CN104294035A - Method for experimental research on pelletizing performance of iron ore powder - Google Patents

Method for experimental research on pelletizing performance of iron ore powder Download PDF

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Publication number
CN104294035A
CN104294035A CN201410583203.8A CN201410583203A CN104294035A CN 104294035 A CN104294035 A CN 104294035A CN 201410583203 A CN201410583203 A CN 201410583203A CN 104294035 A CN104294035 A CN 104294035A
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China
Prior art keywords
iron ore
breeze
represent
granularity
sticking ratio
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CN201410583203.8A
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Chinese (zh)
Inventor
史先菊
李军
冯红云
肖扬
莫亚平
孙庆星
范维国
庞有军
张树华
杨慧
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Wuhan Iron and Steel Group Corp
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Wuhan Iron and Steel Group Corp
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Priority to CN201410583203.8A priority Critical patent/CN104294035A/en
Publication of CN104294035A publication Critical patent/CN104294035A/en
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    • 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
    • C22B1/16—Sintering; Agglomerating

Abstract

The utility model discloses a method for experimental research on pelletizing performance of iron ore powder. The method comprises the following steps: crushing iron ore and screening the crushed iron ore according to the size fraction: using the crushed iron ore with the particle size of 1-3 mm as nuclear particles and using the crushed iron ore with the particle size less than or equal to 0.5 mm as adhesive particles; mixing the nuclear particles and the adhesive particles uniformly; pelleting on a disk machine; baking; classifying the manufactured particles; analyzing and judging the pelletizing performance of manufactured particles according to particle size distribution and an adhesion ratio. Compared with the prior art, the pelleting equipment in the experiment is simple, the operation is easy, the goodness of fit of experiment results and actual production is high, guidance is provided for actual production, the using amount of material in the experiment is less, the comparability is high, a pelletizing mechanism can be judged conveniently during pelleting, factors affecting the pelleting effect can be analyzed, an optimized technical direction is provided for pelleting of a sinter mixture; the adaptability is high, the method can be used for research on pelletizing performance of any iron ore powder and the matching scheme of the iron ore powder can be selected randomly.

