CN101597659A - Simulation basic metal is at the test method and the device thereof of blast furnace circulating enrichment discipline - Google Patents
Simulation basic metal is at the test method and the device thereof of blast furnace circulating enrichment discipline Download PDFInfo
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- CN101597659A CN101597659A CNA2009100881431A CN200910088143A CN101597659A CN 101597659 A CN101597659 A CN 101597659A CN A2009100881431 A CNA2009100881431 A CN A2009100881431A CN 200910088143 A CN200910088143 A CN 200910088143A CN 101597659 A CN101597659 A CN 101597659A
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- furnace
- temperature
- blast furnace
- alkali metal
- crucible
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- 229910052728 basic metal Inorganic materials 0.000 title claims abstract description 26
- 150000003818 basic metals Chemical class 0.000 title claims abstract description 26
- 238000004088 simulation Methods 0.000 title claims abstract description 7
- 238000010998 test method Methods 0.000 title abstract description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 19
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 18
- 239000003034 coal gas Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000013461 design Methods 0.000 claims abstract description 5
- 230000035484 reaction time Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 15
- 238000004458 analytical method Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 241000209456 Plumbago Species 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 4
- 239000004615 ingredient Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000002441 X-ray diffraction Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000003513 alkali Substances 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- -1 alkali metal cyanide Chemical class 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
A kind of test method and device thereof of simulating basic metal at the blast furnace circulating enrichment discipline belongs to technical field of blast furnace ironmaking.This device is designed to three-stage heating furnace, has the alkali metal vapour generating unit, the gas reduction protective atmosphere.Put alkali metal source into the alkali metal vapour generating unit, the furnace charge of packing into separates with mesh screen between the furnace charge of differing temps band, begins heating after the sealing, and ventilating coal gas after temperature reaches 300～500 ℃ guarantees reducing atmosphere.Temperature utilizes the alkali metal vapour of the decomposition generation of alkaline carbonate to carry out simulated experiment after rising to design temperature.Reaction times is 2～6 hours, after reaction finishes, cooling, stop the supple of gas or steam, after being cooled to room temperature, take out each section furnace charge and carry out chemical ingredients and XRD analysis, can obtain alkali-metal enriching quantity and occurrence form under the differing temps band, simple and reliable simulation the circulation enrichment discipline of basic metal under the differing temps band of blast furnace top.
Description
Technical field
The invention belongs to technical field of blast furnace ironmaking, a kind of test method and device thereof of simulating basic metal at the blast furnace circulating enrichment discipline particularly is provided.
Background technology
Can carry in the furnace charge into a certain amount of alkali metal compound, in blast furnace, top, the basic metal that enters blast furnace with complicated silicate form is very stable, after they enter the high-temperature zone, will reduction reaction take place and be reduced to alkali metal vapour, carrying alkali metal vapour, the blast furnace gas of alkali metal cyanide and alkaline carbonate is in moving process from bottom to top, entrained above-mentioned alkali compound can be deposited on liner and the furnace charge, have little time reaction and sedimentary basic metal and then discharge from furnace roof with coal gas and stove dirt, most of unreduced alkalimetal silicate is discharged with slag.
The basic metal that is deposited on the furnace lining can infiltrate bricking by the hole by bricking, and it is corroded, and is deposited on will volatilize again after basic metal on the furnace charge arrives the blast furnace high-temperature zone.Evaporable basic metal enters the coal gas stream that moves upward again, and this process continuously moves in circles, and finally causes alkali-metal enrichment, and then the serious harm blast furnace is produced.
Dissection discovers that blast furnace can be divided into 5 zones (being lump zone, cohesive zone, dropping zone, zone of stagnation and zone of combustion) according to blast furnace, and it reacts also different to basic metal at different positions, and occurrence form is also all different with enriching quantity.For the research method of basic metal, mainly be method at present by blast furnace dissection and calculation of thermodynamics at the blast furnace circulating enrichment, and in these two kinds of methods, though the former reliably can not arbitrarily carry out; Though the latter calculates simple, lack reliability.
Summary of the invention
The object of the present invention is to provide a kind of test method and device thereof of simulating basic metal at the blast furnace circulating enrichment discipline, mainly be that device has been simulated the serious basic metal of blast furnace harm in blast furnace by experiment, the particularly variation of rule, enriching quantity and the occurrence form of differing temps band cocycle enrichment, harm provides reliable experimental evidence to blast furnace in order to study and to control.
This method and apparatus is simple possible both, has higher experimental reliability again, can directly measure basic metal enriching quantity and occurrence form under the differing temps band.
A kind of method of simulating the circulation enrichment of basic metal on the blast furnace differing temps provided by the invention is specific as follows:
1, a certain amount of alkaline carbonate (K of weighing
2CO
3And Na
2CO
3, its proportioning is decided according to blast furnace basic metal K, Na ratio), put into the basic metal generating unit of stainless steel crucible bottom; Then a certain proportion of blast furnace burden is put into plumbago crucible, the furnace charge between the differing temps band separates with the iron wire mesh screen; At last, with the stainless steel lid of band screw thread crucible is built.
