CN106811597A - A kind of method that utilization limekiln exhaust gas produce blast furnace cold-bonded carbonaceous pelletizing - Google Patents
A kind of method that utilization limekiln exhaust gas produce blast furnace cold-bonded carbonaceous pelletizing Download PDFInfo
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- CN106811597A CN106811597A CN201510870723.1A CN201510870723A CN106811597A CN 106811597 A CN106811597 A CN 106811597A CN 201510870723 A CN201510870723 A CN 201510870723A CN 106811597 A CN106811597 A CN 106811597A
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Abstract
The invention provides a kind of method that utilization limekiln exhaust gas produce blast furnace cold-bonded carbonaceous pelletizing, carbonaceous material, ferrous material, quick lime, binding agent are uniformly mixed, the water of compound gross weight 10%~20% is accounted for addition in compound, is fully digested after stacking 1~3h；Postdigestive compound is carried out into disk pelletizing or method to roll-in ball carries out agglomeration, obtains carbonaceous pelletizing green-ball；Transport green-ball to maintenance reaction warehouse, limekiln exhaust gas are passed through to green-ball maintenance reaction warehouse bottom, at 100~150 DEG C, curing time is more than 24h to the limekiln exhaust gas temperature being passed through, and obtains blast furnace cold-bonded carbonaceous pelletizing.The method that the present invention produces cold-bonded carbonic pellet using limekiln exhaust gas, can both produce elevated temperature strength cold-bonded carbonic pellet high, and CO in limekiln exhaust gas can be significantly reduced again2The method of discharge capacity, and pelletizing elevated temperature strength is big, and heat endurance is good.
Description
Technical field
The invention belongs to metallurgical environmental protection and ironmaking agglomeration field, more particularly to a kind of cold-bonded carbonic
The production method of pelletizing.
Background technology
Supporting Lime Factory of steel plant is annual to the substantial amounts of waste gas of airborne release, and limekiln exhaust gas are
The CO high produced during the calcined limestone industrial production quick lime of limekiln2Content waste gas, on
The general end of waste gas for stating process generation directly drains into air through utilizing, CO in limekiln exhaust gas2
Content is general to reach as high as 40% between 25%~35%, all higher than other industrial furnace exhaust gas
And containing a certain amount of waste heat, if by CO2Being directly discharged into air will cause the waste of the energy
With the pollution of air, the dust in flue gas can also cause very big pollution to surrounding enviroment.Steel smelting
CO during gold2Worldwide concern, low-carbon environment-friendly refining have been caused with the discharge of dust
Iron is the primary goal of ironmaking worker.
Cold-bonded carbonic pellet is by iron-bearing material (mainly Iron Ore Powder and iron dust containing), contains
Carbon raw material (mainly coal dust and dust containing C) and use to roller after binding agent mixes in proportion
The mode agglomeration of briquetting and disk pelletizing, then a kind of maintaining production iron-smelting raw material out, cold
Bonded carbonic pellet production technology avoids traditional high-temperature sintering process, greatly shortens work
Skill flow, has the advantages that strong reproducibility, low production cost, environmental protection and energy-conservation.Freeze off knot
Carbonaceous pelletizing is direct-reduction technique and the main iron-smelting raw material of smelting reduction process, but due to it
Elevated temperature strength is low, and heat endurance difference is difficult to meet blast furnace ironmaking needs.
Document " Preliminary Practice of production carbonic acid pellet " author：Tang Guangwu《Sichuan is metallurgical》1979
Year, describe using exhaust gas of hot-blast stove pelletizing of the maintenance containing CaO, production blast furnace carbonating
The technique of pelletizing, but due to CO in exhaust gas of hot-blast stove2Content is generally relatively low, and green ball strength increases
Plus it is slow, cause that carbonic acid pellet is curing cycle long, pelletizing cold strength is low.
《The method of the miberal powder cold bound pellet with waterglass as binding agent》(application number：
201210141420.2) the production blast furnace carbonaceous pelletizing with waterglass as binding agent is disclosed
Method, the method is to by adding waterglass in the modified miberal powder of highly basic, through mixed grind, pressure
Finished product pelletizing after block, drying.
