CN107290364A - The application process of the online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation - Google Patents
The application process of the online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation Download PDFInfo
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- CN107290364A CN107290364A CN201610193903.5A CN201610193903A CN107290364A CN 107290364 A CN107290364 A CN 107290364A CN 201610193903 A CN201610193903 A CN 201610193903A CN 107290364 A CN107290364 A CN 107290364A
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- G01N23/222—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis using neutron activation analysis [NAA]
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Abstract
The application process of the online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation：Its measurement apparatus is that neutron source is placed between upper belt and lower belt, one gamma detector is fixed on the top of upper belt and cement slurry, neutron exposure with the atomic nucleus in cement slurry to having an effect after cement slurry on belt, the ray received is converted into pulse signal transmission and gives the processing of Multi channel spectrum analysis device by gamma detector, effective information is uploaded to host computer by Multi channel spectrum analysis device, calculates the sulfurbased NPK value of cement slurry according to respective formula by host computer.Because it is SO finally to calculate obtained sulfurbased NPK value3Content and K2O、Na2The ratio relation of O content sum, so not influenceed by the total amount of cement slurry on belt；The bulk shielding protection of instrument uses two-layer structure, and internal layer is lead, and outer layer is polyethylene, reduces the usage amount to lead, reduces the cost and weight of instrument；Detector shield uses two-layer structure, and outer layer is polyethylene, and internal layer is cadmium plate, and the influence by neutron to gamma detector is minimized, and improves the analysis precision of instrument.
Description
Technical field
The present invention relates to a kind of online cement slurry sulfurbased NPK analytical instrument, in particular relate to a kind of neutron activation and divide online
Analyse the instrument of the sulfurbased NPK in cement slurry.
Background technology
In the new dry process production calcination system of manufacture of cement, the sulphur that raw material are brought into can form sulfuric acid alkali with alkalization conjunction,
And be fixed in clinker and expelled from kiln with clinker, but if sulfur content exceeded alkali can chemical combination quantity, will with raw material
CaO formation CaSO4Or and C2S formation sulphur calcium silicates（2C2S·CaSO4）So as to cause skinning.In addition produced in calcination process
Raw sulfurous gas can not discharged by the part that alkaline components absorb with flue gas, and also environment is polluted.Therefore, cement is controlled
The content of sulphur and alkaline components is necessary issues that need special attention during cement production process in raw material.It is general with sulfurbased NPK come
Weigh the aequum of sulphur and alkali.
And the sulfurbased NPK value of cement slurry is determined at present, it is the artificial sampling from belt by the way of, then by sample
By the method for chemical analysis, wherein SO is obtained3And K2O、Na2O content, then by calculating SO3Content and K2O、Na2O contains
The ratio of sum is measured to obtain the sulfurbased NPK value of cement slurry.
And the sulfurbased NPK value of cement slurry is obtained by chemical analysis methods and calculating by manual sampling to laboratory,
There are the processes such as drying, grinding, screening in process, be that several hours are later when final basicity value result comes out
, there is serious hysteresis quality in thing, quality inspection afterwards can only be played a part of to production technology in time, not have guidance
The effect of technique adjustment.
There is presently no the instrument that on-line analysis sulfurbased NPK value can be directly carried out to cement slurry on belt.
The content of the invention
The defect existed for original technology, the present invention proposes a kind of instrument for the sulfurbased NPK for being capable of on-line analysis cement slurry
Device.
The concrete technical scheme taken of the present invention is：
Shielding follower 5 is installed between the upper belt 2 at practical application scene and lower belt 1 by measurement bay 11, detector
Shield 13 is installed in the upper belt 2 at practical application scene and the top of cement slurry by measurement bay 11.Measurement bay 11 leads to
The belt holder 10 for crossing scene is fixed, and the outside of measurement bay 11 is provided with protective cover 12.The inside of detector shield 13 is equipped with gamma-rays
Detector 6, gamma ray detector 6 couples with Multi channel spectrum analysis device 8, and Multi channel spectrum analysis device 8 couples with host computer 9.
12 points of protective cover is two layers, and the material of protective cover internal layer 122 is lead, and the material of protective cover outer layer 121 is polyethylene.
13 points of detector shield is two layers, and the material of detector shield internal layer 132 is cadmium, detector shielding volume surrounding
131 material is polyethylene.
