CN109187182A - A method of for detecting clinker reactivity worth - Google Patents
A method of for detecting clinker reactivity worth Download PDFInfo
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- CN109187182A CN109187182A CN201810996901.9A CN201810996901A CN109187182A CN 109187182 A CN109187182 A CN 109187182A CN 201810996901 A CN201810996901 A CN 201810996901A CN 109187182 A CN109187182 A CN 109187182A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The invention discloses a kind of methods for detecting clinker reactivity worth, belong to field of metallurgy.The present invention uses clinker reactivity worth detection system, follows the steps below: S1, slag system configuration；S2, slag system heating treatment: it weighs quantitative clinker and is put into heat in heating furnace and melt；S3, grinding prepare lime powder；S4, compacting oxidation calcium tablet: lime powder is pressed into oxidation calcium tablet；S5, will start to detect in oxidation calcium tablet and clinker investment detection system.The present invention overcomes the shortcomings of to influence big, testing result inaccuracy to the subjective factor of calcium oxide and the detection of clinker reactivity worth in the prior art, it is injected into calcium oxide slot using by clinker, time needed for detecting clinker dissolution certain thickness calcium oxide, change judgement reaction by physical signal and reach setting position, accuracy and detection efficiency that calcium oxide is dissolved in the detection of clinker respond can be improved.
Description
Technical field
The present invention relates to metallurgical technology fields, more specifically to a kind of method for detecting clinker reactivity worth.
Background technique
Steel industry is the main foundation industry of national economy, and pneumatic steelmaking process is essential heavy in steel process
Component part is wanted, molten iron is being fast implemented to while molten steel transformation, is also resulting in huge environmental pollution and the wasting of resources.?
In the long process of entire steel, pneumatic steelmaking is generally used high alkalinity dephosphorization, need to prepare the vessel slag of high alkalinity, largely uses stone
The basic materials such as ash, this not only adds the costs of steel-making, also create a large amount of waste residue.In order to improve the effect of converter dephosphorization
Rate needs to carry out influence of the various compounds to dephosphorization effect in slag.
In steelmaking process, it is de- that the lysigenous CaO base clinker of the slag making materials such as lime and dolomite is mainly used for dephosphorization
Sulphur, the quick and complete dissolution of lime are discharged to reaction rate (especially dephosphorisation reaction), the consumption of reduction slag material and the quantity of slag is accelerated
It etc. playing an important role, but is limited by lime rate of dissolution, still has part lime undissolved in copper smelter slag, cause dephosphorization efficiency
Low, the problems such as quantity of slag is big.In recent years, in order to reduce pneumatic steelmaking cost, many iron and steel enterprises start using double slags+stay slag technique
It smelts, how to allow lime in low temperature slag (containing P2O5) in quickly dissolution be to realize one of high efficiency dephosphorating difficult point.
After usual converter smelting stays slag, new phosphorous molten iron is added, the calcics raw materials such as lime, the slag left before is then added
Contain CaO, SiO in system2, Fe2O3, P2O5, MgO, Al2O3Equal ingredients, the CaO being newly added can gradually be corroded by ingredient in slag system,
2CaOSiO is formed in calcium oxide surface layer2-3CaO·P2O5Solid solution, then P continues to spread into slag in molten iron, to reach
Dephosphorization purpose.However, different slag systems will affect the 2CaOSiO after new calcium oxide is added2-3CaO·P2O5Solid solution forms speed
Rate, to determine the dephosphorizing capacity of slag.