《Cement admixture makees binding agent consolidation mineral fine and makes carbonaceous pelletizing》(application number：
200710146728.5) side of the production blast furnace carbonaceous pelletizing with cement as binding agent is disclosed
Method, the method by miberal powder, carbon dust and 10% cement uniformly mix after pelletizing by after maintenance 3 days,
Can be made into blast furnace carbonaceous pelletizing.
Above-mentioned patent Shortcomings are, although the carbonaceous pelletizing that above two method is produced
Intensity is all higher, but either waterglass and cement are after the heating more than 200 DEG C, cement and
Ripples glass adhesive property can all fail rapidly, and pellet strength declines rapidly, and elevated temperature strength is low.
《The preparation method of hot pressed balls of iron ore concentrate and powdered coal》(application number 200710010097.4) is public
The cloth preparation method of Carbon Composite Iron Ore Hot Briquette, although the pelletizing cold strength produced of the method and
Elevated temperature strength all meets blast furnace ironmaking production requirement, but the production process of hot pressing pelletizing needs thing
First by preheating of mixed material, and the high temperature dwell at 350~500 DEG C is needed during to roll-in ball
Completed under 20~30min of temperature, low production efficiency, hot pressing easily ignites coal in compound
Powder, security is poor, and coal dust used is necessary for strong and scarcity of resources the coking coal of caking property.
To overcome Shortcomings in above-mentioned patent and document, be passed through for limekiln exhaust gas and contain by the present invention
Carbon pellets green-ball maintenance bin, using the CO of limekiln exhaust gas middle and high concentration2In gas and pelletizing
CaO produces chemical reaction, makes to form CaCO between the CaO particles in pelletizing3Crossover,
So that pelletizing is consolidated, and excessive moisture in pelletizing is quickly taken away using waste heat in waste gas, make
Pelletizing curing time shortens.
The content of the invention
One kind is provided and utilizes limekiln it is an object of the invention to overcome above mentioned problem and deficiency
The method that waste gas produces cold-bonded carbonic pellet, can both produce the elevated temperature strength knot that freezes off high and contain
Carbon pellets, can significantly reduce CO in limekiln exhaust gas again2The method of discharge capacity.
What the object of the invention was realized in：
The present invention is intended to provide one kind can produce cold strength and elevated temperature strength is satisfied by blast furnace refining
Iron requirement, while avoiding conventional sintering technique and reducing steel plant limekiln exhaust gas CO2Discharge capacity
Cold-bonded carbonic pellet production method, the present invention using high content in limekiln exhaust gas CO2
Reacted with the CaO in pelletizing and generate CaCO3Skeleton is simultaneously using the waste heat band in waste gas
Moisture unnecessary in pelletizing is walked, the purpose of rapidly solidified pelletizing is reached.Due to CaCO3Point
Solution temperature is close to 900 DEG C, therefore the cold-bonded carbonic pellet that the method is produced is with higher
Elevated temperature strength, after temperature is more than 900 DEG C, due to containing in the C powder inside pelletizing and pelletizing
There is reduction reaction in iron substance, generation metal iron skeleton in pelletizing inside makes after 900 DEG C of pelletizing still
Intensity is so kept, until pelletizing softens melting, blast furnace process cold-bonded carbonic ball is overcome completely
During group, carbonaceous pelletizing is low because of elevated temperature strength, and pelletizing was produced before metal iron skeleton is generated
Explosion, causes the shortcoming of blast furnace hanging and gobbed up.
A kind of method that utilization limekiln exhaust gas produce blast furnace cold-bonded carbonaceous pelletizing,
(1) carbonaceous material of 200 purposes, ferrous material, quick lime, viscous will be narrower than respectively
Knot agent, is 5~15%, 50%~70% according to percentage by weight：15%~25%：5%~10%
Uniform mixing；
(2) water of compound gross weight 10%~20% is accounted for addition in compound in (1),
Fully digested after stacking 1~3h；
(3) postdigestive compound is carried out into disk pelletizing or method to roll-in ball is made
Block, obtains carbonaceous pelletizing green-ball；
(4) transport green-ball to maintenance reaction warehouse, lime is passed through to green-ball maintenance reaction warehouse bottom
Kiln waste gas, at 100~150 DEG C, curing time is more than 24h to the limekiln exhaust gas temperature being passed through,
Obtain the blast furnace cold-bonded carbonaceous pelletizing of finished product.
