CN113267388A - Rapid digestion device and rapid digestion method for lead concentrate - Google Patents
Rapid digestion device and rapid digestion method for lead concentrate Download PDFInfo
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- CN113267388A CN113267388A CN202011161884.0A CN202011161884A CN113267388A CN 113267388 A CN113267388 A CN 113267388A CN 202011161884 A CN202011161884 A CN 202011161884A CN 113267388 A CN113267388 A CN 113267388A
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- quantitative
- pipe
- lead concentrate
- tube
- ultrasonic
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- 230000029087 digestion Effects 0.000 title claims abstract description 51
- 239000012141 concentrate Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 27
- 239000002253 acid Substances 0.000 claims abstract description 25
- 239000003595 mist Substances 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000002745 absorbent Effects 0.000 claims abstract description 15
- 239000002250 absorbent Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000120 microwave digestion Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a rapid lead concentrate digestion device and a rapid lead concentrate digestion method, wherein the rapid lead concentrate digestion device comprises an ultrasonic pool, a bracket, a quantitative pipe and an absorption pipe; the ultrasonic pool comprises a pool body, and a heating module and an ultrasonic module which are arranged on the pool body; the support is arranged in the tank body, and the support is also provided with a mounting hole for placing the quantitative pipe; the absorption tube is fixed at the tube opening of the quantitative tube, and an acid mist absorbent is arranged in the absorption tube. The invention can simply and conveniently realize the rapid and environment-friendly digestion of lead concentrate.
Description
Technical Field
The invention belongs to the technical field of goods taking in commodity sales, and particularly relates to a rapid lead concentrate digestion device and a rapid lead concentrate digestion method.
Background
Lead concentrate is the main raw material of lead smelting industry, and with the continuous development of non-ferrous metal production technology, the impurity metal content of the raw material directly influences the transaction price, and the requirements on the detection of copper, arsenic, antimony, bismuth and cadmium elements in non-ferrous metals are higher and higher.
Lead concentrate digestion is a key link for detecting the content of impurity elements. The traditional digestion method comprises electric hot plate digestion, closed container digestion, microwave digestion and the like, and the digestion of lead concentrate is realized by laboratory equipment such as a high-power electric hot plate, a microwave digestion instrument, a fume hood and the like under the conditions of high temperature and high pressure, and potential safety hazards of different degrees such as explosion, acid liquid bumping, acid liquid dry burning and the like exist. In addition, the existing lead concentrate digestion method has complicated steps and long time consumption in the actual operation process, easily causes the loss or pollution of elements to be detected, and generates a large amount of acid mist to seriously pollute the environment.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a rapid lead concentrate digestion device and a rapid lead concentrate digestion method.
The technical scheme adopted by the invention is as follows: a device for rapidly digesting lead concentrate comprises an ultrasonic pool, a bracket, a quantitative pipe and an absorption pipe;
the ultrasonic pool comprises a pool body, and a heating module and an ultrasonic module which are arranged on the pool body;
the support is arranged in the tank body, and the support is also provided with a mounting hole for placing the quantitative pipe;
the absorption tube is fixed at the tube opening of the quantitative tube, and an acid mist absorbent is arranged in the absorption tube.
Preferably, the bracket includes a bottom plate, a side plate disposed on the bottom plate, and a face plate disposed on the side plate, and the mounting hole is disposed on the face plate.
Preferably, the absorption tube includes a receiving chamber, a connection tube disposed at one end of the receiving chamber, an opening disposed at the other end of the receiving chamber, and a mesh cover disposed at the opening.
Preferably, a plug body is arranged at a pipe orifice of the quantitative pipe, and the connecting pipe penetrates through the plug body and is communicated with the quantitative pipe.
Preferably, a barrier medium for blocking the acid mist absorbent is arranged at the joint of the accommodating cavity and the connecting pipe.
Preferably, the device for rapidly digesting lead concentrate further comprises a control module electrically connected with the heating module and the ultrasonic module.
The invention also provides a rapid lead concentrate digestion method, which comprises the following steps:
s1, weighing a quantitative lead concentrate sample and a quantitative digestion solution, adding the quantitative lead concentrate sample and the quantitative digestion solution into a quantitative pipe, installing an absorption pipe with an acid mist absorbent at the pipe orifice of the quantitative pipe, and placing the quantitative pipe into an installation hole of a bracket;
s2, placing the support and the quantifying pipe into an ultrasonic pool filled with clear water for water bath heating, wherein the water level in the ultrasonic pool is higher than the liquid level of the quantifying pipe;
and S3, after the water temperature reaches the set temperature, opening the ultrasonic module to accelerate the hydrolysis of the lead concentrate in the quantitative pipe.
