | |
| CN116179846B (en) | Pellet production method with high proportion of hematite | |
| CN113136486B (en) | Production method and formula of pellets added with low-nickel high-iron nickel ore | |
| CN113652545B (en) | Production method of large-stacking-angle fluxed pellets | |
| CN114350943A (en) | Method for producing acid pellets by using high-sulfur concentrate | |
| CN114292974A (en) | Method for reducing blast furnace fuel ratio under tamping coke smelting condition | |
| CN113774216A (en) | Preparation method of pellets using laterite-nickel ore as pellet binder | |
| CN113416839A (en) | Iron-containing low-silicon binder and preparation method thereof | |
| CN112195339A (en) | Contains K2O、Na2O, F pellet prepared by using magnetite concentrate as main material and combining with hematite concentrate and preparation method thereof | |
| CN115584390A (en) | Preparation method of low-grade oxidized pellet ore | |
| CN110669925B (en) | Alkaline bentonite for pellets | |
| CN108950186A (en) | A kind of processing method for the manufacturing process and iron ore concentrate improving iron ore pellets yield | |
| CN117701879A (en) | Experimental method for increasing proportion of finely ground hematite in pellets and further increasing compression strength of pellets | |
| CN115261611B (en) | Production method of magnesia pellet | |
| CN114908250A (en) | Binder for pellets, preparation method of binder and preparation method of pellets | |
| CN113736990B (en) | Method for obtaining limonite pellets under laboratory conditions | |
| CN112143885B (en) | Composite additive for iron ore pellets and iron ore 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 |