The ferrous material is that Iron Ore Powder, converter dirt, electric furnace dirt, sintering machine head end ash and sintering are returned
One or more in ore deposit；The carbonaceous material is coal dust, blast furnace cloth bag ash, blast furnace gravitational dust
With coking dedusting ash one or more；Described binding agent is bentonite, carboxymethylcellulose calcium
Any one in sodium and both the above.
The beneficial effects of the present invention are：
(1) using freezing off knot agglomeration process, it is to avoid traditional sintering process, it is possible to reduce
CO2Discharge capacity；
(2) CO of the technology utilization limekiln exhaust gas middle and high concentration2It is anti-with CaO in pelletizing
CaCO should be generated3Skeleton increases pellet strength, not only reduces in limekiln in waste gas
CO2Discharge capacity, and curing time is shortened, with social value and economic worth higher；
(3) by the waste heat preheating green-ball of limekiln exhaust gas, unnecessary moisture quilt in pelletizing is made
Hot waste gas is taken away, and green ball strength is quickly increased, it is to avoid to make green-ball because of the extruding between pelletizing
Crushed before reaching intensity, the effect with preferable energy-saving and emission-reduction；
(4) in limekiln exhaust gas contain a certain amount of lime dust, lime dust light specific gravity,
Hygroscopicity is strong, can adsorb on carbon containing green-ball surface, it is to avoid in carbonaceous pelletizing maintenance processes each other
Adhesion；
(5) pelletizing inside be furnished with a certain proportion of C powder, played inside pelletizing reducing agent and
The effect of exothermic mixture, can improve pelletizing reproducibility and reduce coke ratio；
(6) CaCO that cold-bonded carbonic pellet of the present invention is generated by pelletizing inside3Skeleton is consolidated
Knot, because of CaCO3Decomposition temperature is (decomposition temperature is 898 DEG C) high, therefore pelletizing elevated temperature strength
Greatly, heat endurance is good, overcomes traditional cold-bonded carbonic pellet cold strength greatly, and elevated temperature strength is low
The shortcoming for easily bursting；
(7) the method production carbonaceous pelletizing can reclaim steel plant's converter dirt, blast furnace dust
With the dust such as sintering machine head end ash, pelletizing cost is reduced；
(8) certain alkali metal is contained in dust, the alkali metal in carbonaceous pelletizing can be catalyzed
Coal dust in pelletizing improves pelletizing reproducibility.
Specific embodiment
Below by embodiment, the present invention is further illustrated.
Example 1
The blast furnace cold-bonded carbonaceous pelletizing of the present invention is with steel plant's Iron Ore Powder, coal dust, quick lime
Raw material.The cold-bonded carbonic pellet material composition of the embodiment of the present invention 1 is shown in Table 1.
The cold-bonded carbonic pellet material composition (%) of 1 embodiment of the present invention of table 1
More than 90% is accounted for being narrower than 200 mesh ratios by compound is levigate respectively, is then mixed in proportion
Close, the cold-bonded carbonic pellet proportion scheme of the embodiment of the present invention 1 is shown in Table 2.
The cold-bonded carbonic pellet proportion scheme of 2 embodiment of the present invention of table 1
The water of compound gross weight 15% is accounted for addition in compound, water and compound are uniformly mixed
Close, fully digested after stacking 2h.Compound is put into carries out pelletizing in disc balling machine
Obtain carbonaceous pelletizing green-ball.
Transport green-ball to maintenance reaction warehouse, being passed through limekiln to green-ball maintenance reaction warehouse bottom gives up
Gas, controls to the limekiln exhaust gas temperature being passed through in green-ball maintenance bin in 120 DEG C, curing time
It is more than 24h, obtains the blast furnace cold-bonded carbonaceous pelletizing of finished product.
Intensity and other cold-bonded carbonic balls after the embodiment of the present invention 1 is preheated under reducing atmosphere
Group's intensity contrast is shown in Table 3, and carbonaceous pelletizing elevated temperature strength of the present invention is more traditional as can be seen from Table 3
Technique such as waterglass and cement improve a lot for the pelletizing that binding agent is produced, and the present invention is real
Apply the cold-bonded carbonic pellet of example 1 and pellet ore reduction contrast is shown in Table 4, reproducibility improves 4%
Left and right, can meet blast furnace ironmaking needs.
