Method for monitoring oxygenized self-heating sulfide ore stack temperature

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...

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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 monitoring operation of the ore pile is fast, convenient, safe and low in cost; (4) Raytek portable infrared measurement The thermometer is cheap, its volume is small, sturdy, and can be carried in a pocket. When using it, it only needs to be aimed at the ore pile without contact, and the trigger is pulled, and the reading is indicated on the display screen in less than a second. The digital-to-analog conversion established by the present invention can quickly obtain the temperature of the on-site ore heap by means of a computer

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