Test method for iron ore powder sintering assimilation flux amount and speed

A test method and technology of iron ore powder, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as needing improvement in accuracy, complex measurement methods, and single reference data, so as to achieve true and reliable data, low experimental cost, and easy operation Effects with ease of control

Active Publication Date: 2017-05-03
武汉钢铁有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Although the above method discloses the measurement of the assimilation of different iron ore powders, the measurement method is complicated, the accuracy needs to be improved, or there are problems such as inconvenient operation and high experimental cost, or there is a problem of single reference data

Method used

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  • Test method for iron ore powder sintering assimilation flux amount and speed
  • Test method for iron ore powder sintering assimilation flux amount and speed
  • Test method for iron ore powder sintering assimilation flux amount and speed

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Embodiment Construction

[0032] The present invention takes iron ore powder A and iron ore powder B contained in a certain iron ore powder for production as an example, and tests the assimilation amount of each particle size and the CaO consumption speed of assimilation. Step (1) and (2) of the two test methods are the same:

[0033] (1) First test the alkalinity R, coal mixing ratio and water content of the 4 particle sizes of 0-2mm, 2mm-3.15mm, 3.15mm-5mm and 5mm-6.3mm iron ore powder for production, see the table 1.

[0034] Table 1 produces the flux, fuel and moisture of each particle size of the mixed mineral powder

[0035]

[0036](2) According to the alkalinity R and coal ratio of the above test particle size, prepare four kinds of iron ore powder A and iron ore powder B respectively 0-2mm, 2mm-3.15mm, 3.15mm-5mm and 5mm-6.3mm. Alkalinity R, Coal Ratio and Moisture of Grade Size.

[0037] (1) Test of the assimilation amount of iron ore powder in each particle size:

[0038] (3) Weigh 50...

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Abstract

The invention relates to a testing method of an iron mine powder sintering and assimilating flux amount and speed, and solves the problems that the existing testing method of the iron mine powder sintering and assimilating flux amount and speed is limited, complicated in operation and lower in reliability. In the testing method, testing of the iron mine powder assimilation is based on basicity and coal ratio of each size fraction of the screened ore blender to be matched with the basicity and coal ratio of each size fraction of the iron mine powder for testing and sintering, and measuring the unscreened ratio of each size fraction after sintering to evaluate the assimilation of each size fraction. Testing of iron mine powder CaO assimilating and consuming speed is to calculate the CaO assimilating speed of each size fraction of the ore powder at some temperature, so as to evaluate the influence of the powder granularity and the sintering time of the iron mine at the experimental temperature on the CaO assimilating speed. The testing method disclosed by the invention is simple, high in reliability, convenient to operate and control, low in experiment cost, and high in accuracy.

Description

technical field [0001] The invention relates to a test method for sintering assimilation of iron ore powder. Specifically, it is a test method for the amount and speed of iron ore powder sintering assimilation flux. Background technique [0002] Iron ore powder will produce a liquid phase during sintering, and an appropriate amount of assimilated liquid phase in the sintering process can not only ensure that sintering produces enough assimilated bonding liquid phase to make the sintered ore have good strength, but also make the sintered material layer have a reasonable Ventilation can ensure better indicators, higher output and lower fuel consumption. [0003] Iron ore powder for production is made by grading a variety of ore powders. Since different ore powders and different particle sizes of the same kind of ore powder are assimilated to form different liquid phases during sintering, therefore, for different types and different For iron ore powders of particle size, it i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/02G01N5/00
Inventor 肖志新刘洪华贾斌文志军余珊珊
Owner 武汉钢铁有限公司
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