At present in research of the clinker to the reactivity worth of calcium oxide, generally take calcium oxide is added in slag observe it is molten
The mode for solving situation, in document " 2CaOSiO2-3CaO·P2O5Solid solution formation mechenism " (Su Chang, Yu Jingkun, Wang Hongzhang；East
Northern college journal (natural science edition), 2013,34 (10) 1434-1437) in propose detection method be: first prepare just slag specimen simultaneously fill
Enter in corundum crucible, be then placed in heating furnace and be warming up to predetermined temperature, after clinker sufficiently melts, by what is suppressed in advance
It is immersed in CaO piece insertion clinker and quickly removes after a certain period of time and be air-cooled to room temperature；Then sample is polished directly, is utilized
Scanning electron microscope (SEM) and energy depressive spectroscopy (EDS) carry out observation and Analysis of components, observing response circle to sample
Face discloses 2CaOSiO2-3CaO·P2O5The formation mechenism of solid solution layer." calcium oxide particle is in CaO-FeO- for document
SiO2-P2O5Solubility behavior in system clinker " (Xia Yunjin, Li Xiaopan, Li Jie etc.；Process engineering journal, 2017,17 (05)
It is proposed in 1041-1046) and calcium oxide particle is added to CaO-FeO-SiO2-P2O5In system clinker, different time is studied to oxygen
The influence for changing calcium solubility behavior, dips slag specimen using rod iron, is quickly cooled down with nitrogen, after inlaying sanding and polishing with resin, with sweeping
Retouch the dissolution situation of Electronic Speculum and energy spectrum analysis calcium oxide；The experimental method needs to handle sample, then passes through scanning electricity
Sem observation Calcium oxide dissolution response situation, artificial subjective judgement process are more.
By analyzing above, although the prior art is able to detect dissolution situation of the calcium oxide in slag to a certain extent,
It is that these detection methods are all the case where reaction by experimenter's subjective judgement calcium oxide, and artificial subjective factor is affected,
Quick, science it cannot detect reflex action of the calcium oxide in slag.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome in the prior art to the subjective factor shadow of calcium oxide and the detection of clinker reactivity worth
Big, testing result inaccuracy deficiency is rung, a kind of clinker reactivity worth detection system is provided, is injected into oxidation using by clinker
In calcium slot, the time needed for detection clinker dissolution certain thickness calcium oxide, judgement reaction is changed by physical signal and reaches setting
Accuracy and detection efficiency that calcium oxide is dissolved in the detection of clinker respond can be improved in position.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of method for detecting clinker reactivity worth of the invention, using clinker reactivity worth detection system, according to
Following steps carry out:
S1, slag system configuration；
S2, slag system heating treatment: it weighs the clinker quantitatively prepared and is put into heating furnace and heat, make slag specimen uniform melt；
S3, grinding prepare lime powder: by blocky calcium oxide crushing grinding at short grained calcium oxide, then using
100-150 mesh round-hole mesh is sieved, and screenings continues fine grinding 15min or more, makes it through 200-250 mesh round-hole mesh；
S4, compacting oxidation calcium tablet: under 8-12MPa pressure (pressure), it is 50- that lime powder, which is pressed into diameter,
60mm, with a thickness of the oxidation calcium tablet of 1-2mm, and pressure maintaining 3-5min；
S5, will start to detect in oxidation calcium tablet and clinker investment detection system.
Further, detailed process is as follows by step S5:
A1, oxidation calcium tablet is put into the reactive tank of detection system, the pressure detecting instrument of lower section is zeroed out operation；
A2, by the clinker of fusing pour into reactive tank with oxidation calcium tablet contact, start timing at this time；
A3, increased pressure value is recorded according to pressure detecting instrument, is pressurized by compress cell, remembers pressure detecting instrument
Record reaches required steady state value, ensures that oxidation calcium tablet stress is identical；
A4, when electrical signal detector detects that electric signal changes, stop timing, recording reacting time, with oxidation
The ratio between the thickness of calcium tablet and time are reaction rate, can characterize the ability of slag system dissolution calcium oxide.
Further, clinker reactivity worth detection system includes reaction member and electrical signal detector, reaction member packet
The insulation board of side and the conductive plate of bottom are included, insulation board and conductive plate surround the reactive tank for accommodating clinker and calcium oxide,
Electrode is equipped in reactive tank, electrode passes through insulation board and is connected with electrical signal detector, and conductive plate is also connected with electrical signal detector.
Further, clinker reactivity worth detection system further includes pressure detecting instrument, and pressure detecting instrument is set to conduction
Board bottom portion, for detecting the pressure of conductive plate receiving.
