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Method for quantitatively evaluating breakage resistance and wear resistance of iron alloy for steelmaking by using drum

A quantitative evaluation, ferroalloy technology, used in testing wear resistance, testing metals, measuring devices, etc., can solve problems such as shatter resistance, wear resistance evaluation methods, and it is difficult to judge the influence of alloy yield.

Active Publication Date: 2020-09-01
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the detection and evaluation methods for the main element content and residual element content of ferroalloys for steelmaking are relatively complete, but there is a lack of evaluation methods for alloy properties, such as alloy shatter resistance and wear resistance, and it is difficult to judge the properties of alloys for steelmaking Influence of alloy yield during its use

Method used

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  • Method for quantitatively evaluating breakage resistance and wear resistance of iron alloy for steelmaking by using drum
  • Method for quantitatively evaluating breakage resistance and wear resistance of iron alloy for steelmaking by using drum
  • Method for quantitatively evaluating breakage resistance and wear resistance of iron alloy for steelmaking by using drum

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Evaluation of crush resistance and wear resistance of micro-carbon ferromanganese used in a steel mill:

[0058] Step 1: Slowly put 1508.65g of micro-carbon ferromanganese into a 1L large beaker filled with water, use a balance to measure the quality of overflowing water as 217.23g, and use ρ=m / v to calculate the density of the micro-carbon ferromanganese as 6.94g / cm 3 ;

[0059] Step 2: Using the formula for the volume of a sphere, calculate m=4 / 3πr 3 ρ d , Substituting the equivalent particle size into the formula, weighing 121.87g of monolithic micro-carbon ferromanganese with a mass range of 0.45-12.26g, accounting for 11.32% of the total mass; weighing a monolithic micro-carbon ferromanganese with a mass range of 12.26-98.11g 350.22g of iron, accounting for 32.53% of the total mass; weighing 604.52g of monolithic micro-carbon ferromanganese with a mass range of 98.11-454.22g, accounting for 56.15% of the total mass;

[0060] Step 3: Put the above total mass m ...

Embodiment 2

[0075] Evaluation of crush resistance and wear resistance of ferrosilicon (45%) used in a steel mill:

[0076] Step 1: Slowly put 1392.72g of ferrosilicon into a 1L large beaker filled with water, use a balance to measure the mass of overflowing water as 270.43g, and use ρ=m / v to calculate the density of the ferrosilicon to be 5.15g / cm 3 ;

[0077] Step 2: Using the formula for the volume of a sphere, calculate m=4 / 3πr 3 ρ d , Substituting the equivalent particle size into the formula, weighing 91.22g of a monolithic ferrosilicon with a mass range of 0.34-9.10g, accounting for 9.13% of the total mass; weighing 311.84g of a monolithic ferrosilicon with a mass range of 9.10-72.80g, Accounting for 31.21% of the total mass; weighing 596.10g of monolithic ferrosilicon with a mass range of 72.80-337.03g, accounting for 59.66% of the total mass;

[0078] Step 3: Put the above total mass m into the drum 0 999.17g of ferrosilicon is placed in a type I drum with a drum height of 700...

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Abstract

The invention relates to the field of efficient utilization of iron alloys, and provides a method for quantitatively evaluating the crush resistance and wear resistance of an iron alloy for steelmaking by using a drum. The method sequentially comprises the following steps: preparing an iron alloy sample, carrying out drum test on the iron alloy sample, screening the iron alloy sample, carrying outparticle size grading, and evaluating the crush resistance and wear resistance of the iron alloy after screening, wherein the ratio of the total amount of the screened small-aperture particles to thetotal amount of the iron alloy before entering the drum is used as a breakage resistance index, and the ratio of the total amount of the screened large-aperture particles to the total amount of the iron alloy before entering the drum is used as a wear resistance index; preferably, after the drum test, the particle size is less than 1mm, and the particle size of the alloy particles is greater than10mm, according to the ratio of alloy particles to the total amount of the alloy entering the drum, the evaluation indexes of the breakage resistance and the wear resistance of the alloy are obtained. The method provided by the invention can conveniently, accurately and quantitatively evaluate the breakage resistance and wear resistance of the alloy for steelmaking, and plays an important guidingrole in improving the alloy yield in the steelmaking process and reducing the alloy consumption in the steelmaking process.

Description

technical field [0001] The invention relates to the field of high-efficiency utilization of ferroalloys, in particular to a method for quantitatively evaluating the crush resistance and wear resistance of ferroalloys for steelmaking by using a drum. Background technique [0002] The yield of alloys used in steelmaking is not only related to the content of alloying elements, but also directly related to their particle size, state, addition method and use conditions. [0003] In the alloying control process of steelmaking, in order to improve the stability of the alloy yield and reduce the influence of harmful elements in the alloy on the properties of the steel, enterprises pay more attention to the content of the main components of the alloy and the content of residual elements in the alloy, such as : When high-quality steel is smelted, the alloy used for steelmaking needs to meet the requirements of high purity of alloy elements and low content of residual elements (S, P, A...

Claims

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Application Information

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IPC IPC(8): G01N33/20G01N3/56G01N15/02G01N9/02
CPCG01N3/56G01N9/02G01N15/0272G01N33/20G01N2009/026
Inventor 包燕平王仲亮王敏
Owner UNIV OF SCI & TECH BEIJING