Method for determining high-temperature interaction reactivity between iron-containing furnace materials of blast furnace

An iron furnace and high temperature technology, which is applied in the field of measuring the high temperature reactivity between iron-containing charges in a blast furnace, can solve the problems of the determination method and evaluation index of the non-high temperature interactive reactivity, and affect the metallurgical properties of the comprehensive charge, so as to reduce energy consumption and reduce The effect of pollutant emissions

Active Publication Date: 2020-06-02
UNIV OF SCI & TECH BEIJING +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, in the blast furnace charge structure, various types of iron ore are not smelted individually into the blast furnace, but mixed according to a certain ratio and then enter the blast furnace. There will be interaction and affect the metallurgical properties of the comprehensive cha

Method used

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  • Method for determining high-temperature interaction reactivity between iron-containing furnace materials of blast furnace
  • Method for determining high-temperature interaction reactivity between iron-containing furnace materials of blast furnace
  • Method for determining high-temperature interaction reactivity between iron-containing furnace materials of blast furnace

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Embodiment 1

[0052] The method of the present invention can measure the droplet performance of iron-containing charge (sintered ore, pellet ore), according to the droplet curve (such as image 3 shown), the temperature interval T of the melting droplet temperature of a single iron-containing charge is obtained 1 (Sinter droplet temperature range), T 2 (Pellet / lump droplet temperature range).

[0053] After mixing sinter and pellets (or lump ore) according to the ratio of 75%:25%, the same experimental method is used to measure the melting temperature range T of the mixed charge. 0 .

[0054] (1) Sample composition

[0055]

[0056] (2) Experimental procedure: Take 200g each of sinter, pellets and lump ore with a particle size of 10-12.5mm after drying, and conduct a single iron-containing charge droplet experiment; take 150g of sinter and 50g of pellet / lump , to form a mixed charge, and carry out the droplet experiment of the mixed charge; according to the temperature-pressure diffe...

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Abstract

The invention provides a method for determining the high-temperature interaction reactivity between the iron-containing furnace materials of a blast furnace. The method is used for determining and evaluating the interaction reactivity of the iron-containing furnace materials. Traditionally, the behavior for comprehensively deducing the furnace charge in a high-temperature zone of the blast furnaceaccording to the molten drop performance of the single furnace material is not comprehensive and accurate, the sintered ore and the lump ore/pellet ore react interactively in a high-temperature state, and the high-temperature interaction reaction characteristic has influence on the burden softening and dripping performance of the comprehensive furnace materials. The theoretical support can be provided for the optimized ore blending of the blast furnace by proposing the high-temperature interaction reaction evaluation indexes.

Description

【Technical field】 [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a method for measuring the high-temperature interactive reactivity between iron-containing charges of a blast furnace. 【Background technique】 [0002] Due to the obvious differences in chemical composition and microstructure between high-basic sinter and acidic lump ore, pellets and other iron-containing materials, when they are in contact with each other, they are prone to sintering at high temperature under the impetus of concentration gradient. Diffusion and chemical reaction of components occur, which changes the formation of low melting point compounds near the contact surface of iron-containing charge, and then affects the softening and melting behavior of iron-containing charge. This reaction is called high-temperature interactive reaction. [0003] Sinter, natural lump ore and pellets are the main raw materials for modern blast furnace ironmaking. Aft...

Claims

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Application Information

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IPC IPC(8): G01N25/04C21B5/00
CPCG01N25/04C21B5/00
Inventor 陆亚男高远霍红艳吴胜利
Owner UNIV OF SCI & TECH BEIJING
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