CN101299035B - Iron ore automatic control static state low temperature reduction disintegration test device and test method - Google Patents
Iron ore automatic control static state low temperature reduction disintegration test device and test method Download PDFInfo
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- CN101299035B CN101299035B CN2008101148000A CN200810114800A CN101299035B CN 101299035 B CN101299035 B CN 101299035B CN 2008101148000 A CN2008101148000 A CN 2008101148000A CN 200810114800 A CN200810114800 A CN 200810114800A CN 101299035 B CN101299035 B CN 101299035B
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Abstract
The present invention provides an automatic control static low-temperature reduction pulverization test device of iron ore and a testing method thereof, and belongs to a technical field of the reduction pulverization of iron ore. An integrated multiple-area reduction tube is designed out. The reduction tube is simultaneously placed with a plurality of samples. Furthermore the temperature, the heattransmission and reduction gas flow of each sample area are uniform and consistent in the test process. The reduction pulverization test uses a gas mixture which is composed of three gases of CO, CO2and N2 and accurately distributes three gases with an automatic gas distributing device. Then the gas mixture is uniformly divided to a plurality of paths after mixing in the gas mixing tank. The plurality of paths are respectively infused to each fan section of the integrated multiple-area reduction tube. The integrated multiple-area reduction tube is heated by a test stove. The temperature of the test stove is controlled by a temperature controller. The integrated multiple-area reduction tube is putted into the test stove for executing reduction pulverization test. The advantage of the invention is that not only the efficiency of test is high, but also the automatic air distribution device and automatic temperature controlling device are advantageous for the accurate control of the testprocedure. The metallurgy blast furnace ironmaking operator is provided with in-time and reliable test data.
Description
Technical field
The invention belongs to the reduction degradation technical field of iron ore, a kind of iron ore automatic control static state low temperature reduction degradation test device and test method particularly are provided.
Background technology
Iron ore is the indispensable raw material of steel and iron industry, and blast furnace process is paid much attention to the performance quality of iron ores such as sintering deposit, pellet, lump ore, and especially the low-temperature reduction disintegration of iron ore can be very big to the blast furnace process influence.So must carry out the low temperature reduction degradation test to iron ore before going into blast furnace, analyze the influence situation of this iron ore to blast furnace process.Make the also constantly fluctuation of blast furnace raw material of each iron and steel enterprise along with the continuous variation of domestic and international iron ore resource, so the low temperature reduction degradation test mission amount to iron ore is increasing, and, to carry out analytical test to raw material at any time in order to ensure the stable smooth operation of blast furnace.The test period of iron ore low temperature reduction degradation test is long in addition, comprise that processes such as intensification, constant temperature, reduction and cooling will need more than 6 hours, the test of a sample takies a workaday time substantially, and each sample will carry out a plurality of parallel experiments, so, sample can not go out test findings for a long time on time, influences the judgement of blast furnace operating.Therefore, invent test method and the test unit that a kind of iron ore low temperature reduction degradation that can carry out a plurality of parallel experiments of a plurality of samples or a kind of sample is simultaneously tested.
Summary of the invention
The object of the present invention is to provide a kind of iron ore automatic control static state low temperature reduction degradation test device and test method, realized to carry out simultaneously the efficient static state low temperature reduction degradation of the control automatically test of a plurality of parallel experiments of multiple iron ore sample or a kind of iron ore sample.Reducing gas composition, flow and temperature in the process of the test are made as automatic control.This test method and test unit be the efficient height not only, and the process of the test precise control, for the metallurgy high furnace operator provides timely reliable test data and operating basis.
Patent of the present invention solves the technical scheme that its technical matters adopts: design an one multi-region reduction tube, put a plurality of samples simultaneously in reduction tube, and the temperature of each sample area of warranty test process is conducted heat and reducing gas stream is wanted uniformity.Reduction degradation test with the mixed gas of CO, CO2 and three kinds of gases of N2 with the accurate distribution of automated gas divider, after in the gas mixing tank, mixing then, evenly be divided into several roads by flow controller, feed each fan section of one multi-region reduction tube respectively, one multi-region reduction tube heats with trial furnace, and the temperature of trial furnace is controlled with attemperating unit.Pretend with the sample of weight in each zone of reduction tube during test, then one multi-region reduction tube is put into trial furnace and carry out the reduction degradation test.
Device of the present invention partly is made up of one multi-region reduction tube, automated gas divider, trial furnace and attemperating unit etc.One multi-region reduction tube comprises a plurality of fan sections (being generally 3～10 fan sections), heat-insulating shield, draft tube, thermopair, escape pipe, fan-shaped porous plate, fan-shaped damping sheet, lid.Make a bimetallic tube, the a plurality of heat-insulating shields of equidistant insertion between the outer wall of bimetallic tube and inwall make bimetallic tube evenly be divided into the fan section of a plurality of isolation, put a fan-shaped porous plate in each fan section, and in each fan section, put a thermopair, be used to survey each regional temperature.Can evenly distribute when making the gas that enters the fan section arrive the iron ore sample, put the fan-shaped damping sheet of one deck between fan-shaped porous plate and draft tube front end gas outlet, reduction tube seals with covering.One multi-region reduction tube is connected with automated gas divider by draft tube.During test, reducing gas CO, CO2, N2 mix the back then and evenly are divided into several roads by flow controller with the accurate distribution of automated gas divider in mixing tank, be input in each fan section of one multi-region reduction tube.The one multi-region reduction tube that the iron ore sample is housed is put into the trial furnace that has attemperating unit and is tested.
The fan section that can do a plurality of identical sizes in the one multi-region reduction tube distributes a draft tube for each fan section, and all draft tube are placed on the middle of one multi-region reduction tube, and each fan section upper side is established an escape pipe.
The draft tube front end of one multi-region reduction tube is made crooked shape gas outlet, make it rush at porous plate, can evenly distribute during for the sample on the gas arrival porous plate that enters the fan section, between gas outlet and fan-shaped porous plate, put the fan-shaped damping sheet of one deck, because it is intensive to open the edge on the fan-shaped damping sheet of midrange speed of gas stream during beginning, middle sparse slightly micro hole.
Test is controlled with automated gas divider with gas flow, automated gas divider will be CO, CO2, three kinds of gases of N2 in accurate ratio distribution, and in the input gas mixing tank, the gas that mixes is evenly shunted each fan section of giving one multi-region reduction tube with flow controller.Mixed gas shunting way amount equates with the fan section quantity and the draft tube quantity (as 3) of one multi-region reduction tube.
The beneficial effect of patent of the present invention is: can carry out the reduction degradation test of a plurality of iron ore samples or a plurality of parallel reduction degradation test of a sample simultaneously, the test efficiency height, and use automatic distributing and flow controller, help the accurate control of process of the test data, for the blast furnace ironmaking operator provides timely reliable detection data, be used for the judgement and the analysis of blast furnace operating.
Description of drawings:
Below in conjunction with the drawings and specific embodiments patent of the present invention is described further.
Fig. 1 is the one-piece construction synoptic diagram of test unit of the present invention.Wherein, one multi-region reduction tube 1, escape pipe 2, bimetallic tube outer wall 3, bimetallic tube inwall 4, thermopair 5, fan section 6, iron ore sample 7, fan-shaped porous plate 8, trial furnace 9, fan-shaped damping sheet 10, draft tube front end exit 11, attemperating unit 12, CO gas 13, CO
214, N
2Gas 15, automated gas divider 16, gas mixing tank 17, flow controller 18, mixed gas divide stream 19, lid 20, draft tube 21, heat-insulating shield 22, micro hole 23.
Fig. 2 is an one multi-region reduction tube synoptic diagram of the present invention.
Fig. 3 is an one multi-region reduction tube cross sectional representation of the present invention.
Fig. 4 is a fan-shaped porous plate synoptic diagram of the present invention.
Fig. 5 is a fan-shaped damping sheet synoptic diagram of the present invention.
Embodiment
As shown in Figure 1, for the static state low temperature reduction degradation test of carrying out multiple iron ore sample simultaneously or a kind of a plurality of parallel experiments of sample, design a while and can adorn a plurality of samples, the one multi-region reduction tube 1 that does not disturb mutually again and the utility appliance of needs.The test of iron ore low temperature reduction degradation is the mixed gas with a certain proportion of CO, CO2 and three kinds of gases of N2, so for accurately distribution and accurately pilot-gas flow, use automated gas divider 16 and flow controller 18.Enter gas mixing tank 1 after three kinds of gas 13,14,15 accurate distributions) in, mixed gas evenly is divided into several roads 19 by flow controller 18, and feeds each fan section 6 of one multi-region reduction tube 1 respectively by draft tube 21.The one multi-region reduction tube 1 of test fashionable dress iron ore sample 7 is put into the trial furnace 9 that has attemperating unit 12 and is carried out the reduction degradation test.
As shown in Figures 2 and 3, the structure of one multi-region reduction tube 1 is, make a bimetallic tube, the a plurality of heat-insulating shields 22 of equidistant insertion between the outer wall 3 of bimetallic tube and bimetallic tube inwall 4, make bimetallic tube evenly be divided into the fan section 6 of a plurality of isolation, put a fan-shaped porous plate 8 in each fan-shaped 6 district, put iron ore sample 12 on the fan-shaped porous plate 13.The temperature in fan section 6 is measured with thermopair 5.A draft tube 21 is distributed in each fan section 6, and draft tube 21 is placed on the middle of one multi-region reduction tube 1, establishes an escape pipe 2 in each fan section 6 upper side.The front end of draft tube 21 is made crooked shape, makes the front end gas outlet 11 of draft tube 21 rush at porous plate 8.Can evenly distribute when arriving porous plate 8 and sample 7, between draft tube front end exit 11 and fan-shaped porous plate 8, put the fan-shaped damping sheet 10 of one deck for the gas that enters fan section 6.One multi-region reduction tube 1 usefulness lid 20 seals.