Further, the open plate for being used to open/closing reactive tank is equipped at the top of reaction member.
Further, clinker reactivity worth detection system further includes compress cell, and compress cell includes that one end extends into
Snorkel in reactive tank.
Further, the side of snorkel is equipped with blowdown pipe, and snorkel is equipped with screw piston far from one end of reactive tank
Bar, screw piston bar are matched with snorkel inner thread and are merged for squeezing gas in snorkel.
Further, cladding is provided with insulating layer on the outside of reaction member.
Further, microwave applicator is provided on the outside of reaction member.
Further, the electrode in reactive tank is set to above conductive plate at 5-10mm.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) a kind of method for detecting clinker reactivity worth of the invention, is detected using special detection system,
It is to inject liquid slag in calcium oxide, the time needed for detection clinker dissolution certain thickness calcium oxide, passes through physical signal
Variation reaches setting position to judge to react, and complicated chemical phase transition process is changed into simple figure by electrical signal detection component
Linear change improves the simplicity of detection, easily operated, and effectively increases calcium oxide and be dissolved in the detection of clinker respond
Accuracy and detection efficiency.
(2) a kind of method for detecting clinker reactivity worth of the invention, detection system include reaction member, reactive tank
Interior electrode passes through insulation board and is connected with electrical signal detector, and conductive plate is connected with electrical signal detector, when reactive tank internal oxidition
When etching reaction and burn through occur for calcium tablet and clinker, electrical signal detector detects that electric signal changes, to aoxidize calcium tablet
The ratio between thickness and reaction time are reaction rate, can characterize the ability of clinker dissolution calcium oxide, such by physical signal
Change the method to judge reaction arrival setting position, effectively prevents the influence of people position subjective factor, calcium oxide can be improved
It is dissolved in the accuracy and detection efficiency of clinker respond detection, dephosphorization is smelted iron for converter and reliable slagging regime data is provided.
(3) a kind of method for detecting clinker reactivity worth of the invention, detection system further includes compress cell, and is led
It is provided with below battery plate for detecting the pressure detecting instrument for bearing pressure, the pressure detecting instrument moment monitors the pressure that conductive plate is born
Power, by the cooperation of compress cell can the plenum into reactive tank, increase the pressure that oxidation calcium tablet is born, may be implemented
Pressure stabilizing reaction is carried out to oxidation calcium tablet under constant pressure, ensures that oxidation calcium tablet reaction rate is consistent, effectively improves detection accuracy.
(4) a kind of method for detecting clinker reactivity worth of the invention, the compress cell in detection system pass through rotation
Turn screw piston bar and allow to gas in extruded tube to be inflated into reactive tank to realize supercharging effect, by screw piston bar
Different adjustment, make to keep pressure stabilizing state in reactive tank, can effectively avoid because shadow of the error to reaction of quality is added in clinker
It rings, and boost pressure regulation is carried out using screw piston bar, help accurately to control supercharging amount, prevent pressure stabilizing state in reactive tank from occurring
Larger fluctuation further ensures detection accuracy.
Detailed description of the invention
Fig. 1 is of the invention a kind of for detecting the flow diagram of the method for clinker reactivity worth；
Fig. 2 is the structural schematic diagram for the clinker reactivity worth detection system that the present invention uses；
Fig. 3 is the structural schematic diagram of reaction member in the present invention；
Fig. 4 is the structural schematic diagram of another embodiment of the present invention clinker reactivity worth detection system.
Label declaration in schematic diagram:
140, insulating layer；200, reaction member；210, insulation board；220, conductive plate；230, reactive tank；240, electrode；
250, open plate；
300, snorkel；310, screw piston bar；320, blowdown pipe；
400, pressure detecting instrument；500, electrical signal detector；700, microwave applicator；
100, furnace body；110, test sample pipe；120, feed inlet；130, silicon molybdenum heating rod；330, pressure gauge；600, control plane
Plate.
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
The present invention will be further described with reference to the examples below.
