CN102944582B - A kind of milk of lime activity degree rapid determination device - Google Patents
A kind of milk of lime activity degree rapid determination device Download PDFInfo
- Publication number
- CN102944582B CN102944582B CN201210441683.5A CN201210441683A CN102944582B CN 102944582 B CN102944582 B CN 102944582B CN 201210441683 A CN201210441683 A CN 201210441683A CN 102944582 B CN102944582 B CN 102944582B
- Authority
- CN
- China
- Prior art keywords
- cup
- milk
- lime
- arranges
- stirrer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of milk of lime activity degree rapid determination device, this device comprises and arranges casing, electric hot plate, cup, stirrer, conductance electrode, temperature sensor and instrument; Electric hot plate is arranged at the bottom of casing, and cup is placed on electric hot plate, and cup movable positioning plate is fixed, and the centre of cup arranges stirrer, and the inside circumference of cup arranges conductance electrode and temperature sensor, and employing activity geometrical clamp is fixed respectively.In cup, add the deionized water of 200-400ml, draw 2-5ml milk of lime working sample by small dimension transfer pipet or disposable sample sipper tube and add fast in cup.Start, with manual time-keeping, at a 10-30 time period second optional time point as the reading duration, to record its conductivity value.This determinator can operate at normal temperatures, utilizes mensuration to obtain milk of lime conductivity value, characterizes the size of milk of lime activity degree.Finding speed is fast, and easy and simple to handle, easily control, accuracy is high, reproducible.
Description
Technical field
The invention belongs to inorganic salts technical field, relate to a kind of for milk of lime activity degree rapid determination device.
Background technology
Milk of lime is the raw material preparing winnofil with carbonizatin method.Manufacture the nano-calcium carbonate with definite shape and size, except need controlling other factors, lime milk concentration and activity degree also have very large relation.There are some researches show, when other process conditions are constant, adopt active higher milk of lime to participate in carbonation reaction and can obtain the nano-calcium carbonate that specific surface area is higher, particle diameter is less.And to weigh one of important indicator of milk of lime active mass be activity degree.Activity degree depends primarily on particle diameter and the crystallinity of calcium hydroxide, and calcium hydroxide particle diameter is less, and crystallinity is poorer, and its reactivity is larger.Otherwise activity degree is just less.
Because active lime is comparatively early applied to steel industry, so in early days for the detection of milk of lime activity degree, mainly with reference to the method for inspection about Thermal Activity of Metallurgical Lime degree in steel industry, main points are as follows:
By a certain amount of sample aquation, use certain density hydrochloric acid, by the calcium hydroxide neutralization produced in lime hydration process simultaneously.To off-test from adding people's lime sample, to carry out under the state of certain stirring rate all the time, and the isocenter in aquation N-process must be kept at any time.The consumption of hydrochloric acid during accurate recording lucky 10min.The activity degree of lime is represented with the milliliter number of 10min consumption hydrochloric acid.The chemical equation of key reaction is:
CaO+H
2O=Ca(OH)
2；
Ca(OH)
2+2HCl=CaCl
2+2H
2O。
Important technological parameters requires:
Hydrochloric acid: 4mol/L; Phenolphthalein indicator: 5g/L; Stir instrument: power is not less than 100W, rotating speed 250-300r/min; Sample granularity: 1-5mm; With coolant-temperature gage: 40 ± 1 DEG C.
But no matter this detection method is at steel industry or in calcium carbonate industry, and its result accuracy is all very low, and repeatability is also poor.There is correlative study to show, be somebody's turn to do the mensuration that " National Standard Method " is applicable to general low activity activity of lime, and be not suitable for active lime.In addition, the too low or addition of phenolphthalein concentration has also had a strong impact on the judgement of titration end-point very little, causes experimental error too large.
Along with the development of winnofil industry, increasing concern has focused on the mensuration of milk of lime activity degree.
The people such as Xue Mianmian adopt phenolphthalein as indicator, react with oxalic acid in shortage and milk of lime, compare the activity of heterogeneity milk of lime by the mensuration system required time that reddens.The cardinal principle of the method foundation is: when adding oxalic acid in milk of lime, i.e. oxalic calcium precipitate, and the calcium hydroxide of solid phase is constantly by dissolving also oxalic calcium simultaneously, and its reaction is as follows:
The dissolving of wherein reacting calcium hydroxide solid in (1) is the slowest, therefore whole reaction velocity depends on this step.When reacting at the beginning, major part calcium hydroxide has little time to dissolve and reacts with oxalic acid, therefore reaction system is at that time in acid (phenolphthalein is colourless), assaying reaction starts just can reflect to the time that phenolphthalein reddens and the speed of calcium hydroxide dissolution velocity also namely obtains the activity degree of milk of lime.
