CN104101695A - Method for detecting comprehensive strength of sinter - Google Patents
Method for detecting comprehensive strength of sinter Download PDFInfo
- Publication number
- CN104101695A CN104101695A CN201410337286.2A CN201410337286A CN104101695A CN 104101695 A CN104101695 A CN 104101695A CN 201410337286 A CN201410337286 A CN 201410337286A CN 104101695 A CN104101695 A CN 104101695A
- Authority
- CN
- China
- Prior art keywords
- sintering deposit
- grade
- unit
- haematite
- calcium ferrite
- 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.)
- Granted
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for detecting the comprehensive strength of sinter and belongs to the technical field of iron-making production. The method comprises the steps as follows: firstly, obtaining the particle size of the sinter through screening, then measuring the volume percent of hematite, the volume percent of magnetite, the volume percent of calcium ferrite and the volume percent of glass phases in the sinter with different size fractions respectively under a microscope, and measuring the hardness value of the hematite, the hardness value of the magnetite, the hardness value of the calcium ferrite and hardness values of the glass phases respectively through a microhardness tester; obtaining the comprehensive strength of the sinter through calculation according to the volume percent of the hematite, the volume percent of the magnetite, the volume percent of the calcium ferrite, the volume percent of the glass phases, the hardness value of the hematite, the hardness value of the magnetite, the hardness value of the calcium ferrite and hardness values of the glass phases. The comprehensive strength of the sinter can be detected according to the content of various minerals in sinter samples, so that the method is more representative.
Description
Technical field
The invention belongs to ironmaking production technical field, particularly a kind of detection method of sintering deposit comprehensive strength.
Background technology
Want one of feed stock for blast furnace as blast furnace main, the intensity of sintering deposit is for smooth operation of furnace, and throughput rate etc. are important all.The intensity of sintering deposit is mostly measured and is evaluated by " sintered ore rotary drum strength " at present, and barrate strength has reflected the cold strength of sintering deposit in blast furnace in macroscopic view.
The intensity of sintering deposit is decided by the intensity of various mineral that forms sintering deposit essentially, the mineral of composition sintering deposit are mainly by haematite, magnetic iron ore, calcium ferrite, and glass equates, the all especially characteristic of self and intensity of these mineral, as higher in the intensity of haematite and calcium ferrite, and glassy phase is frangible, intensity is low.These mineral shared ratio and the intensity of himself in sintering deposit have determined the intensity of sintering deposit jointly.
Simultaneously, the test of the rotary drum of sintering deposit is (as 4kg by numerous sintering deposits traditionally, 8kg) put into rotary drum, rotate after certain hour, take out, determine the size of sinter strength by the ratio of screening >5mm or 6.3mm, because sintering deposit is a kind of non-homogeneous structure, therefore rotary drum test reflection is that a lot of sintering deposits are average, the state of " macroscopic view ", but can not reflect the sinter strength characterizing method of various mineral self-characteristics in sintering deposit, particularly can embody the strength characteristics of sintering deposit, comprehensive in conjunction with " barrate strength ", the cold strength of comprehensive evaluation sintering deposit.In addition, in conventional test methodologies, the rotary drum sample of sintering deposit is formulated in screening ratio by 40.0-25.0mm, 25.0-16.0mm, tri-grades of 16.0-10.0mm, and the sintering deposit of >40mm and <10mm is not included, make testing result can not represent the actual strength level of sintering deposit completely.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of detection method of sintering deposit comprehensive strength, has solved the technical matters that cannot precisely reflect evaluation sinter strength in mineral composition aspect in prior art.
For solving the problems of the technologies described above, the invention provides a kind of detection method of sintering deposit comprehensive strength, comprise the steps:
Step 101: sintering deposit is carried out to sizing, obtain respectively the weight ratio of the shared total sintering deposit of sintering deposit of size fractionated;
Step 102: record respectively under the microscope the volumn concentration of haematite, magnetic iron ore, calcium ferrite and the glassy phase of the sintering deposit of described size fractionated, obtain successively the percent by volume value of the haematite in the sintering deposit of described size fractionated, percent by volume value, the percent by volume value of calcium ferrite and the percent by volume value of glassy phase of magnetic iron ore;
Step 103: utilize microhardness instrument to measure respectively the microhardness of the haematite of the sintering deposit of described size fractionated, magnetic iron ore, calcium ferrite and glassy phase, obtain the hardness number of haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore;
Step 104: according to the hardness number of the hardness number of the hardness number of the haematite in the sintering deposit of the percent by volume value of the percent by volume value of the percent by volume value of the percent by volume value of the haematite in the sintering deposit of described size fractionated, magnetic iron ore, calcium ferrite, glassy phase and described size fractionated, magnetic iron ore, calcium ferrite, the hardness number of glassy phase, calculate the intensity level of the sintering deposit of described size fractionated;
Step 105: according to the intensity level of the weight ratio of the shared total sintering deposit of sintering deposit of described size fractionated and the sintering deposit of described size fractionated, calculate the comprehensive strength of sintering deposit.
