A rapid method for determining the ash content of porous calcium silicate filled paper

Abstract

The invention discloses a method for rapidly determining the ash content of paper filled with porous calcium silicate. The method comprises the following steps: firstly cutting the paper filled with porous calcium silicate into a plurality of paper slips in the same size and then enabling the paper slips to overlap each other and then rolling the paper slips into a cylindrical paper pattern along the length direction; then weighing the cylindrical paper pattern and a combustion apparatus used for placing the cylindrical paper pattern; then putting the cylindrical paper pattern in the combustion apparatus, igniting the cylindrical paper pattern by adopting a butane spray gun and combusting the cylindrical paper pattern, then 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 paper filled with porous calcium silicate 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 porous calcium silicate filled paper. Background technique [0002] Porous calcium silicate is a by-product produced in the process of extracting alumina from solid waste fly ash in thermal power plants. Adding porous calcium silicate filler in paper making can significantly improve the air permeability and bulk of paper. However, excessive addition of calcium silicate will sacrifice the strength of paper, so rapid detection of calcium silicate content in paper during papermaking is of great significance for improving paper performance. [0003] 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 heatin...

AI Technical Summary

Problems solved by technology

[0003] 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

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