As shown in Figure 4, open equally distributed micro hole 23 on fan-shaped porous plate 8, reducing gas enters sample 7 by porous plate 8 during test, makes its reduction.
As shown in Figure 5, it is intensive to open the edge on fan-shaped damping sheet 10, middle sparse slightly micro hole 23.
Claims (6)
1. iron ore automatic control static state low temperature reduction degradation test device, comprise one multi-region reduction tube, automated gas divider, trial furnace and attemperating unit, it is characterized in that: one multi-region reduction tube (1) comprises bimetallic tube outer wall (3), bimetallic tube inwall (4), heat-insulating shield (22), draft tube (21), thermopair (5), escape pipe (2), fan-shaped porous plate (8), fan-shaped damping sheet (10) and lid (20), the a plurality of heat-insulating shields of equidistant insertion (22) between bimetallic tube outer wall (3) and bimetallic tube inwall (4), make bimetallic tube evenly be divided into the fan section (6) of a plurality of mutual isolation, put a fan-shaped porous plate (8) in each fan section (6), put the fan-shaped damping sheet of one deck (10) between fan-shaped porous plate (8) and draft tube front end exit (11), one multi-region reduction tube (1) seals with lid (20); One multi-region reduction tube (1) is connected with automated gas divider (12) by draft tube (21), and one multi-region reduction tube (1) is put into the trial furnace (9) that has attemperating unit (12) and tested.
2. test unit according to claim 1, it is characterized in that: do a plurality of fan sections (6) in the one multi-region reduction tube (1), a draft tube (21) is distributed in each fan section (6), all draft tube (21) are arranged in the middle of one multi-region reduction tube (1), and each fan section (6) upper side is established an escape pipe (2).
3. test unit according to claim 1 is characterized in that: put iron ore sample (7) above the fan-shaped porous plate (8) in each of one multi-region reduction tube (1), and put a thermopair (5) in each fan section (6).
4. test unit according to claim 1, it is characterized in that: draft tube front end exit (11) is crooked shape, between fan-shaped porous plate (8) and draft tube front end exit (11), put the fan-shaped damping sheet of one deck (10), it is intensive to open the edge on fan-shaped damping sheet (10), middle sparse slightly micro hole (23).
5. test unit according to claim 1 is characterized in that: mixed gas divides stream (19) quantity to equate with fan section (6) quantity and draft tube (21) quantity of one multi-region reduction tube (1).
6. one kind is adopted the described test unit of claim 1 to carry out the method that iron ore automatic control static state low temperature reduction degradation is tested, it is characterized in that: design an one multi-region reduction tube, in reduction tube, put a plurality of samples simultaneously, and the temperature of each sample area of warranty test process is conducted heat and reducing gas stream is wanted uniformity; Reduction degradation test CO, CO
2And N
2The mixed gas of three kinds of gases is with the accurate distribution of automated gas divider, after in the gas mixing tank, mixing then, evenly be divided into several roads by flow controller, feed each fan section of one multi-region reduction tube respectively, one multi-region reduction tube heats with trial furnace, and the temperature of trial furnace is controlled with attemperating unit; Pretend with the sample of weight in each zone of reduction tube during test, then one multi-region reduction tube is put into trial furnace and carry out the reduction degradation test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101148000A CN101299035B (en) | 2008-06-12 | 2008-06-12 | Iron ore automatic control static state low temperature reduction disintegration test device and test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101148000A CN101299035B (en) | 2008-06-12 | 2008-06-12 | Iron ore automatic control static state low temperature reduction disintegration test device and test method |
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| CN101299035A CN101299035A (en) | 2008-11-05 |
| CN101299035B true CN101299035B (en) | 2010-06-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102023176B (en) * | 2010-12-13 | 2012-11-21 | 首钢总公司 | Method for acquiring high temperature characteristics of iron ore powder in sintering process |
| CN102692356A (en) * | 2012-05-17 | 2012-09-26 | 重庆科技学院 | Metallurgical properties detection set for reduction, pulverization and expansion of iron ore |
| CN104991054B (en) * | 2015-07-15 | 2017-08-08 | 重庆科技学院 | A kind of fluid test instrument multi-region isocon and application method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107182A (en) * | 1994-06-01 | 1995-08-23 | 重庆大学 | Method for controlling low-temperature reduction degradation of blast furnace mineral aggregate and collecting and spraying device |
| CN2807258Y (en) * | 2005-07-04 | 2006-08-16 | 首钢总公司 | Iron ore low-temperature reduction and pulverization device |
-
2008
- 2008-06-12 CN CN2008101148000A patent/CN101299035B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107182A (en) * | 1994-06-01 | 1995-08-23 | 重庆大学 | Method for controlling low-temperature reduction degradation of blast furnace mineral aggregate and collecting and spraying device |
| CN2807258Y (en) * | 2005-07-04 | 2006-08-16 | 首钢总公司 | Iron ore low-temperature reduction and pulverization device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-172315A 1999.06.29 |
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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: Capital Iron & Steel General Company |