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Apparatus and method for manufacturing coal sample by hybrid hot-pressing

A technology of hot-press forming and coal samples, which is applied in the direction of measuring devices, sampling, and test sample preparation, etc. It can solve problems such as difficulty in meeting test requirements, damage to the adsorption and desorption gas properties of coal samples, and low strength of coal samples.

Pending Publication Date: 2017-01-25
NORTH CHINA INST OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Binderless molding to produce coal samples, when the coal sample size is large, the coal sample strength is low and easy to break when the pressure is low; when the particle size is small and the pressure is high, the coal sample strength increases, but the permeability decreases greatly
Binder molding coal, due to the influence of additives, destroys the properties of the adsorption and desorption gas of the coal sample, so it is difficult to meet the test requirements

Method used

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  • Apparatus and method for manufacturing coal sample by hybrid hot-pressing

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Embodiment Construction

[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0012] Such as figure 1 As shown, the device of the present invention proposes a device for making coal samples by hybrid hot press molding, which includes a casing 1 with two ends open, and a briquetting block 2 is slidably connected to the two ends of the casing 1 respectively, and the two briquetting blocks 2. Tightly connect a connecting column 3 protruding from the casing 1 respectively. A ventilation tube 4 is inserted in one of the connection columns 3 , one end of the ventilation tube 4 passes through one of the pressure blocks 2 and communicates with the casing 1 , and the other end extends out of the connection column 3 and is connected with a valve 8 . An exhaust pipe 5 is inserted in the other connecting column 3 , one end of the exhaust pipe 5 passes through the other pressing block 2 and communicates with the casing 1 , and the other en...

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Abstract

The invention provides an apparatus and method for manufacturing coal sample by hybrid hot-pressing, wherein the apparatus comprises a casing with two ends opened; two ends of the inside of the casing are each slidably connected with a presser, the two pressers are each fastened and connected to a connection post extending out the casing, a vent tube is inserted into one connection post, one end of the vent tube runs through one presser and then communicates with the inside of the casing, the other end of the vent tube is extended out of the connection post and connected with a first valve, an exhaust tube is inserted into the other connection post, one end of the exhaust tube runs through the other presser and communicates with the inside of the sleeve, and the other end of the exhaust tube is extended out of the connection post and connects with a second valve; the sleeve is covered with an electric heating sleeve.

Description

technical field [0001] The invention relates to a coal sample making device and method, in particular to a mixing hot pressing forming device and method for making coal samples. Background technique [0002] Due to the well-developed internal joints and extremely unstable structure of raw coal, it is difficult to process into ideal raw coal specimens. Therefore, it has become a common method to study various mechanical adsorption gas properties of coal by using formed coal samples. The properties of coal samples after molding are greatly affected by coal powder particle size, molding moisture, molding pressure, molding temperature and binder. At present, the methods of making shaped coal samples at home and abroad can be divided into three categories: the first type is no binder molding, that is, only water is added to the coal powder during pressing; the second type is binder molding, that is, when pressing Add high-temperature coal tar, asphalt, etc. as binders to coal po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/38G01N1/44
CPCG01N1/286G01N1/38G01N1/44
Inventor 陈学习周世宁
Owner NORTH CHINA INST OF SCI & TECH
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