Refractory material for iron and steel metallurgy

A refractory material and iron and steel metallurgy technology, which is applied in the field of molten iron desulfurization pretreatment process, can solve the problems of poor thermal shock resistance, poor corrosion resistance, and molten iron erosion, and achieve excellent performance, good corrosion resistance, and improved bonding strength.

Inactive Publication Date: 2017-08-29
嘉兴新耐建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a refractory material for iron and steel metallurgy, that is, a refractory material for a desulfurization gun, and particularly relates to a refractory castable used in a desulfurization spray gun. Structural spalling, thermal spalling, etc. cause short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment provides a castable for a desulfurization mixing gun, which is prepared by the following preparation method:

[0020] Carry out batching according to following weight ratio: sillimanite 19 weight parts; Ti 3 AlC 3 1 part by weight; 18 parts by weight of calcium hexaaluminate; 18 parts by weight of white corundum; 12 parts by weight of chrome corundum; 9 parts by weight of sillimanite fine powder; 4 parts by weight of copper-iron spinel fine powder; 5 parts by weight of nickel oxide powder, 5 parts by weight of pure calcium aluminate cement, 4 parts by weight of aluminum gel powder; 0.35 parts by weight of additive.

[0021] Wherein, preferably, the aluminum content of the sillimanite is ≥60%.

[0022] Wherein, preferably, the calcium aluminum hexaaluminate content is ≥70%.

[0023] Wherein, preferably, the white corundum aluminum content is ≥90%.

[0024] Wherein, preferably, the aluminum content of the aluminum-rich spinel is ≥78%.

[0025] Wherein...

Embodiment 2

[0028] Carry out batching according to following weight ratio: sillimanite 17 weight parts; Ti 3 AlC 3 2 parts by weight; 18 parts by weight of calcium hexaaluminate; 18 parts by weight of white corundum; 15 parts by weight of chrome corundum; 10 parts by weight of sillimanite powder; 3 parts by weight of copper-iron spinel powder; 4 parts by weight of nickel oxide powder, 4 parts by weight of pure calcium aluminate cement, and 3 parts by weight of aluminum gel powder; plus 0.35 parts by weight of additives.

[0029] Wherein, preferably, the aluminum content of the sillimanite is ≥60%.

[0030] Wherein, preferably, the calcium aluminum hexaaluminate content is ≥70%.

[0031] Wherein, preferably, the white corundum aluminum content is ≥90%.

[0032] Wherein, preferably, the aluminum content of the aluminum-rich spinel is ≥78%.

[0033] Wherein, preferably, preferably, the purity of the aluminum gel powder is ≥99%; Ti 3 AlC 3 Purity≥99%.

[0034] Among them, preferably, t...

Embodiment 3

[0036] Carry out batching according to following weight ratio: sillimanite 10 weight parts; Ti 3 AlC 3 3 parts by weight; 17 parts by weight of calcium hexaaluminate; 20 parts by weight of white corundum; 15 parts by weight of chrome corundum; 10 parts by weight of sillimanite fine powder; 5 parts by weight of copper-iron spinel fine powder; 5 parts by weight of nickel oxide powder, 5 parts by weight of pure calcium aluminate cement, and 2 parts by weight of aluminum gel powder; plus 0.35 parts by weight of additives.

[0037] Wherein, preferably, the aluminum content of the sillimanite is ≥60%.

[0038] Wherein, preferably, the calcium aluminum hexaaluminate content is ≥70%.

[0039] Wherein, preferably, the white corundum aluminum content is ≥90%.

[0040] Wherein, preferably, the aluminum content of the aluminum-rich spinel is ≥78%.

[0041] Wherein, preferably, preferably, the purity of the aluminum gel powder is ≥99%; Ti 3 AlC 3 Purity≥99%.

[0042] Among them, pre...

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Abstract

The invention provides a refractory material for iron and steel metallurgy. The refractory material solves the problem that the existing agitator has a short service life because of structure spalling and thermal spalling caused by poor erosion resistance, severe molten iron erosion and poor thermal shock resistance. The refractory material comprises 10 to 20 parts by weight of sillimanite, 1 to 3 parts by weight of Ti3AlC3, 10 to 20 parts by weight of calcium hexaluminate, 10 to 20 parts by weight of white corundum, 5 to 15 parts by weight of chrome corundum, 5 to 10 parts by weight of sillimanite micro-powder, 3 to 5 parts by weight of cuprospinel micro-powder, 3 to 8 parts by weight of aluminum-rich spinel powder, 3 to 5 parts by weight of nickel oxide powder, 2 to 5 parts by weight of pure calcium aluminate cement, 2 to 4 parts by weight of aluminum gel powder and 0.35 parts by weight of additives. The above raw materials are blended according to the above ratio so that the refractory castable material for a desulfurization gun is obtained.

Description

technical field [0001] The invention relates to the technical field of molten iron desulfurization pretreatment technology in the iron and steel metallurgy industry, in particular to a refractory material for iron and steel metallurgy, that is, a refractory castable for a desulfurization gun. Background technique [0002] Stirring desulfurization method is a kind of desulfurization technology outside the molten iron furnace that Japan's Nippon Steel Wentian Iron Works began to study in 1963 and was applied to industrial production in 1965. The desulfurization method has the characteristics of high desulfurization efficiency, less desulfurization agent consumption, short operation time, low metal consumption and low refractory material consumption. In the 1970s, my country's WISCO introduced stirring desulfurization technology from Japan's Nippon Steel, and other domestic companies also successively introduced or designed and prepared stirring desulfurization production lines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C21C7/064
CPCC04B35/66C04B2235/3217C04B2235/3222C04B2235/3279C04B2235/3463C04B2235/3817C04B2235/402C04B2235/447C04B2235/50C04B2235/5208C21C7/064
Inventor 王杉杉
Owner 嘉兴新耐建材有限公司
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