CN206609839U - A kind of testing equipment of reduced iron - Google Patents
A kind of testing equipment of reduced iron Download PDFInfo
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- CN206609839U CN206609839U CN201720202763.3U CN201720202763U CN206609839U CN 206609839 U CN206609839 U CN 206609839U CN 201720202763 U CN201720202763 U CN 201720202763U CN 206609839 U CN206609839 U CN 206609839U
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Abstract
The utility model discloses a kind of testing equipment of reduced iron.The equipment includes heating furnace, reaction tube, air inlet pipe, air distributing device, water vapor generation device, weighing device and temperature measuring equipment；Water vapor generation device includes gas washing unit, control temperature unit and weighing cell；Control temperature unit connection gas washing unit, control gas washes the temperature of unit；Weighing cell connection gas washing unit, measurement gas washes the weight of unit；Reaction tube is arranged in heating furnace, and air distributing device gas outlet connection gas washing unit air inlet, gas washes unit gas outlet by air inlet pipe coupled reaction pipe air inlet, and weighing device coupled reaction pipe, temperature measuring equipment sets the inside of reaction tube.Testing equipment of the present utility model, increases vapor in also Primordial Qi, can both simulate real reduction reaction, and analysis carbon phenomenon can be eliminated again.
Description
Technical field
The utility model belongs to ore reduction reaction test equipment technical field, more particularly to a kind of experiment of reduced iron is set
It is standby.
Background technology
DRI (DRI) is also known as sponge iron, is iron ore less than being reduced directly obtained iron content under fusion temperature
Product.Sponge iron is a kind of substitute of steel scrap, is electric furnace smelting clean steel, the indispensable impurity diluent of high-quality steel, is
The cooling agent of pneumatic steelmaking high-quality, is to develop the indispensable raw material of Ferrous Metallurgy short route., whole world direct-reduction in 2014
The annual production of iron records high up to 74,500,000 tons.Direct-reduction technique is classified as the Main way of development of iron ＆ steel industry by China
One of.
The technique of production DRI is referred to as direct-reduction process, belongs to non-blast furnace ironmaking technique, is divided into gas base method and coal
The major class of base method two.In current world wide, 76% DRI is produced by gas base method.Every kind of different iron ore exists
Carry out before gas-based shaft kiln directly reduced industrialization, be required to carry out basic gas-based reduction test, to grope to determine gas-based reduction
Whether the index such as basic parameter and investigation reducing property meets large industrialized requirement.
CO is one of gas necessary to Primordial Qi is gone back when gas-based reduction is tested, and CO gases easily occur in the range of 500-700 DEG C
Analyse carbon reaction.Also Primordial Qi equipped with a large amount of ratio CO can pass through the temperature section long period in admission line warm, therefore
Easily occur analysis carbon phenomenon, and reaction in furnace solid material (acid pellet/sponge iron) surface is stained with many carbon dusts, and influence also
The experiment of original reaction is carried out, and then influences the accuracy of test data；In the case of serious analysis carbon, also Primordial Qi air inlet pipe can be also caused
Road is blocked, and damages reaction unit and experiment can not be carried out.
All it is that, containing certain vapor, current reduction reaction testing equipment is unable to mould also in Primordial Qi in actual production
Intend the influence that also Primordial Qi is reacted ore reduction of different water cut.
Utility model content
In order to solve the above problems, the utility model is intended to propose a kind of testing equipment of reduced iron, increases in also Primordial Qi
Add vapor, to simulate also influence of the Primordial Qi to reduction reaction of different water vapour contents, while vapor can eliminate CO analysis
Carbon phenomenon, prevents from analysing influence of the carbon reaction to experiment.
The utility model provides a kind of testing equipment of reduced iron, including heating furnace, reaction tube, air inlet pipe, air distributing device,
Water vapor generation device, weighing device and temperature measuring equipment；
The heating furnace is provided with cavity；The reaction tube inner hollow, bottom is provided with air inlet；
The water vapor generation device includes gas washing unit, control temperature unit and weighing cell；The control temperature unit connects
The gas washing unit is connect, controls the gas to wash the temperature of unit；It is single that the weighing cell connects the gas washing
Member, measures the weight that the gas washes unit；
The reaction tube is arranged in the heating furnace, and the air distributing device gas outlet connects the gas washing unit and entered
Gas port, the gas washing unit gas outlet connects the reaction tube air inlet by air inlet pipe, and the weighing device connects institute
Reaction tube is stated, the temperature measuring equipment sets the inside of the reaction tube.
