Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method of converter slag-stopping sliding plate brick

A composite powder, converter slag blocking technology, applied in the field of refractory materials, can solve problems such as complex production process, achieve the effects of high melting point, simple composition of raw materials, and good thermal shock resistance

Inactive Publication Date: 2020-03-27
MAANSHAN LIER KAIYUAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the present invention also provides a preparation method for adding titanium nitride composite powder to converter slag-blocking sliding bricks. Through the composition of the above-mentioned optimized raw material formula, the existing high-strength converter slag-stopping sliding bricks have complex production processes and require high temperature. burning problem

Method used

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  • Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method of converter slag-stopping sliding plate brick
  • Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method of converter slag-stopping sliding plate brick
  • Converter slag-stopping sliding plate brick added with titanium nitride composite powder and preparation method of converter slag-stopping sliding plate brick

Examples

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Effect test

Embodiment 1

[0063] A converter slag-blocking sliding brick containing titanium nitride composite powder in this embodiment, the composition and mass parts of its formula are:

[0064] 5 parts of fused zirconia corundum with a particle size of 1-3mm;

[0065] 25 parts of tabular alumina with a particle size of 1-2mm;

[0066] 15 parts of tabular alumina with a particle size of 1-0.5mm;

[0067] 15 parts of tabular alumina with a particle size of 0.5-0mm;

[0068] 5 parts of silicon carbide with a particle size of 1-0 mm;

[0069] 15 parts of tabular corundum powder with a particle size of 325 mesh;

[0070] 3 parts of 98 metal silicon powder with a particle size of 325 mesh;

[0071] 6 parts of metal aluminum powder with a particle size of 200 mesh;

[0072] 7 parts of α calcined alumina powder with a particle size of 2 μm;

[0073] 1.5 parts of boron carbide powder with a particle size of 325 mesh;

[0074] 1 part of nano zirconia powder with a particle size of 1 μm;

[0075] 1.5 ...

Embodiment 2

[0091] In this example, the formula of Example 2 shown in the following Table 2 was used to prepare converter slag-blocking sliding bricks containing titanium nitride composite powder, and the parameter conditions of the preparation method were slightly different.

[0092] Utilize the recipe of Example 2 shown in Table 2 to prepare the converter slag-blocking sliding brick containing titanium nitride composite powder of this example, the steps are:

[0093] (1) Ingredients of pellets: mix pellets according to the mass parts of the above raw materials, that is, 5 parts of fused zirconia corundum of 1-3mm, 25 parts of tabular corundum of 1-2mm, 15 parts of tabular alumina of 1-0.5mm, 0.5- 15 parts of 0mm tabular alumina, 5 parts of 1-0mm silicon carbide;

[0094] (2) Premixed powder: The composite powder and solid phenolic resin powder are vacuumized (to prevent oxidation) and dry mixed for 25 minutes by a planetary vibrating high-energy ball mill, so that the fine powder compon...

Embodiment 3

[0103] In this example, the formula of Example 3 shown in the following Table 2 was used to prepare converter slag-blocking sliding bricks containing titanium nitride composite powder, and the parameter conditions of the preparation method were slightly different.

[0104] Utilize the recipe of Example 3 shown in Table 2 to prepare the converter slag-blocking sliding brick containing titanium nitride composite powder of this example, the steps are:

[0105] (1) Ingredients of pellets: mix pellets according to the mass parts of the above raw materials, that is, 5 parts of fused zirconia corundum of 1-3mm, 25 parts of tabular corundum of 1-2mm, 15 parts of tabular alumina of 1-0.5mm, 0.5- 15 parts of 0mm tabular alumina, 5 parts of 1-0mm silicon carbide;

[0106] (2) Premixed powder: The composite powder and solid phenolic resin powder are vacuumized (to prevent oxidation) and dry mixed for 35 minutes by a planetary vibrating high-energy ball mill, so that the fine powder compon...

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Abstract

The invention discloses a converter slag-stopping sliding plate brick added with titanium nitride composite powder and a preparation method of the converter slag-stopping sliding plate brick, and belongs to the technical field of refractory materials. The converter slag stopping sliding plate brick comprises a granular material, composite powder and an additive, wherein the granular material comprises high-hardness materials with various particle sizes, the composite powder comprises titanium nitride powder and other antioxidant powder materials, the additive comprises a high-melting-point material, and the addition amount of the additive is 1.5-4.5% of the total mass of the granular material and the composite powder. The titanium nitride composite powder converter slag-stopping sliding plate brick is prepared through the processes of mixing, forming, drying, grinding and the like. The converter slag-stopping sliding plate brick prepared by the invention is short and simple in production process period, is free of firing and oil soaking, energy-saving and environment-friendly, has good high-temperature strength and breaking strength in use, also has good thermal shock resistance and wear resistance, has relatively high chemical erosion resistance in a high-temperature tapping process, and can meet efficient production and safe use of converter steelmaking.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a converter slag-retaining slide brick added with titanium nitride composite powder and a preparation method thereof. Background technique [0002] During converter steelmaking and tapping, the amount of slag directly affects the quality of molten steel. At the same time, the market requirements for steel quality are increasing, such as special steel, ultra-low carbon steel, and clean steel. In this context, the technology of controlling slag by converter baffle plate to reduce the amount of slag dropped during tapping of converter to improve the cleanliness of molten steel and the quality of steel products has been widely used. The converter slag blocking sliding brick is based on the installation of a sliding tapping mechanism at the end of the tapping hole of the converter, and the opening or closing of the sliding nozzle mechanism is controlled by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/106C21C5/46
CPCC04B35/106C04B2235/3821C04B2235/3826C04B2235/3886C04B2235/402C04B2235/428C04B2235/48C04B2235/483C04B2235/5427C04B2235/602C04B2235/606C04B2235/77C04B2235/96C04B2235/9607C04B2235/9676C21C5/4653
Inventor 徐昆波原慧张远红余西平赵锋狄书江方岩震周亮陈正常张国胜刘辉
Owner MAANSHAN LIER KAIYUAN NEW MATERIAL
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