Method for monitoring oxygenized self-heating sulfide ore stack temperature

A technology of sulfide ore and ore heap, which is applied in the field of spontaneous combustion prediction of sulfide ore, can solve the problems of different surrounding environments, uneven block size, large ore heap volume, etc., and achieve high measurement accuracy, low cost, and small volume Effect

Inactive Publication Date: 2008-11-19
CENT SOUTH UNIV
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Problems solved by technology

[0005] The advantages of the present invention are: (1) solve the problem of mining conditions (especially in the ore heap due to large volume, changeable shape, uneven block size, different surrounding environments, and large temperature changes at each point) due to the large size of the on-site ore heap In the case of spontaneous combustion) the shortcomings of the application of contact temperature measurement technology are limited; (2) the temperature measurement accuracy of the ore pile is high; (3) the temperature ...

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  • Method for monitoring oxygenized self-heating sulfide ore stack temperature
  • Method for monitoring oxygenized self-heating sulfide ore stack temperature
  • Method for monitoring oxygenized self-heating sulfide ore stack temperature

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Embodiment Construction

[0009] The specific experimental conditions and methods are as follows:

[0010] The main thermometers used are: 1) CENTER multi-point contact thermometer, which is used to measure the actual temperature on the surface of the ore pile. It is characterized by high measurement accuracy, fast speed, and continuous measurement. With the help of relevant software, the measurement results Make a graph on the computer. 2) Raytek Portable Infrared Thermometer, which is small and sturdy enough to fit in your pocket, just aim at the target, no contact required, pull the trigger, and read the heat on the display in less than a second , the surface temperature of dangerous or difficult-to-reach objects. The infrared thermometer is composed of optical system, photodetector, signal amplifier, signal processing, display output and other parts; the optical system gathers the target infrared radiation energy in its field of view, and the infrared energy is focused on the photodetector and con...

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Abstract

The invention discloses a method for monitoring temperature of an oxidation spontaneous heating sulfide ore heap, which is characterized in that the method includes the following steps that: a non-contact temperature sensing device is applied to determine temperature of the ore heap; different temperature sensing distances and angles, different environment conditions, and fitting functions between different sulfide ore heap parameters and errors of the non-contact temperature sensing device can be obtained by a simulation test; the fitting functions are used to modify the reading errors of the temperature sensing device, thereby surface temperature of the sulfide ore heap on the spot is monitored to further predict spontaneous combustion risks of the sulfide ore heap. The method used to monitor the ore heap temperature has the advantages of high monitoring precision, rapid operation, convenience, safety and low cost.

Description

technical field [0001] The invention relates to the field of prediction and prediction of spontaneous combustion of sulfide ores, in particular to the monitoring of the temperature of sulfide ores. Background technique [0002] When the crushed sulfide ore heap is in contact with the air, it will oxidize and release heat. If the heat generated by oxidation is greater than the heat it radiates to the surroundings, the ore heap can increase its temperature by itself, and the temperature rise will accelerate its oxidation speed. Under certain external conditions, local heat can accumulate, and the ore pile will continue to heat up to its ignition temperature, thus triggering a spontaneous fire. It can be seen that monitoring the temperature of the ore heap is an important way to predict its spontaneous combustion. However, the monitoring of ore heap temperature depends on convenient and reliable temperature monitoring technology. Owing to the large size of the on-site ore pil...

Claims

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Application Information

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IPC IPC(8): G01K13/10
Inventor 吴超阳富强高歌李珞铭李明
Owner CENT SOUTH UNIV
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