Further, the preparation method of described sintering deposit is as follows:
By after sintering deposit polishing, polishing on buffing machine, then stand-by after drying.
Further, described polishing each polishing 20 minutes on 150 orders, 400 orders, 800 orders and 1200 order sand paper respectively;
Further, described polishing time is 20-30 minute.
Further, described drying time is 2 hours, 120 DEG C of bake out temperatures.
Further, the particle diameter of described sintering deposit is 15-20mm.
Further, the method for the described volumn concentration that records respectively under the microscope haematite, magnetic iron ore, calcium ferrite and glassy phase in sintering deposit sample ore comprises the steps:
Step 1011: described sintering deposit sample ore is placed under optical microscope, and camera lens multiple is 500-700 times;
Step 1012: the upper left corner that the camera lens of described optical microscope is moved to described sintering deposit sample ore, then from left to right, progressively move from top to down the camera lens of described optical microscope, record the mineral type of each camera lens drop point, judge that described mineral type is the one in haematite, magnetic iron ore, calcium ferrite and glassy phase, after full 500 measuring point, calculate the percentage composition that obtains respectively described haematite, magnetic iron ore, calcium ferrite and glassy phase.
Further, the described method of utilizing microhardness instrument to measure respectively the microhardness of haematite, magnetic iron ore, calcium ferrite and glassy phase in sintering deposit sample ore comprises the steps:
Step 1021: while measuring glassy phase, the test force of described microhardness instrument is set as to 50gf, measures haematite, magnetic iron ore and calcium ferrite phase time, the test force of described microhardness instrument is set as to 100gf;
Step 1022: the object lens multiplying power of described microhardness instrument, below 500 times, is found to haematite, magnetic iron ore, calcium ferrite and glassy phase in described sintering deposit sample ore, obtain respectively the microhardness point value of described haematite, magnetic iron ore, calcium ferrite and glassy phase;
Step 1023: according to the microhardness point value of multiple described haematite, magnetic iron ore, calcium ferrite and glassy phase, obtain the hardness number of described haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore after averaging method.
Further, the computing method of the intensity level of the sintering deposit of described size fractionated are as follows:
ZQn＝(Wn
H×Yn
H+Wn
M×Yn
M+Wn
S×Yn
S+Wn
G×Yn
G)/100 (1)
Wherein, ZQn is that grade is the comprehensive strength of the sintering deposit of n, and unit is HV; Wn
hfor the percent by volume value of haematite in the grade sintering deposit that is n, unit is %; Wn
mfor the percent by volume value of magnetic iron ore in the grade sintering deposit that is n, unit is %; Wn
sfor the percent by volume value of calcium ferrite in the grade sintering deposit that is n, unit is %; Wn
gfor the percent by volume value of glassy phase in the grade sintering deposit that is n, unit is %; Yn
hfor the hardness number of haematite in the grade sintering deposit that is n, unit is HV; Yn
mfor the hardness number of magnetic iron ore in the grade sintering deposit that is n, unit is HV; Yn
sfor the hardness number of calcium ferrite in the grade sintering deposit that is n, unit is HV; Yn
gfor the hardness number of glassy phase in the grade sintering deposit that is n, unit is HV.
Further, the computing method of the comprehensive strength of described sintering deposit are as follows:
ZQ＝(ZQ
n-1×S
n-1+ZQ
n×S
n+ZQ
n+1×S
n+1)/100 (1)
In formula (1), the comprehensive strength that ZQ is sintering deposit, unit is HV; ZQn-1 is that grade is the comprehensive strength of the sintering deposit of n-1, and unit is HV; Sn-1 is that grade is the weight ratio of the shared total sintering deposit of sintering deposit of n-1, and unit is %; ZQn is that grade is the comprehensive strength of the sintering deposit of n, and unit is HV; Sn is that grade is the weight ratio of the shared total sintering deposit of sintering deposit of n, and unit is %; ZQn+1 is that grade is the comprehensive strength of the sintering deposit of n+1, and unit is HV; Sn+1 is that grade is the weight ratio of the shared total sintering deposit of sintering deposit of n+1, and unit is %.
