Additive for pouring box dry vibrating material and preparation method and application thereof

A vibrating material and additive technology, which is applied in the field of steelmaking, can solve problems such as poor sintering strength, difficult demoulding, and difficult demoulding, so as to achieve the effect of reducing damage and improving high temperature corrosion resistance

Inactive Publication Date: 2011-08-31
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Poor sintering strength, poor corrosion resistance, and difficult demoulding often occur during use. The erosion thickness is 20-30 mm each time the offline layer is sintered, and sometimes the working layer and the permanent layer are sintered together, resulting in difficulty in demoulding and damage to the permanent layer. corresponding damage

Method used

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  • Additive for pouring box dry vibrating material and preparation method and application thereof
  • Additive for pouring box dry vibrating material and preparation method and application thereof
  • Additive for pouring box dry vibrating material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh 50 parts of magnesia-chrome brick powder, 10 parts of borax, and 40 parts of ferric oxide powder, and mix the three weighed materials in a "V-shaped" mixing mixer for 5 minutes, and then MQG1200×3000 The ball mill is ground to -325 mesh to form a product.

Embodiment 2

[0048] Weigh 60 parts of magnesia-chrome brick powder, 10 parts of borax, and 30 parts of ferric oxide powder, and mix the three weighed materials in a "V-type" mixing mixer for 5 minutes, and then MQG1200×3000 The ball mill is ground to -325 mesh to form a product.

Embodiment 3

[0050] Weigh 70 parts of magnesia-chrome brick powder, 10 parts of borax, and 20 parts of Fe2O3 powder, and mix the three weighed materials in a "V-shaped" mixing mixer for 5 minutes, and then grind them with a MQG1200×3000 ball mill As fine as -325 mesh, form a product.

[0051] Add the product of embodiment 1-3 and the effect contrast of original dry type vibrating material in dry vibrating material

[0052] The products of Examples 1-3 were added to the dry vibrating material, and their 1100°C×3h compressive strength and slag erosion thickness were compared. See Table 4 for the comparison.

[0053] Table 4 Detection and use of each product

[0054]

[0055] From the usage situation in Table 4, by adding the special additive of the present invention to the dry vibrating material, the performance indicators of the dry vibrating material are all improved, and the compressive strength of the proportion three 1100 ° C × 3h is improved 5MPa, the slag erosion thickness is reduc...

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Abstract

The invention relates to an additive for a pouring box dry vibrating material, which is used in the continuous steel casting process of a large-sized steel making enterprise, and a preparation method and application thereof, belonging to the technical field of steel making. The first technical problem to the solved of the invention is to provide an additive for the pouring box dry vibrating material, which is used for solving the problem of sintering intensity of the dry vibrating material and meeting the requirement of continuous steel casting. The technical scheme of the invention is that: the additive consists of the following components in parts by weight: 50-80 parts of magnesia-chromite brick powder, 10-30 parts of borax and 10-25 parts of ferric oxide powder. When the additive is applied to the pouring box dry vibrating material, the problems of poor medium-temperature sintering of a product, low pressure resistance (the pressure resistance is enhanced from 10 MPa to 15 MPa by 5 MPa at the temperature of 1,100 DEG C), poor corrosion resistance at high temperature (the molten slag corrosion thickness is reduced from 20-30 millimeters to 15-20 millimeters by 8 millimeters on average) and severe sintering are solved, and a new thought is provided for technical personnel in the field.

Description

technical field [0001] The invention relates to a preparation method and an application of an additive for a tundish dry-type vibrating material used in the continuous casting steel pouring process of a large-scale steelmaking enterprise and belongs to the technical field of steelmaking. Background technique [0002] After the 1970s, the continuous casting process of steelmaking enterprises has developed rapidly, which is characterized by fast process speed, concentrated investment and increasingly perfect technology. In 1970, the continuous casting ratio in the world was only 5.6%, and by 1990, the continuous casting ratio in the world had reached 62.4%, and the continuous casting ratio in some developed countries exceeded 95%. In recent years, many steel mills in the world have realized full continuous casting production. Compared with the traditional steelmaking die casting process, continuous casting has the advantages of increasing metal yield and reducing energy consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 青光红陈涛吴胜利黄国炳郑德明毛朋
Owner PANZHIHUA GANGCHENG GROUP
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