Description

A kind of method for experimental study powdered iron ore pellet performance
Technical field
The present invention relates to test method prepared by a kind of agglomerates of sintered pellets, belong to a kind of method for experimental study powdered iron ore pellet performance particularly.
Background technology
The ventilation property of the good bad influence sinter bed of pellet performance of powdered iron ore, has an impact to sintering process, thus affects the every yield and quality of agglomerate and energy consumption index.Understanding the pellet performance of powdered iron ore, take the measure of Intensified support targetedly, is the basis of improving Sintering Operation Index.Therefore, the research in a large number for powdered iron ore pellet performance and Intensified support is had in the same industry.At present, varied to the research method of the pellet performance of powdered iron ore, wherein mainly contain capillary water, the molecular water by measuring powdered iron ore, thus the balling-up calculating powdered iron ore judges, this kind of method is the judging criterion proposed for pelletizing iron ore concentrate, certain reference value is had to fine ore, but cannot situation in complete reaction actual production.Another kind of conventional research means is the quality of research granulating sinter mixture performance of being granulated by drum mixer, regulates mixture granulation performance by means such as adjustment cylinder parameters.This method and actual production closely, but are difficult to find out the basic factor affecting pellet performance, and larger by doses.
Summary of the invention
The object of the present invention is to provide a kind of while understanding iron ore powder pellet performance, understand main balling-up mechanism when granulating, affect the factor of pellet performance, the method for the research powdered iron ore pellet performance of technique direction is provided for optimizing pellet performance.
Realize the measure of above-mentioned purpose:
For a method for experimental study powdered iron ore pellet performance, its step:
1) iron ore is carried out fragmentation sieve fraction: wherein, using granularity be 1 ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1 ~ 3mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:5 ~ 40 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, time controling was at 3 ~ 20 minutes;
4) toast, storing temperature controls be not less than 100 DEG C, and baking time is no less than 2 hours;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
When for single breeze, the calculation formula of sticking ratio:
R single=(W single total-W granulate) ÷ W single total
In formula: R single-represent the sticking ratio of single breeze;
W single total-represent that in single breeze, granularity is-1mm grade gross weight;
W granulate-represent in single breeze rear-1mm grade gross weight of granulating;
Work as R singlebe greater than 70%, illustrate that its wetting ability is excellent; Work as R single40 to being less than 70%, illustrate that its wetting ability is good; Work as R single20 ~ and be less than 40%, illustrate that its wetting ability is general; Work as R singlebe less than 20%, illustrate that its wetting ability is poor;
When coordinating granulation for many mineral breeze, the mode adopting actual sticking ratio and theoretical sticking ratio to carry out com-parison and analysis judges: calculation formula:
R how real=(W many realities are total-W many real granulations) ÷ W many realities are total
In formula: R how real-represent the actual sticking ratio of multiple breeze;
W many realities are total-represent that in multiple breeze, granularity is-1mm grade gross weight;
W many real granulations-represent in multiple breeze rear-1mm grade gross weight of granulating;
R how theoretical=R single A* V a+ R single B* V b+ R single c* V c+
In formula: R how theoretical-represent the theoretical sticking ratio of multiple breeze;
A, B, C-represent different adapted mineral;
V-represent the different ratios shared by adapted mineral;
Judge: work as R how realbe greater than R how theoretical, illustrate that each breeze has the effect of mutually promoting when granulating; When actual sticking ratio is less than theoretical sticking ratio, illustrate that each breeze is in granulation phase mutual inhibition system.
About sticking ratio R singleformula illustrate:
The pellet performance quality of powdered iron ore is determined by the wetting ability of mineral and operating parameters two factors of facility for granulating, when facility for granulating is determined, its operating parameters is fixing, now, powdered iron ore pellet performance is only determined by wetting ability, due to sticking ratio and pellet performance positive correlation, therefore, sticking ratio is only relevant with the wetting ability of mineral; In the present invention, because facility for granulating is multigraph press, device parameter is fixed, therefore the test ore kind of sticking ratio only with selected is relevant.Prove according to a large amount of tests, pass through formula: R single=(W single total-W granulate) ÷ W single totalno matter the value calculated is at simple ore kind or the sticking ratio in the proportioning of many mineral if can representing this kind of iron ore, with W single totaland W granulateirrelevant, become definite value.
