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Double-core overall breathable brick, manufacturing method thereof and steel ladle bottom masonry method

A technology of breathable bricks and core bricks is applied in the field of ladle bottom masonry and double-core integral breathable bricks. , the effect of increasing the effective use length

Pending Publication Date: 2019-08-27
CHANGXING KETE CARBORUNDUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the position of the two brick cores is positioned by setting a V-shaped groove on the block brick in this technical solution, but the brick core will be used later, the round hole of the block block will expand accordingly, leaving a V-shaped groove in the middle, it is possible to use two The round holes of the block blocks are connected, causing the overall structure of the block blocks to be damaged, and the erosion will intensify, which has a certain risk of use

Method used

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  • Double-core overall breathable brick, manufacturing method thereof and steel ladle bottom masonry method
  • Double-core overall breathable brick, manufacturing method thereof and steel ladle bottom masonry method
  • Double-core overall breathable brick, manufacturing method thereof and steel ladle bottom masonry method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The invention provides a double-core integral air permeable brick, such as Figure 1-4 As shown, including a block 1, the block 1 is provided with a first core brick 2 and a second core brick 3, the upper end of the second core brick 3 is located below the upper end of the first core brick 2 and the second The upper end of the core brick 3 is covered by the seat brick 1; the part of the seat brick 1 covering the upper end of the second core brick 3 is a reserved layer 10, and a liquid storage tank is opened on the upper surface of the reserved layer 10 11, an empty layer 12 is provided between its lower surface and the upper end of the second core brick 3.

[0055] It is worth noting that by setting the liquid storage tank 11, since there is molten steel in the liquid storage tank 11, it will be brighter than the surrounding area when observed, so when the first core brick 2 reaches the service life, it can be used according to the storage liquid. The position of the g...

Embodiment 2

[0069] The present invention also provides a method for directly prefabricating a double-core integral air-permeable brick, which includes the following manufacturing steps:

[0070] Step 1: After the prefabricated first core brick and the conical surface of the second core brick are evenly coated with refractory mud, they are placed in the seat brick mold with the center of the seat brick mold as the center of symmetry, and the upper end of the second core brick The bottom is 50mm lower than the block mold, and a combustible material with a thickness of 3-5mm is placed in the corresponding air chamber, and the strip-shaped organic matter is fixed on the combustible material to distribute it evenly;

[0071] Step 2, laying combustibles with a thickness of 5mm on the upper end of the second core brick, filling the prefabricated material into the block mold and vibrating to form the block;

[0072] Step 3, pre-embed a circular mold assembly matching the shape of the upper end of...

Embodiment 3

[0075] Taking the installation of Taigang 180t stainless steel clad double-core overall breathable brick as an example, the specific masonry steps are as follows:

[0076] Such as Figure 8As shown, an integral air brick and two double-core integral air bricks described in the above scheme are built with corundum castables in the impact area of ​​molten steel at the bottom of the ladle, where the integral air brick is a single-core air brick, and two The double-core integral breathable bricks are respectively double-core integral breathable brick a and double-core integral breathable brick b. Single-core breathable bricks, double-core integral breathable bricks a and double-core integral breathable bricks b are all used in the non-impact area of ​​molten steel at the bottom. Castable masonry refractory bricks; it should be noted that the single-core breathable brick, the double-core integral breathable brick a and the double-core integral breathable brick b are distributed in ...

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Abstract

The invention provides a double-core overall breathable brick. Two breathable core bricks with different heights are installed in a seat brick, the lower breathable core brick is covered with the seatbrick, a liquid storing tank and an empty layer are arranged, therefore, it is guaranteed that the position of the second core brick can be quickly identified after the first core brick reaches the service life and can not be blocked by molten steel and steel slag, unobstructed ventilation and quick use input are facilitated, the overall life of the breathable brick is prolonged, and the using effect of the breathable brick is improved. The invention further provides a manufacturing method for directly prefabricating the double-core overall breathable brick. The double-core overall breathablebrick is quickly molded by arranging combustibles and a mold assembly for the embedded forming liquid storing tank, and the molding method is simple and easy to operate. The invention further provides a steel ladle bottom masonry method adopting the double-core overall breathable brick. A triangular masonry distribution manner is adopted and combined with the double-blowing combined action of thetwo double-core overall breathable bricks at the bottom of a steel ladle, therefore, the flowing state of the molten steel is effectively improved, mixing of the molten steel is enhanced, the dead zone is reduced, and the floating effect of inclusions is improved.

Description

technical field [0001] The invention relates to the technical field of ladle refining outside the furnace, in particular to a double-core integral air-permeable brick, a manufacturing method thereof, and a ladle bottom masonry method. Background technique [0002] As a high-grade functional refractory component with stable air blowing ability, the breathable brick is widely used in the argon blowing refining process at the bottom of the ladle in major domestic steel mills, that is, blowing argon gas into the molten steel through the ladle breathable brick to stir the molten steel, so that the molten steel The temperature and composition are fast and uniform, and at the same time, it has the effect of making inclusions float up to clean molten steel. [0003] Since the ladle permeable bricks are subjected to thermal stress, gas stress, alternating cold and hot, and erosion and erosion by molten steel during use, they will be damaged. During the production process, they need t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/08B28B23/00B22D41/02B22D1/00
CPCB28B1/08B28B23/00B22D41/02B22D1/005
Inventor 田政权徐剑平田义号姚靓
Owner CHANGXING KETE CARBORUNDUM
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