Water vapor generation device can produce vapor, and the gas mixing that vapor is produced with air distributing device obtains also Primordial Qi.
The content of also Primordial Qi reclaimed water steam is controllable, while vapor can prevent also analysis carbon phenomenon of the Primordial Qi in air inlet pipe.
Weighing device is used to weigh the weight of reaction tube, with record during reduction reaction the weight change situation of sample and
Reduction degree situation of change.Temperature measuring equipment is used for the temperature for measuring sample in reaction tube.
As the utility model preferred embodiment, the control temperature unit of the water vapor generation device uses water-bath temperature control
Mode or Electric heating.
Specifically, the top of the reaction tube is provided with temperature measuring equipment mounting hole, the temperature measuring equipment is filled by the thermometric
Mounting hole is put to fix.Temperature measuring equipment is used for the temperature for measuring sample, and sample is put into after reaction tube, temperature measuring equipment is passed through into thermometric
Device mounting hole intercalation reaction pipe and fixation, one end of temperature measuring equipment is extended in sample.
Further, experimental rig of the present utility model also includes orifice plate, and the orifice plate is provided with the hole of insertion；The hole
Plate is arranged in the reaction tube, and the inner chamber of the reaction tube is divided into epicoele and cavity of resorption.
As the preferred scheme of the utility model, the weighing device includes electronic balance and hook, and the reaction tube leads to
Cross the lower section linked up with and be suspended on the electronic balance.Another scheme, weighing device can also be electronic scale, installed in anti-
Should pipe lower section, in real time measure reaction tube weight.
Specifically, the air distributing device includes multiple gas cylinders and gas mixing device, the gas cylinder connects the gas mixing device, often
A kind of gas is housed, gas mixing device is used for the mixing of multiple gases in individual gas cylinder.
As preferred scheme, the top of the reaction tube is provided with gas outlet.The gas outlet of reaction tube is used to discharge gas,
Also it may be provided at the top of reaction tube side wall.The position of reaction tube gas outlet is determined according to the situation of actual use.
Another object of the present utility model is to provide a kind of method for carrying out reducing iron tests using the said equipment, including step
Suddenly：
A, sample sent into the reaction tube, sample is heated, the weighing device measures the reaction tube in real time
Weight, the temperature measuring equipment measures the temperature of sample in the reaction tube；
B, air distributing device generation gaseous mixture, gas washing unit is passed through by the gaseous mixture, and generation also Primordial Qi is described
Also the percent by volume of Primordial Qi reclaimed water steam is 0-10%；
C, the also Primordial Qi by the air inlet pipe is passed through the reaction tube, occurs reduction reaction with the sample.
It is preferred that, the temperature that the gas washing unit produces vapor is 15-70 DEG C.
Further, in the step A, the sample is placed on the orifice plate.
Reduced iron testing equipment and method that the utility model is provided, are generated by air distributing device and water vapor generation device
Also Primordial Qi, vapor that can be in also Primordial Qi with addition of different proportion, so as to simulate the also Primordial Qi of different water cut to iron ore also
The influence of original experiment；Vapor also in Primordial Qi can eliminate CO analysis carbon phenomenon, substantially reduce the hair that carbon reaction is analysed in air inlet pipe
It is raw, prevent from analysing influence of the carbon reaction to experiment.
Brief description of the drawings
Fig. 1 is the utility model embodiment reduced iron testing equipment structural representation；
Fig. 2 is the flow chart of the utility model embodiment reduced iron test method.
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just it better understood when the advantage of scheme of the present utility model and its various aspects.However, specific implementations described below side
Formula and embodiment are only the purposes of explanation, rather than to limitation of the present utility model.
As shown in Figure 1, on the one hand, the utility model embodiment provides a kind of testing equipment of reduced iron, including heating furnace
1st, reaction tube 2, air inlet pipe 3, air distributing device 4, water vapor generation device 5, weighing device 6 and temperature measuring equipment 7.
Heating furnace 1 is resistance-heated furnace, and provided with cavity, for sample and the also heating of Primordial Qi, heat is provided for reduction reaction
Energy.
Reaction tube 2 is cylinder, and inner hollow, bottom is provided with air inlet.The top sealing of reaction tube 2, top is provided with out
Gas port and temperature measuring equipment mounting hole.Sample is put into reaction tube 2, and also Primordial Qi is passed through by air inlet, and it is anti-to occur reduction with sample
Should.The coal gas produced is reacted to be discharged by the gas outlet at top.
Air inlet pipe 3 is used to that reaction tube 2 will to be sent into after cold also Primordial Qi heating, so as to the progress of reduction reaction.Plus thermal reduction gas
Heat provided by heating furnace 1.
Air distributing device 4 is used to generate gaseous mixture, and it includes gas flow metering control device, gas mixing device and multiple gas cylinders.It is many
Gas N is respectively provided with individual gas cylinder2、CO、CO2、CH4And H2Deng.Each gas cylinder is connected with gas mixing device, the utility model embodiment
In, gas flow metering control device is used for the control of gas flow, preferably mass flow controller.
Water vapor generation device 5 includes gas washing unit, control temperature unit and weighing cell.Control temperature unit is used to control gas
Body washes the temperature of unit, and weighing cell is used for the weight that gas washes unit.Control temperature unit uses water-bath temperature control method or electricity
Mode of heating.The weight change that gas washes unit is measured by measuring unit, the water being brought into also Primordial Qi is calculated and steams
The weight of gas, and then calculate the water content of also Primordial Qi.According under different temperatures, the saturated vapour pressure difference of water is gone back to adjust
The ratio of vapor in Primordial Qi, and the temperature that the result calculated adjusts control temperature unit setting again is fed back according to weighing cell.
Weighing device 6 is used to weigh the weight of reaction tube, to record the weight change situation of sample during reduction reaction
With reduction degree situation of change.The weighing device 6 of the utility model embodiment includes electronic balance 601 and hook 602.Reaction tube 2
The lower section of electronic balance 601 is suspended on by hook 602, reaction tube 2 is placed in heating furnace 1.Electronic balance 601 can be by sample
1g is accurate to the weight of reaction tube.
Temperature measuring equipment 7 is used for the temperature for measuring sample in reaction tube in real time.Temperature measuring equipment 7 is elongated thermocouple.Thermometric
One end of device 7 is fixed on reaction tube by temperature measuring equipment mounting hole, in other end insertion sample, in real time the temperature of monitoring sample
Degree.
Orifice plate 8 is pie, and orifice plate 8 is provided with the hole of insertion.Orifice plate 8 is arranged in reaction tube 2, by the inner chamber of reaction tube 2
It is divided into epicoele 201 and cavity of resorption 202.In use, sample is placed on orifice plate 8, also the air inlet of the reacted pipe of Primordial Qi enters
The cavity of resorption 202 of reaction tube, by the through hole on orifice plate 8, into epicoele 201.One layer of Ceramic Balls are covered with orifice plate 8, examination can be made
Sample contacts more abundant with also Primordial Qi, is easy to the progress of reduction reaction.
On the other hand, the said equipment is utilized to carry out reduction iron tests as shown in Fig. 2 the utility model embodiment provides one kind
Method, including step：
1st, sample is placed on orifice plate, sample is heated, weighing device measures the weight of reaction tube, thermometric in real time
The temperature of sample in measurement device reaction tube.
2nd, air distributing device generation gaseous mixture, gas washing unit is passed through by gaseous mixture, and generation also Primordial Qi, also Primordial Qi reclaimed water is steamed
The percent by volume of gas is 0~10%, and the temperature for producing vapor is 15~70 DEG C.
3rd, also Primordial Qi is passed through reaction tube by air inlet pipe, occurs reduction reaction with sample.
In above-mentioned step 2, monitor the weight that gas washes unit in real time by weighing cell, unit is washed according to gas
Weight change, the weight for being brought into the vapor also in Primordial Qi can be calculated, and then calculate the water content in also Primordial Qi.
The result fed back according to weighing cell, adjusts the temperature of the setting of control temperature unit, you can the growing amount of regulation vapor.
Embodiment 1
The reduction situation of sample under the utility model embodiment test simulation gas renormalizing production also Primordial Qi member condition,
Step is as follows：
1st, sample acid pellet 500g is loaded in reaction tube.