The detection method of sintering deposit comprehensive strength provided by the invention, obtain the comprehensive strength of sintering deposit according to the microhardness measuring and calculating of the content of various mineral in sintering deposit sample ore and mineral self, can be from reflecting in essence the cold strength of sintering deposit, measured the comprehensive strength of all grade sintering deposits simultaneously, more representative compared with classic method.
Brief description of the drawings
The detection method process step figure of the sintering deposit comprehensive strength that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Referring to Fig. 1, the detection method of a kind of sintering deposit comprehensive strength that the embodiment of the present invention provides, comprises the steps:
Step 101: sintering deposit is carried out to sizing, obtain respectively the weight ratio of the shared total sintering deposit of sintering deposit of size fractionated;
Step 102: record respectively under the microscope the volumn concentration of haematite, magnetic iron ore, calcium ferrite and the glassy phase of the sintering deposit of size fractionated, obtain successively the percent by volume value of the haematite in the sintering deposit of size fractionated, percent by volume value, the percent by volume value of calcium ferrite and the percent by volume value of glassy phase of magnetic iron ore;
Step 103: utilize microhardness instrument to measure respectively the microhardness of the haematite of the sintering deposit of size fractionated, magnetic iron ore, calcium ferrite and glassy phase, obtain the hardness number of haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore;
Step 104: according to the hardness number of the hardness number of the hardness number of the haematite in the sintering deposit of the percent by volume value of the percent by volume value of the percent by volume value of the percent by volume value of the haematite in the sintering deposit of size fractionated, magnetic iron ore, calcium ferrite, glassy phase and described size fractionated, magnetic iron ore, calcium ferrite, the hardness number of glassy phase, calculate the intensity level of the sintering deposit of size fractionated;
Step 105: according to the intensity level of the weight ratio of the shared total sintering deposit of sintering deposit of size fractionated and the sintering deposit of size fractionated, calculate the comprehensive strength of sintering deposit.
In the embodiment of the present invention, a kind of concrete detection method of sintering deposit comprehensive strength is provided, comprise the steps:
Step 201: sample preparation, prepare in embodiments of the present invention four sintering deposit sample ores;
Step 2011: by sintering deposit sample each polishing 20 minutes on 150 orders, 400 orders, 800 orders and 1200 order sand paper respectively, guarantee to differentiate clearly various mineral in sintering deposit under optical microscope;
Step 2012: by the sample of having polished polishing on buffing machine, polishing time, between 20-30 minute, is guaranteed to differentiate clearly various mineral in sintering deposit under optical microscope;
Step 2013: wait until follow-up test after polished sample is dried in baking oven.Drying time is 2 hours, and 120 DEG C of temperature guarantee that the moisture in sample is all dried discharge;
Step 202: the volumn concentration that records respectively haematite, magnetic iron ore, calcium ferrite and glassy phase in size fractionated sintering deposit under optical microscope, obtain the percent by volume value of haematite, percent by volume value, the percent by volume value of calcium ferrite and the percent by volume value of glassy phase of magnetic iron ore, be designated as respectively W
h, W
m, W
sand W
g, wherein, the particle diameter of sintering deposit sample ore is 15-20mm, in embodiments of the present invention, carries out sizing, obtains >40mm, 40-25mm, 25-16mm, 16-10mm, 10-5mm and <5mm be totally six grade sintering deposits;
Step 2021: sintering deposit is placed under optical microscope, and camera lens multiple is 500-700 times;