Embodiment 1
As Figure 1-Figure 4, a kind of method for detecting clinker reactivity worth of the present embodiment, using special clinker
Reactivity worth detection system, follows the steps below:
S1, slag system configuration: slag system is configured with pure chemistry reagent C aO, SiO2、3CaO·P2O5、FeC2O4For raw material；
S2, slag system heating treatment: it weighs the clinker quantitatively prepared and is put into heating furnace and heat, make slag specimen uniform melt；Tool
Body, it weighs quantitative clinker (such as 200g) and is put into heating furnace, furnace temperature sets 1200-1400 DEG C, and heating process adds for three-stage
Heat keeps the temperature 30-40min under the conditions of the temperature of 300-400 DEG C and 700-800 DEG C first respectively, and preventing from heating up too fast leads to slag
Sample fusion process uneven heating, etc. temperature keep the temperature 30-40min again when rising to 1200-1400 DEG C, it is ensured that filled between each compound
Reaction is divided then to carry out detection operation；
S3, grinding prepare lime powder: by blocky calcium oxide, crushing grinding is at short grained calcium oxide in mortar, so
It is sieved afterwards using 100-150 mesh round-hole mesh, screenings is put into continuation fine grinding 15min or more in agate mortar, makes it through
200-250 mesh round-hole mesh；It now grinds current, prevents water suction rotten；
S4, compacting oxidation calcium tablet: under 8-12MPa pressure, it is 50-60mm, thickness that lime powder, which is pressed into diameter,
For the oxidation calcium tablet of 1-2mm, and pressure maintaining 3-5min；
S5, will start to detect in oxidation calcium tablet and the special detection system of clinker investment, detailed process is as follows:
Oxidation calcium tablet is put into the reactive tank 230 of reaction member 200 by a1, the open plate 250 for opening reaction member 200,
And the pressure detecting instrument of lower section 400 is zeroed out operation；
A2, by the clinker of fusing pour into reactive tank 230 with oxidation calcium tablet contact, start timing at this time；
A3, increased pressure value is recorded according to pressure detecting instrument 400, is pressurized by compress cell, specific rotation pushes away
Into screw piston bar 310 to pressurization and air supplement is carried out in reactive tank 230, the record of pressure detecting instrument 400 is made to reach required steady state value
(such as 200g) ensures that oxidation calcium tablet stress is identical；
A4, when electrical signal detector 500 detects that electric signal changes, stop timing, recording reacting time, with oxygen
The ratio between thickness and the time for changing calcium tablet are reaction rate, can characterize the ability of slag system dissolution calcium oxide.Using the present embodiment
Detection method, it is more convenient to operate, and testing result is more accurate.
Wherein as shown in Figures 2 and 3, special clinker reactivity worth detection system includes reaction member in the present embodiment
200 and electrical signal detector 500, wherein reaction member 200 includes the insulation board 210 of side and the conductive plate 220 of bottom, insulation
Plate 210 and conductive plate 220 surround the reactive tank 230 for accommodating clinker and calcium oxide, and electrode 240 is equipped in reactive tank 230, and
Electrode 240 is set at 220 top 5mm of conductive plate, and electrode 240 passes through insulation board 210 and is connected with electrical signal detector 500, is led
Battery plate 220 is also connected with electrical signal detector 500, electrode 240, conductive plate 220 and 500 structure of electrical signal detector under original state
At off state.Wherein quartz insulator plate can be used in insulation board 210, and graphite guide battery plate can be used in conductive plate 220.
The present embodiment is placed in reactive tank 230 in use, the sheet of the consistency of thickness suppressed is aoxidized calcium tablet, and oxygen
The diameter dimension for changing calcium tablet is matched with the diameter dimension of reactive tank 230, and calcium oxide piece is paved with 230 bottom of reactive tank substantially, will
After oxidation calcium tablet is placed into reactive tank 230, then it is put into a certain amount of lime powder into slot, and is swept powder using hairbrush
To oxidation calcium tablet edge, so that lime powder filling is completely aoxidized the minim gap between calcium tablet and 230 inner wall of reactive tank, prevent subsequent
Clinker is directly contacted with conductive plate 220 from oxidation calcium tablet edge；Then the liquid slag melted is poured into reactive tank 230 simultaneously
It is contacted with oxidation calcium tablet, starts timing at this time, electrode 240 is contacted with clinker always, and clinker contacts concurrently with oxidation calcium tablet
Raw etching reaction, when oxidation calcium tablet is fused, reaction solution and electrode 240, conductive plate 220 and electric signal are examined in reactive tank 230
It surveys the channel status that instrument 500 is constituted and electric signal mutation occurs, when electrical signal detector 500 detects that electric signal changes, stop
Only timing, recording reacting time can characterize slag system dissolution with the ratio between thickness and reaction time for aoxidizing calcium tablet for reaction rate
The ability of calcium oxide.