Intensity and other cold-bonded carbonic pellet intensity contrasts (N/ balls) after the embodiment of the present invention 1 is preheated under the reducing atmosphere of table 3
The cold-bonded carbonic pellet of 4 embodiment of the present invention of table 1 and pellet ore reduction are contrasted
Example 2
The blast furnace cold-bonded carbonaceous pelletizing of the present invention is with Dust of Iron And Steel Works, quick lime as raw material.This
The cold-bonded carbonic pellet material composition of inventive embodiments 2 is shown in Table 5.
The cold-bonded carbonic pellet material composition (%) of 5 embodiment of the present invention of table 2
More than 90% is accounted for being narrower than 200 mesh ratios by compound is levigate respectively, is then mixed in proportion
Close, the cold-bonded carbonic pellet proportion scheme of the embodiment of the present invention 2 is shown in Table 6.
The cold-bonded carbonic pellet proportion scheme of 6 embodiment of the present invention of table 2
The water of compound gross weight 20% is accounted for addition in compound, water and compound are uniformly mixed
Close, fully digested after stacking 2h.Compound is put into carrying out agglomeration in roll-in ball machine,
It is pressed into pillow type carbonaceous pelletizing green-ball.
Transport green-ball to maintenance reaction warehouse, being passed through limekiln to green-ball maintenance reaction warehouse bottom gives up
Gas, controls to the limekiln exhaust gas temperature being passed through in green-ball maintenance bin in 120 DEG C, curing time
It is more than 32h, obtains the blast furnace cold-bonded carbonaceous pelletizing of finished product.The present invention under reducing atmosphere
Intensity is shown in Table 7, the present invention with other cold-bonded carbonic pellet intensity contrasts after embodiment 2 is preheated
The cold-bonded carbonic pellet of embodiment 2 and pellet ore reduction contrast are shown in Table 8.
Intensity and other cold-bonded carbonic pellet intensity contrasts (N/ balls) after the embodiment of the present invention 2 is preheated under the reducing atmosphere of table 7
The cold-bonded carbonic pellet of 8 embodiment of the present invention of table 2 and pellet ore reduction are contrasted
Example 3
The blast furnace cold-bonded carbonaceous pelletizing of the present invention is with Dust of Iron And Steel Works, quick lime as raw material.This
The cold-bonded carbonic pellet material composition of inventive embodiments 3 is shown in Table 9.
The cold-bonded carbonic pellet material composition (%) of 9 embodiment of the present invention of table 1
More than 90% is accounted for being narrower than 200 mesh ratios by compound is levigate respectively, is then mixed in proportion
Close, the cold-bonded carbonic pellet proportion scheme of the embodiment of the present invention 3 is shown in Table 10.
The cold-bonded carbonic pellet proportion scheme of 10 embodiment of the present invention of table 3
The water of compound gross weight 20% is accounted for addition in compound, water and compound are uniformly mixed
Close, fully digested after stacking 2h.Compound is put into carries out pelletizing in disc balling machine
Obtain carbonaceous pelletizing green-ball.
Transport green-ball to maintenance reaction warehouse, being passed through limekiln to green-ball maintenance reaction warehouse bottom gives up
Gas, controls to the limekiln exhaust gas temperature being passed through in green-ball maintenance bin in 120 DEG C, curing time
It is more than 32h, obtains the blast furnace cold-bonded carbonaceous pelletizing of finished product.The present invention under reducing atmosphere
Intensity is shown in Table 11, this hair with other cold-bonded carbonic pellet intensity contrasts after embodiment 3 is preheated
The cold-bonded carbonic pellet of bright embodiment 3 and pellet ore reduction contrast are shown in Table 12.
Intensity and other cold-bonded carbonic pellet intensity contrasts (N/ balls) after the embodiment of the present invention 3 is preheated under the reducing atmosphere of table 11
The cold-bonded carbonic pellet of 12 embodiment of the present invention of table 1 and pellet ore reduction are contrasted
Example 4
The blast furnace cold-bonded carbonaceous pelletizing of the present invention is with Dust of Iron And Steel Works, quick lime as raw material.This
The cold-bonded carbonic pellet material composition of inventive embodiments 4 is shown in Table 13.