Shield and neutron source 3 is housed in follower 5, shielding follower 5 carries out shielding protection to neutron source 3.Shield follower 5
The wedge-shaped collimating aperture 4 that can be closed is provided with, when collimating aperture is opened, neutron ray can only irradiate in certain scope, work as standard
After straight hole is closed, entirety is radiationless to leak.When in use, wedge-shaped collimating aperture 4 is opened wide, and the neutron that neutron source 3 is sent shines upwards
Penetrate, the cement slurry of radiation in upper belt 2 and thereon, neutron interacts with the atomic nucleus in cement slurry, atom
Core is by neutron activation, from stable ground state transition to unstable excitation state, and atomic nucleus is activated from exciting when different elements
The Characteristic γ ray of different-energy can be discharged during state de excitation.
The gamma-rays received is converted into pulse signal transmission to Multi channel spectrum analysis device 8, multiple tracks by gamma ray detector 6
Energy spectrum analysis device 8 transmits the impulse amplitude come to gamma ray detector 6 and is identified, and forms transverse axis correspondence radial energy respectively
The power spectrum of amount, longitudinal axis correspondence ray number, and identify from power spectrum correspondence element sulphur Characteristic γ ray energy peak and potassium element
The peak area S1 and S2, S3 of Characteristic γ ray energy peak, sodium element Characteristic γ ray energy peak, Multi channel spectrum analysis device 8 will be with
Upper data S1, S2, S3 are transferred to host computer 9, and host computer 9 calculates the sulfurbased NPK value P of cement slurry according to following formula：
S1 is the peak area of element sulphur Characteristic γ ray energy peak in formula, and S2 is the peak face of potassium element Characteristic γ ray energy peak
Product, S3 is the peak area of sodium element Characteristic γ ray energy peak, and A, B, C, D, E, F are undetermined coefficient, by known sulfurbased NPK
Different cement slurries measure, by measurement result S1, S2, S3 numerical value and corresponding sulfurbased NPK value using conventional non-thread
Property return processing obtain.
Beneficial effect：
Because finally calculating the ratio relation that obtained sulfurbased NPK value is SO3 contents and K2O, Na2O content sum, not by
The influence of the total amount of cement slurry on belt.
The bulk shielding protection of instrument uses two-layer structure, and internal layer is that lead is used to shield gamma-rays, and outer layer is that polyethylene is used
To shield neutron.Lead is placed in internal layer, the usage amount to lead can be reduced, the cost and weight of instrument is reduced.
Detector shield uses two-layer structure, and detector shielding volume surrounding is that polyethylene is used to absorb slow neutron and slowing down
Fast neutron, makes to be less than 0.5eV through the neutron energy after polyethylene；Detector shield internal layer is cadmium plate, and energy is less than
0.5eV neutron has extremely strong sink effect.By the two-layer structure of detector shield, the influence by neutron to gamma detector
Minimize, improve the analysis precision of instrument.
Brief description of the drawings
Fig. 1 is the structural representation of instrument of the present invention
Fig. 2 is the section of structure of protective cover
Fig. 3 is the section of structure of detector shield
In figure：1 time belt, 2 upper belts, 3 neutron sources, 4 wedge-shaped collimating apertures, 5 shielding followers, 6 gamma detectors, 8
Multi channel spectrum analysis device, 9 host computers, 10 belt holders, 11 measurement bays, 12 protective covers, 13 detector shields, 121 prevent
Shield outer layer, 122 protective cover internal layers, 131 detectors shielding volume surrounding, 132 detector shield internal layers.
Embodiment
It is described with reference to the accompanying drawings the instrument structure and application method of the present invention.
As shown in Figure 1：
Shielding follower 5 is installed between the upper belt 2 at practical application scene and lower belt 1 by measurement bay 11, detector
Shield 13 is installed in the upper belt 2 at practical application scene and the top of cement slurry by measurement bay 11.Measurement bay 11 leads to
The belt holder 10 for crossing scene is fixed, and the outside of measurement bay 11 is provided with protective cover 12.The inside of detector shield 13 is equipped with gamma-rays
Detector 6, gamma ray detector 6 couples with Multi channel spectrum analysis device 8, and Multi channel spectrum analysis device 8 couples with host computer 9.
