CN107167336A - A kind of sampling method of desulfurization lime stone - Google Patents
A kind of sampling method of desulfurization lime stone Download PDFInfo
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- CN107167336A CN107167336A CN201710304763.9A CN201710304763A CN107167336A CN 107167336 A CN107167336 A CN 107167336A CN 201710304763 A CN201710304763 A CN 201710304763A CN 107167336 A CN107167336 A CN 107167336A
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1006—Dispersed solids
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Abstract
The invention discloses a kind of sampling method of desulfurization lime stone, which solve in the prior art for lime stone sample representation is poor, testing result is inaccurate, the technical problem that to gather and process sample workload big and cumbersome etc..The lime stone sample of collection is representative, it is ensured that the accuracy of testing result.Technical scheme is：Comprise the following steps：1) according to the size of motor vehicle load lime stone amount, basic sampling unit number is divided；According to batch lime stone amount size, sampling unit number and compartment number, sample number is determined；2) according to the regulation of sampling standard, the quality of gross sample and increment is determined, sample point is determined, then starts the sampling of lime stone；3) by the lime stone sample sealer sealed storage of acquirement, and record lime stone sample quality, quarrying lime stone batch and sample position be identified record.
Description
Technical field
Present invention relates particularly to a kind of sampling method of desulfurization lime stone.
Background technology
Lime stone calcium-based desulfurization technique is the widest sulfur removal technology of domestic application, and the country has more than 90% coal unit to adopt
With calcium-based desulfurization technique.For lime stone calcium-based desulfurization technique, the quality of absorbent lime stone is influence desulfurization performance
One of key factor.At present, from the point of view of desulfurization operation situation, desulfurization is caused because the quality of absorbent lime stone is not tight to check on
System deterioration, degradation problem situation it is very common；Therefore desulfurization has been attracted great attention with lime stone inspection of quality, and
The sample of gathering and processing of lime stone is the important step in inspection of quality.
But because quadrat method standard is not gathered and processed accordingly by the country, the method for lime stone inspection of quality is of all kinds, detection
Quality is also uneven.From the point of view of the actual conditions of domestic power plant, the method for sampling of lime stone is mostly simple grab sample, sternly
Lack normative again, the sample representativeness of acquirement is poor, and testing result is inaccurate, and considerable damage is caused to power plant.In addition, by
High in the material hardness of lime stone, lack of homogeneity, the difficulty for obtaining representative sample is big.Meanwhile, the usage amount of lime stone
Greatly, and originate it is unstable, cause the quality stability of lime stone poor, gather and process sample workload big and cumbersome.Desulfurization lime stone
Sample is gathered and processed as desulfurizing agent clearing link and the important component of quality management, whether representative sample gathers and processes, directly closed
It is tied to examination, operating cost, the control of desulfurization operation effect of absorbent.
In summary, in the prior art for lime stone sample representation is poor, testing result is inaccurate, gather and process sample workload
The technical problem of big and cumbersome grade, still lacks effective solution.
The content of the invention
For technical problem present in above-mentioned prior art, it is an object of the invention to provide a kind of desulfurization lime stone
Sampling method.This method carries out taking for lime stone sample for the top of the means of transports such as train, automobile and lime clitter, gathers
Lime stone sample it is representative, it is ensured that the accuracy of testing result.
In order to solve the above technical problems, the technical scheme is that：
A kind of sampling method of desulfurization lime stone, comprises the following steps：
1) according to the size of motor vehicle load lime stone amount, basic sampling unit number is divided；According to batch lime stone amount
Size, sampling unit number and compartment number, determine sample number；
2) according to the regulation of sampling standard, the quality of gross sample and increment is determined, sample point is determined, then starts lime stone
Sampling；
3) by the lime stone sample sealer sealed storage of acquirement, and the quality of lime stone sample, quarrying lime stone batch are recorded
Record is identified with sample position.
Further, step 1) in, the division methods of sampling unit number are：Using 1000 tons of lime stones as a basic sampling
Unit, basic sampling unit number m calculation formula is
Wherein, M is is sampled lime stone in batches, ton；M0For basic sampling unit lime stone amount, 1000 tons are taken.