2, the plumbago crucible that furnace charge will be housed places 3 segmentation high temperature resistance furnaces, and each section of process furnace temperature is set at the temperature range of blast furnace lump zone, cohesive zone and dropping zone respectively, and the temperature rise rate with 5～10 ℃/min is heated to design temperature with process furnace.The temperature range of blast furnace lump zone, cohesive zone and dropping zone is respectively 300～500,700～900,1100～1200.
3, ventilating coal gas after temperature reaches 400～500 ℃, flow control is at 0.5～1.0L/min, at air outlet point coal gas.
Pick up counting when 4, each section temperature reaches design temperature, the reaction times is 2～6 hours, begins cooling afterwards, stops ventilation after temperature drops to below 500 ℃.
5, be cooled to room temperature after, open crucible, take out a furnace charge by section, numbering is preserved.
6, each section furnace charge is carried out alkali metal component analysis and XRD material phase analysis.
The inventive system comprises three-stage heating furnace, stainless steel crucible, air outlet, stainless steel crucible cover, one section thermopair, two sections thermopairs, three sections thermopairs, furnace charge, mesh screen, inlet mouth; Alkali metal vapour generation source provides alkali metal vapour, and by gas entry, gas exit feeds coal gas and guarantees furnace reduction atmosphere, furnace burdening in the Stainless Steel Crucible, and the stainless steel mesh screen separates furnace charge, makes it be in the differing temps band.
The present invention by the multistage temperature simulation lump zone, cohesive zone and the dropping zone on blast furnace stack top, and ventilating coal gas simulated the reducing atmosphere in the blast furnace, finally realized the simulated experiment of basic metal in the circulation enrichment on blast furnace stack top.Experimental installation comprises that source, mesh screen etc. take place for three-stage heating furnace, stainless steel crucible, gas inlet and gas exit, alkali metal vapour.
Advantage of the present invention is: method is simple, simulation reliability height, the circulation enrichment provides experimental technique and device on blast furnace top for simulation basic metal, can change simultaneously basic metal amount in the alkali metal generator test basic metal in blast furnace enrichment phase, balance period and row's alkali phase to the destructiveness of furnace charge.
Description of drawings
Fig. 1 is apparatus of the present invention synoptic diagram.Wherein, source 10, inlet mouth 11 take place in three-stage heating furnace 1, stainless steel crucible 2, air outlet 3, stainless steel crucible cover 4, one section thermopair 5, two sections thermopairs 6, three sections thermopairs 7, furnace charge 8, mesh screen 9, alkali metal vapours.
Embodiment:
Embodiment: determine the basic metal amount according to calculating of basic metal load and enrichment degree, this example is the K of 2g
2CO
3Na with 1g
2CO
3Add the pelletizing piece according to the test needs: agglomerate=3: 7, amount to 1000g, join in the stainless steel crucible, separate with mesh screen between the differing temps band, after installing, the crucible cover of band screw thread is built.
Temperature rise rate with 8 ℃/min heats up ventilating coal gas after temperature reaches 500 ℃, insulation reaction 3 hours.Reaction begins to close the process furnace power supply after finishing, the furnace cooling cooling, and each section temperature stops ventilating coal gas after all being reduced to below 500 ℃.After crucible temperature is reduced to room temperature, take out crucible, open crucible cover and take out furnace charge.
Sample presentation carries out chemical ingredients and XRD Physical Property Analysis.
Claims (4)
1, a kind of method of simulating basic metal at blast furnace top differing temps band circulation enrichment discipline is characterized in that simulation steps is as follows:
(1) alkaline carbonate is put into the basic metal generating unit of stainless steel crucible bottom; Then blast furnace burden is put into plumbago crucible, the furnace charge between the differing temps band separates with the iron wire mesh screen;
(2) plumbago crucible that furnace charge will be housed places 3 segmentation high temperature resistance furnaces, and each section of process furnace temperature is set at the temperature range of blast furnace lump zone, cohesive zone and dropping zone respectively, and the temperature rise rate with 5～10 ℃/min is heated to design temperature with process furnace;
(3) ventilating coal gas after temperature reaches 400～500 ℃ ℃, flow control are lighted CO gas at 0.5～1.0L/min in the air outlet, guarantee to be in the crucible reducing atmosphere;
Pick up counting when (4) each section temperature reaches design temperature, the reaction times is 2～6 hours, begins cooling afterwards, stops ventilation after temperature drops to below 500 ℃;
(5) be cooled to room temperature after, open crucible, take out a furnace charge by section, each section furnace charge is carried out alkali metal component analysis and XRD material phase analysis.
2, method according to claim 1 is characterized in that, described alkaline carbonate is K
2CO
3Or Na
2CO
3
3, method according to claim 1 is characterized in that, the temperature range of blast furnace lump zone, cohesive zone and dropping zone is respectively 300～500,700～900,1100～1200.