The present invention is compared with prior art:
1. test facility for granulating simple, easy handling, experimental result and the actual production goodness of fit greatly, can instruct, and test doses are few to actual production;
2. comparability is strong, can judge balling-up mechanism when granulating easily, and the factor of analyzing influence granulating efficiency, for granulating sinter mixture provides the technique direction of optimization;
3. strong adaptability, can be used for the research of any powdered iron ore pellet performance, powdered iron ore arranging scheme can be selected arbitrarily.
Accompanying drawing explanation
Fig. 1 is the granulation situation of embodiments of the invention 3;
Fig. 2 is the granulation situation of embodiments of the invention 4.
Embodiment
Below the present invention is described in detail:
Embodiment 1
The present embodiment is the pellet performance experimental study to simple ore kind limonite A;
It is for the step of experimental study:
1) limonite A is carried out fragmentation sieve fraction: wherein, using granularity be 1mm ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1 ~ 3mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:10 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, the time was at 5 minutes;
4) toast, storing temperature is 105 DEG C, and baking time is 2.5 hours;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
Known: W single total=5kg, W granulate=0.24kg, and the calculation formula carrying it into that following sticking ratio is:
R single=(W single total-W granulate) ÷ W single total=95.2%
In formula: R single-represent the sticking ratio of brown ocher A;
W single total-represent that in brown ocher A, granularity is-1mm grade gross weight;
W granulate-represent in brown ocher A rear-1mm grade gross weight of granulating;
According to calculation result R singlebe 95.2%, illustrate that its wetting ability of this ore is excellent.
Embodiment 2
The present embodiment adopts the pellet performance case study of single magnetite B:
It is for the step of experimental study:
1) magnetite B is carried out fragmentation sieve fraction: wherein, using granularity be 1mm ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1 ~ 3mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:7 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, the time was at 10 minutes;
4) toast, storing temperature is 110 DEG C, and baking time is 2 hours 20 minutes;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
Known: W single total=5kg, W granulate=2kg, and the calculation formula carrying it into that following sticking ratio is:
R single=(W single total-W granulate) ÷ W single total=60%
In formula: R single-represent the sticking ratio of magnetite powder B;
W single total-represent that in magnetite powder B, granularity is-1mm grade gross weight;
W granulate-represent in magnetite powder B rear-1mm grade gross weight of granulating;
According to calculation result R singlebe 60%, illustrate that its wetting ability of this ore is good.
Embodiment 3
The present embodiment adopts the pellet performance research example of simple ore kind specularite C,
It is for the step of experimental study:
1) kind of a specularite C is carried out fragmentation sieve fraction: wherein, using granularity be 1 ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1 ~ 3mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:7 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, the time was at 15 minutes;
4) toast, storing temperature is 107 DEG C, and baking time is 2 hours 20 minutes;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
Known: W single total=5kg, W granulate=4.25kg, and the calculation formula carrying it into that following sticking ratio is:
R single=(W single total-W granulate) ÷ W single total=15%
In formula: R single-represent the sticking ratio of spiegel breeze C;
W single total-represent that in spiegel breeze C, granularity is-1mm grade gross weight;
W granulate-represent in spiegel breeze C rear-1mm grade gross weight of granulating;
According to calculation result R singlebe 15%, illustrate that its wetting ability of this ore is poor.
Embodiment 4
The present embodiment is ore deposit limonite A and specularite C pellet performance case study,
It is for the step of experimental study:
1) ore deposit limonite A and specularite C is carried out fragmentation sieve fraction: wherein, using granularity be 1 ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1 ~ 3mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:20 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, the time was at 13 minutes;
4) toast, storing temperature is 103 DEG C, and baking time is 2 hours 45 minutes;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