Further, step 1) in, the determination method of sample number is：
When batch lime stone amount is less than 1000t, 10 or more than 10 increments are gathered；When compartment number is equal to or more than 10
During section, often save compartment and gather 1 or more than 1 increment；When the compartment number for the more than one sampling unit of sample number for needing to gather
When, each compartment needs the sample number gathered to be increment sum divided by compartment number, if there is remainder after removing, gathers remainder increment
Compartment systems approach or random device selection.
Further, step 1) in, the determination method of each basic sampling unit sample number, when automobile or train transport,
The minimum sample number of each basic sampling unit is 20, and each basic sampling unit of lime clitter is 20.
Further, step 1) in, when in batches more than 1000t, the calculation formula of sample number is：
In formula：N-sample number should be adopted；
N-table 1 provides sample number；
M-be sampled batch, unit is ton (t)；
1000-basic sampling unit amount, unit is ton (t).
Further, step 2) in, increment matter method for determination of amount is：
When nominal maximum particle size is 50mm, minimum increment quality is 3.0kg；
When nominal maximum particle size is 25mm, minimum increment quality is 1.5kg；
When nominal maximum particle size is 13mm, minimum increment quality is 0.8kg；
When nominal maximum particle size is less than 6mm, minimum increment quality is 0.5kg.
Further, minimum increment quality is calculated as follows：m0In=0.06d, formula, m0For minimum increment quality,
Kg, d are by the nominal maximum particle size of quarrying lime stone, mm.
Further, step 2) in, the determination method of sample point is：
Directly from during the top sampling of train or automobile bodies, sample point is evenly distributed on working face；
The sample point of lime clitter is located on the new working face of each layer formed during heap heap or heap unloading；Or unloaded positioned at just
Under, on the small lime stone heap that does not merge with main heap；
In the case of not new working face, sample point is located at below lime stone surface at 0.2-0.5m.
Further, step 3) in, the sealer is does not absorb water, air-locked sealing container.
Application of the sampling method of above-mentioned desulfurization lime stone in lime stone sampling.
Beneficial effects of the present invention are：
The present invention lime stone sampling method collection lime stone sample it is representative, it is ensured that testing result it is accurate
Property.
Nominally maximum particle size is bigger, and sampling is less susceptible to uniformly, difference be determined according to different sampling particle diameters in the present invention
Sampling quality, can ensure sampling representativeness on the premise of, reduce increment quality, improve analysis accuracy.
On the new working face of formation sample, can avoid lime stone exposure in atmosphere, cause in lime stone it is some into
Divide the change of content, it is more representative.
Number of samples is determined according to the total amount of the quantity in compartment and lime stone, the uniformity and representativeness of sampling is improved.
Brief description of the drawings
Fig. 1 is the process chart of the lime stone sampling method of the present invention.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Nominal maximum particle size refers to corresponding closest to the sieve of (but being not more than) 5% with cumulative oversize quality percentage
Screen size.
As shown in Figure 1：A kind of sampling method of desulfurization lime stone, comprises the following steps：
1) according to the size of motor vehicle load lime stone amount, basic sampling unit number is divided；According to batch lime stone amount
Size, sampling unit number and compartment number, determine sample number；
2) according to the regulation of sampling standard, the quality of gross sample and increment is determined, sample point is determined, then starts lime stone
Sampling；
3) by the lime stone sample sealer sealed storage of acquirement, and the quality of lime stone sample, quarrying lime stone batch are recorded
Record is identified with sample position.
It is specific sampling method below：
1st, using 1000t as a basic sampling unit, a collection of lime stone can be as a sampling unit, and such as a row train is loaded
Lime stone；Also m sampling unit can be divided as the following formula：
M- is sampled lime stone batch, t；M0- basic sampling unit lime stone amount, takes 1000t.
2nd, the determination for sample number of sampling
Often 1 increment is at least taken in section compartment, available system method choice or is selected with random device.
When batch lime stone amount is less than 1000t, 10 increments are at least taken.
When compartment number is equal to or more than 10 section, often saves compartment and at least take 1 increment.
When the corresponding compartment number of the more than one basic sampling unit of the gross sample number for needing to gather, the son that each compartment should be adopted
Sample number is equal to gross sample number divided by compartment number, has remainder after such as removing, then remainder increment should be distributed in whole sampling unit.It is distributed remainder
The compartment available system method choice of increment is selected with random device.
