CN103234798B - High-uniformity quantitative splitting and subpackaging technology of standard coal sample - Google Patents
High-uniformity quantitative splitting and subpackaging technology of standard coal sample Download PDFInfo
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- CN103234798B CN103234798B CN201310163018.9A CN201310163018A CN103234798B CN 103234798 B CN103234798 B CN 103234798B CN 201310163018 A CN201310163018 A CN 201310163018A CN 103234798 B CN103234798 B CN 103234798B
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Abstract
The invention discloses a high-uniformity quantitative splitting and subpackaging technology of a standard coal sample, relating to the technical field of coal detection. The technology comprises the steps that a primary subpackaging fineness coal sample is stacked, doped, leveled and equally divided into N parts; coal samples with the equal mass are taken out from the N parts of coal samples, blended and split into N parts, and stored separately till all the coal samples are split into N parts; the N parts of coal samples are stacked, doped, leveled and equally divided separately; coal samples with the equal mass are taken out from the N parts of coal samples respectively, blended, split into N parts, and subpackaged till all the coal samples are split and subpackaged; the coal sample subjected to the primary splitting and subpackaging is broken into coal with the fineness for detection, then air-dried, divided into N parts, and spread in discs to form uniform rectangular blocks; each rectangular block is equally divided into small blocks with the mass greater than the minimum packaging unit mass of the coal samples; the coal samples with the minimum packaging unit mass are taken out from the identical small block coal samples in the N parts of coal sample discs respectively; and the N parts of coal samples are blended, split into N parts, and subpackaged into the minimum packaging units. The technology has the advantages that a great number of samples can be quantitatively split and packaged for one time, and the split and packaged samples have high uniformity.
Description
Technical field
The present invention relates to coal detection technique field, particularly a kind of coal standard model high-uniformity quantitative division layered water flood well, is applicable to coal preparation of standard sample.
Background technology
In coal inspection, usually repeatability and repeatability are only specified to measurement result, namely clear and definite regulation is proposed to precision.But in order to provide reliable coal property test result, not only precision examination to be carried out to it, also to carry out accuracy examination.Coal standard model is one of method checking accuracy the most frequently used.Especially at Under the market economy condition, coal standard substance more will play its special " measurer " effect, regular employing coal standard model calibration instrument and use coal standard model evaluation test data, can find whether the result of a certain characteristic index of experimental determination is in normal condition, promises to accurate-metering ature of coal.
The preparation technology of sample is the primary factor ensureing coal standard model quality.Because the coal extremely uneven and miscellaneous organic ore deposit rock that is a kind of quality, wherein be mixed with various organic principle and inorganic constituents, and the degree of various uneven components is also different, the key issue of therefore sample preparation how to improve the uneven characteristic of feed coal.Make the homogeneity of coal standard model both meet request for utilization, conveniently again to make, must coal standard model be disposable makes by each, but also the quantity that can maintain and use for many years will be stored.Because after a collection of coal standard substance is finished, be just difficult to again obtained composition and identical another batch of coal standard substance of character.Coal standard model is carried out the most critical program that division packing is sample preparation, and on the homogeneity of coal sample, there is important impact.Particularly when division coal amount is larger, for reducing personal error, mechanically division should be made as far as possible, but at present the division layered water flood well of coal standard model also not sought unity of standard.
Summary of the invention
The object of the present invention is to provide a kind of coal standard model high-uniformity quantitative division layered water flood well, make layered water flood well have unified standard; Described is quantitatively quality.
Technical scheme of the present invention is achieved in that
The preparation of inventive samples and be divided in the preparation method (GB 474-2008) meeting coal sample require and environment temperature be no more than 30 DEG C, relative humidity be no more than 75% sample preparation chamber in carry out.Comprise twice division packing.