Known: W many realities are total=5kg, W many real granulations=1.53kg, R single Afor the sticking ratio of limonite A provided in embodiment 1, its value is 95.2%; R single Cfor the sticking ratio of specularite C provided in embodiment 3, its value is 15%; The adapted ratio V of limonite A abe 40%, the adapted ratio V of specularite C cbe 60%, and bring in following relevant calculating formulas respectively; Because many ores kind, therefore the mode adopting actual sticking ratio and theoretical sticking ratio to carry out com-parison and analysis judges: calculation formula:
R how real=(W many realities are total-W many real granulations) ÷ W many realities are total=69.4%
R how theoretical=R single A* V a+ R single c* V c=47.1%
Due to R how realbe 69.4 %, R how theoreticalbe 47.1 %, its R how realbe greater than R how theoretical, illustrate that each breeze has the effect of mutually promoting when granulating.Its as seen from Figure 1 limonite A granulate after particle be coin shape, illustrate in A mineral pelletization and take as the leading factor with coalescent balling-up mechanism, in globulation, self intergranular interaction force accounts for leading, and when granulating after mixing with specularite C, due to the impact of specularite C, its balling-up mechanism changes, take as the leading factor with stratification balling-up mechanism, in globulation, mechanical force accounts for leading, thus make the use of mechanical force in pelletization more abundant, the particle surface reactive force that mechanical force is larger with limonite A superposes, and reaches better granulating efficiency.
Embodiment 5
The present embodiment adopts magnetite B and specularite C pellet performance case study,
It is for the step of experimental study:
1) magnetite B and specularite C is carried out fragmentation sieve fraction: wherein, using granularity be 1 ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:20 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, the time was at 13 minutes;
4) toast, storing temperature is 104 DEG C, and baking time is 2 hours 10 minutes;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
Known: W many realities are total=5kg, W many real granulations=4.06kg, R single Bfor the sticking ratio of magnetite in embodiment 2, its value is 60%; R single Cfor the sticking ratio of specularite C in embodiment 3, its value is 15%; The adapted ratio V of ore kind B is 20%, and the adapted ratio V of ore kind C is 80%; Above-mentioned given data is brought into respectively in following relevant calculating formulas; Because many ores kind, therefore the mode adopting actual sticking ratio and theoretical sticking ratio to carry out com-parison and analysis judges: calculation formula:
R how real=(W many realities are total-W many real granulations) ÷ W many realities are total=18.8%
R how theoretical=R single B* V b+ R single c* V c=24%
Due to R how realbe 18.8 %, R how theoreticalbe 24 %, its R how realbe less than R how theoretical, illustrate that each breeze has the effect mutually suppressed when granulating.Particle as seen from Figure 2 after magnetite B granulation is spherical shape, illustrate that B takes as the leading factor with stratification balling-up mechanism, in globulation, mechanical force accounts for leading, and when granulating after mixing with specularite C, due to the impact of the C mineral of balling-up difference, the intergranular contact of magnetite B is tailed off, and well can not adhere to C particle due to the surface reaction forces of B particle, thus when making B and C mixing granulation, serve the effect mutually suppressed.
About sticking ratio R singleformula illustrate:
The pellet performance quality of powdered iron ore is determined by the wetting ability of mineral and operating parameters two factors of facility for granulating, when facility for granulating is determined, its operating parameters is fixing, now, powdered iron ore pellet performance is only determined by wetting ability, due to sticking ratio and pellet performance positive correlation, therefore, sticking ratio is only relevant with the wetting ability of mineral; In the present invention, because facility for granulating is multigraph press, device parameter is fixed, therefore the test ore kind of sticking ratio only with selected is relevant.Prove according to a large amount of tests, pass through formula: R single=(W single total-W granulate) ÷ W single totalno matter the value calculated is at simple ore kind or the sticking ratio in the proportioning of many mineral if can representing this kind of iron ore, with W single totaland W granulateirrelevant, become definite value, therefore in embodiment 4 and embodiment 5, directly by embodiment 1, embodiment 2 and embodiment 3 A, B, C tri-the adhesion ratio calculated of class iron ore directly substitute in the correlation formula of embodiment 4 and embodiment 5 and calculate.
Above-described embodiment is only the best and exemplifies, and is not the restriction to embodiments of the present invention.

