Pretreatment dehydration device for measuring moisture in metal ore

Abstract

The utility model discloses a pretreatment dehydration device for measuring moisture in metal ore, and relates to a moisture pretreatment dehydration device which utilizes nitrogen as carrier gas to carry steam for sample introduction and is sleeved with a cracking tube and a tube furnace. The cracking tube is sleeved with the tubular furnace, a high-temperature dehydration environment of 500 DEG C is provided for large-particle samples, the samples can be added into the quartz boat through the sample inlet of the cracking tube, and the quartz boat is moved into the tubular furnace through the sliding table to be heated, so that moisture in the samples is evaporated out; meanwhile, dry nitrogen is continuously introduced into the cracking tube through the nitrogen introduction port to serve as carrier gas, and water vapor in the sample is carried to a moisture meter connected with the water vapor transfer port to be detected. The problems that an existing moisture measuring device is poor in treatment effect on samples with large particles, and the heating temperature cannot reach the dehydration temperature needed by samples such as metal minerals are solved.

Description

Technical Field

[0001] This utility model relates to a pretreatment dehydration device for determining the moisture content in metal ores. It is a pretreatment dehydration device for determining the moisture content in metal ores that uses nitrogen as a carrier gas to carry water vapor for sample injection and combines a pyrolysis tube with a tubular furnace. Background Technology

[0002] Currently, in the determination of moisture content in large-particle samples such as metal ores and minerals, high-temperature dehydration is often required to measure the moisture content. However, existing moisture measurement equipment is not only ineffective for processing large-particle samples such as metal ores, but its maximum heating temperature is generally only 300 degrees Celsius, far below the dehydration temperature required for samples such as metal minerals. Therefore, developing a simple, efficient, and suitable pretreatment dehydration device for moisture determination in metal ores is of great significance. Summary of the Invention

[0003] This invention provides a pretreatment dehydration device for determining the moisture content of metal ores. This device can not only provide a high-temperature dehydration environment of up to 500 degrees Celsius for samples such as metal ores and minerals with large particles and high dehydration temperatures, ensuring that the moisture in the sample is completely evaporated, but also uses nitrogen as a carrier gas to carry the water vapor evaporated from the sample to the moisture meter, thereby enabling the determination of the moisture content in metal ores that are difficult to dehydrate.

[0004] A pretreatment dehydration device for determining moisture content in metal ores includes: a sample introduction device, a tube furnace, a control system, and a housing. The sample introduction device includes a quartz boat, a pyrolysis tube, a magnetic drag hook, and a magnetic stage.

[0005] The quartz boat can be inserted into the pyrolysis tube through the tail end of the pyrolysis tube. The quartz boat can move linearly back and forth inside the pyrolysis tube via a sliding table. The sample can be added into the quartz boat through the sample inlet of the pyrolysis tube. The quartz boat moves to the tube furnace fitted with the front section of the pyrolysis tube via the sliding table for heating, causing the water in the sample to evaporate. At the same time, dry nitrogen gas is introduced into the pyrolysis tube through the nitrogen inlet at the side end of the pyrolysis tube. The role of the nitrogen gas is to prevent the sample from reacting with the air and to form a nitrogen gas flow that pushes the water vapor evaporated from the sample through the water vapor transfer port at the head end of the pyrolysis tube. Finally, the water vapor enters the moisture measuring device through the water vapor transfer port to complete the measurement and calculation of the moisture content. Attached Figure Description

[0006] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0007] Appendix Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0008] Appendix Figure 2This is a schematic diagram of the principle structure of this utility model.

[0009] Appendix Figure 3 This is a schematic diagram of the internal pyrolysis tube structure of this utility model.

[0010] Appendix Figure 4 This is a schematic diagram of the internal quartz boat motion structure of this utility model.

[0011] Among them: 01. Sample introduction device, 02. Control system, 03. Housing, 1. Quartz boat, 2. Slide stage, 3. Pyrolysis tube, 4. Tube furnace, 5. Nitrogen inlet, 6. Thermocouple loading port, 7. Water vapor transfer port, 8. Magnetic drag hook, 9. Magnet stage, 10. Sample introduction port. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to specific embodiments.