2、H2、CO、CO2、CH4、N2Deng gas through mass flow controller distribution, be mixed into required gaseous mixture, each gas
The percentage by volume of composition is H2+ CO=94.0%, CO2For 2.2%, CH4For 1.1%, N2For 2.7%, flow is 15L/min.
The 3rd, gaseous mixture is passed through to the water vapor generation device being made up of the Drexel bottle of 6L ironys, the gentle electric-heating water bath in day
In, electric-heating water bath is heated to the Drexel bottle that is filled with water, and balance weighs Drexel bottle and the overall weight change of water-bath, so that
It is 38 DEG C to calculate water temperature in the also Primordial Qi composition of generation, water-bath, and the weightlessness of average half an hour that balance is weighed is 22.7g, raw
Into the percent by volume of each gas also in Primordial Qi be H2+ CO=88.5%, CO2For 2.1%, CH4For 1.0%, N2For 2.5%
And H2O is 5.9%.
4th, also Primordial Qi is passed through reaction tube after early fuel evaporation from bottom, flows through after orifice plate and Ceramic Balls to enter with sample contacts
Row reduction reaction, sponge iron is reduced into by acid pellet, and the reduction tail gas of generation is discharged from reaction tube gas outlet.
In above-mentioned experiment, thermocouple is inserted into sample, and for measuring reaction specimen temperature, adding thermal resistance stove comes to reaction
Pipe provides required heat, 850 DEG C of reaction temperature.Electronic balance is used for the weight for measuring reaction tube in real time, anti-to record reduction
Reduction degree is 86% after the weight change situation and reduction degree situation of change of sample, 1.5h during answering.Taken out after reduction reaction
And check sample, it is found that specimen surface does not almost analyse carbon.
Embodiment 2
The utility model embodiment test simulation coal gas prepares the reduction situation of sample under also Primordial Qi member condition, step
It is as follows：
1st, sample acid pellet amount 500g is loaded in reaction tube.
2、H2、CO、CO2、CH4、N2Deng gas through mass flow controller distribution, be mixed into required gaseous mixture, gaseous mixture
In each gas componant percent by volume be H2+ CO=94.4%, CO2For 2.5%, CH4For 1.1%, N2For 2.0%, gas stream
Measure as 13L/min.
The 3rd, gaseous mixture is passed through to the water vapor generation device being made up of the Drexel bottle of 4L ironys, the gentle chilled water bath in day, is made
Cold water bath carries out temperature control to the Drexel bottle that is filled with water, and balance weighs Drexel bottle and the overall weight change of refrigeration water-bath, from
And the also Primordial Qi composition of generation is calculated, water-bath water temperature is 21 DEG C, and the weightlessness of average half an hour that balance is weighed is 7.0g, generation
The percent by volume of each composition also in Primordial Qi be H2+ CO=92.3%, CO2For 2.4%, CH4For 1.1%, N2For 2.0% He
H2O is 2.2%.
4th, also Primordial Qi is passed through reaction tube after early fuel evaporation from bottom, flows through after orifice plate and Ceramic Balls to enter with sample contacts
Row reduction reaction, sponge iron is reduced into by acid pellet, and the reduction tail gas of generation is discharged from reaction tube gas outlet.
In above-mentioned experiment, thermocouple is inserted into sample, and for measuring reaction specimen temperature, adding thermal resistance stove comes to reaction
Pipe provides institute's calorific requirement, and the temperature of reaction is 850 DEG C.Electronic balance is used for the weight for measuring reaction tube in real time, to record reduction
Reduction degree is 92% after the weight change situation and reduction degree situation of change of sample, 1.5h in course of reaction.Taken after reduction reaction
Go out and check sample, it is found that specimen surface only has a small amount of analysis carbon, weigh about 2.1g.
Embodiment 3
The reduction situation of sample under the utility model embodiment test simulation gas renormalizing production also Primordial Qi member condition,
Step is as follows：
1st, sample acid pellet amount 500g is loaded in reaction tube.
2、H2、CO、CO2、CH4、N2Deng gas through mass flow controller distribution, be mixed into required gaseous mixture, each gas
The percent by volume of composition is H2+ CO=94.0%, CO2For 2.2%, CH4For 1.1%, N2For 2.7%, flow is 15L/min.