But we find that the method exists a lot of problem equally in actual applications.According to requirement mentioned in document " mensuration of milk of lime activity degree ", we measure the milk of lime sample in workshop.In most cases, when adding the oxalic acid solution containing phenolphthalein indicator, reaction system becomes redness immediately, at all cannot timing reading.Even if there is a few cases can reading, but the time be all within 10s, and repeatability is very poor, and during operation, artificial subjective dependence is comparatively strong, and error is larger.
For the deficiency of above method, there are the settling volume of people's proposition milk of lime and rotary viscosity to characterize the size of its activity degree, all achieve good effect.
The test of settling volume is: the principle different according to the particle settling velocity in a liquid of different-grain diameter, different densities.Its basic process is: testing sample is put in certain liquid and makes certain density suspending liquid, sedimentation is there is in the particle in suspending liquid under the effect of gravity or centrifugal force, the settling velocity that particle is large, density is large is very fast, and settling volume is little, and the milk of lime activity degree of representative is just low; Otherwise the settling velocity that particle is little, density is little is comparatively slow, settling volume is large, and representative milk of lime activity degree is just high.This detection method is easy to implement, and easily operates, but it can only judge the milk of lime sample that activity degree gap is larger, and precision is not high, has some limitations.
Rotary viscosity is also a kind of new method that this has just grown up for several years.They think, in lime cream soliquoid, calcium hydroxide particle diameter is less, and specific surface area is larger, in conjunction with moisture more, so as the moisture just corresponding minimizing of disperse phase, thus cause the increase of system apparent viscosity, that is, viscosity is higher, and activity degree is larger.This method also can measure the activity degree of milk of lime sample quickly and easily, but its accuracy temperature influence is comparatively large, requires that the temperature error scope of testing liquid is no more than 0.1 DEG C, is then difficult to ensure this point with the laboratory condition of current enterprise.
These two kinds of methods are all with the activity degree of physical method indirectly testing milk of lime above, although method is simple, also more extensive in sector application.But these two kinds of method combined influence factors are many, and test philosophy is not yet ripe, the result drawn also is difficult to convincing.
In sum, so far, not yet can successfully develop one simply, fast, milk of lime activity degree method of testing and device accurately and reliably.
Summary of the invention
Object of the present invention is exactly: for existing technical matters, and provide a kind of easy and simple to handle, easily control, accuracy is high, reproducible milk of lime activity degree rapid determination device.
The object of the invention is to be realized by following technical proposals:
A kind of milk of lime activity degree rapid determination device, is characterized in that: comprise and arrange casing, electric hot plate, cup, stirrer, conductance electrode, temperature sensor and instrument; Electric hot plate is arranged at the bottom of casing, and cup is placed on electric hot plate, and cup movable positioning plate is fixed, and the centre of cup arranges stirrer, and the inside circumference of cup arranges conductance electrode and temperature sensor, and employing activity geometrical clamp is fixed respectively.
Above-described stirrer adopts connector to be connected with motor.
Above-described motor is numerical-control motor, adopts wire and Instrument connection.
Above-described conductance electrode and temperature sensor adopt wire and Instrument connection respectively.
Above-described movable positioning plate is placed in and is fixed on the support plate of casing.
Above-described casing arranges dodge gate, and described dodge gate arranges instrument, loose-leaf and knocker; Described instrument external power supply.
Above-described cup capacity is 600-800ml.
Above-described agitator speed is 110-200r/min.
The principle of work of this device:
Stirrer, conductance electrode and temperature sensor are put into cup, stirrer and motor is fixed with connector, be placed in by cup on electric hot plate, cup movable positioning plate is fixed.Conductance electrode and temperature sensor are separately fixed at movable geometrical clamp.The deionized water of 200-400ml is added in cup, connect determinator power supply, open instrument and motor, milk of lime sample 2-5ml is drawn by small dimension transfer pipet or disposable sample sipper tube, add fast in cup, control temperature, between 20-30 DEG C, each measure temperature error and is no more than ± 1 DEG C, and starts with manual time-keeping; At 10-30 seconds time periods optional time point as the reading duration, record its conductivity value; Repetitive operation measures 3-5 times, the mean value of end product power taking conductivity value.