Shield and neutron source 3 is housed in follower 5, shielding follower 5 carries out shielding protection to neutron source 3.Shield follower 5
The wedge-shaped collimating aperture 4 that can be closed is provided with, when collimating aperture is opened, neutron ray can only irradiate in certain scope, work as standard
After straight hole is closed, entirety is radiationless to leak.When in use, wedge-shaped collimating aperture 4 is opened wide, and the neutron that neutron source 3 is sent shines upwards
Penetrate, the cement slurry of radiation in upper belt 2 and thereon, neutron interacts with the atomic nucleus in cement slurry, atom
Core is by neutron activation, from stable ground state transition to unstable excitation state, and atomic nucleus is activated from exciting when different elements
The Characteristic γ ray of different-energy can be discharged during state de excitation.
As shown in Figure 2：12 points of protective cover is two layers, and the material of protective cover internal layer 122 is lead, the material of protective cover outer layer 121
Matter is polyethylene.
As shown in Figure 3：13 points of detector shield is two layers, and the material of detector shield internal layer 132 is cadmium, detector
The material for shielding volume surrounding 131 is polyethylene.
The application method of instrument is as follows：
The gamma-rays received is converted into pulse signal transmission to Multi channel spectrum analysis device 8, multiple tracks power spectrum by gamma ray detector 6
Analyzer 8 transmits the impulse amplitude come to gamma ray detector 6 and is identified, and forms transverse axis correspondence ray energy respectively, indulges
The power spectrum of axle correspondence ray number, and identify from power spectrum correspondence element sulphur Characteristic γ ray energy peak and potassium element feature γ
The peak area S1 and S2, S3 at ray energy peak, sodium element Characteristic γ ray energy peak.Form power spectrum and automatic peak-seeking, calculating peak
Area is Multi channel spectrum analysis device 8 from functional, and its technology is well known in industry.Multi channel spectrum analysis device 8 is by above number
Host computer 9 is transferred to according to S1, S2, S3, host computer 9 calculates the sulfurbased NPK value P of cement slurry according to following formula：
S1 is the peak area of element sulphur Characteristic γ ray energy peak in formula, and S2 is the peak face of potassium element Characteristic γ ray energy peak
Product, S3 is the peak area of sodium element Characteristic γ ray energy peak, and A, B, C, D, E, F are undetermined coefficient, by known sulfurbased NPK
Different cement slurries measure, by measurement result S1, S2, S3 numerical value and corresponding sulfurbased NPK value using conventional non-thread
Property return processing obtain.
Application example：
Neutron source 3 is from the Cf-252 isotopic sources that activity is 10 micrograms；
Gamma detector 6 is from NaI (Tl) scintillator detector that crystalline size is 100 × 100mm of Ф；
The high-speed figure Multi channel spectrum analysis that Multi channel spectrum analysis device 8 is developed from Dandong Dongfang Measurement ＆ Control Technology Co., Ltd.
Device；
Host computer 9 is from conventional industrial computer；
The material of protective cover internal layer 122 is lead, and thickness is 2 millimeters；
The material of protective cover outer layer 121 is polyethylene, and thickness is 10 centimetres；
The material of detector shield internal layer 132 is cadmium, and thickness is 0.5 millimeter；
The material of detector shielding volume surrounding 131 is polyethylene, and thickness is 5 centimetres；
The commission machining of measurement bay 11 factory makes；
The cement slurry of sulfurbased NPK value known to 20 kinds is measured using instrument model machine, by nonlinear regression obtain A, B,
C, D, E numerical value is respectively：A=4.2568, B=6.2428, C=4.9871, D=5.2159, E=7.2858, F=0.01092.
