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Heat preservation cover and method of using same to shorten filter paper ashing time in gravimetric analysis method

A technology of thermal insulation cover and filter paper, applied in the field of chemical analysis, can solve the problems of low ashing efficiency, inconvenient observation of ashing conditions, long time required for ashing of filter paper, etc., so as to improve heating efficiency, shorten ashing time, and avoid filter paper burning effect

Inactive Publication Date: 2019-01-25
CHENGDE JIANLONG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, in the process of using gravimetric analysis to determine the content of components, there are problems such as the time required for filter paper ashing is too long, the ashing efficiency is low, and the ashing situation is inconvenient to observe. Researchers propose effective solution

Method used

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  • Heat preservation cover and method of using same to shorten filter paper ashing time in gravimetric analysis method
  • Heat preservation cover and method of using same to shorten filter paper ashing time in gravimetric analysis method
  • Heat preservation cover and method of using same to shorten filter paper ashing time in gravimetric analysis method

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Embodiment 1

[0052] This embodiment provides a heat preservation cover, its front view and top view are as follows figure 1 and figure 2 As shown, the heat preservation cover includes a cover body 1, the upper and lower ends of the cover body are set as hollow, one end is provided with a first hole 3, and the other end is provided with a second hole 4, and the area of ​​the first hole 3 is smaller than that of the second hole 4, the cover body is also provided with a handle 2.

[0053] The cover 1 is in the shape of a truncated cone, with a height of 120 mm and a wall thickness of 6 mm; two handles 2 are symmetrically distributed on the cover, and the thickness of the handle is 10 mm; the inner diameter of the first hole 3 is 188 mm, the second The outer diameter of the first hole 3 is 200mm, the inner diameter of the second hole 4 is 248mm, and the outer diameter of the second hole 4 is 260mm.

[0054] The cover body 1 is made of quartz and feldspar mixed and then fired.

[0055] A me...

Embodiment 2

[0059] This embodiment provides a heat preservation cover, including a cover body 1, the upper and lower ends of the cover body are set as hollow, one end is provided with a first hole 3, and the other end is provided with a second hole 4, the area of ​​the first hole 3 is Smaller than the area of ​​the second hole 4, a handle 2 is also provided on the cover.

[0060] The cover 1 is in the shape of a truncated cone, with a height of 100 mm and a wall thickness of 5 mm; two handles 2 are symmetrically distributed on the cover, and the thickness of the handle is 5 mm; the inner diameter of the first hole 3 is 150 mm, and the second The outer diameter of the first hole 3 is 160 mm, the inner diameter of the second hole 4 is 200 mm, and the outer diameter of the second hole 4 is 210 mm.

[0061] The cover body 1 is made by mixing quartz and clay and then firing.

[0062] The method for shortening the filter paper ashing time in the gravimetric method using the above-mentioned hea...

Embodiment 3

[0066] This embodiment provides a heat preservation cover, including a cover body 1, the upper and lower ends of the cover body are set as hollow, one end is provided with a first hole 3, and the other end is provided with a second hole 4, the area of ​​the first hole 3 is Smaller than the area of ​​the second hole 4, a handle 2 is also provided on the cover.

[0067] The cover 1 is in the shape of a truncated cone, with a height of 200 mm and a wall thickness of 10 mm; two handles 2 are symmetrically distributed on the cover, and the thickness of the handle is 15 mm; the inner diameter of the first hole 3 is 250 mm, the second The outer diameter of the first hole 3 is 270mm, the inner diameter of the second hole 4 is 300mm, and the outer diameter of the second hole 4 is 320mm.

[0068] The cover body 1 is made by mixing feldspar and clay and then firing.

[0069] The method for shortening the filter paper ashing time in the gravimetric method using the above-mentioned heat p...

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Abstract

The invention provides a heat preservation cover and a method of using the same to shorten filter paper ashing time in a gravimetric analysis method. The heat preservation cover includes a cover body.The cover body is a hollow structure, one end thereof is provided with a first hole, and the other end is provided with a second hole. An area of the first hole is smaller than an area of the secondhole. Handles are also arranged on the cover body. By using the heat preservation cover, which is provided by the invention, in conjunction with a heating device, heating efficiency of a filter paperashing process in the gravimetric analysis method can be greatly improved, the ashing time of filter paper can be shortened, a case where the filter paper burns, effective element loss is caused, andaccuracy of a measurement result is impacted is effectively avoided, and at the same time, a case where gas generated by a heating process quickly overflows and causes a blast and sample splashing isalso prevented.

Description

technical field [0001] The invention belongs to the field of chemical analysis, and relates to a heat preservation cover and a using method thereof, in particular to a heat preservation cover and a method for shortening the ashing time of filter paper in gravimetric analysis. Background technique [0002] Gravimetric analysis is an analysis method often used in chemical analysis. This method includes the following steps: first, accurately weigh a certain amount of sample; then, use appropriate chemical reactions to convert the components to be measured into pure compounds or The monomer is precipitated and separated from other components by filtration or other methods; finally, it is weighed after drying or burning until the constant weight is obtained to obtain the proportion of the component to be measured in the sample. Gravimetric analysis is often used to measure silicon, barium and other elements in substances, such as the determination of silicon by perchloric acid de...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 胡佐宇胡宗耀张淑艳程少鹏赵丽娜张海民许雅丽林荣华杨晓光姜彩艳朱丽萍杨艳秋
Owner CHENGDE JIANLONG SPECIAL STEEL
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