A device and method for determining the geometric scale of flying high-temperature particles
A particle and scale technology, applied in the field of metallurgical blast furnace slag waste heat utilization, can solve the problems of discontinuous blast furnace slag discharge and difficult recovery of slag waste heat, etc., and achieve good accuracy
Active Publication Date: 2019-10-25
TSINGHUA UNIV
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Problems solved by technology
Due to the physical properties of blast furnace liquid slag and the discontinuity of blast furnace slag discharge and the requirement that the slag after waste heat recovery treatment should have excellent comprehensive utilization value and performance, it is difficult to recover slag waste heat
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[0026] The specific embodiment of the present invention and working process will be further described below in conjunction with accompanying drawing.
[0027] The orientation terms such as up, down, left, right, front and rear in this application document are established based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationship may also change accordingly, so this should not be understood as limiting the scope of protection.
[0028] Such as figure 1 As shown, a device for determining the geometric dimensions of flying high-temperature particles, the device includes a casing 1 and a high-temperature furnace 6 arranged above the casing 1; a crucible 7 is arranged inside the high-temperature furnace 6, and a crucible nozzle 9 is arranged below the crucible 7, and the crucible 7 There is a communication hole 4 in the center of the bottom, which communicates with the crucible nozzle; the crucible nozzle 9 ...
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Abstract
An apparatus for determining geometric dimension of flying high-temperature particles includes a cover casing and a high-temperature furnace. The high-temperature furnace is internally provided with a crucible, and a crucible jet pipe is arranged under the crucible, wherein the center of the bottom of the crucible is provided with a communicating hole which communicates with the crucible jet pipe. The crucible jet pipe passes through the bottom of the high-temperature furnace and is led into the upper part of the cover casing. The cover casing is internally equipped with a centrifugation rotary disc, which is located below the crucible jet pipe. The cover casing is internally equipped with a grading partition plate, which divides the cover casing into a granulation chamber and a particle observation chamber. The centrifugation rotary disc is arranged in the granulation chamber, and the grading partition plate is provided with trapezoidal screening conical holes. The communicating hole formed in the bottom of the crucible is provided with a conical valve, which can be vertically pulled and moved. High-temperature particles fall on the centrifugation rotary disc from the crucible, and are thrown away to form a particle flow, wherein particles with the size smaller than the screening conical holes enter the particle observation chamber. The flight track is recorded with a high-speed camera, and the time-average area and the time-average perimeter are calculated to obtain qualitative particle sizes and sphericility. The apparatus is non-contact and allows continuous measurement.
Description
technical field [0001] The present invention relates to a device and method for determining the geometric scale of flying high-temperature particles, in particular to a device and method for determining the geometric scale and changes of high-temperature liquid and solid particles such as metallurgical blast furnace slag during flight, and belongs to the field of visual measurement. It is especially suitable for determining the qualitative scale of waste heat boiler heat transfer calculation in the field of waste heat utilization of metallurgical blast furnace slag. Background technique [0002] The liquid slag produced in the blast furnace smelting process in my country has a lot of sensible heat. The average output of 1 ton of pig iron is 300-600kg of slag. At present, water quenching is generally used to granulate and cool high-temperature liquid blast furnace slag, which not only cannot recycle the sensible heat of blast furnace slag, but also causes a lot of waste of wa...
Claims
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IPC IPC(8): G01N15/02C21B3/08C21B3/06
CPCC21B3/06C21B3/08G01N15/0227Y02W30/50
Inventor 张衍国李清海
Owner TSINGHUA UNIV