The lead concentrate digestion device comprises an ultrasonic pool, a support, a quantitative pipe, an absorption pipe and a control module, wherein the absorption pipe is fixed at a pipe opening of the quantitative pipe, the quantitative pipe is placed in a mounting hole, the support is placed in the ultrasonic pool, and the control module is connected with the ultrasonic pool; the quantitative pipe is used for placing a lead concentrate sample and digestion liquid; the ultrasonic pool is used for heating and ultrasonically digesting the lead concentrate sample; the control module is used for controlling the ultrasonic module and the heating module to work, so that the rapid and environment-friendly digestion of the lead concentrate can be simply and conveniently realized.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a rapid lead concentrate digestion device;
FIG. 2 is a schematic structural view of the bracket in the embodiment of FIG. 1;
FIG. 3 is a schematic view of the structure of the absorber pipe in the embodiment of FIG. 1;
fig. 4 is a flow chart of an embodiment of the rapid lead concentrate digestion method.
Detailed Description
The invention will be further described with reference to the drawings, wherein examples of the embodiments are shown in the drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, some structures or devices are not specifically described, and it is understood that there are structures or devices that can be implemented in the prior art.
As shown in fig. 1-2, the rapid lead concentrate digestion device comprises an ultrasonic pool 1, a bracket 2, a quantitative pipe 3 and an absorption pipe 4; the ultrasonic pool 1 comprises a pool body, and a heating module and an ultrasonic module which are arranged on the pool body; the support 2 is arranged in the tank body, and the support 2 is also provided with a mounting hole for placing the quantitative pipe 3; the absorption tube 4 is fixed at the mouth of the quantitative tube 3, and an acid mist absorbent 43 is arranged in the absorption tube 4.
In this embodiment, the bracket 2 is a set of rigid polyethylene shelves capable of resisting a high temperature of 130 ℃, and includes a bottom plate 21, two side plates 22 and a face plate 23. A plurality of groups of brackets 2 are arranged in the ultrasonic pool 1 side by side and used for fixing the quantitative tubes 3; the bracket 2 comprises a bottom plate 21, a side plate 22 arranged on the bottom plate 21 and a panel 23 arranged on the side plate 22, and the mounting hole is arranged on the panel 23.
The quantitative tube 3 is a quantitative glass tube resistant to high temperature of 130 ℃, and comprises a tube body and a tube cover. And when the ultrasonic digestion is carried out, the pipe cover is taken down and the upper absorption pipe is connected. After digestion, the tube cap is covered after the water is used for constant volume, and the mixture is shaken up.
The absorption tube 4 is fat tripe absorption tube 4, including holding the chamber, setting up and being in hold the connecting pipe of chamber one end, set up and be in hold the trompil of the chamber other end and set up the net lid 44 of trompil department. The mouth of pipe of ration pipe 3 is provided with the cock body, the connecting pipe runs through the setting of cock body and with ration pipe 3 intercommunication. The joint of the receiving chamber and the connecting pipe is provided with a barrier medium 42 for isolating the acid mist absorbent 43, preferably cotton. The SDG-1 absorbent is prevented from falling into the quantitative tube 3 during ultrasonic digestion; the cavity is filled with an SDG-1 acid mist absorbent 43 which is used for absorbing acid mist escaping from the quantitative tube 3 during ultrasonic digestion and avoiding direct discharge into the air; and a plastic cover with grids is covered at the large aperture position of the upper end, so that the SDG-1 absorbent is prevented from accidentally spilling, and the consistency of the internal pressure and the external pressure of the absorption tube is ensured. The connecting tube of the absorption tube 4 is inserted into a rubber plug with a hole in the center, and the rubber plug is used for closing the quantitative tube 3.
The ultrasonic pool 1 is a cavity with an ultrasonic function and a heating function, is made of stainless steel and is used for accommodating the bracket 2, the quantitative tube 3 and the absorption tube 4; the device that lead concentrate was cleared up fast still include with the control module that heating module and ultrasonic module electricity are connected, heating module is including setting up ceramic heating tube and the temperature sensor at the cell body outer wall, and ultrasonic wave module is the ultrasonic generator who sets up on the cell body, and ultrasonic generator, ceramic heating tube and temperature sensor are connected with the control module electricity respectively. The control module comprises a control circuit board, a control chip and a control button which are arranged on the control circuit board, and a display screen. The display screen is used for displaying parameters such as water temperature and working power of ultrasonic waves, and the control panel is used for setting a preset value for the parameters. In order to further improve the control flexibility of the digestion device, the control module 5 is connected to the panel of the ultrasonic pool 1 and is used for setting the temperature and controlling the ultrasonic time.
According to the rapid lead concentrate digestion device, digestion, quantification and acid mist absorption are combined into a whole, the problems of repeated transfer of digestion liquid, constant volume and direct discharge of acid mist are solved, the digestion efficiency is improved, the pretreatment speed is increased, and the operation steps are reduced. The quantitative tubes correspond to the acid mist absorbers with the rubber plugs one by one, and the rubber plugs are cleaned by ultrapure water after digestion, so that the loss of elements to be detected is avoided. The acid mist absorber is a cavity transparent glass tube with a small aperture at the lower part and a large aperture at the upper part, and the acid mist absorbent 43 is easy to replace. The SDG-1 acid mist absorbent 43 is filled in the middle of the acid mist absorber to absorb and digest the acid mist generated during digestion, so that the direct discharge of the acid mist to pollute the environment is avoided, the acid mist is prevented from corroding the ultrasonic pool 1 body, and the device is particularly suitable for rapidly digesting on site without a ventilation system. 6 quantitative pipes can be placed to a set of support, and multiunit support can be placed side by side in ultrasonic wave pond 1, easily takes out and places to and wash ultrasonic wave pond 1.
The invention also provides a rapid lead concentrate digestion method, which comprises the following steps:
s1, weighing a quantitative lead concentrate sample and a quantitative digestion solution, adding the quantitative lead concentrate sample and the quantitative digestion solution into a quantitative pipe, installing an absorption pipe with an acid mist absorbent at the pipe orifice of the quantitative pipe, and placing the quantitative pipe into an installation hole of a bracket;
s2, placing the support and the quantifying pipe into an ultrasonic pool filled with clear water for water bath heating, wherein the water level in the ultrasonic pool is higher than the liquid level of the quantifying pipe;
and S3, after the water temperature reaches the set temperature, opening the ultrasonic module to accelerate the hydrolysis of the lead concentrate in the quantitative pipe.
In this embodiment, the absorption tube is fixed to a tube opening of the quantitative tube, the quantitative tube is placed in the mounting hole, the bracket is placed in the ultrasonic pool, and the control module is connected with the ultrasonic pool; the quantitative pipe is used for placing a lead concentrate sample and digestion liquid; the ultrasonic pool is used for heating and ultrasonically digesting the lead concentrate sample; the control module is used for controlling the ultrasonic module and the heating module to work, so that the rapid and environment-friendly digestion of the lead concentrate can be simply and conveniently realized.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (7)
1. A device for rapidly digesting lead concentrate is characterized by comprising an ultrasonic pool, a bracket, a quantitative pipe and an absorption pipe;
the ultrasonic pool comprises a pool body, and a heating module and an ultrasonic module which are arranged on the pool body;
the support is arranged in the tank body, and the support is also provided with a mounting hole for placing the quantitative pipe;
the absorption tube is fixed at the tube opening of the quantitative tube, and an acid mist absorbent is arranged in the absorption tube.
2. The lead concentrate rapid digestion device according to claim 1, characterized in that the bracket comprises a bottom plate, a side plate arranged on the bottom plate and a panel arranged on the side plate, and the mounting hole is arranged on the panel.
3. The rapid lead concentrate digestion device according to claim 1, wherein the absorption pipe includes a receiving chamber, a connection pipe disposed at one end of the receiving chamber, an opening disposed at the other end of the receiving chamber, and a mesh cover disposed at the opening.
4. The rapid lead concentrate digestion device according to claim 3, wherein the mouth of the quantitative tube is provided with a plug body, and the connecting tube is arranged through the plug body and communicated with the quantitative tube.
5. The lead concentrate rapid digestion device according to claim 3, characterized in that a barrier medium for blocking the acid mist absorbent is arranged at the joint of the containing cavity and the connecting pipe.
6. The lead concentrate rapid digestion device according to the claim 1, characterized in that the device further comprises a control module electrically connected with the heating module and the ultrasonic module.
7. A rapid lead concentrate digestion method is characterized by comprising the following steps:
s1, weighing a quantitative lead concentrate sample and a quantitative digestion solution, adding the quantitative lead concentrate sample and the quantitative digestion solution into a quantitative pipe, installing an absorption pipe with an acid mist absorbent at the pipe orifice of the quantitative pipe, and placing the quantitative pipe into an installation hole of a bracket;
s2, placing the support and the quantifying pipe into an ultrasonic pool filled with clear water for water bath heating, wherein the water level in the ultrasonic pool is higher than the liquid level of the quantifying pipe;
and S3, after the water temperature reaches the set temperature, opening the ultrasonic module to accelerate the hydrolysis of the lead concentrate in the quantitative pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161884.0A CN113267388A (en) | 2020-10-27 | 2020-10-27 | Rapid digestion device and rapid digestion method for lead concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161884.0A CN113267388A (en) | 2020-10-27 | 2020-10-27 | Rapid digestion device and rapid digestion method for lead concentrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113267388A true CN113267388A (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011161884.0A Pending CN113267388A (en) | 2020-10-27 | 2020-10-27 | Rapid digestion device and rapid digestion method for lead concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113267388A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203965221U (en) * | 2013-12-31 | 2014-11-26 | 广东省保化检测中心有限公司 | A kind of digestion furnace |
| CN204330469U (en) * | 2015-01-04 | 2015-05-13 | 陕西理工学院 | A kind of heavy metal pollution soil sample digestion instrument |
| CN205280470U (en) * | 2015-12-30 | 2016-06-01 | 海南鼎人科技有限公司 | Appearance is cleared up to intelligent high efficiency of supersound perspective |
| CN205301023U (en) * | 2015-11-20 | 2016-06-08 | 东北林业大学 | Ordinary pressure seals pollution -free digestion device |
| CN205665207U (en) * | 2016-06-07 | 2016-10-26 | 四川出入境检验检疫局检验检疫技术中心 | Carry out wet process before heavy metal survey and clear up device of handling sour gas |
| CN206818507U (en) * | 2017-06-27 | 2017-12-29 | 山西省农产品质量安全检验监测中心 | A kind of device of rapid-digestion soil |
| CN108279153A (en) * | 2018-01-05 | 2018-07-13 | 四川环科检测技术有限公司 | Metal elements in soil digestion procedure |
| CN109453638A (en) * | 2018-12-21 | 2019-03-12 | 江苏源远检测科技有限公司 | Automatically quickly catch up with sour instrument |
| CN210057846U (en) * | 2019-05-07 | 2020-02-14 | 江阴秋毫检测有限公司 | Acid mist absorption and neutralization device |
| CN111238914A (en) * | 2018-11-28 | 2020-06-05 | 中国石油天然气集团有限公司 | Solid sample digestion device and method |
| CN111272532A (en) * | 2020-02-18 | 2020-06-12 | 张振江 | Full-automatic digestion acid dispelling instrument |
-
2020
- 2020-10-27 CN CN202011161884.0A patent/CN113267388A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203965221U (en) * | 2013-12-31 | 2014-11-26 | 广东省保化检测中心有限公司 | A kind of digestion furnace |
| CN204330469U (en) * | 2015-01-04 | 2015-05-13 | 陕西理工学院 | A kind of heavy metal pollution soil sample digestion instrument |
| CN205301023U (en) * | 2015-11-20 | 2016-06-08 | 东北林业大学 | Ordinary pressure seals pollution -free digestion device |
| CN205280470U (en) * | 2015-12-30 | 2016-06-01 | 海南鼎人科技有限公司 | Appearance is cleared up to intelligent high efficiency of supersound perspective |
| CN205665207U (en) * | 2016-06-07 | 2016-10-26 | 四川出入境检验检疫局检验检疫技术中心 | Carry out wet process before heavy metal survey and clear up device of handling sour gas |
| CN206818507U (en) * | 2017-06-27 | 2017-12-29 | 山西省农产品质量安全检验监测中心 | A kind of device of rapid-digestion soil |
| CN108279153A (en) * | 2018-01-05 | 2018-07-13 | 四川环科检测技术有限公司 | Metal elements in soil digestion procedure |
| CN111238914A (en) * | 2018-11-28 | 2020-06-05 | 中国石油天然气集团有限公司 | Solid sample digestion device and method |
| CN109453638A (en) * | 2018-12-21 | 2019-03-12 | 江苏源远检测科技有限公司 | Automatically quickly catch up with sour instrument |
| CN210057846U (en) * | 2019-05-07 | 2020-02-14 | 江阴秋毫检测有限公司 | Acid mist absorption and neutralization device |
| CN111272532A (en) * | 2020-02-18 | 2020-06-12 | 张振江 | Full-automatic digestion acid dispelling instrument |
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