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A kind of anhydrous micro-titanium accumulation material for blast furnace iron taphole and preparation method thereof

A blast furnace tapping and micro-titanium technology, which is applied in the field of refractory materials for blast furnace tapholes, can solve the problems of poor construction operability of micro-titanium deposits, increased lung cancer mortality, and fast hardening speed, so as to protect human health and the natural environment , Improve the anti-slag erosion and anti-scouring ability, and improve the effect of plasticity

Active Publication Date: 2020-09-29
义马宝宜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1, 2-type benzopyrene is a chemical product that is strictly controlled and used. Studies have shown that for every 1% increase in the content of benzopyrene in the air, the mortality rate of lung cancer will increase by 5%.
Therefore, developed countries strictly control the use of asphalt, anthracene oil, and tar combined products with high benzopyrene content; and for the micro-titanium accumulation material combined with phenolic resin, due to the existence of benzene and formaldehyde, it also pollutes the environment to a certain extent, and the resin The hardening speed of the combined micro-titanium accumulation material is too fast, resulting in poor construction operability of the micro-titanium accumulation material, and problems such as broken iron holes during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The anhydrous micro-titanium accumulation material for the blast furnace taphole of the present invention is represented by weight percentage. The anhydrous micro-titanium accumulation material is composed of raw materials such as 23% of dense corundum, 5% of kyanite, 22% of coke, and 8% of Guangxi white mud. %, 5% silicon powder, 5% silicon carbide, 5% sericite, 5% silicon nitride, 5% titanium silicide and 17% composite binder.

[0039] The 23% of dense corundum is composed of 10% of dense corundum with a particle size of 1-3mm, 7% of dense corundum of 0-1mm and 6% of 200-mesh dense corundum;

[0040] The 17% composite binder is composed of 7% silica-alumina sol, 5% furfuryl alcohol resin and 5% organosilicon modified phenolic resin.

Embodiment 2

[0042] Embodiment 1 of the present invention is a preparation method of anhydrous micro-titanium accumulation material for a blast furnace taphole. The detailed steps of the preparation method are as follows:

[0043] A, first prepare various raw materials according to the raw material composition ratio of anhydrous micro-titanium accumulation material described in embodiment 1;

[0044] b. Add other raw materials except the composite binder into a reaction kettle with a powerful stirring paddle, and stir vigorously for 1 hour to obtain a dry mixed material;

[0045] c. Preparation of composite binder: first add silica-alumina sol into a reaction kettle with a powerful stirring paddle and heat to 60°C, add furfuryl alcohol resin under constant stirring, stir vigorously for 0.5h after adding, and finally add organic silicon modification Phenolic resin, vigorously stirred for 1h to obtain a composite binder;

[0046] d. Wet mixing: adding the composite binder obtained in step c...

Embodiment 3

[0049] The anhydrous micro-titanium accumulation material for the blast furnace taphole of the present invention is expressed in weight percent, and the anhydrous micro-titanium accumulation material is composed of 25% of raw materials dense corundum, 3% of kyanite, 20% of coke, and 10% of Guangxi white mud. %, 3% silicon powder, 7% silicon carbide, 3% sericite, 7% silicon nitride, 7% titanium silicide and 15% composite binder.

[0050] The 25% of the dense corundum is composed of 11% of the dense corundum with a particle size of 1-3mm, 7% of the dense corundum of 0-1mm and 7% of the 200-mesh dense corundum;

[0051] 15% of the composite binder is composed of 6% of silica-alumina sol, 5% of furfuryl alcohol resin and 4% of organosilicon modified phenolic resin.

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Abstract

The invention discloses an anhydrous micro titanium stacking material used for a blast furnace taphole and a preparation method of the stacking material. The anhydrous micro titanium stacking materialis mainly prepared from the following raw materials in percentages by weight: 20-25% of compact corundum, 3-8% of kyanite, 20-25% of coke, 5-10% of Guangxi white mud, 3-8% of silicon powder, 3-8% ofsilicon carbide, 3-8% of sericite, 3-8% of silicon nitride, 3-8% of titanium silicide, and 15-20% of a composite binder. The product anhydrous micro titanium stacking material used for the blast furnace taphole prepared by utilizing the technical scheme provided by the invention has easy sintering, high strength, flushing resistance and erosion resistance; the stacking material is easy to open, and molten iron and molten slag can be guaranteed to flow out at a uniform speed; and during the use, no yellow smoke appears, the stacking material has the characteristics of protecting the environmentand saving energy, and the product performance is excellent.

Description

[0001] 1. Technical field: [0002] The invention relates to a refractory material for a blast furnace taphole, in particular to an anhydrous micro-titanium accumulation material for a blast furnace taphole and a preparation method thereof. [0003] 2. Background technology: [0004] Micro-titanium accumulation material is a refractory material used to block the blast furnace taphole, and can be divided into two categories: water micro-titanium accumulation material and anhydrous micro-titanium accumulation material. Hydrogen micro-titanium deposits are mostly used in small and medium-sized blast furnaces with low top pressure and low degree of intensified smelting, while anhydrous micro-titanium deposits are mostly used in large and medium-sized blast furnaces with high top pressure and high degree of intensified smelting. In the blast furnace operation of the iron and steel plant, the role of micro-titanium accumulation is like a valve, which determines the sealing and blocki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/103
CPCC04B35/103C04B2235/3463C04B2235/3472C04B2235/349C04B2235/3826C04B2235/3873C04B2235/3891C04B2235/422C04B2235/428C04B2235/5427C04B2235/5436C04B2235/5463C04B2235/77
Inventor 赵国栋赵亚辉
Owner 义马宝宜新材料有限公司
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