Vacuum ball-milling degassing tank for rare gas analysis, and analysis method
A rare gas, degassing tank technology, applied in the preparation of test samples, grain processing and other directions, can solve the problems of inability to carry out the next analysis, poor sealing performance, inability to vacuumize, etc., to achieve simple structure, good airtightness, Easy-to-use effects
Active Publication Date: 2013-04-17
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
Therefore, the device of this structure has the following disadvantages: the device is simple in structure, poor in sealing performance, cannot be vacuumed, and lacks an interface connected with peripheral equipment to perform next-step analysis
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[0036] Such as figure 2 As shown, a vacuum ball milling degassing tank for rare gas analysis, the upper cover 5 is provided with a welded pipe 7, one end of the welded pipe 7 is inserted into the tank body 3, and sealed and welded with the upper cover 5; the other end is provided with The vacuum valve 9 is airtightly connected by valve fasteners; the vacuum valve 9 is set in the pressure sleeve 10, the pressure sleeve 10 is a barrel-shaped structure, placed on the upper cover 5, the side of the pressure sleeve 10 is provided with an opening, the vacuum valve 9 It can communicate with the outside world through the opening; steel balls 1 are arranged inside the tank body 3 , and the number of steel balls 1 is three; the tank body 3 and the upper cover 5 are connected by fastening bolts 6 .
[0037] The inner bottom of the tank body 3 is provided with arc chamfering; the tank body 3 is made of impact-resistant stainless steel material;
[0038] A sealing ring 4 is arranged betw...
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The invention discloses a vacuum ball-milling degassing tank for rare gas analysis, and an analysis method. The degassing tank comprises a tank body and an upper cover, wherein a pipe is arranged on the upper cover, one end of the pipe is inserted into the tank body, the pipe is in tight coupling with the upper cover, and the other end of the pipe is provided with a vacuum valve which is in tight coupling with the pipe and is sheathed inside a pressing sleeve with a bucket-shaped structure; the pressing sleeve is arranged on the upper cover; an opening is formed in the side surface of the pressing sleeve, and the vacuum valve penetrates through the opening to be communicated with the outside; a steel ball is arranged inside the tank body; and the tank body is connected with the upper cover in a fastening manner and is provided with a seal. The analysis method comprises the following steps of: sealing a sample in the tank body, crushing the sample by the degassing tank in a ball-milling instrument, collecting rare gas, and then connecting the vacuum ball-milling degassing tank into a gas analysis device for analysis. The degassing tank provided by the invention is simple in structure and convenient to operate, is provided with an interface shared with the analysis device, simultaneously can meet the requirements on high vacuum tightness and of analysis of the rare gas, and has low air background.
Description
technical field [0001] The invention relates to the field of geology, in particular to a vacuum ball milling degassing tank and an analysis method for rare gas analysis. Background technique [0002] In the field of geological research, due to the large difference in the partition coefficients of rare gases in the solid phase and gas-liquid phase, the rare gas isotopes in the gas-liquid inclusions in rocks can be well preserved, which is an important means of tracing mantle fluids. It is very difficult to separate the rare gas from the sample, the solid sample must be crushed first. At present, there are many crushing and grinding instruments. The most representative and advanced abroad is the PM200 planetary ball mill manufactured by German Retsch Company. This equipment can finely grind solid substances to a very high grinding fineness, down to submicron level, but the configured milling tank (see figure 1 ), consisting of 101 grinding cylinder; 102 O-ring; 103 grinding ...
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IPC IPC(8): B02C17/10G01N1/28
Inventor 陶成杨华敏王萍王杰李广友
Owner CHINA PETROLEUM & CHEM CORP