Method for determining quantity of fed specimens in breathable cylinder of brinell breathable specific surface area instrument

A technology of specific surface area and cylinder, which is applied in the field of determination of the amount of test material contained, can solve problems such as pollution, and achieve the effect of avoiding serious pollution

Inactive Publication Date: 2014-04-30
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing method for determining the amount of sample in the venting cylinder of the Blaine specific surface area meter needs to use heavy m

Method used

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  • Method for determining quantity of fed specimens in breathable cylinder of brinell breathable specific surface area instrument
  • Method for determining quantity of fed specimens in breathable cylinder of brinell breathable specific surface area instrument
  • Method for determining quantity of fed specimens in breathable cylinder of brinell breathable specific surface area instrument

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for determining the amount of sample loaded in the venting cylinder of a Blaine air-permeable specific surface area meter, the specific steps of which are as follows:

[0029] Step 1. Measure the relevant parameters of the venting cylinder and the tamper of the Blaine air permeable specific surface area meter: measure the distance a from the lower edge of the perforated plate of the perforated cylinder to the lower edge of the perforated cylinder, the thickness b of the perforated plate 1, and the thickness c of the two filter papers , the height of the tamper f, the height g of the tamper plus the air-permeable cylinder when the support ring of the tamper tightly contacts the top edge of the cylinder when no material is loaded; Edge distance a=4.10 mm; perforated plate 1 thickness b=1.00 mm; two filter paper 2 thickness c=0.30 mm; tamper height f=50.20 mm; the support ring of the tamper tightly contacts the top edge of the cylinder when no material is loaded T...

Embodiment 2

[0036] A method for determining the amount of sample in a ventilating cylinder of a Blaine air-permeable specific surface area meter, the specific operating steps of which are: a method for determining the amount of sample in the air-permeable cylinder of a Blaine air-permeable specific surface area meter, the specific operating steps of which are as follows:

[0037] Step 1. Measure the relevant parameters of the venting cylinder and the tamper of the Blaine air permeable specific surface area meter: measure the distance a from the lower edge of the perforated plate 1 of the perforated cylinder to the lower edge of the perforated cylinder a, the thickness b of the perforated plate 1, and the thickness of the two filter papers 2 c. The height of the tamper f, the height g of the tamper plus the air-permeable cylinder when the support ring of the tamper tightly contacts the top edge of the cylinder when no material is loaded; The distance from the lower edge a=4.10 mm; the thick...

Embodiment 3

[0044] A method for determining the amount of sample in a ventilating cylinder of a Blaine air-permeable specific surface area meter, the specific operating steps of which are: a method for determining the amount of sample in the air-permeable cylinder of a Blaine air-permeable specific surface area meter, the specific operating steps of which are as follows:

[0045] Step 1. Measure the relevant parameters of the venting cylinder and the tamper of the Blaine air permeable specific surface area meter: measure the distance a from the lower edge of the perforated plate 1 of the perforated cylinder to the lower edge of the perforated cylinder a, the thickness b of the perforated plate 1, and the thickness c of the two filter papers , the height of the tamper f, the height g of the tamper plus the air-permeable cylinder when the support ring of the tamper tightly contacts the top edge of the cylinder when no material is loaded; Edge distance a=4.10 mm; perforated plate 1 thickness ...

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Abstract

The invention discloses a method for determining the quantity of fed specimens in a breathable cylinder of a brinell breathable specific surface area instrument. The method comprises the following steps: adding specimens which ensure that after a weight is placed on a bruiser, a support ring of the bruiser is higher than the top edge of the breathable cylinder, into the brinell breathable specific surface area instrument, and compacting the specimens; measuring a height h1 from the bottom edge of the breathable cylinder to the top end of the bruiser, and according to a formula h2=h1-a-b-c-f, calculating a height h2 of the specimens, wherein a refers to the distance between the lower edge of a perforated plate in the breathable cylinder to the lower edge of the breathable cylinder, b refers to the thickness of the perforated plate, c refers to the sum of thickness of filter paper placed between the upper and lower ends of the specimens, and f refers to the height of the bruiser; calculating a ratio constant A of the height h2 of the specimens to a mass m1 of the specimens; and according to a formula m=(g-a-b-c-f)/A, calculating a mass m of the specimens required to be added, wherein g refers to the height between the bottom edge of the breathable cylinder and the top end of the bruiser when no specimen is added and the support ring of the bruiser is pressed against the top edge of the breathable cylinder. The method disclosed by the invention is simple, convenient, accurate, environmentally friendly and safe.

Description

technical field [0001] The invention relates to a method for determining the quantity of a sample contained, in particular to a method for determining the quantity of a sample contained in a ventilating cylinder of a Blaine air-permeable specific surface area meter. Background technique [0002] At present, the determination of cement specific surface area in the cement industry is based on GB / T 8074-2008 "Method for Determination of Cement Specific Surface Area - Blaine Method". 2 / g of other powdery materials, the measurement principle is to measure the specific surface area of ​​cement based on the change of flow velocity caused by different resistance when a certain amount of air passes through the cement layer with a certain porosity and fixed thickness. In a cement layer with a certain porosity, the size and number of pores are a function of the particle size, and also determine the air velocity through the layer. [0003] During the measurement, the cement sample is...

Claims

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Application Information

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IPC IPC(8): G01N15/00
Inventor 张新爱刘辉敏茹晓红徐丽英刘龙
Owner LUOYANG INST OF SCI & TECH
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