High-uniformity quantitative splitting and subpackaging technology of standard coal sample

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 [0001] The invention relates to the technical field of coal detection, in particular to a high-uniformity quantitative shrinkage and packing process for coal standard samples, which is suitable for the preparation of coal standard samples. Background technique [0002] In coal inspection, usually only the repeatability and reproducibility are specified for the measurement results, that is, the precision is clearly specified. However, in order to provide reliable coal quality testing results, not only the precision but also the accuracy must be tested. Coal standard samples are one of the most commonly used methods for checking accuracy. Especially under the conditions of market economy, coal reference materials will play their special "measuring tool" role. Regular use of coal standard samples to calibrate instruments and use of coal standard samples to evaluate inspection data can find out whether the results of a certain characteristic index measured by the lab...

AI Technical Summary

Problems solved by technology

Especially when the amount of divided coal is large, in order to reduce human error, mechanical methods should be used as much as possible. However, there is no unified standard for the shrinkage and packaging process of coal standard samples.