It should be noted that being directed to the detection of clinker reactivity worth, traditional detection mode is will to aoxidize calcium tablet investment fusing
Clinker in, oxidation calcium tablet is taken out, is cooling after a certain time, then grind away is scanned electron microscope analysis, measurement calcium oxide with
Clinker reacts the thickness to form solid solution layer, judges reaction effect by thickness, cumbersome and inconvenient, and using observation vulnerable to
Artificial subjective factor influences, and causes detection accuracy not high；And the present embodiment then breaks routine, is injected into using by liquid slag
It aoxidizes in calcium tablet, to detect the time needed for clinker dissolves certain thickness calcium oxide, is judged by the variation of physical signal anti-
Setting position should be reached, effectively prevents the influence of people position subjective factor, and electrical signal detection component is by complicated chemical phase transformation
Process is changed into simple figure linear change, improves the simplicity and accuracy of detection, and then can be de- for converter ironmaking
Phosphorus provides reliable slagging regime data.
The detection system of the present embodiment further includes pressure detecting instrument 400 and compress cell, and wherein pressure detecting instrument 400 is arranged
In 220 bottom of conductive plate, for detecting the pressure of the receiving of conductive plate 220, compress cell includes that one end extends into reactive tank 230
Snorkel 300, the open plate 250 for being used to open/closing reactive tank 230 is equipped at the top of simultaneous reactions unit 200, opens opening
Oxidation calcium tablet and clinker can be then put by plate 250, and can then reactive tank 230 be carried out closed by closing open plate 250, be specifically open
Plate 250 may be provided at 210 top of insulation board.The side of the present embodiment Center Vent tube 300 is equipped with blowdown pipe 320, can be with external gas
Bottle carries out pressurization and air supplement for the supplying nitrogen into reactive tank 230 or other inert gases.
Pressure detecting instrument 400 and compress cell are used cooperatively in the present embodiment, can effectively improve the accurate of testing result
Property, specifically, in industry usually detect multiple groups difference clinker sample to the reactivity worth of oxidation calcium tablet, not using constant-quality
Reactive tank 230 is poured into being configured container to the oxidation calcium tablet multiple groups constant-quality clinker that reacts, but prepare with group clinker
When interior, due to slag viscosity is big, density is big etc., part clinker can be adhered on container inner wall, cause to actually enter reaction
Every group of clinker quality in slot 230 is difficult to keep constant, and the pressure generated to oxidation calcium tablet is difficult to keep constant, and aoxidizes calcium tablet
The pressure oscillation of receiving then will affect the etching reaction rate of subsequent generation, to influence detection accuracy, make testing result not
With referential, and the present embodiment then efficiently solves this problem, may be implemented under a constant to carry out oxidation calcium tablet
Pressure stabilizing reaction ensures that oxidation calcium tablet reaction rate is consistent, effectively improves detection accuracy.
In the present embodiment, 220 bottom of conductive plate is provided with pressure detecting instrument 400, and the moment monitors the pressure that conductive plate 220 is born
Power, can react the clinker quality being added into, and compress cell can be pressurized into reactive tank 230, close in open plate 250 in tonifying Qi
In the case where, it can effectively enhance the pressure of the receiving of conductive plate 220 by the pressurization of compress cell, in pressure detecting instrument 400
Under monitoring, by controlling degree of boost, so that conductive plate 220 is kept constant compression, that is, ensure the pressure stabilizing that oxidation calcium tablet is kept constant
State, the pressure that oxidation calcium tablet is born when ensureing every group of detection is identical, clinker and oxidation calcium tablet homogeneous reaction under pressure stabilizing state,
It can effectively avoid because influence of the error of quality to reaction is added in clinker, to effectively improve detection accuracy.