Step 2022: the upper left corner that the camera lens of optical microscope is moved to sintering deposit sample ore, then from left to right, the microscopical camera lens of mobile optical progressively from top to down, record the mineral type of each camera lens drop point, judge that mineral type is the one in haematite, magnetic iron ore, calcium ferrite and glassy phase, after full 500 measuring point, calculate the percentage composition that obtains respectively haematite, magnetic iron ore, calcium ferrite and glassy phase, concrete measurement result is in table 1:
Table 1
Step 203: utilize microhardness instrument to measure respectively the microhardness of haematite, magnetic iron ore, calcium ferrite and glassy phase in size fractionated sintering deposit sample ore, obtain the hardness number of haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore, be designated as respectively Y
h, Y
m, Y
sand Y
g;
Step 2031: while measuring glassy phase, the test force of microhardness instrument is set as to 50gf, measures haematite, magnetic iron ore and calcium ferrite phase time, the test force of microhardness instrument is set as to 100gf;
Step 2032: the object lens multiplying power of microhardness instrument, below 500 times, is found to haematite, magnetic iron ore, calcium ferrite and glassy phase in sintering deposit sample ore, obtain respectively the microhardness point value of haematite, magnetic iron ore, calcium ferrite and glassy phase;
Step 2033: according to the microhardness point value of multiple haematite, magnetic iron ore, calcium ferrite and glassy phase, after averaging method, obtain the hardness number of haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore, concrete measurement result is in table 2:
| Sintering deposit grade | Haematite | Magnetic iron ore | Calcium ferrite | Glassy phase |
| >40mm | 916.84 | 739.93 | 848.88 | 620.39 |
| 40-25mm | 786.90 | 666.74 | 755.88 | 586.05 |
| 25-16mm | 768.76 | 657.92 | 741.96 | 577.68 |
| 16-10mm | 862.94 | 730.43 | 805.00 | 545.18 |
| 10-5mm | 886.32 | 692.36 | 752.98 | 563.54 |
| <5mm | 896.31 | 681.84 | 805.47 | 559.52 |
Step 204: according to the hardness number of the hardness number of the hardness number of the haematite in the sintering deposit of the percent by volume value of the percent by volume value of the percent by volume value of the percent by volume value of the haematite in the sintering deposit of size fractionated, magnetic iron ore, calcium ferrite, glassy phase and size fractionated, magnetic iron ore, calcium ferrite, the hardness number of glassy phase, calculate the intensity level of the sintering deposit of size fractionated;
Wherein, the computing method of the intensity level of the sintering deposit of size fractionated are as follows:
ZQn＝(Wn
H×Yn
H+Wn
M×Yn
M+Wn
S×Yn
S+Wn
G×Yn
G)/100 (1)
Wherein, ZQn is that grade is the comprehensive strength of the sintering deposit of n, and unit is HV; Wn
hfor the percent by volume value of haematite in the grade sintering deposit that is n, unit is %; Wn
mfor the percent by volume value of magnetic iron ore in the grade sintering deposit that is n, unit is %; Wn
sfor the percent by volume value of calcium ferrite in the grade sintering deposit that is n, unit is %; Wn
gfor the percent by volume value of glassy phase in the grade sintering deposit that is n, unit is %; Yn
hfor the hardness number of haematite in the grade sintering deposit that is n, unit is HV; Yn
mfor the hardness number of magnetic iron ore in the grade sintering deposit that is n, unit is HV; Yn
sfor the hardness number of calcium ferrite in the grade sintering deposit that is n, unit is HV; Yn
gfor the hardness number of glassy phase in the grade sintering deposit that is n, unit is HV.
In embodiments of the present invention, each concrete outcome is in table 3, wherein
ZQ40＝(W40
H×Y40
H+W40
M×Y40
M+W40
S×Y40
S+W40
G×Y40
G)/100 (1)
Wherein, ZQ40 is the comprehensive strength of >40mm grade sintering deposit, and unit is HV; W40
hfor the percent by volume value of haematite in >40mm grade sintering deposit, unit is %; W40
mfor the percent by volume value of magnetic iron ore in >40mm grade sintering deposit, unit is %; W40
sfor the percent by volume value of calcium ferrite in >40mm grade sintering deposit, unit is %; W40
gfor the percent by volume value of glassy phase in >40mm grade sintering deposit, unit is %; Y40
hfor the hardness number of haematite in >40mm grade sintering deposit, unit is HV; Y40
mfor the hardness number of magnetic iron ore in >40mm grade sintering deposit, unit is HV; Y40
sfor the hardness number of calcium ferrite in >40mm grade sintering deposit, unit is HV; Y40
gfor the hardness number of glassy phase in >40mm grade sintering deposit, unit is HV.