4, a kind of device of realizing the described method of claim 1, comprise three-stage heating furnace, stainless steel crucible, air outlet, stainless steel crucible cover, one section thermopair, two sections thermopairs, three sections thermopairs, furnace charge, mesh screen, alkali metal vapour generating unit, inlet mouth; It is characterized in that source (10) takes place alkali metal vapour provides alkali metal vapour, by gas entry (11), gas exit (3) feeds coal gas and guarantees furnace reduction atmosphere, the interior furnace burdening of Stainless Steel Crucible (2), stainless steel mesh screen (9) separates furnace charge, makes it be in the differing temps band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100881431A CN101597659B (en) | 2009-07-03 | 2009-07-03 | Test method and device for simulating the circulating enrichment discipline of alkali metal in blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100881431A CN101597659B (en) | 2009-07-03 | 2009-07-03 | Test method and device for simulating the circulating enrichment discipline of alkali metal in blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101597659A true CN101597659A (en) | 2009-12-09 |
| CN101597659B CN101597659B (en) | 2010-10-27 |
Family
ID=41419254
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|---|---|---|---|
| CN2009100881431A Expired - Fee Related CN101597659B (en) | 2009-07-03 | 2009-07-03 | Test method and device for simulating the circulating enrichment discipline of alkali metal in blast furnace |
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| CN (1) | CN101597659B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305803A (en) * | 2011-05-19 | 2012-01-04 | 莱芜钢铁集团有限公司 | Experiment device and method for studying blast furnace hearth and bottom carbon brick annular crack mechanism |
| CN104152611A (en) * | 2014-08-14 | 2014-11-19 | 北京首钢股份有限公司 | Method for reducing alkali metal enrichment in blast furnace |
| CN104316429A (en) * | 2014-09-26 | 2015-01-28 | 北京科技大学 | Method for testing destructive effect and performance impact of alkali metal and zinc vapor to coke |
| CN107016922A (en) * | 2017-06-16 | 2017-08-04 | 重庆科技学院 | A kind of blast furnace simulation demonstrating apparatus |
| CN107190137A (en) * | 2017-04-27 | 2017-09-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | The test method of tank-less tunnel kiln reduction ferrous material is simulated using high temperature resistance furnace |
| CN110136781A (en) * | 2019-04-23 | 2019-08-16 | 武汉科技大学 | The calculation method of alkali metal element enriching quantity in a kind of blast furnace |
| CN110669885A (en) * | 2019-10-09 | 2020-01-10 | 武汉科技大学 | Device and method for simulating enrichment form of zinc or alkali metal at upper part of blast furnace and application of device and method |
| CN110672661A (en) * | 2019-08-27 | 2020-01-10 | 武汉科技大学 | Multifunctional blast furnace harmful element adsorption experiment method and device thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882166B (en) * | 2014-04-03 | 2016-01-20 | 首钢总公司 | Alkali vapor generation rate regulation device |
-
2009
- 2009-07-03 CN CN2009100881431A patent/CN101597659B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305803A (en) * | 2011-05-19 | 2012-01-04 | 莱芜钢铁集团有限公司 | Experiment device and method for studying blast furnace hearth and bottom carbon brick annular crack mechanism |
| CN104152611A (en) * | 2014-08-14 | 2014-11-19 | 北京首钢股份有限公司 | Method for reducing alkali metal enrichment in blast furnace |
| CN104152611B (en) * | 2014-08-14 | 2016-09-14 | 北京首钢股份有限公司 | A kind of method reducing the enrichment of alkali metal in blast furnace |
| CN104316429A (en) * | 2014-09-26 | 2015-01-28 | 北京科技大学 | Method for testing destructive effect and performance impact of alkali metal and zinc vapor to coke |
| CN107190137A (en) * | 2017-04-27 | 2017-09-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | The test method of tank-less tunnel kiln reduction ferrous material is simulated using high temperature resistance furnace |
| CN107190137B (en) * | 2017-04-27 | 2019-09-10 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Utilize the test method of high temperature resistance furnace simulation tank-less tunnel kiln reduction ferrous material |
| CN107016922A (en) * | 2017-06-16 | 2017-08-04 | 重庆科技学院 | A kind of blast furnace simulation demonstrating apparatus |
| CN110136781A (en) * | 2019-04-23 | 2019-08-16 | 武汉科技大学 | The calculation method of alkali metal element enriching quantity in a kind of blast furnace |
| CN110136781B (en) * | 2019-04-23 | 2020-12-18 | 武汉科技大学 | Method for calculating enrichment amount of alkali metal elements in blast furnace |
| CN110672661A (en) * | 2019-08-27 | 2020-01-10 | 武汉科技大学 | Multifunctional blast furnace harmful element adsorption experiment method and device thereof |
| CN110669885A (en) * | 2019-10-09 | 2020-01-10 | 武汉科技大学 | Device and method for simulating enrichment form of zinc or alkali metal at upper part of blast furnace and application of device and method |
| CN110669885B (en) * | 2019-10-09 | 2021-10-12 | 武汉科技大学 | Device and method for simulating enrichment form of zinc or alkali metal at upper part of blast furnace and application of device and method |
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| Publication number | Publication date |
|---|---|
| CN101597659B (en) | 2010-10-27 |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: SHOUGANG Corp. |
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Granted publication date: 20101027 |