Claims (3)
1. the application process of the online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation, it is characterised in that：
The online cement slurry sulfurbased NPK analyzer of described transmission-type neutron activation includes：Shield follower（5）Pass through measurement bay
（11）It is installed in the upper belt at practical application scene（2）With lower belt（1）Between, detector shield（13）Pass through measurement bay
（11）It is installed in the upper belt at practical application scene（2）With the top of cement slurry；Measurement bay（11）Pass through the belt at scene
Frame（10）It is fixed, measurement bay（11）Outside is provided with protective cover（12）；Detector shield（13）Inside is equipped with gamma-ray detection
Device（6）, gamma ray detector（6）With Multi channel spectrum analysis device（8）Connection, Multi channel spectrum analysis device（8）With host computer（9）Connection
Connect；
Shield follower（5）In be equipped with neutron source（3）, shield follower（5）To neutron source（3）Carry out shielding protection；Shielding is defeated
Go out device（5）It is provided with the wedge-shaped collimating aperture that can be closed（4）, when collimating aperture is opened, neutron ray can only be in certain scope
Irradiation, after bore closure is collimated, entirety is radiationless to leak；
The online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation when in use, wedge-shaped collimating aperture（4）Open wide, neutron source
（3）The neutron sent irradiates upwards, radiates in upper belt（2）And cement slurry thereon, in neutron and cement slurry
Atomic nucleus interacts, and atomic nucleus is by neutron activation, from stable ground state transition to unstable excitation state, when different members
Element be activated atomic nucleus from excitation state de excitation when can discharge the Characteristic γ ray of different-energy；
Gamma ray detector（6）The gamma-rays received is converted into pulse signal transmission and gives Multi channel spectrum analysis device（8）, multiple tracks
Energy spectrum analysis device（8）To gamma ray detector（6）The impulse amplitude that transmission comes is identified, and forms transverse axis correspondence ray respectively
The power spectrum of energy, longitudinal axis correspondence ray number, and identify that correspondence element sulphur Characteristic γ ray energy peak and potassium are first from power spectrum
The peak area S1 and S2, S3 of plain Characteristic γ ray energy peak, sodium element Characteristic γ ray energy peak, Multi channel spectrum analysis device（8）
Data above S1, S2, S3 are transferred to host computer（9）, host computer（9）The sulfurbased NPK value P of cement slurry is calculated according to following formula：
S1 is the peak area of element sulphur Characteristic γ ray energy peak in formula, and S2 is the peak face of potassium element Characteristic γ ray energy peak
Product, S3 is the peak area of sodium element Characteristic γ ray energy peak, and A, B, C, D, E, F are undetermined coefficient, by known sulfurbased NPK
Different cement slurries measure, by measurement result S1, S2, S3 numerical value and corresponding sulfurbased NPK value using conventional non-thread
Property return processing obtain.
2. the online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation according to claim 1, it is characterized in that：Protection
Cover（12）It is divided into two layers, protective cover internal layer（122）Material be lead, protective cover outer layer（121）Material be polyethylene.
3. the online cement slurry sulfurbased NPK analyzer of transmission-type neutron activation according to claim 1, it is characterized in that：Detection
Device shield（13）It is divided into two layers, detector shield internal layer（132）Material be cadmium, detector shielding volume surrounding（131）'s
Material is polyethylene.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356540A (en) * | 2001-11-27 | 2002-07-03 | 丹东东方测控技术有限公司 | Method and system for in-situ testing grade of big ore block by electron-air shielding radiation effect |