Claims (1)

1. for a method for experimental study powdered iron ore pellet performance, its step:
1) iron ore is carried out fragmentation sieve fraction: wherein, using granularity be 1 ~ 3mm as nuclear particle, using granularity≤0.5mm as adhered particles;
2) be that the adhered particles of 1 ~ 3mm nuclear particle and granularity≤0.5mm is carried out being mixed to evenly according to 1:5 ~ 40 by granularity;
3) be placed on multigraph press by the granulation material mixed and granulate, time controling was at 3 ~ 20 minutes;
4) toast, storing temperature controls be not less than 100 DEG C, and baking time is no less than 2 hours;
5) granulated and carried out classification, namely according to being greater than 3mm, 1 ~ 3mm, being less than three kinds of size sortings of 1mm;
6) carry out analysis according to size-grade distribution and sticking ratio to the performance of granulating to judge:
When for single breeze, the calculation formula of sticking ratio:
R single=(W single total-W granulate) ÷ W single total
In formula: R single-represent the sticking ratio of single breeze;
W single total-represent that in single breeze, granularity is-1mm grade gross weight;
W granulate-represent in single breeze rear-1mm grade gross weight of granulating;
Work as R singlebe greater than 70%, illustrate that its wetting ability is excellent; Work as R single40 to being less than 70%, illustrate that its wetting ability is good; Work as R single20 ~ and be less than 40%, illustrate that its wetting ability is general; Work as R singlebe less than 20%, illustrate that its wetting ability is poor;
When coordinating granulation for many mineral breeze, the mode adopting actual sticking ratio and theoretical sticking ratio to carry out com-parison and analysis judges: calculation formula:
R how real=(W many realities are total-W many real granulations) ÷ W many realities are total
In formula: R how real-represent the actual sticking ratio of multiple breeze;
W many realities are total-represent that in multiple breeze, granularity is-1mm grade gross weight;
W many real granulations-represent in multiple breeze rear-1mm grade gross weight of granulating;
R how theoretical=R single A* V a+ R single B* V b+ R single c* V c+
In formula: R how theoretical-represent the theoretical sticking ratio of multiple breeze;
A, B, C-represent different adapted mineral;
V-represent the different ratios shared by adapted mineral;
Judge: work as R how realbe greater than R how theoretical, illustrate that each breeze has the effect of mutually promoting when granulating; When actual sticking ratio is less than theoretical sticking ratio, illustrate that each breeze is in granulation phase mutual inhibition system.
CN201410583203.8A 2014-10-28 2014-10-28 Method for experimental research on pelletizing performance of iron ore powder Pending CN104294035A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104923780A (en) * 2015-06-11 2015-09-23 武汉钢铁(集团)公司 Method for detecting nucleation performance
CN104977252A (en) * 2015-06-30 2015-10-14 武汉钢铁(集团)公司 Method for determining adhesion performance of adhesive particles in iron ore sintered materials
CN105420491A (en) * 2015-11-27 2016-03-23 攀钢集团攀枝花钢钒有限公司 Iron ore sintering method
CN105861817A (en) * 2016-05-18 2016-08-17 武汉钢铁股份有限公司 Method for researching flux distribution state in sintered mixed granulates
CN108760471A (en) * 2018-06-15 2018-11-06 浙江大学 A kind of measurement method and device of the particle adhesion layer shear strength of iron ore sintering
CN111141642A (en) * 2020-01-13 2020-05-12 长沙理工大学 Method for judging granulation selectivity strength among different iron ore powder particles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101570821A (en) * 2009-06-15 2009-11-04 中南大学 Sintering method of high proportion specularite concentrate
CN103572042A (en) * 2013-11-27 2014-02-12 武汉钢铁(集团)公司 Method for preparing sintering mixture by specularite powder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101570821A (en) * 2009-06-15 2009-11-04 中南大学 Sintering method of high proportion specularite concentrate
CN103572042A (en) * 2013-11-27 2014-02-12 武汉钢铁(集团)公司 Method for preparing sintering mixture by specularite powder

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
周传强 等: "铁矿粉制粒特性模糊聚类分析", 《烧结球团》 *
徐南平 主编: "《钢铁冶金实验技术及研究方法》", 31 May 1995 *
李智慧 等: "唐钢司家营精矿粉制粒性能试验研究", 《河北理工大学学报（自然科学版）》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104923780A (en) * 2015-06-11 2015-09-23 武汉钢铁(集团)公司 Method for detecting nucleation performance
CN104977252A (en) * 2015-06-30 2015-10-14 武汉钢铁(集团)公司 Method for determining adhesion performance of adhesive particles in iron ore sintered materials
CN105420491A (en) * 2015-11-27 2016-03-23 攀钢集团攀枝花钢钒有限公司 Iron ore sintering method
CN105861817A (en) * 2016-05-18 2016-08-17 武汉钢铁股份有限公司 Method for researching flux distribution state in sintered mixed granulates
CN105861817B (en) * 2016-05-18 2017-10-24 武汉钢铁有限公司 A kind of method for studying flux distribution in sintered compound granulation
CN108760471A (en) * 2018-06-15 2018-11-06 浙江大学 A kind of measurement method and device of the particle adhesion layer shear strength of iron ore sintering
CN108760471B (en) * 2018-06-15 2019-11-05 浙江大学 A kind of measurement method and device of the particle adhesion layer shear strength of iron ore sintering
CN111141642A (en) * 2020-01-13 2020-05-12 长沙理工大学 Method for judging granulation selectivity strength among different iron ore powder particles

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Application publication date: 20150121