ZQ25＝(W25
H×Y25
H+W25
M×Y25
M+W25
S×Y25
S+W25
G×Y25
G)/100(2)
Wherein, ZQ25 is the comprehensive strength of 40-25mm grade sintering deposit, and unit is HV; W25
hfor the percent by volume value of haematite in 40-25mm grade sintering deposit, unit is %; W25
mfor the percent by volume value of magnetic iron ore in 40-25mm grade sintering deposit, unit is %; W25
sfor the percent by volume value of calcium ferrite in 40-25mm grade sintering deposit, unit is %; W25
gfor the percent by volume value of glassy phase in 40-25mm grade sintering deposit, unit is %; Y25
hfor the hardness number of haematite in 40-25mm grade sintering deposit, unit is HV; Y25
mfor the hardness number of magnetic iron ore in 40-25mm grade sintering deposit, unit is HV; Y25
sfor the hardness number of calcium ferrite in 40-25mm grade sintering deposit, unit is HV; Y25
gfor the hardness number of glassy phase in 40-25mm grade sintering deposit, unit is HV.
ZQ16＝(W16
H×Y16
H+W16
M×Y16
M+W16
S×Y16
S+W16
G×Y16
G)/100(3)
Wherein, ZQ16 is the comprehensive strength of 25-16mm grade sintering deposit, and unit is HV; W16H is the percent by volume value of haematite in 25-16mm grade sintering deposit, and unit is %; W16
mfor the percent by volume value of magnetic iron ore in 25-16mm grade sintering deposit, unit is %; W16
sfor the percent by volume value of calcium ferrite in 25-16mm grade sintering deposit, unit is %; W16
gfor the percent by volume value of glassy phase in 25-16mm grade sintering deposit, unit is %; Y16
hfor the hardness number of haematite in 25-16mm grade sintering deposit, unit is HV; Y16
mfor the hardness number of magnetic iron ore in 25-16mm grade sintering deposit, unit is HV; Y16
sfor the hardness number of calcium ferrite in 25-16mm grade sintering deposit, unit is HV; Y16
gfor the hardness number of glassy phase in 25-16mm grade sintering deposit, unit is HV.
ZQ10＝(W10
H×Y10
H+W10
M×Y10
M+W10
S×Y10
S+W10
G×Y10
G)/100 (4)
Wherein, ZQ10 is the comprehensive strength of 16-10mm grade sintering deposit, and unit is HV; W10
hfor the percent by volume value of haematite in 16-10mm grade sintering deposit, unit is %; W10
mfor the percent by volume value of magnetic iron ore in 16-10mm grade sintering deposit, unit is %; W10
sfor the percent by volume value of calcium ferrite in 16-10mm grade sintering deposit, unit is %; W10
gfor the percent by volume value of glassy phase in 16-10mm grade sintering deposit, unit is %; Y10
hfor the hardness number of haematite in 16-10mm grade sintering deposit, unit is HV; Y10
mfor the hardness number of magnetic iron ore in 16-10mm grade sintering deposit, unit is HV; Y10
sfor the hardness number of calcium ferrite in 16-10mm grade sintering deposit, unit is HV; Y10
gfor the hardness number of glassy phase in 16-10mm grade sintering deposit, unit is HV.
ZQ5＝(W5
H×Y5
H+W5
M×Y5
M+W5
S×Y5
S+W5
G×Y5
G)/100 (5)
Wherein, ZQ5 is the comprehensive strength of 10-5mm grade sintering deposit, and unit is HV; W5
hfor the percent by volume value of haematite in 10-5mm grade sintering deposit, unit is %; W5
mfor the percent by volume value of magnetic iron ore in 10-5mm grade sintering deposit, unit is %; W5
sfor the percent by volume value of calcium ferrite in 10-5mm grade sintering deposit, unit is %; W5
gfor the percent by volume value of glassy phase in 10-5mm grade sintering deposit, unit is %; Y5
hfor the hardness number of haematite in 10-5mm grade sintering deposit, unit is HV; Y5
mfor the hardness number of magnetic iron ore in 10-5mm grade sintering deposit, unit is HV; Y5
sfor the hardness number of calcium ferrite in 10-5mm grade sintering deposit, unit is HV; Y5
gfor the hardness number of glassy phase in 10-5mm grade sintering deposit, unit is HV.