The cold-bonded carbonic pellet material composition (%) of 13 embodiment of the present invention of table 4
More than 90% is accounted for being narrower than 200 mesh ratios by compound is levigate respectively, is then mixed in proportion
Close, the cold-bonded carbonic pellet proportion scheme of the embodiment of the present invention 4 is shown in Table 14.
The cold-bonded carbonic pellet proportion scheme of 14 embodiment of the present invention of table 1
The water of compound gross weight 20% is accounted for addition in compound, water and compound are uniformly mixed
Close, fully digested after stacking 2h.Compound is put into carrying out agglomeration in roll-in ball machine,
It is pressed into pillow type carbonaceous pelletizing green-ball.
Transport green-ball to maintenance reaction warehouse, being passed through limekiln to green-ball maintenance reaction warehouse bottom gives up
Gas, controls to the limekiln exhaust gas temperature being passed through in green-ball maintenance bin in 120 DEG C, curing time
It is more than 32h, obtains the blast furnace cold-bonded carbonaceous pelletizing of finished product.The present invention under reducing atmosphere
Intensity is shown in Table 15, this hair with other cold-bonded carbonic pellet intensity contrasts after embodiment 4 is preheated
The cold-bonded carbonic pellet of bright embodiment 4 and pellet ore reduction contrast are shown in Table 16.
Intensity and other cold-bonded carbonic pellet intensity contrasts (N/ balls) after the embodiment of the present invention 4 is preheated under the reducing atmosphere of table 15
Table 16：The cold-bonded carbonic pellet of the embodiment of the present invention 4 and pellet ore reduction are contrasted
Example 5
The blast furnace cold-bonded carbonaceous pelletizing of the present invention is with Dust of Iron And Steel Works, quick lime as raw material.This
The cold-bonded carbonic pellet material composition of inventive embodiments 6 is shown in Table 17.
The cold-bonded carbonic pellet material composition (%) of 17 embodiment of the present invention of table 6
More than 90% is accounted for being narrower than 200 mesh ratios by compound is levigate respectively, is then mixed in proportion
Close, the cold-bonded carbonic pellet proportion scheme of the embodiment of the present invention 6 is shown in Table 18.
The cold-bonded carbonic pellet proportion scheme of 18 embodiment of the present invention of table 6
The water of compound gross weight 20% is accounted for addition in compound, water and compound are uniformly mixed
Close, fully digested after stacking 2h.Compound is put into carrying out agglomeration in roll-in ball machine,
It is pressed into pillow type carbonaceous pelletizing green-ball.
Transport green-ball to maintenance reaction warehouse, being passed through limekiln to green-ball maintenance reaction warehouse bottom gives up
Gas, controls to the limekiln exhaust gas temperature being passed through in green-ball maintenance bin in 120 DEG C, curing time
It is more than 32h, obtains the blast furnace cold-bonded carbonaceous pelletizing of finished product.The present invention under reducing atmosphere
Intensity is shown in Table 19, this hair with other cold-bonded carbonic pellet intensity contrasts after embodiment 6 is preheated
The cold-bonded carbonic pellet of bright embodiment 6 and pellet ore reduction contrast are shown in Table 20.
Intensity and other cold-bonded carbonic pellet intensity contrasts (N/ balls) after the embodiment of the present invention 6 is preheated under the reducing atmosphere of table 19
The cold-bonded carbonic pellet of 20 embodiment of the present invention of table 6 and pellet ore reduction are contrasted
Claims (4)
1. a kind of method that utilization limekiln exhaust gas produce blast furnace cold-bonded carbonaceous pelletizing, it is characterised in that
(1) it is 5~15%, 50%~70% according to percentage by weight by carbonaceous material, ferrous material, quick lime, binding agent：15%~25%：5%~10% uniform mixing；Compound is narrower than 200 mesh ratios and accounts for more than 90%；
(2) water of compound gross weight 10%~20% is accounted for addition in compound in (1), is fully digested after stacking 1~3h；
(3) postdigestive compound is carried out into disk pelletizing or method to roll-in ball carries out agglomeration, obtains carbonaceous pelletizing green-ball；
(4) transport green-ball to maintenance reaction warehouse, limekiln exhaust gas are passed through to green-ball maintenance reaction warehouse bottom, at 100~150 DEG C, curing time is more than 24h to the limekiln exhaust gas temperature being passed through, and obtains blast furnace cold-bonded carbonaceous pelletizing.