| US20040141585A1 (en) * | 2003-01-15 | 2004-07-22 | Proctor Raymond J. | Mineral matter analyzer apparatus and method |
| CN1831522A (en) * | 2006-04-17 | 2006-09-13 | 南京大陆中电科技股份有限公司 | On-line detection device for component of belt transport sinted mineral material based on PGNAA technology |
| CN200947088Y (en) * | 2006-04-17 | 2007-09-12 | 南京大陆中电科技股份有限公司 | System for online detecting cement material composition |
| CN101349660A (en) * | 2008-09-17 | 2009-01-21 | 丹东东方测控技术有限公司 | On-line analysis detection method of mine material iron ore grade |
| CN101671044A (en) * | 2009-09-30 | 2010-03-17 | 杭州锦江集团有限公司 | Application of PGNAA element on-line analyzer in production of aluminum oxide |
| CN101901636A (en) * | 2010-07-22 | 2010-12-01 | 中国原子能科学研究院 | Burnup measuring system for spent fuel assembly |
| CN102608141A (en) * | 2012-03-23 | 2012-07-25 | 南京龙源环保有限公司 | On-line analysis device of pulsed neutron coal element content and proximate analysis indexes |
| CN103163167A (en) * | 2011-12-15 | 2013-06-19 | 中国核动力研究设计院 | Neutron moisture gauge detector |
| US20140197321A1 (en) * | 2013-01-11 | 2014-07-17 | Joseph Bendahan | Composite gamma-neutron detection system |
| CN105092623A (en) * | 2015-08-28 | 2015-11-25 | 南京航空航天大学 | Cement sample spectrum library recipe design method based on instant gamma ray neutron activation analysis technology |
| US20160011126A1 (en) * | 2014-07-11 | 2016-01-14 | Sabia, Inc. | Prompt gamma neutron activation substance analyzers |
-
2016
- 2016-03-31 CN CN201610193903.5A patent/CN107290364A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356540A (en) * | 2001-11-27 | 2002-07-03 | 丹东东方测控技术有限公司 | Method and system for in-situ testing grade of big ore block by electron-air shielding radiation effect |
| US20040141585A1 (en) * | 2003-01-15 | 2004-07-22 | Proctor Raymond J. | Mineral matter analyzer apparatus and method |
| CN1831522A (en) * | 2006-04-17 | 2006-09-13 | 南京大陆中电科技股份有限公司 | On-line detection device for component of belt transport sinted mineral material based on PGNAA technology |
| CN200947088Y (en) * | 2006-04-17 | 2007-09-12 | 南京大陆中电科技股份有限公司 | System for online detecting cement material composition |
| CN101349660A (en) * | 2008-09-17 | 2009-01-21 | 丹东东方测控技术有限公司 | On-line analysis detection method of mine material iron ore grade |
| CN101671044A (en) * | 2009-09-30 | 2010-03-17 | 杭州锦江集团有限公司 | Application of PGNAA element on-line analyzer in production of aluminum oxide |
| CN101901636A (en) * | 2010-07-22 | 2010-12-01 | 中国原子能科学研究院 | Burnup measuring system for spent fuel assembly |
| CN103163167A (en) * | 2011-12-15 | 2013-06-19 | 中国核动力研究设计院 | Neutron moisture gauge detector |
| CN102608141A (en) * | 2012-03-23 | 2012-07-25 | 南京龙源环保有限公司 | On-line analysis device of pulsed neutron coal element content and proximate analysis indexes |
| US20140197321A1 (en) * | 2013-01-11 | 2014-07-17 | Joseph Bendahan | Composite gamma-neutron detection system |
| US20160011126A1 (en) * | 2014-07-11 | 2016-01-14 | Sabia, Inc. | Prompt gamma neutron activation substance analyzers |
| CN105092623A (en) * | 2015-08-28 | 2015-11-25 | 南京航空航天大学 | Cement sample spectrum library recipe design method based on instant gamma ray neutron activation analysis technology |
Non-Patent Citations (10)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局等: "《中华人民共和国国家标准GB/T29161-2012 中子活化型煤炭在线分析仪》" * |
| 刘伟波等: "中子方法快速分析水泥生料的实验装置研究", 《核电子学与探测技术》 * |
| 刘伟波等: "中子方法快速分析水泥生料的实验装置研究", 《核电子学与探测技术》, vol. 30, no. 07, 31 July 2010 (2010-07-31), pages 956 - 959 * |
| 刘显坤等: "高能射线及其屏蔽材料", 《金属功能材料》 * |
| 刘显坤等: "高能射线及其屏蔽材料", 《金属功能材料》, vol. 13, no. 01, 28 February 2006 (2006-02-28), pages 36 - 40 * |
| 刘雨人等: "中子感生瞬发γ射线在线分析技术的进展(1988～2002)", 《同位素》, vol. 16, no. 02, 31 May 2003 (2003-05-31), pages 106 - 110 * |
| 杨剑波等: "蒙特卡罗法确定水泥在线中子活化分析样品参数", 《金属矿山》 * |
| 杨剑波等: "蒙特卡罗法确定水泥在线中子活化分析样品参数", 《金属矿山》, no. 04, 30 April 2010 (2010-04-30), pages 134 - 136 * |
| 贾福全等: "一种水泥生料中子分析装置的设计", 《长春师范学院学报》 * |
| 贾福全等: "一种水泥生料中子分析装置的设计", 《长春师范学院学报》, vol. 30, no. 08, 31 August 2011 (2011-08-31), pages 63 - 65 * |
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