ZQ0＝(W0
H×Y0
H+W0
M×Y0
M+W0
S×Y0
S+W0
G×Y0
G)/100 (6)
Wherein, ZQ0 is the comprehensive strength of <5mm grade sintering deposit, and unit is HV; W0
hfor the percent by volume value of haematite in <5mm grade sintering deposit, unit is %; W0
mfor the percent by volume value of magnetic iron ore in <5mm grade sintering deposit, unit is %; W0
sfor the percent by volume value of calcium ferrite in <5mm grade sintering deposit, unit is %; W0
gfor the percent by volume value of glassy phase in <5mm grade sintering deposit, unit is %; Y0
hfor the hardness number of haematite in <5mm grade sintering deposit, unit is HV; Y0
mfor the hardness number of magnetic iron ore in <5mm grade sintering deposit, unit is HV; Y0
sfor the hardness number of calcium ferrite in <5mm grade sintering deposit, unit is HV; Y0
gfor the hardness number of glassy phase in <5mm grade sintering deposit, unit is HV.
Table 3
Step 205: according to the intensity level of the weight ratio of the shared total sintering deposit of sintering deposit of size fractionated and the sintering deposit of size fractionated, calculate the comprehensive strength of sintering deposit.
Wherein, in embodiments of the present invention, the comprehensive strength ZQ of sintering deposit is as follows:
ZQ＝(ZQ40×S40+ZQ25×S25+ZQ16×S16+ZQ10×S10+ZQ5×S5+ZQ0×S0)/100
＝(830.68×11.73+730.94×17.85+711.60×13.04+775.74×18.80+746.85×20.00+761.46×18.59)/100
＝757.47
Wherein, the comprehensive strength that ZQ is sintering deposit, unit is HV; S40 is >40mm grade sintering deposit proportion, and unit is %; S25 is 40-25mm grade sintering deposit proportion, and unit is %; S16 is 25-16mm grade sintering deposit proportion, and unit is %; S10 is 16-10mm grade sintering deposit proportion, and unit is %; S5 is 10-5mm grade sintering deposit proportion, and unit is %; S0 is <5mm grade sintering deposit proportion, and unit is %.
For comparing the test result of sintering deposit comprehensive strength detection method and classic method, use two kinds of detection methods respectively unified sintering deposit sample to be carried out to parallel testing 10 times, test result is as shown in table 4.Because sintering deposit comprehensive strength testing process has been considered all grade sintering deposits, therefore more can reflect the real strength level of sintering deposit compared with classic method, testing result is also more stable.
Table 4
Therefore, the detection method of the sintering deposit comprehensive strength that the embodiment of the present invention provides, obtain the comprehensive strength of sintering deposit according to the microhardness measuring and calculating of the content of various mineral in sintering deposit sample ore and mineral self, can be from reflecting in essence the cold strength of sintering deposit, measured the comprehensive strength of all grade sintering deposits simultaneously, more representative compared with classic method.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a detection method for sintering deposit comprehensive strength, is characterized in that, comprises the steps:
Step 101: sintering deposit is carried out to sizing, obtain respectively the weight ratio of the shared total sintering deposit of sintering deposit of size fractionated;
Step 102: record respectively under the microscope the volumn concentration of haematite, magnetic iron ore, calcium ferrite and the glassy phase of the sintering deposit of described size fractionated, obtain successively the percent by volume value of the haematite in the sintering deposit of described size fractionated, percent by volume value, the percent by volume value of calcium ferrite and the percent by volume value of glassy phase of magnetic iron ore;
Step 103: utilize microhardness instrument to measure respectively the microhardness of the haematite of the sintering deposit of described size fractionated, magnetic iron ore, calcium ferrite and glassy phase, obtain the hardness number of haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore;
Step 104: according to the hardness number of the hardness number of the hardness number of the haematite in the sintering deposit of the percent by volume value of the percent by volume value of the percent by volume value of the percent by volume value of the haematite in the sintering deposit of described size fractionated, magnetic iron ore, calcium ferrite, glassy phase and described size fractionated, magnetic iron ore, calcium ferrite, the hardness number of glassy phase, calculate the intensity level of the sintering deposit of described size fractionated;
Step 105: according to the intensity level of the weight ratio of the shared total sintering deposit of sintering deposit of described size fractionated and the sintering deposit of described size fractionated, calculate the comprehensive strength of sintering deposit.
2. detection method according to claim 1, is characterized in that, the preparation method of described sintering deposit is as follows:
By after sintering deposit polishing, polishing on buffing machine, then stand-by after drying.
3. detection method according to claim 2, is characterized in that, described polishing is each polishing 20 minutes on 150 orders, 400 orders, 800 orders and 1200 order sand paper respectively.
4. detection method according to claim 2, is characterized in that, described polishing time is 20-30 minute.
5. detection method according to claim 2, is characterized in that, described drying time is 2 hours, 120 DEG C of bake out temperatures.
