Method for rapidly determining ash content of filled paper by adopting portable gas stove

A rapid measurement, cassette furnace technology, applied in the direction of removing a certain component and weighing, etc., can solve the problems of inability to completely burn the organic matter in the paper, the need, and the large temperature shock, so as to shorten the ash content measurement time and ensure the accuracy. , the effect of long heating time

Active Publication Date: 2015-06-24
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the standard method for measuring the ash content of paper is to measure the ash content by burning the paper sample through a muffle furnace at 525°C or 900°C and then weighing the residue. However, the traditional muffle furnace uses resistance wire heating. The heating process is slow, the ashing time and energy cost are high, and the gas will be emitted during the working process to pollute the working environment. At the same time, the muffle furnace has uneven temperature distribution in the furnace, low temperature near the furnace mouth, large temperature fluctuations, and large temperature deviations. Problem: X-ray diffraction analysis can be used to accurately analyze paper elements, but this instrument is expensive, requires temperature control, and humidity control, and is not suitable for laboratory environments; paper is cut into strips of a certain size and then burned in the air It is a fast and fast method for the rapid determination of paper ash, but it cannot completely burn the organic matter in the paper by this method, and the stability of the measured data is poor, and the environmental factors are greatly affected

Method used

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  • Method for rapidly determining ash content of filled paper by adopting portable gas stove
  • Method for rapidly determining ash content of filled paper by adopting portable gas stove
  • Method for rapidly determining ash content of filled paper by adopting portable gas stove

Examples

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Effect test

Embodiment 1

[0046] Coated paper (quantitative 125g / m 2 ), take 0.5g of coated paper and cut it into several paper strips with a length of 50mm and a width of 40mm, place the paper strips completely overlapping and fold them in half along the length direction to form 70-145 degrees, and use an analytical balance (0.0001g) to weigh the paper sample and After the weight of the burning device used to place the paper pattern, put the paper pattern into the support frame 2 in the burning device, and then place the whole burning device on the butane card-type furnace for burning. The vertical distance between the burning device and the card-type furnace head The control is 15mm, and the card-type furnace is used to burn the paper sample at high temperature for 3 minutes, then the combustion device is cooled in the air for 20 seconds, and then placed in a desiccator to cool for 3 minutes, and then weighed on an analytical balance, and finally the ash value is obtained by calculation, repeat Calcu...

Embodiment 2

[0050] Coated white cardboard (quantitative 230g / m 2 ), cut 0.5g of coated white cardboard into several paper strips with a length of 40mm and a width of 10mm, place the paper strips completely overlapping and fold them in half along the length direction to form 70-145 degrees, and use an analytical balance (0.0001g) to weigh After measuring the weight of the paper sample and the burning device used to place the paper sample, put the paper sample into the support frame 2 in the burning device, and then place the whole burning device on the butane card-type furnace for burning, the burning device and the card-type furnace The vertical distance of the head is controlled at 10mm, and the paper sample is burned at a high temperature in a cassette furnace for 2 minutes, then the combustion device is cooled in the air for 10 seconds, and then placed in a desiccator for 2 minutes, then weighed on an analytical balance, and finally the ash content is obtained by calculation Values ​​w...

Embodiment 3

[0055] Sketch paper (quantitative 150g / m 2), take 0.5g of sketch paper and cut it into several paper strips with a length of 90mm and a width of 50mm, place the paper strips completely overlapping and fold them in half along the length direction to form 70-145 degrees, and use an analytical balance (0.0001g) to weigh the paper sample and After the weight of the burning device used to place the paper pattern, put the paper pattern into the support frame 2 in the burning device, and then place the whole burning device on the butane card-type furnace for burning. The vertical distance between the burning device and the card-type furnace head The control is 30mm, use a cassette furnace to burn the paper sample at a high temperature for 10 minutes, then cool the combustion device in the air for 30 seconds, then place it in a dryer for 6 minutes, then weigh it on an analytical balance, and finally obtain its ash value by calculation, repeat Calculate the average value after several ...

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Abstract

The invention discloses a method for rapidly determining the ash content of filled paper by adopting a portable gas stove. The method comprises the following steps: firstly cutting the filled paper into a plurality of paper slips in the same size and then putting the paper slips in a completely overlapping manner and then folding the paper slips along the length direction to obtain folded paper patterns and controlling the folding angles at 70-145 degrees; then weighing the folded paper patterns and a combustion apparatus used for placing the folded paper patterns; then putting the folded paper patterns in the combustion apparatus, then putting the whole combustion apparatus on the portable gas stove to be combusted for a certain time, then taking down the combustion apparatus and putting the combustion apparatus in a dryer to be cooled after cooling the combustion apparatus in the air for a certain time and weighing the combustion apparatus after cooling; finally computing the ash content of the filled paper via a formula. The method is high in ash content determination speed and accurate in data and can absolutely meet the requirement of rapid determination of the ash content of the paper in production and scientific research.

Description

technical field [0001] The invention relates to a technique for measuring the ash content of paper, in particular to a method for quickly measuring the ash content of filled paper by using a cassette furnace. Background technique [0002] At present, the standard method for measuring the ash content of paper is to measure the ash content by burning the paper sample through a muffle furnace at 525°C or 900°C and then weighing the residue. However, the traditional muffle furnace uses resistance wire heating. The heating process is slow, the ashing time and energy cost are high, and the gas will be emitted during the working process to pollute the working environment. At the same time, the muffle furnace has uneven temperature distribution in the furnace, low temperature near the furnace mouth, large temperature fluctuations, and large temperature deviations. Problem: X-ray diffraction analysis can be used to accurately analyze paper elements, but this instrument is expensive, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
Inventor 张美云李钦宇宋顺喜李琳
Owner SHAANXI UNIV OF SCI & TECH
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