CN111458363A - Method for rapidly delineating titanium deposit based on handheld X-ray fluorescence analyzer - Google Patents
Method for rapidly delineating titanium deposit based on handheld X-ray fluorescence analyzer Download PDFInfo
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- CN111458363A CN111458363A CN202010316312.9A CN202010316312A CN111458363A CN 111458363 A CN111458363 A CN 111458363A CN 202010316312 A CN202010316312 A CN 202010316312A CN 111458363 A CN111458363 A CN 111458363A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—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
- G01N23/22—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
- G01N23/223—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 irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
Abstract
The application discloses a method for rapidly delineating a titanium ore deposit based on a handheld X-ray fluorescence analyzer, the method is characterized in that the handheld X-ray fluorescence analyzer is used for measuring the titanium content in a sample of a jadeite-type rutile ore of a fish card, chemical analysis results are compared, a regression equation is provided, the corrected test data can be used as a semi-quantitative or even quantitative result, the mineralization of the jadeite can be rapidly judged in the field, the construction of channel exploration and drilling engineering is guided, the rapid and convenient identification of the jadeite-type rutile ore body and the non-ore body in the field is successfully realized, the working progress is greatly accelerated, and the exploration period is shortened.
Description
Technical Field
The application relates to the technical field of mineral exploration, in particular to a method for rapidly delineating a titanium deposit based on a handheld X-ray fluorescence analyzer.
Background
The method comprises the steps of firstly, successfully developing a handheld X fluorescence analyzer (PXRF) suitable for field use in the United states in the early sixties of the twentieth century, realizing field and in-situ measurement of element content, along with technical progress, continuously improving the accuracy of the analyzer, and widely applying the analyzer in the aspects of cultural art analysis, archaeology, alloy analysis, environment, mineral exploration and the like by virtue of the advantages of in-situ, nondestructive, economic and rapid performance of the analyzer, wherein the application of the handheld X fluorescence analyzer in mineral exploration becomes a hot point of domestic and foreign research, the in-situ analysis can quickly acquire the element content of rock, and play a greater and greater role in field geological work, for example, the handheld X fluorescence analyzer is used for carrying out field analysis and measurement on natural rock, chemical exploration samples, soil sediments, water-based sediments and the like, and can realize the evaluation and investigation of abnormal rock and the investigation of mineral exploration, thereby greatly reducing the visual and obvious mineral exploration of rock, and reducing the working cost of a typical mineral exploration by using a wireless acquisition type X fluorescence analyzer to carry out field trace element analysis and trace on a large scale of a hogmbh mineral exploration trace element, such as a hogmn-hogmn (lead) model, and a hogmi (100) and a hogmi (hogmi) and a hogmi-hogmi (hogmi) and a hogmi trace element analysis instrument, and a hogmi (hogmi) and a hogmi (hogmi) and a hogmi test instrument, and a hogmi) is used for carrying out a hogmi test method for carrying out field rapid field research on-hogmi (hogmi test on-element rapid analysis and a ho.
The chemical analysis means needs to sample, send and grind the rock to 200 meshes and then analyze the rock, although the precision is high, the speed is slow, and the arrangement of exploration engineering such as drilling, groove exploration and the like in a short time can not be completed in the titanium deposit exploration process. The hand-held X-ray fluorescence analyzer has the following advantages: the method has the advantages of low cost, quick response, environmental protection and strong applicability, can quickly identify the titanium ore body in the titanium ore deposit, has important guiding and popularizing significance for exploration engineering deployment, and has certain errors in the analysis result and the actual chemical analysis result of the handheld X-ray fluorescence analyzer.
The northern Chaihu ultrahigh-pressure modification zone is located between the Qilian plot and the Chadamu plot, extends from the Shaliuhe river-wild Ma beach in the city of Dulan county of Qinghai province to the northwest direction to Xitieshan, Lvdangshan, Xishiguanxi and Yukawei zones, and has the length of about 400 km. In the process of carrying out the investigation of the mineral products of the Lloyd hills and the double-mouth hills, under the guidance of the theory of the mineral forming pedigree, the method is matched with Sulu-Dabie ultrahigh pressureThe inventor proposes a long-range view of finding large-medium durite type rutile ore deposit in the ultrahigh pressure metamorphic zone of the large diesel denier zone, and finally finds the fish card garnet type rutile ore deposit with large ore finding prospect in the fish card-iron stone seeming zone, thereby realizing breakthrough of changing the ore of the titanium ore deposit in the north edge of the diesel. Conducting pre-investigation work on the rutile ore in 2014-2015 to determine TiO of the ore deposit2The resource amount reaches large scale, and is expected to be ultra-large. In the process of the ore exploration, the specific difference of an exploration area reaches more than 400m, and mountain highways and limonite bodies are numerous, but the composition ore bodies of the limonite bodies are unknown, so that the rapid evaluation of the ore deposit is restricted.
Disclosure of Invention
In order to solve the problems, the invention provides a method for rapidly delineating a titanium ore deposit based on a handheld X-ray fluorescence analyzer, the handheld X-ray fluorescence analyzer qualitatively or semi-quantitatively obtains the content of elements based on the principle that the intensity of X-rays of different elements is in direct proportion to the content of the elements, regression analysis is carried out by combining the laboratory chemical analysis result, an element content regression equation is established, the handheld X-ray fluorescence analyzer is used for quantitatively obtaining the content of the titanium elements in the field by utilizing the equation, the position of an ore body in the titanium ore deposit is rapidly identified, and then ore exploration is rapidly and efficiently guided.
A method for rapidly delineating a titanium deposit based on a handheld X-ray fluorescence analyzer comprises the following steps:
s1, preparing a regular sample of the titanium ore sample to be detected by adopting a chemical analysis means, forming a levigated and uniformly mixed sample, and then analyzing;
s2, obtaining an X-ray spectrogram of a titanium ore sample to be detected by using a handheld X-ray fluorescence analyzer, and analyzing various elements and contents thereof in the sample to be detected;
s3, establishing a regression equation for the chemical analysis result and the analysis result of the handheld X-ray fluorescence analyzer
y＝0.42+1.38x
Wherein y represents the chemical analysis result of TiO2 in step S1, and X represents the Ti content obtained by the handheld X-ray fluorescence analyzer;
and S4, rapidly identifying the position of the titanium ore body in the field through a handheld X-ray fluorescence analyzer.
Preferably, step S4 is preceded by performing test analysis on the stability of the handheld X-ray fluorescence analyzer, including calibration of the standard sample, time stability analysis, and stability analysis of repeated tests, and determining the optimal test time and the optimal number of tests.
Preferably, the optimal test time is >5s and the optimal number of tests is > 3.
Preferably, in step S4, before the test of the sample to be tested, the sample to be tested is observed, the test position is defined for the sample with obvious alteration and mineralization, each sample to be tested is tested at 3 points, and the measurement time of each point is 15-20 seconds.
Preferably, in step S3, there is a significant correlation between the chemical analysis result and the analysis result of the handheld X-ray fluorescence analyzer, and the correlation coefficient R is 0.83.
Preferably, in step S4, when the Ti content obtained by the test of the handheld X-ray fluorescence analyzer is 0-0.42%, the Ti corresponds to non-punica granatum; when the Ti content is 0.42-0.78%, the corresponding durite type rutile poor ore body is obtained; when the Ti content is more than 0.78 percent, the ore body corresponds to the durite rutile industrial ore body.
Has the advantages that: the invention provides a method for rapidly delineating a titanium ore deposit based on a handheld X-ray fluorescence analyzer, which is characterized in that the handheld X-ray fluorescence analyzer is used for measuring the titanium content in a sample of a jadeite-type rutile ore of a fish card, chemical analysis results are compared, a regression equation is provided, the corrected test data can be used as a semi-quantitative or even quantitative result, the mineralization of the jadeite can be rapidly judged in the field, the construction of channel exploration and drilling engineering is guided, the rapid and convenient identification of the jadeite-type rutile ore body and the non-ore body in the field is successfully realized, the working progress is greatly accelerated, and the exploration period is shortened.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a graph of experimental data on instrument time stability;
FIG. 2 is a graph of experimental data for single-point repeated stability analysis of an instrument;
FIG. 3 is a diagram of the Ti content and chemical analysis of TiO for a hand-held X-ray fluorescence analyzer2A content two-dimensional scattergram;
FIG. 4 is a diagram illustrating the reliability verification of the portable X-ray fluorometer in the detection tank for delineating the ore body and the mineralizer;
fig. 5 shows the application of portable X-ray fluorometer to delineating and mineralizing the ore body in the borehole of the exploration line of the gacajette rutile ore No. 10 (the grade in the dark color represents the analysis result of a chemical sample, and the grade in the light color represents the test result of a handheld X-ray fluorometer).
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the method for rapidly delineating the titanium ore deposit based on the handheld X-ray fluorescence analyzer, provided by the embodiment of the invention, a regression equation is established for the analysis result of the chemical sample and the analysis result of the handheld X-ray fluorescence analyzer, and finally the position of the ore body is rapidly identified in the field through the handheld X-ray fluorescence analyzer. Compared with the traditional technical method, the method can save the workload and the expenditure and has stronger practical value. The embodiment of the invention relates to the following important steps and key links:
(1) principle of operation
The instrument used for the test was an Olympus innov-X model hand-held X-ray fluorescence analyzer. The analysis principle of the instrument is that the primary X-ray emitted by an X-ray tube irradiates a sample, so that elements in the sample are excited. When the excited electron transits from a high energy level to a low energy level, X-rays are emitted, and the energy level structure of each atom is different, so that the X-rays emitted from the atoms of each element have a specific energy, which is called characteristic X-rays. For a sample to be detected, a certain X-ray spectrogram is obtained in the mode, so that various elements and the content of the elements in the sample to be detected are analyzed.
(2) Has problems in that
The hand-held X-ray fluorescence analyzer is limited by hardware and software conditions, is only a qualitative and semi-quantitative element analyzer, and can only give a rough judgment on the content of chemical elements in a geological sample. There are two possibilities for the test values given by the analyzer: firstly, a given value has a certain error compared with a real value, but a qualitative test has no problem; secondly, the error of the given measured value is large, and if the error value is large enough, the result is a wrong result, and the error can be misled to a user. It is important to note that: when a hand-held X-ray fluorescence analyzer is used to test a sample, only a small area of the probe is tested, i.e., a small spot of several tens of microns, and only one test is performed on the sample surface. It also gives a value which is only one constituent of the element on the surface of this very small site and therefore does not represent the content of the element in the whole sample, nor is it consistent with the results of laboratory tests conducted after normal sample preparation, forming of finely ground and homogenized samples. When a geological sample is tested by using the handheld X-ray fluorescence analyzer, the same sample is tested at a plurality of points, and comprehensive evaluation is carried out. The occurrence state of titanium in a titanium ore deposit, particularly in a durite-type rutile ore deposit, is relatively uniform, and the semi-quantitative content of a sample to be tested can be obtained by a multipoint testing and averaging method.
(3) Sample testing
In order to ensure the accuracy of test data, before large-scale test, the stability of the instrument is tested and analyzed, including standard sample correction, time stability analysis and repeated test stability analysis, and the optimal test time (>5s) (see fig. 1) and the optimal test times (>3 times) (see fig. 2) are determined.
Before the sample is tested, the sample is observed, the test position of the sample with obvious alteration and mineralization phenomena is defined, in order to avoid the contingency, each sample is generally tested at 3 points, and the measurement time of each point is about 15-20 seconds. The fresh rock surface was relatively leveled at the time of measurement. In order to guarantee the quality of the test data.
The 445 chemical samples studied were analyzed using a hand-held X-ray fluorescence analyzer (PXRF).
(4) Establishment of analysis result and regression equation
There is a significant correlation between the results of the chemical analysis and the analysis of the hand-held X-ray fluorescence analyzer, with a correlation coefficient R of 0.83. Adding TiO into the mixture2The two-dimensional scattergram was generated with the chemical analysis result of (a) as a dependent variable y and the Ti content obtained by the handheld X-ray fluorescence analyzer as an independent variable X, and the best fit equation of the two was obtained as y 0.42+1.38X (see fig. 3).
When the content of Ti obtained by the test of the handheld X-ray fluorescence analyzer is 0-0.42%, corresponding to non-punica granatum; when the content is 0.42-0.78%, the ore body corresponds to the durite type rutile poor ore body; when the content is more than 0.78%, the corresponding garnet is a garnet-type rutile industrial ore body.
Examples of mineral exploration applications in the sounding project and in the drilling project are provided below.
Example 1
And (3) groove detection engineering verification: two existing analytical result probing tanks TC162-1 and TC167 are selected, a handheld X-ray fluorescence analyzer is used for field test in the constructed probing tanks, sampling points are uniformly sampled for 6 times in each chemical sample sampling range, the average value is taken and substituted into a fitting equation to obtain a fitting result, and the fitting result is consistent with an ore body and a mineralizer body defined by laboratory chemical analysis results (figure 4).
And (3) field slot exploring engineering application: according to the above results, a groove-detecting work was selectively performed, about 4000 cubic meters of the groove-detecting work was reduced, and both the ore body and the lean ore body confined according to the hand-held X-ray fluorescence analyzer were verified to be reliable.
Example 2
Drilling engineering applications: according to the application effect of the earth surface channel exploration engineering, a handheld X-ray fluorescence analyzer is consciously used for rapidly testing the content of the Ti-durite in a core on site in the construction process of ZK1001 holes, rapidly delineating an ore body and a mineralized body, guiding the construction of the drilling engineering in real time, and then carrying out chemical analysis to reflect that the average values of the ore body, the lean ore body and the like delineated by the two methods are relatively consistent (figure 5).
The invention provides a method for rapidly delineating a titanium ore deposit based on a handheld X-ray fluorescence analyzer, which is characterized in that a unitary quadratic equation (y is 0.42+1.38X) is established according to a laboratory chemical analysis result and an analysis result of the handheld X-ray fluorescence analyzer, the rapid and convenient field identification of a limonite rutile ore body and a non-ore body is successfully realized through the equation, and then, in the tank exploration work deployment and the drilling construction, the workload and the analysis and test cost are saved, the exploration efficiency of the rutile ore deposit is greatly improved, the method improves the qualitative and semi-quantitative handheld X-ray fluorescence analyzer to a quantitative index, and overcomes the problems of fine granularity of the titanium ore deposit and incapability of identifying the position of the ore body by naked eyes. The invention has the advantages of no need of sample preparation in the process of finding the mine, short testing time, energy conservation, environmental protection, convenience and rapidness, can effectively shorten the mining exploration period and reduce the exploration risk compared with the traditional exploration method, and is a novel indispensable exploration auxiliary means and method.
In addition, the above-mentioned serial numbers of the embodiments of the present application are merely for description, and do not represent the merits of the embodiments. In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A method for rapidly delineating a titanium deposit based on a handheld X-ray fluorescence analyzer is characterized by comprising the following steps:
s1, preparing a regular sample of the titanium ore sample to be detected by adopting a chemical analysis means, forming a levigated and uniformly mixed sample, and then analyzing;
s2, obtaining an X-ray spectrogram of a titanium ore sample to be detected by using a handheld X-ray fluorescence analyzer, and analyzing various elements and contents thereof in the sample to be detected;
s3, establishing a regression equation for the chemical analysis result and the analysis result of the handheld X-ray fluorescence analyzer
y＝0.42+1.38x
Wherein y represents TiO in step S12X represents the Ti content obtained by the handheld X fluorescence analyzer;
and S4, rapidly identifying the position of the titanium ore body in the field through a handheld X-ray fluorescence analyzer.
2. The method for rapidly delineating a titanium ore deposit on the basis of a handheld X-ray fluorescence analyzer in claim 1, wherein step S4 is preceded by performing test analysis on the stability of the handheld X-ray fluorescence analyzer, including standard sample correction, time stability analysis and repeated test stability analysis, and determining the optimal test time and the optimal test times.
3. The method for rapidly delineating a titanium deposit on the basis of a handheld X-ray fluorescence analyzer according to claim 2, wherein the optimal test time is >5s and the optimal test times is > 3.
4. The method for rapidly delineating a titanium ore deposit based on the handheld X-ray fluorescence analyzer according to claim 1, wherein in step S4, before a titanium ore sample to be tested is tested, the titanium ore sample to be tested is observed, a test position is defined for the sample with obvious alteration and mineralization phenomena, each titanium ore sample to be tested is tested at 3 points, and the measurement time of each point is 15-20 seconds.
5. The method for rapidly delineating a titanium ore deposit based on a handheld X-ray fluorescence analyzer in accordance with claim 1, wherein in step S3, there is significant correlation between the chemical analysis result and the analysis result of the handheld X-ray fluorescence analyzer, and the correlation coefficient R is 0.83.
6. The method for rapidly delineating a titanium ore deposit based on a handheld X-ray fluorescence analyzer according to claim 1, wherein in step S4, when the Ti content obtained by the handheld X-ray fluorescence analyzer test is 0-0.42%, the Ti corresponds to non-punica granatum; when the Ti content is 0.42-0.78%, the corresponding durite type rutile poor ore body is obtained; when the Ti content is more than 0.78 percent, the ore body corresponds to the durite rutile industrial ore body.
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| CN112525939A (en) * | 2020-12-10 | 2021-03-19 | 合肥工业大学 | Open-air PXRF core testing method capable of keeping data accuracy |
| CN114428094A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Analysis method and application of rock core mineral composition |
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