6. detection method according to claim 1, is characterized in that, the particle diameter of described sintering deposit is 15-20mm.
7. detection method according to claim 1, is characterized in that, the method for the described volumn concentration that records respectively under the microscope haematite, magnetic iron ore, calcium ferrite and glassy phase in sintering deposit sample ore comprises the steps:
Step 1011: described sintering deposit sample ore is placed under optical microscope, and camera lens multiple is 500-700 times;
Step 1012: the upper left corner that the camera lens of described optical microscope is moved to described sintering deposit sample ore, then from left to right, progressively move from top to down the camera lens of described optical microscope, record the mineral type of each camera lens drop point, judge that described mineral type is the one in haematite, magnetic iron ore, calcium ferrite and glassy phase, after full 500 measuring point, calculate the percentage composition that obtains respectively described haematite, magnetic iron ore, calcium ferrite and glassy phase.
8. detection method according to claim 1, is characterized in that, the described method of utilizing microhardness instrument to measure respectively the microhardness of haematite, magnetic iron ore, calcium ferrite and glassy phase in sintering deposit sample ore comprises the steps:
Step 1021: while measuring glassy phase, the test force of described microhardness instrument is set as to 50gf, measures haematite, magnetic iron ore and calcium ferrite phase time, the test force of described microhardness instrument is set as to 100gf;
Step 1022: the object lens multiplying power of described microhardness instrument, below 500 times, is found to haematite, magnetic iron ore, calcium ferrite and glassy phase in described sintering deposit sample ore, obtain respectively the microhardness point value of described haematite, magnetic iron ore, calcium ferrite and glassy phase;
Step 1023: according to the microhardness point value of multiple described haematite, magnetic iron ore, calcium ferrite and glassy phase, obtain the hardness number of described haematite, hardness number, the hardness number of calcium ferrite and the hardness number of glassy phase of magnetic iron ore after averaging method.
9. detection method according to claim 1, is characterized in that, the computing method of the intensity level of the sintering deposit of described size fractionated are as follows:
ZQn＝(Wn
H×Yn
H+Wn
M×Yn
M+Wn
S×Yn
S+Wn
G×Yn
G)/100 (1)
Wherein, ZQn is that grade is the comprehensive strength of the sintering deposit of n, and unit is HV; WnH is that grade is the percent by volume value of haematite in the sintering deposit of n, and unit is %; Wn
mfor the percent by volume value of magnetic iron ore in the grade sintering deposit that is n, unit is %; Wn
sfor the percent by volume value of calcium ferrite in the grade sintering deposit that is n, unit is %; Wn
gfor the percent by volume value of glassy phase in the grade sintering deposit that is n, unit is %; Yn
hfor the hardness number of haematite in the grade sintering deposit that is n, unit is HV; Yn
mfor the hardness number of magnetic iron ore in the grade sintering deposit that is n, unit is HV; Yn
sfor the hardness number of calcium ferrite in the grade sintering deposit that is n, unit is HV; Yn
gfor the hardness number of glassy phase in the grade sintering deposit that is n, unit is HV.