A division packing:
By coal sample reduction selected by after ageing to a packing granularity < 13 mm coal sample, coal sample is carried out heap mix, shakeout, point operation (N equals the division mark of mechanical reduction device) such as N part, respectively to get from N part etc. the mixing of quality coal sample join mechanical reduction device division to N part and a point N part deposit, until by complete for whole coal sample division, carry out heap respectively to N part coal sample again to mix, shakeout, point operation such as N part, then respectively from 1 part N part coal sample, quality (first time division divides packing quality) the coal sample mixing such as to get join mechanical reduction device division to the packing of N part, Using such method operation is until by complete for whole for coal sample division packing.
Secondary division packing:
By time division packing coal sample reduction of after ageing to detection granularity < 0.2 mm coal sample, after air oxygen detrition, a point N part is shakeout and be paved into a uniform pane in dish, each pane is divided into the fritter of equal number, and guarantee that the quality of every fritter is greater than coal sample minimum package element quality, use flat sample spoon and the plate identical fritter coal sample position sample respectively in N part coal sample dish, sampling amount is minimum package element quality, the mixing of N part coal sample is joined mechanical reduction device division and is distributed into minimum package unit to N part.Amount is large as samples, then residue coal sample can be repeated aforesaid operations, until all division packing is complete.
Heap of the present invention is mixed, shakeout, point operation such as N part time, first coal sample is carried out heap cone, to little for coal sample one point, one little point spread from sample heap top, make it from the top to bottom, from center to outer rim, form regular size-grade distribution, and at least casting 3 times, then clap gradually from top to bottom or shakeout into the bluff body that thickness is 10-50cm, coal sample being divided into N number of equal segment.
Mechanical reduction device of the present invention is rotary container type machinery reduction device.
When the flat sample spoon of use of the present invention and plate sampling, first plate is vertically inserted sample layer to bottom, then insert bottom spoon to sample layer, spoon is moved horizontally to the two to plate direction and closes up, mention spoon and plate, take out coal sample.
Advantage of the present invention is: disposablely can determine a large amount of coal standard model of quality division packing, the coal standard model after division packing has comparatively high uniformity, and the coal standard model quality repeatability of division packing is in batches higher.
Embodiment
Embodiment:
The preparation of sample and be divided in the preparation method (GB 474-2008) meeting coal sample require and environment temperature be no more than 30 DEG C, relative humidity be no more than 75% sample preparation chamber in carry out.
A division packing:
Fragmentation is carried out to coal sample selected by after 600 kg ageings, prepares a suitable packing granularity < 13 mm coal sample.Coal sample is carried out heap cone, by little for sample one point, one little point spreading from sample heap top, making it from the top to bottom, from center to outer rim, forming regular size-grade distribution, and at least casting 3 times.Then clapping gradually from top to bottom or shakeouing into thickness is about 40cm bluff body, coal sample is divided into 8 equal segments.From 8 segments, the mixing of quality coal sample such as respectively to get join rotary container type machinery reduction device and carry out division to 8 part, after division, coal sample divides 8 parts to deposit, until whole coal sample division is become 8 parts complete.8 parts of coal samples are carried out respectively to above-mentioned heap is mixed, shakeout, decile operation, then each get from 1 segment 8 parts of coal samples 3 kg coal samples mixing join rotary container type machinery reduction device carry out division to 8 part packing, Using such method operation until by complete for whole for coal sample division packing.
Secondary division packing:
Fragmentation is carried out to time division packing coal sample of after ageing, prepares the suitable particle size < 0.2 mm coal sample detected.Fully mixing reaching the coal sample after air-dried state, dividing 8 parts to shakeout and being paved into a uniform pane in dish.Each pane is divided into the fritter of equal number, and guarantees that the quality of every fritter is greater than coal sample minimum package unit 0.05 kg.Use flat sample spoon and the plate identical fritter coal sample position sample respectively in 8 parts of coal sample dishes.During sampling, first plate is vertically inserted sample layer to bottom, then insert bottom spoon to sample layer.Spoon is moved horizontally to the two to close up to plate direction, mentions spoon and plate, take out sample, sampling amount is 0.05 kg.8 parts of coal samples are mixed and joins rotary container type machinery reduction device and carry out division to 8 part and be distributed into minimum package unit 0.05 kg.Coal sample will be remained and repeat aforesaid operations, until all division packing is complete.