The present embodiment Center Vent tube 300 is equipped with screw piston bar 310, screw piston bar 310 far from one end of reactive tank 230
With 300 inner thread of snorkel with merging for squeezing gas in snorkel 300, realized by the setting of screw piston bar 310
To the accurate pressurization in reactive tank 230, specifically, rotates inward and promote screw piston bar 310 that can effectively squeeze snorkel 300
In gas be filled with it in reactive tank 230, thus increase oxidation calcium tablet bear pressure, until pressure detecting instrument 400 detect
When reaching required constant pressure, stops squeezing, keep pressure stabilizing state.The present embodiment is pressurized using screw piston bar 310,
Advance distance is controlled by the variation of pressure detecting instrument 400, it is not only easy to operate easily controllable, it more can be in pressure detecting instrument 400
Cooperation under, the accurate supercharging amount for controlling gas realizes a small amount of adjustment to gas, prevents pressure stabilizing state in reactive tank 230 from going out
Existing larger fluctuation, further ensures the accuracy of testing result.
Embodiment 2
A kind of method for detecting clinker reactivity worth of the present embodiment, substantially with embodiment 1, only in following steps
It is different:
S2, slag system heating treatment: weighing quantitative clinker and be put into heating furnace, and furnace temperature sets 1400 DEG C, heating process three
Segmentation heating, keeps the temperature 30min under the conditions of 300 DEG C and 700 DEG C of temperature first respectively, etc. temperature protected when rising to 1400 DEG C again
Warm 30min, it is ensured that sufficiently reacted between each compound and then carry out detection operation；
S3, grinding prepare lime powder: by blocky calcium oxide, crushing grinding is at short grained calcium oxide in mortar, so
It is sieved afterwards using 100 mesh round-hole meshes, screenings is put into continuation fine grinding 15min or more in agate mortar, makes it through 200 mesh
Round-hole mesh, now grinds current, prevents water suction rotten；
S4, compacting oxidation calcium tablet: under 10MPa pressure, compacting diameter is 50mm, with a thickness of the oxidation calcium tablet of 1mm, pressure maintaining
3min。
Detection system basic structure in the present embodiment is with embodiment 1, the difference is that being equipped with electrode in reactive tank 230
240, and electrode 240 is set at 220 top 8mm of conductive plate, and further, is arranged on the present embodiment split shed plate 250
There is relief valve, accordingly, the switch valve for controlling gas entrance is provided on snorkel 300, when the liquid slag of high temperature falls
When entering in reactive tank 230 and closing open plate 250, being initially prevents internal gas rapidly expanded by heating, letting out in open plate 250
Pressure valve effectively can carry out of short duration pressure release to expanding gas, ensure detection safety；Then the switch valve on snorkel 300 is opened, and is opened
Begin to establish pressure stabilizing environment to tonifying Qi pressurization is carried out in reactive tank 230, also settable conventional heating device on the outside of snorkel 300,
The gas of pressurization can be preheated, then be entered back into the reactive tank 230 of hot environment, supercharging effect is further stable.It is real
In the detection process of border, by the mutual cooperation of relief valve and switch valve, it is more conducive to flexibly ensure the pressure stabilizing that oxidation calcium tablet is born
State improves the accuracy of detection.