2. the method for producing blast furnace cold-bonded carbonaceous pelletizing using limekiln exhaust gas according to claim 1, it is characterised in that the ferrous material is one or more in Iron Ore Powder, converter dirt, electric furnace dirt, sintering machine head end ash and sinter return fine.
3. the method for producing blast furnace cold-bonded carbonaceous pelletizing using limekiln exhaust gas according to claim 1, it is characterised in that the carbonaceous material is one or more of coal dust, blast furnace cloth bag ash, blast furnace gravitational dust and coking dedusting ash.
4. the method for producing blast furnace cold-bonded carbonaceous pelletizing using limekiln exhaust gas according to claim 1, it is characterised in that described binding agent be in bentonite, sodium carboxymethylcellulose any one and more than.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111057842A (en) * | 2019-12-28 | 2020-04-24 | 海城市鹏程镁矿有限公司 | Method for preparing magnesite powder ore green ball by carbon dioxide carbonization method |
| CN111057841A (en) * | 2019-12-28 | 2020-04-24 | 海城市鹏程镁矿有限公司 | Magnesite powder ore pelletizing method using inorganic binder |
| CN114672604A (en) * | 2022-03-31 | 2022-06-28 | 鞍钢股份有限公司 | Method for preparing direct reduced iron from carbon-containing waste |
| CN115404340A (en) * | 2022-09-27 | 2022-11-29 | 鞍钢股份有限公司 | Method for producing cold-bonded pellets by using coking fly ash |
| WO2023015765A1 (en) * | 2021-08-07 | 2023-02-16 | 湘潭炜达机电制造有限公司 | Iron ore powder briquetting method and an extrusion molding die |
| CN116426748A (en) * | 2023-05-16 | 2023-07-14 | 中天钢铁集团(南通)有限公司 | Production method for limonite pellet belt roasting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158903A (en) * | 1996-12-03 | 1997-09-10 | 吕美竺 | Industrial production method of cold-cured pellet used directly for iron and steel smelting |
| CN102912120A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for manufacturing high-strength cold-pressed pellets |
| CN103320607A (en) * | 2013-07-05 | 2013-09-25 | 首钢京唐钢铁联合有限责任公司 | Cold solid ball and preparation method thereof |
| CN104211360A (en) * | 2013-06-02 | 2014-12-17 | 陈先雄 | Technology utilizing limekiln tail gas and slag to produce carbonized construction section bars and carbonized coal briquettes |
-
2015
- 2015-12-02 CN CN201510870723.1A patent/CN106811597A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158903A (en) * | 1996-12-03 | 1997-09-10 | 吕美竺 | Industrial production method of cold-cured pellet used directly for iron and steel smelting |
| CN102912120A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for manufacturing high-strength cold-pressed pellets |
| CN104211360A (en) * | 2013-06-02 | 2014-12-17 | 陈先雄 | Technology utilizing limekiln tail gas and slag to produce carbonized construction section bars and carbonized coal briquettes |
| CN103320607A (en) * | 2013-07-05 | 2013-09-25 | 首钢京唐钢铁联合有限责任公司 | Cold solid ball and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111057842A (en) * | 2019-12-28 | 2020-04-24 | 海城市鹏程镁矿有限公司 | Method for preparing magnesite powder ore green ball by carbon dioxide carbonization method |
| CN111057841A (en) * | 2019-12-28 | 2020-04-24 | 海城市鹏程镁矿有限公司 | Magnesite powder ore pelletizing method using inorganic binder |
| WO2023015765A1 (en) * | 2021-08-07 | 2023-02-16 | 湘潭炜达机电制造有限公司 | Iron ore powder briquetting method and an extrusion molding die |
| CN114672604A (en) * | 2022-03-31 | 2022-06-28 | 鞍钢股份有限公司 | Method for preparing direct reduced iron from carbon-containing waste |
| CN115404340A (en) * | 2022-09-27 | 2022-11-29 | 鞍钢股份有限公司 | Method for producing cold-bonded pellets by using coking fly ash |
| CN116426748A (en) * | 2023-05-16 | 2023-07-14 | 中天钢铁集团(南通)有限公司 | Production method for limonite pellet belt roasting |
| CN116426748B (en) * | 2023-05-16 | 2024-05-31 | 中天钢铁集团(南通)有限公司 | Production method for limonite pellet belt roasting |
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