The minimum sample number of the basic sampling unit of lime stone is listed in table 1.
The minimum sample number of basic sampling unit of table 1
Sample number when batch is less than 1000t
Sample number is successively decreased in proportion according to by the regulation sample number of table 1 when batch is less than 1000t, but can not at least be less than table 2
Stated number.
The batch of table 2 is less than 1000t minimum sample number
Batch is more than 1000t sample number
1) when using sample by the gross as a sampling unit, sample number is calculated by formula (1)：
In formula：N-sample number should be adopted；
N-table 1 provides sample number；
M-be sampled batch, unit is ton (t)；
1000-basic sampling unit amount, unit is ton (t).
3rd, increment quality determines as shown in table 3：
Minimum increment quality under the part granularity of table 3
| Nominal maximum particle size, mm | Increment quality references value, kg |
| 50 | 3.0 |
| 25 | 1.5 |
| 13 | 0.8 |
| ≤6 | 0.5 |
Increment quality can be calculated by formula (2)：
M=0.06 (2)；
In formula：M- minimum increment quality, kg；D- is sampled the nominal maximum particle size of lime stone, mm.
4th, the determination of increment sample point
When directly top is sampled from train or automobile bodies, increment should be evenly arranged on working face as far as possible, to be noted
It is intended in processing procedure (such as entrucking) bulk accumulation (for example, near car angle or car wall) caused by isolation.
Lime clitter sampling should on each layer new sheet face during heap heap or heap unloading and just unloaded, not with
Carried out on the small lime stone heap that main heap merges；Or carried out during lime stone is migrated in smaller vehicle such as automobile.
Under non-new face condition, 0.2m superficial layer should be first removed during sampling.
5th, the preservation of lime stone sample
After lime stone sample is taken, sampling unit has permanent unique knowledge immediately by sample storage into sealing unit
Do not represent；And sample preparation, chemical examination are carried out in a short time；Otherwise, sample quality should be indicated, storage is in the cool.
The corresponding sampling system of the method for sampling, including：Sampling unit, division unit, data storage cell, verification unit
And sealing unit；Wherein：
Division unit, for the size according to motor vehicle load lime stone amount, divides sampling unit number；And according to
Lime stone amount size, sampling unit number and compartment number are criticized, calculates, determine sample number, be connected with data storage cell；
Data storage cell, for storing, calling current transportation batch, load lime stone amount, batch lime stone amount size, car
Railway carriage or compartment number, coach number and coherent sampling standard regulation；
Verification unit, calls the sampling standard regulation of the storage of data storage cell, determines the quality of gross sample and increment, really
Determine sample point, and be transmitted to sampling unit；
Sampling unit, the result of calculation of acceptance inspection unit is excavated to coal sample, weighed and sampled；
Sealing unit, the coal sample for storing sampling unit selection, record quality, coal mining batch, sample position are entered to it
Row is identified one by one.
Sampling unit, including control module, Weighing module and sampling module, wherein, control module driving sampling module pair
Coal sample excavated, sample after, Weighing module is weighed to the coal sample of collection, and control module reads the mass number of verification unit
According to control Weighing module weighs the coal sample for requiring weight.
Sealing unit, including sealer and mark module, wherein, sealer is does not absorb water, air-locked sealing container, mark
Know affiliated sampling unit, affiliated increment, current transportation batch, compartment number that module reads control module and data storage cell
Mesh, batch coal amount size and sampling weight information, for carrying out relevant information storage, mark to corresponding sealer.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of sampling method of desulfurization lime stone, it is characterised in that：Comprise the following steps：
1) according to the size of motor vehicle load lime stone amount, basic sampling unit number is divided；According to batch lime stone amount size,
Sampling unit number and compartment number, determine sample number；
2) according to the regulation of sampling standard, the quality of gross sample and increment is determined, sample point is determined, then starts taking for lime stone
Sample；
3) by the lime stone sample sealer sealed storage of acquirement, and the quality of lime stone sample, quarrying are recorded lime stone batch and take
Sample position is identified record.
