CN102002583A - Palletizing method of iron ore powder - Google Patents
Palletizing method of iron ore powder Download PDFInfo
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- CN102002583A CN102002583A CN200910172841XA CN200910172841A CN102002583A CN 102002583 A CN102002583 A CN 102002583A CN 200910172841X A CN200910172841X A CN 200910172841XA CN 200910172841 A CN200910172841 A CN 200910172841A CN 102002583 A CN102002583 A CN 102002583A
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Abstract
The invention relates to a palletizing method of iron ore powder. A preparation process of an iron ore pellet comprises the following steps of: placing the iron ore powder with different iron contents into a mixing mill according to certain weight percentage (determined according to the iron contents of various powder materials and the requirements for the total iron content of the iron ore pellet), milling in a mixing manner for 1-3 minutes, and then adding organic and inorganic composite binders; then milling in the mixing manner for 5-10 minutes so as to enter a transmission belt to a pellet forming machine; and enabling the formed pellet to enter a low-temperature furnace at a temperature of 100-120 DEG C through the transmission belt for drying for 30-60 minutes and then enter a high-temperature furnace at a temperature of 480-520 DEG C for drying for 30-60 minutes, wherein the intensity of the pellet can reach more than 1800 N so as to meet the requirements for smelting. The palletizing method is easy to realize the flow line large-scale production and has low production cost and wide application value in metallurgy industry.
Description
Technical field
The present invention is specifically related to a kind of iron ore powder pelletizing method; Be metallurgy industry with the nodularization of iron ore powder ball after, enter blast-furnace smelting, a kind of practical technique of extracting metals from ore powder.
Technical background
There is stronger air current flow in the course of the work in blast furnace body inside, powder raw material can be rolled out body of heater by air-flow and can't use outward, yet in the shattering process of ore, the iron ore efflorescence is unavoidable, therefore how making the group's nodularization of powdered iron ore and satisfy smelting requirements, is one of effective means of utilizing valuable iron ore resource.Study more cooled agglomerated pellet method at present, the subject matter of its existence is: (1) is in order to satisfy the required intensity of pelletizing, except in powder, adding the necessary binding agent, the iron powder that also need add 10% iron content 90%, this extra about 380 yuan per ton of tooling cost that increases, head and shoulders above expected cost; (2) generation of pellet strength needs repeated multiple times pouring curing agent that pelletizing is carried out maintenance, can not satisfy the large-scale production of pipeline system, can't realize batch production requirements; (3) intensity instability.According to statistics, in existing application, if 1000 tons of pelletizings of processing, last blast furnace can with have only 300 tons, other all efflorescence, yield rate too low, no economy.Present method can solve these problems of present existence.
Summary of the invention
The present invention relates to a kind of iron ore powder pelletizing method.The preparation process of its iron ore pellet is: the iron ore powder that iron-holder is different enters in the mixing pan by certainweight per-cent (its ratio is determined according to various powder iron-holder and to the total iron-holder requirement of pelletizing), add binding agent after mixed grind 1-3 minute, can enter transmission again in mixed grind 5-10 minute and take the pelletizing forming mill to, the shaping pelletizing enters 100-120 ℃ of low temperature oven oven dry 30-60 minute by conveying belt, arrive 480-520 ℃ of High Temperature Furnaces Heating Apparatus oven dry 30-60 minute again, pellet strength can reach more than the 1800N, satisfies smelting requirements.This method easily realizes the streamline large-scale production, and production cost is low, at metallurgy industry wide application value is arranged.
Detailed Description Of The Invention
One aspect of the present invention, the Technology of a kind of iron ore powder ball nodularization is provided, it is characterized in that: (1) iron ore powder raw material mixes by a certain percentage, one of ratio is the high iron powder 40% of iron content 70.5, add powder 50% in the iron content 37.9%, the mud ore deposit 10% of iron content 37.1%, it mixes the back iron-holder about 50%, or other mixes the raw material ratio of back iron-holder about 50%, mixing time 1-3 minute; (2) mix afterwards adding additives 10-14% again and mix, mixing time is 5-10 minute; (3) in low temperature, two stage oven dry of high temperature, the oven dry system is mix products: dried 30-60 minute for 100-120 ℃, dried 30-60 minute for 480-520 ℃ respectively.
Another aspect of the present invention provides the binding agent of a kind of iron ore powder ball nodularization, it is characterized in that: binding agent is the organic and inorganic compound binding agent that 40% sodium silicate aqueous solution (A) 85-100% and 10% polyacrylic acid sodium water solution (B) 0-15% form.
Embodiment
Below in conjunction with implementing example content of the present invention is further described.
Embodiment 1 gets in the 400 kilograms of high iron powders, 500 kilograms and adds powder, double centner mud ore deposit, in muller formula mixing pan, mixed 2 minutes, the compound binding agent that adds the 90%A+10%B composition mixes for 120 kilograms and went out mixing pan in 6 minutes, enter transmission and take forming mill to, the shaping pelletizing takes 110 ℃ of humidity provinces to by transmission and enters 500 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the high strength pelletizing.
Embodiment 2 gets in the 400 kilograms of high iron powders, 500 kilograms and adds powder, double centner mud ore deposit, in muller formula mixing pan, mixed 3 minutes, the compound binding agent that adds the 95%A+5%B composition mixes for 120 kilograms and went out mixing pan in 6 minutes, enter transmission and take forming mill to, the shaping pelletizing takes 100 ℃ of humidity provinces to by transmission and enters 510 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the high strength pelletizing.
Embodiment 3 gets in the 400 kilograms of high iron powders, 400 kilograms and adds powder, 200 kilograms of mud ore deposits, in muller formula mixing pan, mixed 3 minutes, the compound binding agent that adds the 95%A+5%B composition mixes for 120 kilograms and went out mixing pan in 8 minutes, enter transmission and take forming mill to, the shaping pelletizing takes 110 ℃ of humidity provinces to by transmission and enters 500 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the high strength pelletizing.
Embodiment 4 gets in the 400 kilograms of high iron powders, 500 kilograms and adds powder, double centner mud ore deposit, in muller formula mixing pan, mixed 2 minutes, the compound binding agent that adds the 90%A+10%B composition mixes for 120 kilograms and went out mixing pan in 6 minutes, enter transmission and take forming mill to, the shaping pelletizing takes 90 ℃ of humidity provinces to by transmission and enters 490 ℃ of humidity provinces 50 minutes after 50 minutes, promptly obtains the high strength pelletizing.
Embodiment 5 gets in the 400 kilograms of high iron powders, 400 kilograms and adds powder, 200 kilograms of mud ore deposits, in muller formula mixing pan, mixed 2 minutes, the compound binding agent that adds the 90%A+10%B composition mixes for 140 kilograms and went out mixing pan in 6 minutes, enter transmission and take forming mill to, the shaping pelletizing takes 110 ℃ of humidity provinces to by transmission and enters 500 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the high strength pelletizing.
Claims (5)
1. iron ore powder pelletizing method is characterized in that: the iron ore powder raw material mixes back adding additives remix by a certain percentage, and mix products is respectively in low temperature, two stages oven dry of high temperature, thereby obtains high strength, low-cost pelletizing in batches.
2. one of right 1 described iron ore powder material rate is: the high iron powder 40% of iron content 70.5, add powder 50% in the iron content 37.9%, the mud ore deposit 10% of iron content 37.1%, it mixes the back iron-holder about 50%, or other mixes the raw material ratio of back iron-holder about 50%.
3. right 1 described starting material mixing time is 1-3 minute, and mixing time is 5-10 minute behind the adding additives.
4. right 1 described binding agent is the compound binding agent of organic-inorganic that 40% sodium silicate aqueous solution (A) 85-100% and 10% polyacrylic acid sodium water solution (B) 0-15% form.
5. right 1 described low temperature, hyperthermia drying system are respectively: dried 30-60 minute for 100-120 ℃, dried 30-60 minute for 480-520 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172841XA CN102002583B (en) | 2009-09-03 | 2009-09-03 | Palletizing method of iron ore powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172841XA CN102002583B (en) | 2009-09-03 | 2009-09-03 | Palletizing method of iron ore powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102002583A true CN102002583A (en) | 2011-04-06 |
| CN102002583B CN102002583B (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910172841XA Expired - Fee Related CN102002583B (en) | 2009-09-03 | 2009-09-03 | Palletizing method of iron ore powder |
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| CN (1) | CN102002583B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789759A (en) * | 2014-01-16 | 2015-07-22 | 河南省远征冶金科技有限公司 | Metallurgical iron-containing powder material resource utilization method |
| CN112867804A (en) * | 2018-08-16 | 2021-05-28 | 宾汀解决有限公司 | Binder formulation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2198940C1 (en) * | 2001-07-03 | 2003-02-20 | Закрытое акционерное общество "Консультационная компания "КОНВЕСТ" | Method of production of briquettes from finely- dispersed oxides of metals |
| CN1244708C (en) * | 2004-03-04 | 2006-03-08 | 北京金胜友冶金新技术开发有限责任公司 | Preparation method for making block of dust mud of smelting steel by high pressure and cold solidifing |
| JP4887728B2 (en) * | 2005-10-21 | 2012-02-29 | 日新製鋼株式会社 | Granulation method of sintering raw material |
-
2009
- 2009-09-03 CN CN200910172841XA patent/CN102002583B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789759A (en) * | 2014-01-16 | 2015-07-22 | 河南省远征冶金科技有限公司 | Metallurgical iron-containing powder material resource utilization method |
| CN112867804A (en) * | 2018-08-16 | 2021-05-28 | 宾汀解决有限公司 | Binder formulation |
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| Publication number | Publication date |
|---|---|
| CN102002583B (en) | 2012-07-25 |
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Granted publication date: 20120725 Termination date: 20130903 |