The advantage of this device and good effect:
This milk of lime activity degree rapid determination device, can measure at normal temperatures, and finding speed is fast, and easy and simple to handle, easily control, accuracy is high, reproducible.
Accompanying drawing explanation
Fig. 1: be the structural representation of this device.
In figure, the implication of each label representative is as follows:
1-dodge gate; 2-instrument/power supply; 3-loose-leaf; 4-casing; The movable geometrical clamp of 5-; 6-motor; 7-connector; 8-stirrer; 9-conductance electrode; 10-temperature sensor; 11-cup; 12-electric hot plate; 13-movable positioning plate; 14-support plate; 15-knocker.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described in detail.
Embodiment 1
This determinator arranges casing 4, electric hot plate 12, cup 11, stirrer 8, conductance electrode 9, temperature sensor 10 and instrument 2; Electric hot plate 12 is arranged at the bottom of casing 4, cup 11 is placed on electric hot plate 12, cup 11 movable positioning plate 13 is fixed, capacity is that cup 11 centre of 600-800ml arranges stirrer 8, the inside circumference of cup 11 arranges conductance electrode 9 and temperature sensor 10, and employing activity geometrical clamp 5 is fixed respectively.Stirrer 8 adopts connector 7 to be connected with motor.Rotating speed is that the numerical-control motor 6 of 110-200r/min is connected with instrument 2 with wire.Conductance electrode 9 and temperature sensor 10 adopt wire to be connected with instrument 2 respectively.Movable positioning plate 13 is placed in and is fixed on the support plate 14 of casing 4.Casing 4 arranges dodge gate 1, and dodge gate 1 arranges loose-leaf 3 and knocker 15.Instrument 2 external power supply.
During work, stirrer 8, conductance electrode 9 and temperature sensor 10 are put into cup 11, is placed in by cup 11 on electric hot plate 12, cup 11 movable positioning plate 13 is fixed.With connector 7, stirrer 8 and motor 6 are fixed, conductance electrode 9 and temperature sensor 10 are separately fixed on movable geometrical clamp 5.The deionized water of 200-400ml is added in cup 11, connect determinator power supply, open instrument 2 and motor 6, control rotating speed is 110-200r/min, draw milk of lime sample 2-5ml by small dimension transfer pipet or disposable sample sipper tube, add fast in cup 11, control temperature is between 20-30 DEG C, each mensuration temperature error is no more than ± and 1 DEG C, and start with manual time-keeping; At 10-30 seconds time periods optional time point as the reading duration, record its conductivity value; Repetitive operation measures 3-5 times, the mean value of end product power taking conductivity value.
Claims (1)
1. a milk of lime activity degree rapid determination device, is characterized in that: comprise and arrange casing (4), electric hot plate (12), cup (11), stirrer (8), conductance electrode (9), temperature sensor (10) and instrument (2); Electric hot plate (12) is arranged at the bottom of casing (4), cup (11) is placed on electric hot plate (12), cup (11) movable positioning plate (13) is fixed, the centre of cup (11) arranges stirrer (8), the inside circumference of cup (11) arranges conductance electrode (9) and temperature sensor (10), and employing activity geometrical clamp (5) is fixed respectively;
Described stirrer (8) adopts connector (7) to be connected with motor (6);
Described motor (6) is numerical-control motor, and motor (6) adopts wire to be connected with instrument (2);
Described conductance electrode (9) and temperature sensor (10) adopt wire to be connected with instrument (2) respectively;
Described movable positioning plate (13) be placed in be fixed on casing (4) support plate (14) on;
Described casing (4) arranges dodge gate (1), and described dodge gate (1) arranges instrument (2), loose-leaf (3) and knocker (15);
Described instrument (2) external power supply;
Described cup (11) capacity is 600-800ml;
Described stirrer (8) rotating speed is 110-200r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210441683.5A CN102944582B (en) | 2012-11-08 | 2012-11-08 | A kind of milk of lime activity degree rapid determination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210441683.5A CN102944582B (en) | 2012-11-08 | 2012-11-08 | A kind of milk of lime activity degree rapid determination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102944582A CN102944582A (en) | 2013-02-27 |
| CN102944582B true CN102944582B (en) | 2016-01-20 |
Family