2. sampling method according to claim 1, it is characterised in that：Step 1) in, the division methods of sampling unit number
For：Using 1000 tons of lime stones as a basic sampling unit, basic sampling unit number m calculation formula is：
<mrow>
<mi>m</mi>
<mo>=</mo>
<msqrt>
<mfrac>
<mi>M</mi>
<msub>
<mi>M</mi>
<mn>0</mn>
</msub>
</mfrac>
</msqrt>
</mrow>
Wherein, M is is sampled lime stone in batches, ton；M0For basic sampling unit lime stone amount, 1000 tons are taken.
3. sampling method according to claim 1, it is characterised in that：Step 1) in, the determination method of sample number is：
When batch lime stone amount is less than 1000t, 10 or more than 10 increments are gathered；When compartment number is equal to or more than 10 sections
When, often save compartment and gather 1 or more than 1 increment；When the compartment number for the more than one sampling unit of sample number for needing to gather,
Each compartment needs the sample number gathered to be increment sum divided by compartment number, if there is remainder after removing, collection remainder increment
Compartment systems approach or random device selection.
4. sampling method according to claim 1, it is characterised in that：Step 1) in, each basic sampling unit sample number
Determination method, when automobile or train transport, the minimum sample number of each basic sampling unit is 20, lime clitter it is each
Basic sampling unit is 20.
5. sampling method according to claim 4, it is characterised in that：Step 1) in, when in batches more than 1000t, sample number
Calculation formula be：
<mrow>
<mi>N</mi>
<mo>=</mo>
<mi>n</mi>
<msqrt>
<mfrac>
<mi>M</mi>
<mn>1000</mn>
</mfrac>
</msqrt>
<mo>;</mo>
</mrow>
In formula：N-sample number should be adopted；
Sample number specified in n-claim 4；
M-be sampled batch, ton；
1000-basic sampling unit amount, ton.
6. sampling method according to claim 1, it is characterised in that：Step 2) in, increment matter method for determination of amount is：
When nominal maximum particle size is 50mm, minimum increment quality is 3.0kg；
When nominal maximum particle size is 25mm, minimum increment quality is 1.5kg；
When nominal maximum particle size is 13mm, minimum increment quality is 0.8kg；
When nominal maximum particle size is less than 6mm, minimum increment quality is 0.5kg.
7. sampling method according to claim 1, it is characterised in that：Minimum increment quality is calculated as follows：
m0In=0.06d, formula, m0For minimum increment quality, kg；D is by the nominal maximum particle size of quarrying lime stone, mm.
8. sampling method according to claim 1, it is characterised in that：Step 2) in, the determination method of sample point is：
Directly from during the top sampling of train or automobile bodies, sample point is evenly distributed on working face；
The sample point of lime clitter is located on the new working face of each layer formed during heap heap or heap unloading；Or positioned at just unloading, not
On the small lime stone heap merged with main heap；
In the case of not new working face, sample point is located at below lime stone surface at 0.2-0.5m.
9. sampling method according to claim 1, it is characterised in that：Step 3) in, the sealer not absorb water, it is impermeable
The sealing container of gas.
10. application of any described sampling methods of claim 1-9 in lime stone sampling.
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| CN201710304763.9A CN107167336A (en) | 2017-05-03 | 2017-05-03 | A kind of sampling method of desulfurization lime stone |
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| CN201710304763.9A CN107167336A (en) | 2017-05-03 | 2017-05-03 | A kind of sampling method of desulfurization lime stone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111562133A (en) * | 2019-03-08 | 2020-08-21 | 浦项(张家港)不锈钢股份有限公司 | Raw material acceptance sampling method |
| CN112729902A (en) * | 2020-12-15 | 2021-04-30 | 安徽六国化工股份有限公司 | Manual sampling method for ore heap |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111562133A (en) * | 2019-03-08 | 2020-08-21 | 浦项(张家港)不锈钢股份有限公司 | Raw material acceptance sampling method |
| CN111562133B (en) * | 2019-03-08 | 2023-09-22 | 浦项(张家港)不锈钢股份有限公司 | Raw material acceptance sampling method |
| CN112729902A (en) * | 2020-12-15 | 2021-04-30 | 安徽六国化工股份有限公司 | Manual sampling method for ore heap |
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