A kind of detection method of liquid phase fluidity of iron ore powder
A liquid phase fluidity and detection method technology is applied in the detection of the basic characteristics of iron ore powder and the field of detection of the liquid phase fluidity of iron ore powder. Simple, highly instructive, and guaranteed representative results
Active Publication Date: 2021-04-06
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology
[0008] The purpose of the present invention is to provide a method for detecting the liquid phase fluidity of iron ore powder, which mainly solves the technical problem of low detection accuracy of the liquid phase fluidity of iron ore powder in the prior art
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] Embodiment 1, a kind of detection method of liquid phase fluidity of iron ore powder, this method comprises the following steps:
[0038] 1) Dry the iron ore powder, the drying temperature is 105°C, and the drying time is 4 hours; detect SiO in the iron ore powder 2 The mass percentage content ε;
[0039] Take M 1 The iron ore powder of g is classified into particle size, and the standard sieve is used to screen the iron ore powder into particle size classes less than 0.5mm, 0.5-1.0mm, 1.0-3.0mm and 3.0-5.0mm and greater than 5.0mm, and measure the iron ore of each particle size class Powder mass percentage W i , i=1, 2,..., 5, according to the granularity of iron ore powder from small to large: W 1 , W 2 , W 3 , W 4 , W 5 ; And detect that the median particle size of the iron ore powder with particle size less than 0.5mm is d 1 , the median particle size of iron ore powder with a particle size of 0.5-1.0mm is d 2 , the median particle size of iron ore powder ...
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The invention discloses a method for detecting the liquid-phase fluidity of iron ore powder, which mainly solves the technical problem of low detection accuracy of the liquid-phase fluidity of iron ore powder in the prior art. A method for detecting liquid-phase fluidity of iron ore powder in the present invention comprises: 1) drying iron ore powder, the drying temperature is not lower than 105 DEG C, and the drying time is not less than 4 hours; SiO 2 ε; 2) Weigh the CaO fine powder and dry it; 3) Add CaO fine powder to the iron ore powder in different particle size grades; 4) Mix the ore powder cylindrical samples with different particle size grades Place them in a heating furnace for heating, heat up to 1250-1300°C and keep warm for 10-15min; 5) measure the vertical projected area of the sample, and calculate the liquid phase fluidity index of the iron ore powder sample at each particle size level; 6) calculate the iron ore Liquid phase fluidity of mineral powder samples. The liquid phase fluidity of the iron ore powder detected by the invention has high precision.
Description
technical field [0001] The invention relates to a method for detecting the basic characteristics of iron ore powder, in particular to a method for detecting the liquid phase fluidity of iron ore powder, and belongs to the technical field of iron ore sintering. Background technique [0002] In the iron and steel production process, iron ore sintering is an important process to provide ironmaking raw materials with excellent metallurgical properties for blast furnaces. With the pursuit of blast furnace product quality and corporate economic benefits, iron and steel enterprises need to expand the source of raw materials to reduce production costs. However, the performance of iron ore powder from different sources is very different, and it needs to be used in a reasonable combination to meet the impact of blast furnace production on sintering. mine requirements. If a sintering cup is used to simulate the sintering process, the workload will be large and the experiment period wi...
Claims
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IPC IPC(8): G01N25/02
CPCG01N25/02
Inventor 韩凤光龙红明韩宏松余正伟谢朝晖春铁军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD