CN101638718A - High burst temperature carbonic pellet - Google Patents
High burst temperature carbonic pellet Download PDFInfo
- Publication number
- CN101638718A CN101638718A CN200810041088A CN200810041088A CN101638718A CN 101638718 A CN101638718 A CN 101638718A CN 200810041088 A CN200810041088 A CN 200810041088A CN 200810041088 A CN200810041088 A CN 200810041088A CN 101638718 A CN101638718 A CN 101638718A
- Authority
- CN
- China
- Prior art keywords
- pellet
- ball
- carbonic
- burst temperature
- percent
- 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 abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005453 pelletization Methods 0.000 claims abstract description 30
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 14
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 10
- 239000010883 coal ash Substances 0.000 claims description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 239000004021 humic acid Substances 0.000 claims description 15
- 159000000000 sodium salts Chemical class 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 12
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 12
- 239000000920 calcium hydroxide Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011230 binding agent Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 6
- 239000002912 waste gas Substances 0.000 abstract description 3
- 239000011734 sodium Substances 0.000 abstract description 2
- 230000002277 temperature effect Effects 0.000 abstract description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 239000007767 bonding agent Substances 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 22
- 238000007906 compression Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 230000001603 reducing effect Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000000582 semen Anatomy 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- -1 pendant benefit Polymers 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012256 powdered iron Substances 0.000 description 1
- 239000003265 pulping liquor Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a high burst temperature carbonic pellet. The dry basis of the pellet comprises the following components in percentage by mass: 0.5 to 1.0 percent of sodium humate, 1 to 3 percent of lime hydrate, 10 to 25 percent of carbonic raw material, and the balance of iron-containing oxide dust, wherein a wet pellet contains 9 to 11 percent of moisture. The particles of which the particle size is less than 10 mum in the carbonic raw material accounts for 90 percent or above. The high burst temperature carbonic pellet adopts a bonding agent which has low cost and wide source, does not reduce the grade of the metallized pellet after reduction, and can effectively improve the disc-pelletizing carbonic green pellet dynamic burst temperature; the parameters of the pelletizing moisture adaptive with the binding agent, the component particle size and the like are determined to ensure that the binding agent at least does not reduce the strength of a carbonic green pellet while improving the burst temperature effect of the pellet. Besides, by improving the burst temperature of the carbonic pellet in the prior art, the high temperature waste gas can be used directly to achievethe effects of environment protection and energy conservation.
Description
Technical field
The present invention relates to the used Steel Plant's oxides-containing iron of horizontal moving bed reducing process and join carbon-containing green-ball manufacture technology field, particularly a kind of carbonaceous pelletizing of high burst temperature.
Background technology
To make carbonaceous pelletizing behind powdered iron ore or the Steel Plant's dust adding carbonaceous material, after the drying, at high temperature through horizontal moving bed reducing process (as rotary hearth furnace process, straight-bottom furnace technology etc.), it directly is reduced into the iron-containing charge of certain degree of metalization and the metallic reducings such as zinc in pelletizing volatilizations is collected, respectively the former is used for the ironmaking or the steel-making of Steel Plant, the raw material that the latter is used for the production of zinc product is the important method of non-blast furnace ironmaking and Steel Plant's dust comprehensive utilization.In this method, the rate of drying that improves the carbonaceous pelletizing green-ball is the important step that increases whole process efficiency.
Improving the most effective means of carbonaceous pelletizing rate of drying is that it is heated under the high temperature dynamic air current, the dynamic air current temperature is high more, the pelletizing rate of drying is fast more, but heterogeneity (comprise and added different binding agents), different processing mode (as pressure ball or rolling balling), the green pellets of heterogeneity, the degree of its tolerance dynamic air current temperature has difference, shows:
Under identical water content, identical dynamic air current temperature and speed, the composition that has or the pelletizing of structure can crack or explosion, the quantity of the pelletizing of the composition that has or structure explosion is few, not even explosion, crack or the pelletizing of explosion frangible, not only can't further carry out normal high temperature reduction, also can worsen the high temperature reduction process of normal ball material, must be avoided or eliminate.
Prior art is weighed the difference degree of green pellets tolerance dynamic air current temperature with dynamic burst temperature or this measurement index of dynamic fracture temperature, measured dynamic burst temperature or dynamic fracture temperature are high more, the temperature that this kind pelletizing tolerance dynamic air current is described is high more, even drying can not produce explosion yet under higher dynamic air current temperature, therefore, can obtain high rate of drying and efficient.
In the prior art, the method that is used for the carbonaceous pelletizing making has pressure ball, disk spin and cylinder spin, the selection of balling-up method is relevant with follow-up green-ball reducing process or sinter process, The present invention be directed to match with horizontal moving bed reducing process the improvement done of carbonaceous pelletizing disk spin method.
In general, no matter adopt pressure ball, disk spin and cylinder spin to make ball, adding binding agent all may exert an influence to the burst temperature of carbonaceous pelletizing, the binding agent that can adopt in the prior art (CN200610018299.9 is disclosed as Chinese patent) has wilkinite, lime, cement, water glass, borate, clay, coal tar, petroleum slag, flyash, spent pulping liquor, syrup, marine plant, humic acids, various starch, water glass, pendant benefit, polyacrylamide etc.But retrieval shows, uses disk spin method and produce used then rarely seen wilkinite of binding agent and the Semen Maydis powder tackiness agent of carbonaceous pelletizing on horizontal moving bed reducing process, sees PCT/JP2001/009523.
The bentonitic typical chemical constitution of table 1 (wt/%):
| ????Tfe | ????SiO 2 | ????CaO | ????MgO | ????Al 2O 3 | ????Na 2O | ????K 2O | ????Ig |
| ????1.51 | ????63.21 | ????0.99 | ????2.90 | ????14.96 | ????1.79 | ????0.38 | ????13.62 |
By table 1 as seen, its main component is SiO
2, belong to acidic substance, make the shortcoming of using as binding agent in the ball at carbonaceous pelletizing unit dish and be: it is stayed in the reducting pellet as impurity, has increased the impurity level of reduction back metallized pellet, has reduced the grade of product, for following process has increased burden.The problem of Semen Maydis powder tackiness agent is that price is more expensive, has increased cost.Make ball and manufacture carbonaceous pelletizing though other tackiness agent can be used for unit dish in principle, how its add-on and adding method just can make it more competitive than prior art then is unknown.
In addition, moisture and heterogeneity granularity are also all influential to the burst temperature of carbonaceous pelletizing, as PCT/JP2001/009523 when making tackiness agent with wilkinite and Semen Maydis powder, selected suitable moisture is 8-13%, and the raw material particle size that comprises dust and carbon containing powder is required to be particle diameter powder 20-80% that 10 μ m are following.Because moisture and component particle size not only have considerable influence to burst temperature, ultimate compression strength and dropping strength to green-ball also has considerable influence simultaneously, and green ball strength all has a significant impact for the assurance that green-ball transports efficient and high temperature reduction reductibility, therefore, introducing new binding agent, when managing to improve burst temperature, preferably can keep and improve the ultimate compression strength and the dropping strength of green-ball, at least be the intensity that does not reduce green-ball, this just make with the supporting moisture of new binding agent and raw material granularity to the influence of burst temperature and ultimate compression strength also within consideration of the present invention.
The burst temperature of prior art carbonaceous pelletizing is only near 200 ℃, its value is on the low side, both do not satisfied the requirement of the drying efficiency of ball, simultaneously, because the equal superelevation of spent air temperture that can be used as oven dry can not directly use in 200 ℃, have to the waste gas processing of lowering the temperature, reduced process efficiency, improved the technology cost, therefore, the necessity that also changes.
Summary of the invention
The object of the present invention is to provide a kind of carbonaceous pelletizing of high burst temperature, the introducing cost is low, the source extensively, does not reduce reduction back metallized pellet grade and can effectively improve the binding agent that disk is made ball carbon containing green-ball dynamic fracture temperature; Determine to make ball moisture with new binding agent adapts, parameters such as component particle size are to guarantee that new binding agent when improving pelletizing burst temperature effect, does not reduce the intensity of carbon containing green-ball at least.In addition,, the waste gas of comparatively high temps can directly be used, realize environmental protection and energy-saving effect by improving carbonaceous pelletizing burst temperature in the prior art.
For achieving the above object, technical scheme of the present invention is,
A kind of carbonaceous pelletizing of high burst temperature, its butt composition quality per-cent is: Sodium salts humic acids 0.5～1.0%; Slaked lime 1～3%, carbon raw material 10-25%, all the other butt compositions are the dust of oxides-containing iron; Wet bulb group's water content is 9-11%.
Further, in the described carbon raw material granularity the particle below the 10 μ m account for 90% or more than.
The dust of described oxides-containing iron and carbon raw material are blast furnace gas mud and/or coal ash.
Beneficial effect of the present invention
The burst temperature of carbon containing green pellets of the present invention is significantly improved.When adopting Sodium salts humic acids, slaked lime composition binding agent, burst temperature has improved 210 ℃.
After the measure by regulating and controlling carbonaceous material granularity, burst temperature has improved 100 ℃ again, and promptly burst temperature has improved 310 ℃.The suitable water content of carbon containing green pellets also slightly reduces, and has reduced water consumption.
Moreover, after adopting the measure of adjusting carbonaceous material granularity of the present invention, the ultimate compression strength of carbon containing green pellets and dropping strength also have more significantly raising, and the wet bulb compression strength value has improved the 5.8-6.1N/ ball, and the dry bulb compression strength value has improved the 4.4-5.1N/ ball.The wet bulb dropping strength has improved 3.5 times/ball.The dry bulb dropping strength has improved 3.5 times/ball.
Sodium salts humic acids, slaked lime are formed the binding agent cost and are descended, and the lime composition that increases enters ironmaking after to the pelletizing reduction or steel-making all can play useful flux effect.
Obtaining of above-mentioned beneficial effect can be analyzed as follows from mechanism: 1.Ca (OH)
2Can with the Sodium salts humic acids reacting generating complex, in addition, Ca (OH)
2Middle calcium ion can make Sodium salts humic acids polymer generation cohesion, changes netted colloid into by thread-like molecule, and these two kinds of effects have significantly reduced the binding agent hydrophilic radical, and the effect that improves pellet strength and burst temperature is arranged simultaneously.Test shows: these act on, and role and effect have very big-difference under different pelletizing processing modes and the different add-on, dish is made under the ball condition in unit, when the Sodium salts humic acids add-on less than 1% the time, raising to burst temperature has remarkable effect, and when its add-on greater than 1% the time, not obvious to the raising effect of burst temperature.2. test shows, dish is made under the ball condition in unit, and the granularity below the carbon contg particle 10 μ m is to the granularity of pellet strength role greater than other kind particle, and is when the ratio of the following particle of 10 μ m improves, remarkable to the raising effect of green pellet strength.
Embodiment
The present invention will be further described below by embodiment.
Embodiment 1
The wet bulb granularity is 12-13mm; Blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 83.5% (wt); Smokeless coal ash (butt, 10 μ m following 90%), 15% (wt); Sodium salts humic acids (butt, weight) 0.5%, slaked lime (butt, weight) 1%.
In the compound, the following particle ratio of 10 μ m accounts for 67.8%.; The following coal ash particle ratio of 10 μ m accounts for 13.5%: water content is 9%.
The green-ball performance is: burst temperature: 430 ℃; Wet bulb ultimate compression strength 17.1N/ ball, dry bulb compression strength value 29.1N/ ball.12.1 times/ball of wet bulb dropping strength; 5.9 times/ball of dry bulb dropping strength.
Embodiment 2
The wet bulb granularity is 12-13mm; Blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 82.5% (wt); Smokeless coal ash (butt, 10 μ m following 90%), 15% (wt); Sodium salts humic acids (butt, weight) 1.0%, slaked lime (butt, weight) 1.5%.
In the compound, the following particle ratio of 10 μ m accounts for 67.1%; The following coal ash particle ratio of 10 μ m accounts for 13.5%, and water content is 9%.
The green-ball performance is: burst temperature, 470 ℃; Wet bulb ultimate compression strength 16.9N/ ball, dry bulb ultimate compression strength 28.8N/ ball.12.1 times/ball of wet bulb dropping strength; 5.3 times/ball of dry bulb dropping strength.
Embodiment 3
Wet variole degree is 12-13mm; Blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 81% (wt); Smokeless coal ash (butt, 10 μ m following 90%): 15% (wt); Sodium salts humic acids (butt, weight) 1.0%, slaked lime (butt, weight) 3%.
In the compound, the following particle ratio of 10 μ m accounts for 66.2%.; The following coal ash particle ratio of 10 μ m accounts for 13.5%, and water content is 9%.
The green-ball performance is: burst temperature, 510 ℃; Wet bulb ultimate compression strength 16.6N/ ball, dry bulb ultimate compression strength 28.7N/ ball.11.9 times/ball of wet bulb dropping strength; 5.1 times/ball of dry bulb dropping strength.
Embodiment 4
The wet bulb granularity is 12-13mm; Blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 73.5% (wt); Smokeless coal ash (butt, 10 μ m following 90%), 25% (wt); Sodium salts humic acids (butt, weight) 0.5%, slaked lime (butt, weight) 1%.
In the compound, the following particle ratio of 10 μ m accounts for 70.3%.; The following coal ash particle ratio of 10 μ m accounts for 22.5%: water content is 9.2%.
The green-ball performance is: burst temperature: 405 ℃; Wet bulb ultimate compression strength 15.2N/ ball, dry bulb ultimate compression strength 25.2N/ ball.10.1 times/ball of wet bulb dropping strength; 4 times/ball of dry bulb dropping strength.
Embodiment 5
The wet bulb granularity is 12-13mm; Blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 72.5% (wt); Smokeless coal ash (butt, 10 μ m following 90%), 25% (wt); Sodium salts humic acids (butt, weight) 1.0%, slaked lime (butt, weight) 1.5%.
In the compound, the following particle ratio of 10 μ m accounts for 69.6%; The following coal ash particle ratio of 10 μ m accounts for 22.5%, and water content is 9.2%.
The green-ball performance is: burst temperature, 43 5 ℃; Wet bulb ultimate compression strength 15.6N/ ball, dry bulb ultimate compression strength 24.8N/ ball.9.8 times/ball of wet bulb dropping strength; 4.2 times/ball of dry bulb dropping strength.
Embodiment 6
Wet variole degree is 12-13mm; Blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 71% (wt); Smokeless coal ash (butt, 10 μ m following 90%): 25% (wt); Sodium salts humic acids (butt, weight) 1.0%, slaked lime (butt, weight) 3%.
In the compound, the following particle ratio of 10 μ m accounts for 68.7%.; The following coal ash particle ratio of 10 μ m accounts for 22.5%, and water content is 9.2%.
The green-ball performance is: burst temperature, 455 ℃; Wet bulb ultimate compression strength 14.5N/ ball, dry bulb ultimate compression strength 25.4N/ ball.11.1 times/ball of wet bulb dropping strength; 4.4 times/ball of dry bulb dropping strength.
Comparative Examples
The wet bulb granularity is 12-13mm; Used material composition (butt): blast furnace gas mud (containing full iron 49%), smokeless coal ash proportioning are: blast furnace gas mud (contain the following particle of full iron 49%, 10 μ m and account for 65%, butt) 85% (wt); Smokeless coal ash (butt, 10 μ m following 90%), 15% (wt);
In the compound, the following particle ratio of 10 μ m accounts for the following coal ash particle ratio of 68.75%, 10 μ m and accounts for 13.5%, and water content is 9%.
The green-ball performance is: burst temperature, and 300 ℃, wet bulb ultimate compression strength 16.9N/ ball, the dry bulb compression strength value is the 29.4N/ ball.12.2 times/ball of wet bulb dropping strength.6.3 times/ball of dry bulb dropping strength.
And under same raw material and proportioning, when the particle ratio below the 10 μ m in the coal ash only accounted for 40%, the following coal ash particle ratio of 10 μ m accounted for 6% o'clock, burst temperature, and 200 ℃, wet bulb ultimate compression strength 10.8N/ ball, dry bulb compression strength value are the 24.3N/ ball.8.6 times/ball of wet bulb dropping strength.4.2 times/ball of dry bulb dropping strength.
0.5～1.0%; Slaked lime 1～3%, carbon raw material 10-25%, all the other butt compositions are the dust of oxides-containing iron; Wet bulb group's water content is 9-11%.
Table 1
| Embodiment | Sodium salts humic acids | Slaked lime | Carbon raw material | The dust of oxides-containing iron |
| ??1 | ??0.5 | ??1 | ??15 | ??83.5 |
| ??2 | ??1 | ??1.5 | ??15 | ??82.5 |
| ??3 | ??1 | ??3 | ??15 | ??81 |
| ??4 | ??0.5 | ??1 | ??25 | ??73.5 |
| ??5 | ??1 | ??1.5 | ??25 | ??72.5 |
| ??6 | ??1 | ??3 | ??25 | ??71 |
| ??7 | ??0.8 | ??2.2 | ??20 | ??77 |
| Comparative Examples | ??- | ??- | ??15 | ??85 |
Claims (3)
1. the carbonaceous pelletizing of a high burst temperature, its butt composition quality per-cent is: Sodium salts humic acids 0.5～1.0%; Slaked lime 1～3%, carbon raw material 10-25%, all the other butt compositions are the dust of oxides-containing iron; Wet bulb group's water content is 9-11%.
2. the carbonaceous pelletizing of high burst temperature as claimed in claim 1 is characterized in that, in the described carbon raw material granularity the particle below the 10 μ m account for 90% or more than.
3. the carbonaceous pelletizing of high burst temperature as claimed in claim 1 or 2 is characterized in that, the dust of described oxides-containing iron and carbon raw material are blast furnace gas mud and/or coal ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041088A CN101638718A (en) | 2008-07-28 | 2008-07-28 | High burst temperature carbonic pellet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041088A CN101638718A (en) | 2008-07-28 | 2008-07-28 | High burst temperature carbonic pellet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101638718A true CN101638718A (en) | 2010-02-03 |
Family
ID=41613898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810041088A Pending CN101638718A (en) | 2008-07-28 | 2008-07-28 | High burst temperature carbonic pellet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101638718A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978386A (en) * | 2012-10-31 | 2013-03-20 | 高金菊 | Combined preparation method for carbon-containing pellet used for blast furnace |
| CN102978385A (en) * | 2012-10-31 | 2013-03-20 | 高金菊 | Carbon-containing pellet for blast furnace |
| CN103255292A (en) * | 2013-05-22 | 2013-08-21 | 连云港腾翔金属材料有限公司 | Additive for carbonthermal reduction of nickel laterite ore |
| CN104164559A (en) * | 2014-08-28 | 2014-11-26 | 中南大学 | Method for improving pelletizability of low-pelletizability iron concentrate |
| CN104164560A (en) * | 2014-08-28 | 2014-11-26 | 中南大学 | Sodium humate adhesive solution for iron ore pellets as well as preparation method and application of sodium humate adhesive solution |
| CN104726698A (en) * | 2015-03-25 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Acidic composite metallized pellet and production process thereof |
-
2008
- 2008-07-28 CN CN200810041088A patent/CN101638718A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978386A (en) * | 2012-10-31 | 2013-03-20 | 高金菊 | Combined preparation method for carbon-containing pellet used for blast furnace |
| CN102978385A (en) * | 2012-10-31 | 2013-03-20 | 高金菊 | Carbon-containing pellet for blast furnace |
| CN102978385B (en) * | 2012-10-31 | 2013-09-18 | 高金菊 | Carbon-containing pellet for blast furnace |
| CN102978386B (en) * | 2012-10-31 | 2013-09-25 | 高金菊 | Combined preparation method for carbon-containing pellet used for blast furnace |
| CN103255292A (en) * | 2013-05-22 | 2013-08-21 | 连云港腾翔金属材料有限公司 | Additive for carbonthermal reduction of nickel laterite ore |
| CN103255292B (en) * | 2013-05-22 | 2015-08-26 | 连云港腾翔金属材料有限公司 | A kind of red soil nickel ore carbothermic reduction additive |
| CN104164559A (en) * | 2014-08-28 | 2014-11-26 | 中南大学 | Method for improving pelletizability of low-pelletizability iron concentrate |
| CN104164560A (en) * | 2014-08-28 | 2014-11-26 | 中南大学 | Sodium humate adhesive solution for iron ore pellets as well as preparation method and application of sodium humate adhesive solution |
| CN104164559B (en) * | 2014-08-28 | 2016-11-30 | 中南大学 | A kind of method improving difficult pelletizing iron ore concentrate balling-up |
| CN104726698A (en) * | 2015-03-25 | 2015-06-24 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Acidic composite metallized pellet and production process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102277487B (en) | Adhesive for carbon-containing pellets and using method thereof | |
| CN101270410A (en) | Cold bonded pellet and method of producing the same | |
| CN101638718A (en) | High burst temperature carbonic pellet | |
| KR101589103B1 (en) | Briquette for metallic Fe source of steelmaking furnace using Fe containing byproduct and method for manufacturing the same | |
| CN104313308B (en) | Iron ore low-carbon sintering method | |
| CN112553462A (en) | Sintered ore containing sintered dedusting ash pellets and preparation method thereof | |
| CN104232822A (en) | Method for carrying out blast furnace iron making on high-phosphorus oolitic hematite and vanadium titano-magnetite | |
| CN103290158A (en) | Method for realizing dephosphorization of olitic high-phosphorus iron ore by use of biomass charcoal | |
| CN108103309A (en) | A kind of converter dust-removing ash coal-pressing ball adhesive special | |
| CN102676799A (en) | Preparation method for boron-magnesium composite additive for pellets and product | |
| CN101586184A (en) | A kind of fast binder that utilizes ferrous material to produce cooled agglomerated pellet | |
| CN103667700A (en) | Production method for smelting high carbon chromium iron by using carbonaceous combination reducing agent | |
| CN114350939A (en) | Pellet for producing alkaline fine iron ore by magnetizing roasting and preparation method thereof | |
| CN103451421A (en) | Preparation method of blast furnace gas mud pre-reduced pellets | |
| CN101353724A (en) | Pelletizing Method of Vanadium-Titanium Magnetite Concentrate Sodiumized Pellets | |
| CN104805280A (en) | Technology for producing metal furnace burden for high-quality electric furnace by coal-based method | |
| CN102230077B (en) | A method of producing sintered ore by using mixture | |
| CN102978385B (en) | Carbon-containing pellet for blast furnace | |
| CN103397178A (en) | Molding and agglomerating process of secondary iron-contained mud from iron and steel plant | |
| CN110894572B (en) | Additive for reducing roasting temperature of high-silicon magnetite concentrate pellets and application method thereof | |
| CN102337394A (en) | Composition for fabricating pellets | |
| CN101768663B (en) | Cold bonded iron-carbon pellets, and manufacturing method and applications thereof as ironmaking burden in shaft furnace or blast furnace | |
| CN104232888A (en) | Method for preparing cooled agglomerated pellets by using dry method electric fly ash of converter gas | |
| CN102994740B (en) | Method for preparing carbon-containing pellet for blast furnace | |
| CN106381407B (en) | A kind of carbonaceous reducing agent smelted for one-step method calcium-silicon and lime Composite burden preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100203 |