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Briquette coal sample making tool and method

A technology for making tools and methods, applied in the preparation of test samples, etc., can solve the problems of different densities, changes in the physical and mechanical properties of coal samples, and reduce the overall homogeneity of coal samples, so as to achieve low cost and save sample preparation. time, ensuring the effect of homogeneity

Inactive Publication Date: 2013-02-13
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past, the method of making briquette coal samples mainly has the following shortcomings: (1) In the process of making briquette coal, in order to facilitate molding, it is often necessary to mix a certain amount of additives into the coal powder. If the additive is similar to oil or resin These substances cannot be removed after the briquette coal sample is made, which will lead to changes in the physical and mechanical properties of the coal sample; (2) In the past, in the process of making briquette coal samples, a bottom-sealed coal pipe was used , put the coal powder mixed with chemical additives into the coal pipe, and use an upper pressure head to press down from the top of the coal pipe under the action of an external load, and generate a displacement downward to press the coal powder in the coal pipe into a coal sample. This method will cause the density of the upper and lower ends of the coal sample to be different, reducing the overall homogeneity of the coal sample

Method used

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  • Briquette coal sample making tool and method
  • Briquette coal sample making tool and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Depend on figure 1 with figure 2 The coal sample preparation tool shown includes upper and lower transparent coal pressing pipes 2 and an upper pressure for inserting into the top opening of the coal pressing pipe 2 and compacting the wet coal powder 3 in the coal pressing pipe 2 downwards. Head 1 and a "convex"-shaped pressing head 5.

[0018] The coal pressing pipe 2 is a steel pipe, and the upper pressing head 1 is composed of a pressing block at the top and a vertical plunger fixed on the lower side of the pressing block. Insert from the top port of the coal pressing pipe 2, the diameter of the plunger matches the inner diameter of the coal pressing pipe 2, the outer wall of the plunger fits the inner wall of the coal pressing pipe 2, and the upper pressure head 1 passes through the plunger and presses the coal The inner wall of the tube 2 is a sliding fit.

[0019] The protrusion of the lower pressing head 5 is inserted into the bottom opening of the coal press...

Embodiment 2

[0022] Such as figure 1 with figure 2 Shown briquette coal sample preparation method, comprises the steps:

[0023] (1) Take a certain quality of wet coal powder, weigh an appropriate amount of distilled water according to a certain ratio with an electronic balance and a measuring cup, mix the coal powder 3 and the distilled water evenly to become wet coal powder, and prepare for making briquette coal sample 6, Wet pulverized coal is the mixture of pulverized coal 3 and distilled water; Prepare the briquette coal sample making tool as described in embodiment 1 and install, and the installation process is as follows: spring 4 is enclosed within the raised outer ring of lower pressure head 5, and then The coal pressing pipe 2 is placed on the spring 4 and the lower pressure head 5, and an appropriate amount of wet coal powder is weighed with an electronic balance and placed in the coal pressing pipe 2 for making the coal sample 6, and is compacted with an iron bar; The outer ...

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Abstract

The invention discloses a briquette coal sample making tool and method. The method comprises the following steps of: putting a wet coal powder between an upper pressing head and a lower pressing head in a coal pressing tube by using the briquette coal sample making tool which comprises the upper pressing head, the lower pressing head, a coal pressing tube spring and a sampling device; applying a load to the upper pressing head downwards by using a press machine; compacting the wet coal powder so as to form a coal sample and then stopping the applying of the load; and then unloading the spring and the lower pressing head; and pressing the upper pressing head downwards, so as to press the coal sample out of the coal pressing tube. According to the invention, technical defects in the traditional briquette coal sample making are solved; and the effective coal sample making tool and method are provided, so that the uniformity and making success rate of the briquette sample are increased.

Description

technical field [0001] The invention relates to a tool and method for making coal briquettes, which are mainly suitable for making coal briquettes used in indoor laboratories. Background technique [0002] In the past, the method of making briquette coal samples mainly has the following shortcomings: (1) In the process of making briquette coal, in order to facilitate molding, it is often necessary to mix a certain amount of additives into the coal powder. If the additive is similar to oil or resin These substances cannot be removed after the briquette coal sample is made, which will lead to changes in the physical and mechanical properties of the coal sample; (2) In the past, in the process of making briquette coal samples, a bottom-sealed coal pipe was used , put the coal powder mixed with chemical additives into the coal pipe, and use an upper pressure head to press down from the top of the coal pipe under the action of an external load, and generate a displacement downwar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 王登科魏建平姚邦华温志辉夏玉玲秦恒洁张宏图
Owner HENAN POLYTECHNIC UNIV
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