Embodiment 3
A kind of method for detecting clinker reactivity worth of the present embodiment, substantially with embodiment 1, only in following steps
It is different:
S2, slag system heating treatment: weighing quantitative clinker and be put into heating furnace, and furnace temperature sets 1200 DEG C, heating process three
Segmentation heating, keeps the temperature 40min under the conditions of 400 DEG C and 800 DEG C of temperature first respectively, etc. temperature protected when rising to 1200 DEG C again
Warm 40min；
S3, grinding prepare lime powder: by blocky calcium oxide, crushing grinding is at short grained calcium oxide in mortar, so
It is sieved afterwards using 150 mesh round-hole meshes, screenings is put into continuation fine grinding 15min or more in agate mortar, makes it through 250 mesh
Round-hole mesh, now grinds current, prevents water suction rotten；
S4, compacting oxidation calcium tablet: under 12MPa pressure, compacting diameter is 60mm, with a thickness of the oxidation calcium tablet of 2mm, pressure maintaining
5min。
Detection system basic structure in the present embodiment is with embodiment 1, the difference is that being equipped with electrode in reactive tank 230
240, and electrode 240 is set at 220 top 10mm of conductive plate, and further, 200 outside of reaction member in the present embodiment
Cladding is provided with insulating layer 140, can effectively be kept the temperature to reaction member 200, prevent from cooling down rapidly in reactive tank 230, out
Existing clinker solidification phenomenon, influences going on smoothly for detection process, further, is additionally provided with microwave on the outside of reaction member 200
Heater 700 specifically may be disposed at 210 outside of insulation board, keep keeping reaction single micro- heating inside reaction member 200
Temperature inside member 200 is held essentially constant, and is more advantageous to clinker and is aoxidized the normal reaction of calcium tablet, ensures the standard of testing result
True property.
Embodiment 4
A kind of method for detecting clinker reactivity worth of the present embodiment, substantially with embodiment 1, only in following steps
It is different:
S2, slag system heating treatment: weighing quantitative clinker and be put into heating furnace, and furnace temperature sets 1300 DEG C, heating process three
Segmentation heating, keeps the temperature 35min under the conditions of 350 DEG C and 750 DEG C of temperature first respectively, etc. temperature protected when rising to 1300 DEG C again
Warm 35min；
S3, grinding prepare lime powder: by blocky calcium oxide, crushing grinding is at short grained calcium oxide in mortar, so
It is sieved afterwards using 120 mesh round-hole meshes, screenings is put into continuation fine grinding 15min or more in agate mortar, makes it through 220 mesh
Round-hole mesh, now grinds current, prevents water suction rotten；
S4, compacting oxidation calcium tablet: under 8MPa pressure, compacting diameter is 55mm, with a thickness of the oxidation calcium tablet of 1.5mm, is protected
Press 4min.
Detection system basic structure in the present embodiment is with embodiment 3, the difference is that as shown in figure 4, the present embodiment
Detection system further includes the furnace body 100 for heating melting furnace slag, and test sample pipe 110,110 top of test sample pipe are equipped in furnace body 100
Equipped with feed inlet 120, it is equipped with silicon molybdenum heating rod 130 on the outside of test sample pipe 110, clinker is in being added to test sample pipe 110 by silicon
The heating fusing of molybdenum heating rod 130, reaction member 200 are that setting is additionally provided with control on 110 bottom of test sample pipe, furnace body 100
Panel 600 is additionally provided on the present embodiment Center Vent tube 300 for monitoring air-flow for controlling each operation button switch
Pressure gauge 330.
When the present embodiment is actually detected, the oxidation calcium tablet pressed is placed in reactive tank 230, and aoxidize the diameter ruler of calcium tablet
The very little diameter dimension with reactive tank 230 matches, will be after oxidation calcium tablet is placed into reactive tank 230, then is put into slot certain
The lime powder of amount, and using hairbrush by powder sweep to oxidation calcium tablet edge, make lime powder filling completely oxidation calcium tablet with
Minim gap between 230 inner wall of reactive tank prevents subsequent clinker from directly being contacted from oxidation calcium tablet edge with conductive plate 220；It will match
The clinker of good constant-quality is added in test sample pipe 110, the button of control panel 600 is operated, according to the program set to furnace
Slag carries out three-stage high temperature melting (with embodiment 1), then operates the start button of control panel 600, makes 110 bottom of test sample pipe
Open, clinker be discharged into immediately below reactive tank 230 in contacts with oxidation calcium tablet and starts to react, detection starts, detection process and
It is above-mentioned essentially identical.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (10)
1. a kind of method for detecting clinker reactivity worth, it is characterised in that: clinker reactivity worth detection system is used, according to
Following steps carry out:
S1, slag system configuration；
S2, slag system heating treatment: it weighs the clinker quantitatively prepared and is put into heating furnace and heat, make slag specimen uniform melt；
S3, grinding prepare lime powder: by blocky calcium oxide crushing grinding at short grained calcium oxide, then using 100-
150 mesh round-hole meshes are sieved, and screenings continues fine grinding 15min or more, make it through 200-250 mesh round-hole mesh；
S4, compacting oxidation calcium tablet: under 8-12MPa pressure, it is 50-60mm that lime powder, which is pressed into diameter, with a thickness of 1-
The oxidation calcium tablet of 2mm, and pressure maintaining 3-5min；
S5, will start to detect in oxidation calcium tablet and clinker investment detection system.
