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Molten steel purifying agent for removing inclusions in molten steel

A purifying agent and molten steel technology, applied in the field of molten steel purifying agent, can solve the problems of not promoting the growth, floating and removal of inclusions, not lowering the melting point of fine inclusions in steel, modification of inclusions, etc. , to achieve the effect of improving purification effect, promoting removal and uniform distribution

Active Publication Date: 2017-09-05
MAANSHAN HUASHENG METALLURGICAL SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention improves the fluidity of the slag, purifies the molten steel to a certain extent, and reduces the content of inclusions in the molten steel. It can promote the growth, floating and removal of inclusions very well, which is not conducive to further improving the quality of steel products

Method used

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  • Molten steel purifying agent for removing inclusions in molten steel
  • Molten steel purifying agent for removing inclusions in molten steel
  • Molten steel purifying agent for removing inclusions in molten steel

Examples

Experimental program
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Effect test

Embodiment 1

[0032] In this embodiment, a molten steel cleaning agent for removing inclusions from molten steel, the cleaning agent is granular, the cleaning agent is spherical granular, and the particle diameter is 5-10mm; the cleaning agent includes effective components and bonding components points, the mass ratio of the effective component to the bonding component is (5-10): 1, preferably 8:1 in this embodiment, the effective component includes metal aluminum, lime powder, silicon carbide powder, titanium dioxide and biomass, the effective component 50-70 parts of metal aluminum, 20-40 parts of lime powder, 5-20 parts of titanium dioxide, 5-15 parts of silicon carbide powder, 2-4 parts of biomass, the present embodiment chooses: 60kg of metal aluminum, Lime powder 30kg, titanium dioxide 18kg, silicon carbide powder 15kg, biomass 3kg.

[0033] It is worth noting that each component in the effective components is in powder form, and the particle size is ≤0.1mm, that is, metal aluminum, l...

Embodiment 2

[0058] The basic content of this embodiment is the same as that of Example 1, except that the cleaning agent is in the form of granules, the cleaning agent is in the form of spherical particles, and the diameter of the particles is 5-10mm; the cleaning agent includes effective components and bonding components, and the effective components The mass ratio to the adhesive component is (5-10):1, preferably 5:1 in this embodiment.

[0059] The effective components in the purification agent of this embodiment also include graphite powder, red jade soil and magnesium-manganese alloy; the effective components are composed according to the following mass parts, 50-70 parts of metal aluminum, 20-40 parts of lime powder, and 0-30 parts of graphite powder part, 5-20 parts of titanium dioxide, 5-15 parts of silicon carbide powder, 2-4 parts of biomass, 0-1 part of red jade soil, 0-2 part of magnesium-manganese alloy; the present embodiment is 50 kg of metal aluminum, 20 kg of lime powder, ...

Embodiment 3

[0070]The basic content of this embodiment is the same as that of Example 1, except that the adhesive component of the purifying agent also includes starch and kaolin, and the adhesive component is composed of the following parts by mass: 60-80 parts of kaolin, 20-40 parts of sulfonated phenolic resin parts, starch 0-10 parts, oil sands 0-5 parts. This embodiment is composed according to the following mass: 80 kg of kaolin, 40 kg of sulfonated phenolic resin, 5 kg of starch, and 2 kg of oil sand. Detect the total oxygen content in molten steel after modification, and record as shown in Table 1, the data change is as follows figure 1 shown. The mass ratio of the effective component to the binding component is 6:1, and the mixture is obtained after the mixing is completed.

[0071] A kind of preparation method of the molten steel cleaning agent that is used for removing inclusions in molten steel of the present embodiment, concrete steps are as follows:

[0072] Step 1: Prepa...

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Abstract

The invention discloses a molten steel purifying agent for removing inclusions in molten steel, and belongs to the technical field of net steel smelting. The purifying agent is granular, and comprises an effective component and an adhesive component; the mass ratio of the effective component to the adhesive component is (5-10): 1; the effective component comprises metal aluminum, lime powder, silicon carbide powder, titanium dioxide and biomass; the adhesive component comprises kaolin and sulfonated phenolic resins; the purifying agent is spherically granular; and the granular diameter is 5-10 mm. The oxygen content in the molten steel is reduced by the purifying agent; CO gas generated by the reaction accelerates the upward floating removal of the inclusions and the removal of the inclusions in the steel; the inclusions remained in the molten steel treated by the purifying agent are smaller in size and uniformly distributed; the content of the inclusions in the steel treated by the molten steel purifying agent is prominently reduced; the inclusions in the steel are denatured; and the purifying effect of the molten steel is obvious.

Description

technical field [0001] The invention belongs to the technical field of clean steel smelting, and more specifically relates to a molten steel cleaning agent for removing inclusions from molten steel. Background technique [0002] Due to its low price and reliable performance, steel has become one of the most used materials in the world, and it is an indispensable component in construction, manufacturing and people's daily life. It can be said that steel is the material basis of modern society. With the development of society and the continuous improvement of human needs, people have put forward higher requirements for steel materials. The "new generation of steel material" is characterized by ultra-fine grain, high cleanliness and high uniformity (high homogeneity), and its research and development goal is to basically not increase the manufacturing cost, use less alloy resources and energy, and basically not reduce plasticity and toughness. Double the strength and double t...

Claims

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Application Information

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IPC IPC(8): C21C7/04C21C7/06
CPCC21C7/04C21C7/06
Inventor 凌海涛王海军从俊强刘桂成
Owner MAANSHAN HUASHENG METALLURGICAL SCI & TECH DEV
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