Device and method for measuring dynamic self-heating rate of vulcanizing ore
A self-heating rate and dynamic technology, which is applied in the field of non-coal mine mining safety, can solve the problems of large ore sample volume, large heating range, and insufficient stability of oxygen supply by compressor, so as to achieve less ore sample volume, short time, and oxygen supply stable effect
Inactive Publication Date: 2010-12-22
CENT SOUTH UNIV
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Problems solved by technology
Using this device to measure the self-heating tendency of sulfide ore on ore samples can only understand the self-heating rate of sulfide ore samples, but cannot calculate the self-heating rate (heat flux) of dynamic oxidation of ore samples, and the required test time is as long as Tens of days; each measurement requires a large amount of ore samples, and the heating range is too large, and the oxygen supply by the compressor is not stable enough, which does not meet the actual needs
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[0032] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0033] A high-temperature-resistant quartz glass reactor body (1) is installed in the thermostat, and the height of the reactor is much larger than its diameter, such as the height of the reactor is 5-10 times the diameter; the upper part of the reactor is covered with an insulating layer (6), and the upper part of the reactor is opened An exhaust pipe (18) is arranged at the bottom of the reactor; a backing plate (2) and an insulating layer (3) are arranged at the bottom of the reactor, an oxygen supply inlet (4) is arranged between the backing plate and the insulating layer, and an insulating layer (8) is arranged on the central axis of the reactor The thermocouple (7), another thermocouple (10) is set at the corresponding position outside the reactor, and the two thermocouples are connected with the temperature automatic recorder (12) outsid...
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The invention discloses a sulfide ore dynamic nature ratio testing device and the testing method. Wherein, the height of a reactor is much more than the diameter, and the upper part and the bottom part of the reactor are both provided with a heat insulation layer; the bottom of the reactor is for the pre-heated oxygen entering in, and the opening of the upper part of the reactor is provided with an air exhausting pipe. The method of using the device to test the sulfide ore dynamic nature ratio is that: firstly, doing blank test, and then inletting the pre-heated microflow oxygen in the reactor; increasing the constant temperature box for many times, and after the temperature of theore sample is balanced with the environment temperature, keeping the constant temperature for one hour; recording the internal and external temperature of the reactor respectively, according to the temperature tested for many times, and counting the dynamic nature ratio of the ore sampling. Comparing with prior art, the invention complies with the dynamic oxidizing nature course of the sulfide ore, which can apply the tested data to count the dynamic nature ratio of the ore; the testing need short time, the using ore sample is less and the oxygen is supplied stably.
Description
technical field [0001] The invention relates to the field of mining safety in non-coal mines, in particular to a measuring device and a measuring method for self-heating tendency of sulfide ore. Background technique [0002] Accurate determination of the spontaneous combustion tendency of sulfide ores can provide a basis for mining design of ore deposits, so as to correctly select mining methods, ventilation systems, mining sequences and take fire prevention measures, so as to avoid blind design, save investment and ensure safety. [0003] The spontaneous combustion tendency of ore refers to the comprehensive spontaneous combustion tendency of all minerals in the ore, rather than the spontaneous combustion tendency of a single mineral. The main characteristics related to spontaneous combustion tendency in ore are material composition of ore, structural characteristics of each component, oxidation rate, self-heating characteristics, ignition temperature, etc. Among them, the ...
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IPC IPC(8): G01N25/20
Inventor 吴超李孜军
Owner CENT SOUTH UNIV