New method and device for measuring calcium carbonate content in paper sheet based on optical sensor
An optical sensor, calcium carbonate technology, applied in the direction of color/spectral characteristic measurement, etc., can solve problems such as complex measurement steps, large errors, and inability to reflect all product characteristics, so as to improve work intensity, increase efficiency, and reduce hardware investment costs Effect
Active Publication Date: 2017-03-22
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology
Although it is faster than the traditional method, there are also flaws, mainly because the measurement steps are complicated, the measured samples cannot reflect the characteristics of all products, and there are large errors
Method used
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Embodiment 1
[0045] A device for measuring calcium carbonate content in paper based on an optical sensor, comprising an acidification reaction tank 4 for dispersing paper and adding acid for acidification, a precipitant storage tank 8, a solution mixer, an optical detection system provided with a cuvette 13 and The computer 17, the acidification reaction tank 4 and the precipitant storage tank 8 are respectively connected to the solution mixer through a pipeline provided with a valve and a metering pump, and the solution mixer is connected to the cuvette 13, and the cuvette 13 is provided with a liquid outlet, and the liquid outlet The waste liquid tank 14 is connected by a pipeline.
[0046] The solution mixer includes a three-way valve 11 and a mixing pipeline 12 connected with the three-way valve 11 . The mixing pipeline 12 is a helical pipeline for steady flow mixing.
[0047] The optical detection system includes light source 15, optical fiber 16, CCD and so on.
[0048]The acidific...
Embodiment 2～5
[0064] The following examples are basically consistent with Example 1, except that:
[0065]
[0066]
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Abstract
The invention relates to the technical field of calcium carbonate content measurement and discloses a new method and device for measuring calcium carbonate content in a paper sheet based on an optical sensor. The device comprises an acidizing reaction tank, a precipitator storage tank, metering pumps, a solution mixer, an optical detection system and a computer, wherein the acidizing reaction tank is used for dispersing the paper sheet and adding acid for acidizing; the optical detection system is equipped with a colorimetric dish; the acidizing reaction tank and the precipitator storage tank are respectively communicated with the solution mixer through pipelines with valves and metering pumps; the solution mixer is communicated with the colorimetric dish; and a liquid outlet is formed in the colorimetric dish. According to the method, the paper sheet is acidized, and then the acidized solution is subjected to spectrum detection, so that the calcium carbonate content in the paper sheet can be acquired. The device disclosed by the invention has a simple structure, the operation is simple and convenient, the detection working strength is greatly improved, and the error of manual operation is reduced; the accurate measurement for the calcium carbonate content in the paper sheet can be quickly realized; and the detection result is high in accuracy and precision.
Description
technical field [0001] The invention relates to the technical field of calcium carbonate content determination, and more specifically, relates to a new method and device for determining the calcium carbonate content of paper based on an optical sensor. Background technique [0002] Regarding the determination of calcium carbonate content in paper, the traditional method is to measure the ash content in pulp after burning. This method is the national standard method for the determination of calcium carbonate retention rate in paper. This method requires high temperature calcination. , if the operation is continuous, there is a risk of scalding, and the time requirement is also relatively high. Since the filler is calcined, it may not be possible to accurately grasp the burning time and burning temperature, which will lead to problems such as uneven calcination. And the operation is complicated, and the measurement takes a long time. And now also have the measuring method tha...
Claims
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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor胡会超张瑜陈礼辉黄六莲
OwnerFUJIAN AGRI & FORESTRY UNIV