[0013] Please see Figure 1 This invention provides a pretreatment dehydration device for determining the moisture content of metal ores. The control system 02 controls the slide table 2 to advance a specified distance along the slide rail. Because the tail of the quartz boat 1 inside the pyrolysis tube 3 is hooked to the magnetic hook 8, and the magnetic hook 8 contains an embedded magnet, it can magnetically couple with the magnet in the magnet stand 9 installed on the slide table 2. Thus, the slide table 2 can move the quartz boat 1 together to directly below the sample inlet 10 at the upper end of the pyrolysis tube 3. The sample is then added to the quartz boat 1 through the sample inlet 10. After the sample is added, the control system 02 controls the slide table 2 to continue advancing along the slide rail, transporting the quartz boat 1 carrying the sample... The sample is fed into a tubular furnace 4, which is fitted with the front end of the pyrolysis tube 3. The tubular furnace 4 is controlled to heat the sample in the quartz boat 1, causing the water to evaporate. Thermocouple loading port 6, located at the upper end of the pyrolysis tube 3, can be used to load thermocouples and measure the air temperature inside the tubular furnace 4 in real time to ensure stable heating. While the tubular furnace 4 is heating, the control system continuously introduces dry nitrogen gas into the pyrolysis tube 3 through nitrogen inlet 5 located at the side end of the pyrolysis tube 3. This pushes the water vapor evaporated from the sample through water vapor transfer port 7 at the front end of the pyrolysis tube 3. Finally, the water vapor enters the moisture measuring device through water vapor transfer port 7, thus completing the measurement and calculation of the moisture content.

[0014] like Figure 3 As shown, the pyrolysis tube of this utility model includes the following parts: nitrogen inlet 5: located at the side end of the pyrolysis tube 3, used to introduce dry nitrogen into the pyrolysis tube 3; thermocouple loading port 6: located at the upper end of the pyrolysis tube 3, used to load thermocouples to measure the air temperature inside the tubular furnace 4 in real time, ensuring the stable operation of the heating process; and water vapor transfer port 7: located at the lower end of the pyrolysis tube 3, connected to the moisture measuring device, whose function is to transfer the nitrogen and water vapor mixture to the moisture measuring device, and finally complete the measurement and calculation of the moisture content.

[0015] Advantages of this utility model:

[0016] The combined structure of the pyrolysis tube and tubular furnace provides a high-temperature dehydration environment of up to 500 degrees Celsius for samples with larger particles, such as metal ores and minerals, while also meeting the measurement requirements for other common solid samples. This expands the measurement range for samples of different sizes and types, improving product applicability. Utilizing nitrogen as a carrier gas enables efficient moisture transfer from the sample, preventing condensation in the tube, improving transfer efficiency, ensuring a dry internal environment, and avoiding the influence of external humidity on measurements, thus enhancing measurement accuracy. The automatic sample introduction design reduces manual operation, lowers operational errors, and improves measurement efficiency and safety. A thermocouple installed inside the pyrolysis tube allows for real-time monitoring of the air temperature inside the tubular furnace, ensuring smooth heating. The system has a simple structure, is easy to maintain and operate, and reduces operating costs. In summary, this invention has significant technical advantages and application value, making it suitable for widespread use in the chemical, food, and pharmaceutical industries.

Claims

1. A pretreatment dehydration device for determining the moisture content of metal ores, characterized in that, The device comprises a cracking tube, a tube furnace, a quartz boat, a sliding table, a nitrogen inlet, a thermocouple loading port and a water vapor transfer port; the cracking tube is sleeved with the tube furnace, the quartz boat is arranged in the cracking tube and realizes linear reciprocating motion through the sliding table, the nitrogen inlet is arranged at the side end of the cracking tube, and the thermocouple loading port and the water vapor transfer port are arranged at the head end of the cracking tube.

2. The apparatus of claim 1, wherein, The quartz boat realizes linear reciprocating motion in the cracking tube through magnetic coupling with the sliding table.

3. The apparatus of claim 1, wherein, The cracking tube is sleeved with the tube furnace, and can provide a high-temperature dehydration environment of up to 500 DEG C for the sample.

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