Claims (1)
1. a coal standard model high-uniformity quantitative division method for filling, is characterized in that, comprises twice division packing:
A division packing:
By coal sample reduction selected by after ageing to a packing granularity <13mm coal sample, coal sample is carried out heap mix, shakeout, point operation such as N part, N equals the division mark of mechanical reduction device, respectively to get from N part etc. the mixing of quality coal sample join mechanical reduction device division to N part and a point N part deposit, until by complete for whole coal sample division, carry out heap respectively to N part coal sample again to mix, shakeout, point operation such as N part, then respectively from 1 part N part coal sample, the mixing of quality coal sample such as to get join mechanical reduction device division to the packing of N part, Using such method operation is until by complete for whole for coal sample division packing, secondary division packing:
By time division packing coal sample reduction of after ageing to detection granularity <0.2mm coal sample, after air oxygen detrition, a point N part is shakeout and be paved into a uniform pane in dish, each pane is divided into the fritter of equal number, and guarantee that the quality of every fritter is greater than coal sample minimum package element quality, use flat sample spoon and the plate identical fritter coal sample position sample respectively in N part coal sample dish, sampling amount is minimum package element quality, the mixing of N part coal sample is joined mechanical reduction device division and is distributed into minimum package unit to N part; When sample size is large, then will remain coal sample and repeat aforesaid operations, until all division packing is complete;
The preparation of sample and be divided in the preparation method GB 474-2008 meeting coal sample require and environment temperature be no more than 30 DEG C, relative humidity be no more than 75% sample preparation chamber in carry out;
Described heap is mixed, shakeout, point operation such as N part time, first coal sample is carried out heap cone, to little for coal sample one point, one little point spread from sample heap top, make it from the top to bottom, from center to outer rim, form regular size-grade distribution, and at least casting 3 times, then clap gradually from top to bottom or shakeout into the bluff body that thickness is 10-50cm, coal sample being divided into N number of equal segment;
Described mechanical reduction device is rotary container type machinery reduction device;
When the flat sample spoon of described use and plate sampling, first plate is vertically inserted sample layer to bottom, then insert bottom spoon to sample layer, spoon is moved horizontally to the two to plate direction and closes up, mention spoon and plate, take out coal sample.
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| CN103558052A (en) * | 2013-11-10 | 2014-02-05 | 镇江市科瑞制样设备有限公司 | Slide type sampling device |
| JP6291972B2 (en) * | 2014-03-31 | 2018-03-14 | 三菱マテリアル株式会社 | Sampling position display device and sampling method |
| CN104677768B (en) * | 2015-03-19 | 2017-11-14 | 重庆益新阳工贸有限公司 | The assay method of moisture in a kind of metallurgical cinder |
| CN106546443A (en) * | 2016-11-08 | 2017-03-29 | 攀钢集团攀枝花钢钒有限公司 | The assay method of calcium-magnesium content in Inactivate granular magnesium |
| CN112704260A (en) * | 2019-10-25 | 2021-04-27 | 湖南中烟工业有限责任公司 | Preparation method of detection sample for removing cut tobacco content in cut stem objects of cigarette making machine |
| CN111562238B (en) * | 2020-05-29 | 2023-06-20 | 鞍钢股份有限公司 | Coal-based carbon raw material mixing evaluation method |
| CN113820470A (en) * | 2021-09-29 | 2021-12-21 | 西安热工研究院有限公司 | Test method for rapidly judging slagging property of coal ash |
| CN114813435A (en) * | 2022-03-23 | 2022-07-29 | 浙江工业大学 | Method for determining Hardgrove grindability index of lignite |
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| KR20120061093A (en) * | 2010-10-22 | 2012-06-13 | 현대로템 주식회사 | Apparatus for measuring crushing rate of coal crusher |
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| JPH10253556A (en) * | 1997-03-14 | 1998-09-25 | Hitachi Ltd | Preparation of sample for analysis |
| CN101793643A (en) * | 2010-02-09 | 2010-08-04 | 武汉钢铁(集团)公司 | Method for refining coke used for measuring coke optical texture |
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