10. detection method according to claim 9, is characterized in that, the computing method of the comprehensive strength of described sintering deposit are as follows:
ZQ＝(ZQ
n-1×S
n-1+ZQ
n×S
n+ZQ
n+1×S
n+1)/100 (1)
In formula (1), the comprehensive strength that ZQ is sintering deposit, unit is HV; ZQ
n-1for grade is
n-1the comprehensive strength of sintering deposit, unit is HV; S
n-1for the weight ratio of the grade shared total sintering deposit of sintering deposit that is n-1, unit is %; ZQ
nfor the comprehensive strength of the grade sintering deposit that is n, unit is HV; S
nfor the weight ratio of the grade shared total sintering deposit of sintering deposit that is n, unit is %; ZQ
n+1for the comprehensive strength of the grade sintering deposit that is n+1, unit is HV; S
n+1for the weight ratio of the grade shared total sintering deposit of sintering deposit that is n+1, unit is %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337286.2A CN104101695B (en) | 2014-07-15 | 2014-07-15 | A kind of detection method of sintering deposit comprehensive strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337286.2A CN104101695B (en) | 2014-07-15 | 2014-07-15 | A kind of detection method of sintering deposit comprehensive strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104101695A true CN104101695A (en) | 2014-10-15 |
| CN104101695B CN104101695B (en) | 2015-09-30 |
Family
ID=51670016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410337286.2A Active CN104101695B (en) | 2014-07-15 | 2014-07-15 | A kind of detection method of sintering deposit comprehensive strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104101695B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466930A (en) * | 2015-12-04 | 2016-04-06 | 武汉钢铁(集团)公司 | Method for determining calcium ferrite content on basis of sinter microscopic images |
| CN109047024A (en) * | 2018-06-27 | 2018-12-21 | 山东钢铁股份有限公司 | A kind of iron ore material classification determination method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809579A (en) * | 2012-07-23 | 2012-12-05 | 辽宁科技大学 | Method for detecting high-temperature mineralization characteristic of sintered iron ores |
| CN103757165A (en) * | 2014-02-11 | 2014-04-30 | 东北大学 | Comprehensive valuable component utilization method of blast-furnace smelting of high iron bauxite |
-
2014
- 2014-07-15 CN CN201410337286.2A patent/CN104101695B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809579A (en) * | 2012-07-23 | 2012-12-05 | 辽宁科技大学 | Method for detecting high-temperature mineralization characteristic of sintered iron ores |
| CN103757165A (en) * | 2014-02-11 | 2014-04-30 | 东北大学 | Comprehensive valuable component utilization method of blast-furnace smelting of high iron bauxite |
Non-Patent Citations (3)
| Title |
|---|
| 沈茂森: "包钢第三代烧结矿强度研究", 《包钢科技》 * |
| 王斌: "提高烧结矿强度 改善粒度组成", 《南钢科技与管理》 * |
| 魏鑫: "提高烧结矿强度 改善烧结矿粒度组成", 《南钢科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466930A (en) * | 2015-12-04 | 2016-04-06 | 武汉钢铁(集团)公司 | Method for determining calcium ferrite content on basis of sinter microscopic images |
| CN109047024A (en) * | 2018-06-27 | 2018-12-21 | 山东钢铁股份有限公司 | A kind of iron ore material classification determination method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104101695B (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ren et al. | Suitable parameter choice on quantitative morphology of A549 cell in epithelial–mesenchymal transition | |
| CN101718720B (en) | Method for detecting content of carborundum impurities by applying X-ray fluorescent spectrometry | |
| CN105734276A (en) | Comprehensive assessment method and comprehensive assessment system for economical efficiency of iron ores for blast furnace process | |
| CN104101695B (en) | A kind of detection method of sintering deposit comprehensive strength | |
| CN103499634A (en) | Rapid detection method and device for ferrous oxide in sintered ores | |
| WO2021017592A1 (en) | Method for measuring water insoluble substances in sodium humate | |
| CN106770296B (en) | A kind of four ball friction tests mill spot image polishing scratch deflection automatic measuring method | |
| CN102636412A (en) | Method for detecting leveling property of battery slurry | |
| CN102854210A (en) | X fluorescence analysis method of iron ores | |
| CN103900941B (en) | A kind of characterizing method of rutile phase titanium dioxide particles sintering degree | |
| CN106053503A (en) | Iron ore sintering method and quantitative characterization method of mineral phase contents | |
| CN114496107A (en) | Method for sintering ore blending based on liquid phase fluidity index of uniformly mixed ore | |
| CN110895280A (en) | Immune score for predicting nasopharyngeal carcinoma metastasis and application thereof | |
| CN102305749A (en) | Method for quickly determining content of Fe3O4 in minerals | |
| Sousa et al. | Evaluation of texture distribution during the industrial polishing process of porcelain stoneware tiles | |
| CN107460305A (en) | A kind of design method of iron ore concentrate | |
| CN109443967B (en) | Method for evaluating stability of steel slag aggregate | |
| CN105510181B (en) | A kind of method of the quick full Iron grade of detection hematite concentrate | |
| CN105116266B (en) | A kind of band center pillar core inductance automatic sorting instrument | |
| CN109855988A (en) | A kind of measuring method entering furnace pellet/pelletizing drop strength for refining lead skim | |
| Yao et al. | Study on liquid phase formation and fluidity of iron ores | |
| Bückner et al. | Extended analyses of iron ore sinter by image processing | |
| CN205879677U (en) | Metallurgical dropping strength detection device of greenball group | |
| CN105300795A (en) | Method for detecting steel slag product stability | |
| CN101832917A (en) | Method for measuring arsenic in sulfate slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |
|
| CP01 | Change in the name or title of a patent holder |