ID=47727544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210441683.5A Active CN102944582B (en) | 2012-11-08 | 2012-11-08 | A kind of milk of lime activity degree rapid determination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102944582B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869042B (en) * | 2014-03-05 | 2016-01-06 | 安颖智 | A kind of verifying attachment of intelligent activity of lime and control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105688U (en) * | 1990-07-16 | 1992-05-27 | 中国建筑材料科学研究院 | Express-analysis device for free calcium oxide content in cement chamotte |
| CN203053905U (en) * | 2012-11-08 | 2013-07-10 | 广西华纳新材料科技有限公司 | Quick lime milk activity degree determination device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62116249A (en) * | 1985-11-15 | 1987-05-27 | Mitsubishi Heavy Ind Ltd | Method for detecting scale quantity |
-
2012
- 2012-11-08 CN CN201210441683.5A patent/CN102944582B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105688U (en) * | 1990-07-16 | 1992-05-27 | 中国建筑材料科学研究院 | Express-analysis device for free calcium oxide content in cement chamotte |
| CN203053905U (en) * | 2012-11-08 | 2013-07-10 | 广西华纳新材料科技有限公司 | Quick lime milk activity degree determination device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102944582A (en) | 2013-02-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101699282B (en) | Device for measuring acid/rock reaction dynamics parameters of acid liquid systems with different viscosities | |
| CN102798647B (en) | Method and device for automatic determination of lime activity by temperature-increasing method | |
| CN203053905U (en) | Quick lime milk activity degree determination device | |
| CN102944582B (en) | A kind of milk of lime activity degree rapid determination device | |
| CN103922428B (en) | A kind of method utilizing inactivated nickel catalyst preparing high-purity sulfuric acid nickel | |
| CN106645122A (en) | Determination method of content of zirconium in uranium-zirconium alloy | |
| CN204214880U (en) | A kind of microcomputer pH value instrument | |
| CN203658300U (en) | Tester for determining scale inhibitor performance by using conductivity method | |
| CN102928478B (en) | Method for fast determining activity degrees of lime milk | |
| CN104316561A (en) | Active lime apparent digestion conversion rate measurement device | |
| CN109490398A (en) | The double electrolytic experiment detection devices of the quick-fried performance of glassed steel squama and detection method | |
| CN101672845A (en) | Immunoassay method for antibodies labeled with zinc-oxide quantum dots by stripping voltammetry | |
| CN104020169A (en) | Chemical detection method for dissolved organic matters in organic fertilizer | |
| CN201429441Y (en) | Aluminium powder-evolved gas measurement apparatus | |
| CN2105688U (en) | Express-analysis device for free calcium oxide content in cement chamotte | |
| CN103257172A (en) | Limestone activity determination and detection apparatus | |
| CN106525926B (en) | A method of noradrenaline bitartrate content is measured using B-Z chemical oscillating reaction | |
| CN204536329U (en) | A kind of measurement mechanism of intelligent activity of lime | |
| CN106198671B (en) | Electrode compares test method and multipurpose test system | |
| CN109975200A (en) | A kind of agent on crack resistance of concrete ion erosion performance test methods and device | |
| CN104345119B (en) | The method for quick of amido in a kind of nylon66 fiber polymkeric substance | |
| CN207908453U (en) | A kind of multi-functional compound titration platform | |
| CN102393441A (en) | Super absorbent polymer and measuring method of super absorbent polymer in hygienic product | |
| CN201000419Y (en) | Cylinder type constant temperature water bathing tank for medicine dissolving instrument | |
| CN110702847A (en) | Method for quickly measuring sulfate radical content of vanadium battery electrolyte through temperature titration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 530103 No.29, Ganwei street, Ganwei Town, Wuming District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Warner New Material Co.,Ltd. Address before: 530103 No.29, Ganwei street, Ganwei Town, Wuming County, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: GUANGXI HUANA NEW MATERIALS TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A rapid measuring device for the activity of lime milk Effective date of registration: 20220715 Granted publication date: 20160120 Pledgee: Guangxi Guihui Financing Guarantee Co.,Ltd. Pledgor: Guangxi Warner New Material Co.,Ltd. Registration number: Y2022450000115 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |