CN112446602A - Quality control and evaluation method of chemical sample for uranium resource amount estimation - Google Patents
Quality control and evaluation method of chemical sample for uranium resource amount estimation Download PDFInfo
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- CN112446602A CN112446602A CN202011310312.4A CN202011310312A CN112446602A CN 112446602 A CN112446602 A CN 112446602A CN 202011310312 A CN202011310312 A CN 202011310312A CN 112446602 A CN112446602 A CN 112446602A
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 38
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000003908 quality control method Methods 0.000 title claims abstract description 30
- 239000000126 substance Substances 0.000 title claims abstract description 30
- 238000011156 evaluation Methods 0.000 title claims abstract description 24
- 239000000523 sample Substances 0.000 claims abstract description 93
- 239000000843 powder Substances 0.000 claims abstract description 26
- 239000012496 blank sample Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000013441 quality evaluation Methods 0.000 claims abstract description 11
- 239000011435 rock Substances 0.000 claims description 8
- 238000011157 data evaluation Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 description 5
- 230000033558 biomineral tissue development Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06395—Quality analysis or management
Abstract
The invention belongs to the field of uranium mine geological exploration, and particularly relates to a quality control and evaluation method of a chemical sample for uranium resource amount estimation, which comprises the following steps: collecting and numbering field repeated samples; selecting and numbering a powder repeated sample; blank sample collection and numbering; evaluating field repeated sample data; evaluating the data of the powder repeated samples; and (4) evaluating blank sample data. The method provided by the invention aims at the problems of insufficient resource quantity estimation accuracy and poor reliability caused by unrepresentative core sample collection, sample pollution in the sample crushing process and the like, effectively monitors the quality of the core sample collection, division, sample pollution in the sample crushing process and the like, synchronously realizes data quality evaluation, effectively improves the accuracy and reliability of uranium deposit resource quantity estimation, and is simple to operate, high in evaluation speed and wide in application range.
Description
Technical Field
The invention belongs to the field of uranium ore geological exploration, and particularly relates to a quality control and evaluation method of a chemical sample for uranium resource amount estimation.
Background
The uranium resource estimation is an essential link in the research and production process of uranium deposit, and the accuracy and the reliability of the resource estimation are determined by 3 factors of the representativeness of sample collection, whether pollution is caused in the crushing and dividing process and the accuracy of chemical analysis.
For a long time, the geological survey specifications of China only provide quality control and evaluation methods of 'internal inspection' and 'external inspection' for errors possibly generated in the laboratory analysis process, namely accuracy. And only the operation requirements are specified in the sample collection and crushing and division processes which can cause data problems, and a quality control method and an evaluation method are not provided.
In the actual operation process, the principle of 1/2 split cores or 1/4 split cores is generally adopted when core samples are collected, uranium mineralization often develops in a vein shape or an irregular dip dyeing shape, and irregular split cores can cause the samples to be rich or lean, so that the final resource amount estimation result is influenced.
The samples collected in the field need to be subjected to division for multiple times after being crushed in a laboratory, the division process is not strict, and if the samples are not sufficiently mixed, the divided parts to be subjected to chemical analysis are rich or poor, so that the final resource quantity estimation result is influenced.
Different samples are polluted mutually due to dust or unclean crushing device cleaning during crushing, so that ore components are mixed into non-ore or high-grade components are mixed into low-grade ore, and the final resource amount estimation result is influenced.
In view of the above situation, it is imperative to establish an effective quality control and evaluation method for performing effective quality control and evaluation on the sample collection and pulverization and shrinkage process which may cause data problems
Disclosure of Invention
The invention aims to provide a quality control and evaluation method of a chemical sample for uranium resource amount estimation, aiming at the problems of insufficient accuracy and poor reliability of resource amount estimation caused by unrepresentative core sample collection, sample pollution in a sample crushing process and the like, so that a core chemical sample can be accurately and reliably used for uranium resource amount estimation.
The technical scheme for realizing the purpose of the invention is as follows: a quality control and evaluation method of a chemical sample for uranium resource quantity estimation comprises the following steps:
step (1), field repeated sample collection and numbering;
step (2), powder repeated sample selection and numbering;
step (3), blank sample collection and numbering;
step (4), evaluating field repeated sample data;
step (5), evaluating powder repeated sample data;
and (6) evaluating blank sample data.
Further, the number of the field repeated samples collected in the step (1) is not less than 3% of the total number of the core samples.
Further, the selected quantity of the repeated samples of the powder in the step (2) is not less than 3 percent of the total quantity of the core samples.
Further, the blank sample collection amount in the step (3) is not less than 6% of the total number of the core samples.
Further, the formula for evaluating the field repeat sample data in the step (4) is as follows:
wherein, aiAs a result of the original analysis of the ith sample, biAnd (3) obtaining an analysis result of the field repeated sample of the ith sample, wherein N is the total number of the field repeated samples, and CV% is a data quality control value.
Further, the field repeated sample data in the step (4) is evaluated as follows: for hydrothermal uranium deposit, if the CV% value is less than or equal to 20%, the data quality evaluation is acceptable; if the CV% value is greater than 20%, the data quality is evaluated as unacceptable.
Further, the formula for evaluating the data of the powder repeated sample in the step (5) is as follows:
wherein, aiAs a result of the original analysis of the ith sample, bi'is the analysis result of the ith sample powder repeat, N is the total number of powder repeat, CV'% is data matrixThe quantity control value.
Further, the evaluation criteria of the powder repeated sample data in the step (5) are as follows: for hydrothermal uranium deposit, if the CV'% value is less than or equal to 10%, the data quality evaluation is acceptable; if the CV'% value is greater than 10%, the data quality is evaluated as unacceptable.
Further, the blank data evaluation criteria in step (6) are as follows: recording the proportion of the overrun sample as N%, and if the blank sample is a natural rock sample and N% is less than or equal to 5%, evaluating the data quality as acceptable; if N% is more than 5%, the data quality is evaluated to be unacceptable; if the blank is a commercial sample and N% ═ 0, the data quality is rated as acceptable; if N% is greater than 0, the data quality is evaluated as unacceptable.
The invention has the beneficial technical effects that:
1. the invention relates to a quality control and evaluation method of a chemical sample for uranium resource amount estimation, which establishes an effective quality control and evaluation method aiming at the common sample processing problems in the field core sample collection process and the sample division process for resource amount estimation and the pollution problem in the sample crushing process in a laboratory;
2. according to the quality control and evaluation method for the chemical sample for uranium resource amount estimation, disclosed by the invention, the effective quality monitoring is carried out on sample pollution and the like in the processes of core sample collection, division and sample crushing, the data quality evaluation is synchronously realized, and the accuracy and reliability of uranium deposit resource amount estimation are effectively improved;
3. the quality control and evaluation method of the chemical sample for uranium resource amount estimation is simple to operate, high in evaluation speed and wide in application range.
Drawings
Fig. 1 is a flowchart of a quality control and evaluation method for a chemical sample for uranium resource amount estimation provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the invention provides a method for quality control and evaluation of a chemical sample for uranium resource amount estimation, which includes the following steps:
and (1) carrying out field repeated sample collection and numbering.
And (3) field repeated sample collection, adopting a principle of relatively random sampling and fully considering mineralization strength, alteration strength and lithologic change, synchronously collecting another 1/2 sample while collecting a 1/2 sample if the sampling is 1/2 split core sampling, and synchronously collecting another 1/4 sample on the same 1/2 side if the sampling is 1/4 split core sampling. The collection quantity of field repeated samples is not less than 3 percent of the total quantity of the core samples.
And numbering the field repeated samples according to the sequence of the basic samples without independent numbering to form the field repeated samples.
And (2) selecting and numbering the powder repeated samples.
And selecting a repeated powder sample, selecting a core sample which is not less than 3% of the total number of the core sample by adopting a completely random principle, and selecting the sample of the other part of rock powder after the reduction while selecting the powder sample to be chemically analyzed.
And numbering the powder repeated samples according to the sequence of the basic samples without independent numbering to form the powder repeated samples.
And (3) blank sample collection and numbering.
And blank sample collection, namely selecting non-mineralized rocks with consistent or similar lithologies and natural rock samples or artificial samples with low and uniform uranium content as blank samples according to the basic lithology of uranium mineralized rocks in the working area. A separate sample was taken for chemical analysis to determine no uranium mineralization. The system collects the natural rock as a blank sample or selects a commercial blank sample to ensure that the uranium content is lower than the detection limit of a chemical analysis instrument. The blank sample collection quantity is not less than 6% of the total number of the core samples.
And (4) blank sample numbering, namely randomly inserting the blank samples into the basic sample sequence, numbering according to the basic sample sequence, and not numbering independently to form the blank samples.
And (4) evaluating field repeated sample data.
And substituting all the chemical analysis data of the field repeated samples and the original chemical analysis data of the basic samples into the following formula to obtain a CV% value, and evaluating the data quality based on the CV% value.
Wherein, aiAs a result of the original analysis of the ith sample, biAnd (3) obtaining an analysis result of the field repeated sample of the ith sample, wherein N is the total number of the field repeated samples, and CV% is a data quality control value.
Different types of ore deposits have different standards, and for a hydrothermal uranium ore deposit, if the CV% value is less than or equal to 20%, the data quality is evaluated to be acceptable; if the CV% value is greater than 20%, the data quality is evaluated as unacceptable and cannot be used for resource amount estimation.
And (5) evaluating the data of the powder repeated sample.
The chemical analysis data of the entire powder replicate sample and the original chemical analysis data of the base sample were substituted into the following formula to obtain a CV% value, and the data quality was evaluated based on the CV% value.
Wherein, aiAs a result of the original analysis of the ith sample, bi'is the analysis result of the ith sample powder repeat sample, N is the total number of powder repeat samples, and CV'% is the data quality control value.
Different types of ore deposits have different standards, and for hydrothermal uranium ore deposits, if the CV'% value is less than or equal to 10%, the data quality is evaluated to be acceptable; if the CV'% value is greater than 10%, the data quality is evaluated as unacceptable and cannot be used for resource amount estimation.
And (6) evaluating blank sample data.
And calculating the average value of the chemical analysis results of all blank samples, and adding 5 times of the detection limit of the instrument and equipment to the average value to serve as the data validity warning limit.
For the blank sample, which is a natural rock sample, the overrun sample ratio is recorded as N%,
if the N% is less than or equal to 5%, evaluating the data quality as acceptable;
if N% > 5%, the data quality is evaluated as unacceptable and cannot be used directly for resource quantity estimation.
For the blank, which is a commercial sample, the overrun sample ratio is recorded as N%,
if N% ═ 0, the data quality was rated as acceptable;
if N% > 0, the data quality is evaluated as unacceptable and cannot be used directly for resource amount estimation.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the examples, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (9)
1. A quality control and evaluation method of a chemical sample for uranium resource quantity estimation is characterized by comprising the following steps:
step (1), field repeated sample collection and numbering;
step (2), powder repeated sample selection and numbering;
step (3), blank sample collection and numbering;
step (4), evaluating field repeated sample data;
step (5), evaluating powder repeated sample data;
and (6) evaluating blank sample data.
2. The quality control and evaluation method for the chemical samples used for uranium resource quantity estimation according to claim 1, wherein the number of field repeated sample collection in the step (1) is not less than 3% of the total number of core samples.
3. The quality control and evaluation method for the chemical samples used for uranium resource estimation according to claim 1, wherein the selected number of the repeated samples of the powder in the step (2) is not less than 3% of the total number of the core samples.
4. The quality control and evaluation method for the chemical samples used for uranium resource amount estimation according to claim 1, wherein the blank sample collection amount in the step (3) is not less than 6% of the total number of core samples.
5. The method for quality control and evaluation of chemical samples for uranium resource quantity estimation according to claim 1, wherein the formula for field repeat sample data evaluation in step (4) is as follows:
wherein, aiAs a result of the original analysis of the ith sample, biAnd (3) obtaining an analysis result of the field repeated sample of the ith sample, wherein N is the total number of the field repeated samples, and CV% is a data quality control value.
6. The quality control and evaluation method for the chemical samples used for uranium resource estimation according to claim 5, wherein the field repeat sample data evaluation in the step (4) is: for hydrothermal uranium deposit, if the CV% value is less than or equal to 20%, the data quality evaluation is acceptable; if the CV% value is greater than 20%, the data quality is evaluated as unacceptable.
7. The method for quality control and evaluation of chemical samples for uranium resource quantity estimation according to claim 1, wherein the formula for evaluating the repeated sample data of the powder in the step (5) is as follows:
wherein, aiFor the ith sampleAnalysis result, bi'is the analysis result of the ith sample powder repeat sample, N is the total number of powder repeat samples, and CV'% is the data quality control value.
8. The quality control and evaluation method for the chemical samples used for uranium resource estimation according to claim 7, wherein the evaluation criteria of the powder repeat sample data in the step (5) are as follows: for hydrothermal uranium deposit, if the CV'% value is less than or equal to 10%, the data quality evaluation is acceptable; if the CV'% value is greater than 10%, the data quality is evaluated as unacceptable.
9. The method for quality control and evaluation of chemical samples for uranium resource quantity estimation according to claim 1, wherein the blank sample data evaluation criterion in the step (6) is as follows: recording the proportion of the overrun sample as N%, if the blank sample is a natural rock sample, and N% is less than or equal to 5%, evaluating the data quality as acceptable, and if N% is more than 5%, evaluating the data quality as unacceptable; if the blank is a commercial sample, and N% > 0, the data quality is evaluated as acceptable, and if N% > 0, the data quality is evaluated as unacceptable.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031778A1 (en) * | 2022-08-11 | 2024-02-15 | 核工业北京地质研究院 | Method for determining mining value of alaskite-type uranium ore |
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| CN102707013A (en) * | 2012-05-24 | 2012-10-03 | 安徽中烟工业有限责任公司 | Method for evaluating processing and charging uniformity of burley tobacco |
| CN109063959A (en) * | 2018-06-22 | 2018-12-21 | 深圳弘睿康生物科技有限公司 | A kind of sample quality control analysis method and system |
| CN111157700A (en) * | 2019-12-31 | 2020-05-15 | 核工业北京地质研究院 | Sample chemical analysis result quality control method suitable for mineral resource quantity estimation |
-
2020
- 2020-11-20 CN CN202011310312.4A patent/CN112446602A/en active Pending
Patent Citations (4)
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| US4491411A (en) * | 1982-06-28 | 1985-01-01 | Mobil Oil Corporation | Exploration method for finding uranium ore bodies |
| CN102707013A (en) * | 2012-05-24 | 2012-10-03 | 安徽中烟工业有限责任公司 | Method for evaluating processing and charging uniformity of burley tobacco |
| CN109063959A (en) * | 2018-06-22 | 2018-12-21 | 深圳弘睿康生物科技有限公司 | A kind of sample quality control analysis method and system |
| CN111157700A (en) * | 2019-12-31 | 2020-05-15 | 核工业北京地质研究院 | Sample chemical analysis result quality control method suitable for mineral resource quantity estimation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024031778A1 (en) * | 2022-08-11 | 2024-02-15 | 核工业北京地质研究院 | Method for determining mining value of alaskite-type uranium ore |
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