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Quick sintering repairing mass used for steel mill converter

A technology for rapid sintering and furnace charging, applied in the field of furnace patching materials and their preparation, can solve the problems of reduced production capacity, decreased continuity, poor environmental protection effect, etc., and achieves the effects of improving service life, low porosity, and reducing scouring.

Inactive Publication Date: 2012-07-25
孙宇飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the converter repairing materials used in the iron and steel smelting process are ordinary repairing materials made of magnesia as the main raw material, adding some additives, and using asphalt as a sintering agent. , generally takes 40 to 60 minutes, and the environmental protection effect is poor
As we all know, the pace of steelmaking in steel mills is fast, requiring a certain degree of continuity, and the requirements for environmental protection are also particularly strict, especially the long repair time, resulting in increased costs, reduced production capacity and reduced continuity for steel mills

Method used

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  • Quick sintering repairing mass used for steel mill converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 A rapid sintering repair charge for a converter in a steel plant

[0022] (1) The ratio of raw materials is as follows:

[0023] Fused magnesia (MgO≥96%) 3 mm

[0024] Fused magnesia (MgO≥96%) 1 mm

[0025] Fused magnesia (MgO≥96%) particle size≤1 mm 14%

[0026] Fused magnesia (MgO≥96%) particle size<0.088mm 16%

[0027] Binder 12%

[0028] Sintering agent 15%

[0029] Additive 5%.

[0030] The binding agent is a mixture of ether and ethylene glycol in a weight ratio of 1:1.

[0031] The sintering agent is a mixture of thermoplastic resin, asphalt, hydantoin and industrial naphthalene in a weight ratio of 1:3:2:2.

[0032] The additive is a mixture of metal aluminum powder, magnesia-zirconium sand and spinel powder in a weight ratio of 1:2:2.

[0033] (2) Preparation method:

[0034] 1) According to the percentage by weight, electrofusion with a particle size of 3 mm < particle size ≤ 7 mm, 1 mm < particle siz...

Embodiment 2

[0039] Example 2 A rapid sintering repair charge for a converter in a steel plant

[0040] (1) The ratio of raw materials is as follows:

[0041] Fused magnesia 3 mm

[0042] Fused magnesia 1 mm

[0043] Fused magnesia particle size≤1mm 10%

[0044] Fused magnesia particle size<0.088mm 15%

[0045] Binder 8%

[0046] Sintering agent 10%

[0047] Additive 2%.

[0048] The binding agent is a mixture of ether and engine oil in a weight ratio of 2:1.

[0049] The sintering agent is a mixture of thermoplastic resin, asphalt, hydantoin and industrial naphthalene in a weight ratio of 1:1:3:3.

[0050] The additive is a mixture of metal aluminum powder, magnesia-zirconium sand and ethylene glycol in a weight ratio of 1:3:1.

[0051] (2) The preparation method is the same as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0052] Example 3 A rapid sintering repair charge for a converter in a steel plant

[0053] (1) The ratio of raw materials is as follows:

[0054] Fused magnesia 3mm

[0055] Fused magnesia 1 mm

[0056] Fused magnesia particle size ≤ 1 mm 18%

[0057] Fused magnesia particle size<0.088mm 20%

[0058] Binder 5%

[0059] Sintering agent 10%

[0060] Additives 9%.

[0061] The binder is a mixture of ethylene glycol and anthracene oil in a weight ratio of 1:1.

[0062] The sintering agent is a mixture of thermoplastic resin, asphalt, hydantoin and industrial naphthalene in a weight ratio of 1:4:1:1.

[0063] The additive is a mixture of metal aluminum powder, magnesia-zirconium sand and spinel powder in a weight ratio of 1:1:3.

[0064] (2) The preparation method is the same as in Example 1, and the results are shown in Table 1.

[0065]

[0066] Table 1

[0067]

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Abstract

The invention relates to a quick sintering repairing mass used for a steel mill converter and a preparation method thereof. The technical scheme adopted in the invention is as follows: the quick sintering repairing mass is prepared from the following raw materials in parts by weight: 20-45% of fused magnesite of which the granularity is more than 3mm and is less than or equal to 7mm, 10-25% of fused magnesite of which the granularity is more than 1mm and is less than or equal to 3mm, 10-25% of fused magnesite of which the granularity is less than or equal to 1mm, 15-35% of fused magnesite of which the granularity is less than 0.088mm, 5-16% of bonding agent, 10-20% of agglutinant and 2-10% of additive. The quick sintering repairing mass is mainly suitable for repairing and maintaining the converter, the service life of the converter can be improved, and the fettling time can be shortened to 15-25 minutes.

Description

Technical field [0001] The present invention involves a replenishment material and preparation method for repairing and maintaining steel plants. Background technique [0002] At present, the furnace supplement materials used in the steel smelting process are magnesium as the main raw material, add some additives, and use asphalt, etc. as a sintering agent, and uniformly mixed., Generally, it takes 40 to 60 minutes, and the environmental protection effect is poor.As we all know, the steel manufacturer has a fast rhythm and requires a certain amount of continuity, and the environmental protection requirements are particularly strict, especially for a long time of replenishment, which causes increased costs to steel mills and decreased in production capacity and decreased continuity. Invention content [0003] The purpose of the present invention is to provide a fast -cost sintering furnace with a low cost, short -furnace replenishment time. [0004] The technical solution adopted...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/622
Inventor 孙宇飞
Owner 孙宇飞