CN102002583B - Palletizing method of iron ore powder - Google Patents
Palletizing method of iron ore powder Download PDFInfo
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- CN102002583B CN102002583B CN200910172841XA CN200910172841A CN102002583B CN 102002583 B CN102002583 B CN 102002583B CN 200910172841X A CN200910172841X A CN 200910172841XA CN 200910172841 A CN200910172841 A CN 200910172841A CN 102002583 B CN102002583 B CN 102002583B
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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, get into 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 to make the group's nodularization of powdered iron ore and satisfies smelting requirements, and be 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 sticker; The iron powder that also need add 10% iron content 90%, about 380 yuan per ton of this extra increase tooling cost, 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 is unstable.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 gets in the mixing pan by certainweight per-cent (its ratio is confirmed according to various powder iron-holder and to the total iron-holder requirement of pelletizing); Mix to grind after 1-3 minute and add sticker; Mix again to grind to get in 5-10 minute to transmit and take the pelletizing forming mill to; The shaping pelletizing gets into 100-120 ℃ of low temperature oven oven dry 30-60 minute through 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 is prone to realize the flow line large-scale production that production cost is low, at metallurgy industry wide application value is arranged.
Detailed Description Of The Invention
One aspect of the present invention, it is the iron ore powder raw material to be mixed by a certain percentage grind, add sticker and mix stones roller, pelletizing moulding, oven dry that the Technology of a kind of iron ore powder ball nodularization, its process are provided, thus acquisition HS pelletizing.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%, adds powder 50% in the iron content 37.9%, the mud ore deposit 10% of iron content 37.1%; The acquisition iron-holder is 50% mixture after mixed the stone roller; Or, obtaining the mixture of iron-holder 50% by behind the mixed stone roller of other proportioning, it is 1-3 minute that raw material mixes the stone roller time; (2) mixture again adding additives 10-14% mix to grind 5-10 minute; (3) mixture is pressed into pelletizing through the pelletizing shaper, respectively 100-120 ℃ of oven drying at low temperature 30-60 minute, 480-520 ℃ hyperthermia drying 30-60 minute.
Another aspect of the present invention provides the sticker of a kind of iron ore powder ball nodularization, it is characterized in that: sticker is the organic and inorganic compound binding agent that 40% sodium silicate aqueous solution (A) 85-100% and 10% ROHM 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; Get into transmission and take forming mill to, the shaping pelletizing takes 110 ℃ of humidity provinces to through transmission and gets into 500 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the HS 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; Get into transmission and take forming mill to, the shaping pelletizing takes 100 ℃ of humidity provinces to through transmission and gets into 510 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the HS 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; Get into transmission and take forming mill to, the shaping pelletizing takes 110 ℃ of humidity provinces to through transmission and gets into 500 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the HS 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; Get into transmission and take forming mill to, the shaping pelletizing takes 90 ℃ of humidity provinces to through transmission and gets into 490 ℃ of humidity provinces 50 minutes after 50 minutes, promptly obtains the HS 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; Get into transmission and take forming mill to, the shaping pelletizing takes 110 ℃ of humidity provinces to through transmission and gets into 500 ℃ of humidity provinces 40 minutes after 40 minutes, promptly obtains the HS pelletizing.
Claims (2)
1. iron ore powder pelletizing method; Its process is the iron ore powder raw material to be mixed by a certain percentage grind, add the mixed stone roller of sticker, pelletizing moulding, oven dry, thereby obtains the HS pelletizing, and it is characterized in that: one of 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%, mixed stone roller back acquisition iron-holder are 50% mixture, or by behind the mixed stone roller of other proportioning; Obtain the mixture of iron-holder 50%, it is 1-3 minute that raw material mixes the stone roller time; Adding additives 10-14% mixes and ground 5-10 minute again; Mixture is pressed into pelletizing through the pelletizing shaper; Respectively 100-120 ℃ of oven drying at low temperature 30-60 minute, 480-520 ℃ hyperthermia drying 30-60 minute, thereby obtain the HS pelletizing in batches.
2. iron ore powder pelletizing method according to claim 1, wherein said sticker is: 40% sodium silicate aqueous solution 85-100%, 10% ROHM sodium water solution 0-15%, the compound sticker of the organic-inorganic of composition.
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 CN102002583A (en) | 2011-04-06 |
| CN102002583B true CN102002583B (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910172841XA Expired - Fee Related CN102002583B (en) | 2009-09-03 | 2009-09-03 | Palletizing method of iron ore powder |
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Families Citing this family (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 |
| GB201813370D0 (en) * | 2018-08-16 | 2018-10-03 | Binding Solutions Ltd | Binder formulation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004710A1 (en) * | 2001-07-03 | 2003-01-16 | Zakrytoe Aktsionernoe Obschestvo 'konsultatsionnaya Kompania Konvest ' | Method for producing briquettes from finely dispersed metal oxides |
| CN1560286A (en) * | 2004-03-04 | 2005-01-05 | 北京金胜友冶金新技术开发有限责任公 | Preparation method for making block of dust mud of smelting steel by high pressure and cold solidifing |
| CN1952185A (en) * | 2005-10-21 | 2007-04-25 | 栗田工业株式会社 | Pelletizing method of sintering material |
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2009
- 2009-09-03 CN CN200910172841XA patent/CN102002583B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003004710A1 (en) * | 2001-07-03 | 2003-01-16 | Zakrytoe Aktsionernoe Obschestvo 'konsultatsionnaya Kompania Konvest ' | Method for producing briquettes from finely dispersed metal oxides |
| CN1560286A (en) * | 2004-03-04 | 2005-01-05 | 北京金胜友冶金新技术开发有限责任公 | Preparation method for making block of dust mud of smelting steel by high pressure and cold solidifing |
| CN1952185A (en) * | 2005-10-21 | 2007-04-25 | 栗田工业株式会社 | Pelletizing method of sintering material |
Non-Patent Citations (1)
| Title |
|---|
| 周龙等.含铁粉矿球团化制备工艺研究.《金属矿山》.2011,(第1期),57-59、108. * |
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| CN102002583A (en) | 2011-04-06 |
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Granted publication date: 20120725 Termination date: 20130903 |