2. a kind of method for detecting clinker reactivity worth according to claim 1, it is characterised in that: the tool of step S5
Body process is as follows:
A1, oxidation calcium tablet is put into the reactive tank (230) of detection system, the pressure detecting instrument (400) of lower section is zeroed out
Operation；
A2, the clinker of fusing is poured into reactive tank (230) with aoxidize calcium tablet and contact, start timing at this time；
A3, increased pressure value is recorded according to pressure detecting instrument (400), is pressurized by compress cell, makes pressure detecting instrument
(400) record reaches required steady state value, ensures that oxidation calcium tablet stress is identical；
A4, when electrical signal detector (500) detects that electric signal changes, stop timing, recording reacting time, with oxidation
The ratio between the thickness of calcium tablet and time are reaction rate, can characterize the ability of slag system dissolution calcium oxide.
3. a kind of method for detecting clinker reactivity worth according to claim 1, it is characterised in that: clinker reactivity
Energy detection system includes reaction member (200) and electrical signal detector (500), and reaction member (200) includes the insulation board of side
(210) and the conductive plate of bottom (220), insulation board (210) and conductive plate (220) are surrounded for accommodating the anti-of clinker and calcium oxide
It answers slot (230), is equipped with electrode (240) in reactive tank (230), electrode (240) passes through insulation board (210) and electrical signal detector
(500) it is connected, conductive plate (220) is also connected with electrical signal detector (500).
4. a kind of method for detecting clinker reactivity worth according to claim 3, it is characterised in that: clinker reactivity
Energy detection system further includes pressure detecting instrument (400), and pressure detecting instrument (400) is set to conductive plate (220) bottom, for detecting
The pressure that conductive plate (220) is born.
5. a kind of method for detecting clinker reactivity worth according to claim 3, it is characterised in that: reaction member
(200) top is equipped with the open plate (250) for being used to open/closing reactive tank (230).
6. a kind of method for detecting clinker reactivity worth according to claim 4, it is characterised in that: clinker reactivity
Energy detection system further includes compress cell, and compress cell includes the snorkel (300) that one end extends into reactive tank (230).
7. a kind of method for detecting clinker reactivity worth according to claim 6, it is characterised in that: snorkel
(300) side is equipped with blowdown pipe (320), and snorkel (300) is equipped with screw piston bar far from the one end of reactive tank (230)
(310), screw piston bar (310) is matched with snorkel (300) inner thread and is merged for squeezing snorkel (300) interior gas.
8. a kind of method for detecting clinker reactivity worth according to claim 3, it is characterised in that: reaction member
(200) outside cladding is provided with insulating layer (140).
9. a kind of method for detecting clinker reactivity worth according to claim 3, it is characterised in that: reaction member
(200) outside is provided with microwave applicator (700).
10. according to a kind of described in any item methods for detecting clinker reactivity worth of claim 3-9, it is characterised in that:
Electrode (240) in reactive tank (230) is set to above conductive plate (220) at 5-10mm.
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| CN110606734A (en) * | 2019-10-30 | 2019-12-24 | 成都先进金属材料产业技术研究院有限公司 | Method for preparing inclusion rod |
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