The 3rd, gaseous mixture is passed through to the water vapor generation device being made up of the Drexel bottle of 12L ironys, the gentle electric heater in day, electricity adds
Hot device is heated to the irony Drexel bottle that is filled with water, and balance weighs Drexel bottle and the overall weight change of electric heater, so as to calculate
It is 60 DEG C to go out water temperature in the also Primordial Qi composition of generation, Drexel bottle, and the weightlessness of average half an hour that balance is weighed is 40.2g, generation
Also in Primordial Qi, the percent by volume of each gas componant is H2+ CO=85.5%, CO2For 1.9%, CH4For 1.0%, N2For 2.6%
And H2O is 10.0%.
4th, also Primordial Qi is passed through reaction tube after early fuel evaporation from bottom, flows through after orifice plate and Ceramic Balls to enter with sample contacts
Row reduction reaction, sponge iron is reduced into by acid pellet, and the reduction tail gas of generation is discharged from reaction tube gas outlet.
In above-mentioned experiment, thermocouple is inserted into sample, and for measuring reaction specimen temperature, adding thermal resistance stove is to reaction tube
Energy is provided, reduction reaction temperature is 850 DEG C.Electronic balance is used for the weight for measuring reaction tube in real time, to record reduction reaction
During sample weight change situation and reduction degree situation of change, reduction degree is 89% after 1.5h.Taken out simultaneously after reduction reaction
Sample is checked, it is found that specimen surface does not almost analyse carbon.
It should be noted that each embodiment above by reference to described by accompanying drawing is only to illustrate the utility model rather than limit
Scope of the present utility model is made, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, signified outer unless the context, the word occurred in the singular includes plural form, and vice versa.In addition, except non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment to use.
Claims (6)
1. a kind of testing equipment of reduced iron, it is characterised in that steamed including heating furnace, reaction tube, air inlet pipe, air distributing device, water
Gas generating means, weighing device and temperature measuring equipment；
The heating furnace is provided with cavity；
The reaction tube inner hollow, bottom is provided with air inlet；
The water vapor generation device includes gas washing unit, control temperature unit and weighing cell；The control temperature unit connects institute
Gas washing unit is stated, controls the gas to wash the temperature of unit；The weighing cell connects the gas washing unit, surveys
Measure the weight that the gas washes unit；
The reaction tube is arranged in the heating furnace, and the air distributing device gas outlet connects the gas washing unit air inlet
Mouthful, the gas washing unit gas outlet connects the reaction tube air inlet by air inlet pipe, and the weighing device connection is described
Reaction tube, the temperature measuring equipment sets the inside of the reaction tube.
2. testing equipment according to claim 1, it is characterised in that the control temperature unit of the water vapor generation device is used
Water-bath temperature control method or Electric heating.
3. testing equipment according to claim 1, it is characterised in that installed provided with temperature measuring equipment at the top of the reaction tube
Hole, the temperature measuring equipment is fixed by the temperature measuring equipment mounting hole.
4. testing equipment according to claim 1, it is characterised in that further comprise orifice plate, the orifice plate is provided with and passed through
Logical hole；The orifice plate is arranged in the reaction tube, and the inner chamber of the reaction tube is divided into epicoele and cavity of resorption.
5. testing equipment according to claim 1, it is characterised in that the weighing device includes electronic balance and hook,
The reaction tube is suspended on the lower section of the electronic balance by the hook.
6. testing equipment according to claim 1, it is characterised in that the air distributing device includes multiple gas cylinders and mixed gas is filled
Put, the gas cylinder connects the gas mixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202763.3U CN206609839U (en) | 2017-03-03 | 2017-03-03 | A kind of testing equipment of reduced iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202763.3U CN206609839U (en) | 2017-03-03 | 2017-03-03 | A kind of testing equipment of reduced iron |
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| Publication Number | Publication Date |
|---|---|
| CN206609839U true CN206609839U (en) | 2017-11-03 |
Family
ID=60168327
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720202763.3U Expired - Fee Related CN206609839U (en) | 2017-03-03 | 2017-03-03 | A kind of testing equipment of reduced iron |
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| Country | Link |
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| CN (1) | CN206609839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199922A (en) * | 2021-11-18 | 2022-03-18 | 北京科技大学 | Product quality test device for different process heating processes of hot rolling steel billet |
-
2017
- 2017-03-03 CN CN201720202763.3U patent/CN206609839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199922A (en) * | 2021-11-18 | 2022-03-18 | 北京科技大学 | Product quality test device for different process heating processes of hot rolling steel billet |
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