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A medium-frequency furnace bottom blowing argon ventilation brick and its preparation method

A gas permeable brick and bottom argon blowing technology, which is applied in the field of high temperature smelting and purification, can solve the problems of low air permeability, inability to solve the problem of permeable brick leakage, and high production cost of permeable bricks, so as to improve the anti-leakage performance and achieve good synchronism Effect, the effect of improving the anti-slag erosion performance

Active Publication Date: 2021-06-15
襄阳聚力新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation cost of the air-permeable brick with this structure is high, and the common leakage problem of the air-permeable brick cannot be solved, and the air-permeable performance is still not high

Method used

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  • A medium-frequency furnace bottom blowing argon ventilation brick and its preparation method
  • A medium-frequency furnace bottom blowing argon ventilation brick and its preparation method
  • A medium-frequency furnace bottom blowing argon ventilation brick and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Classification and preparation: according to the ratio of each component, weigh 60 parts of corundum particles and fine powder, 10 parts of magnesium aluminum spinel fine powder, 1 part of gel powder, 2 parts of binder, dispersant 1 part, and respectively bagged and labeled as raw materials for contacting air-permeable bricks, wherein the binder is formulated according to 85 parts of alumina particles, 0.1 parts of calcium oxide particles, 0.5 parts of silica particles, 0.3 parts of cobalt aluminum oxide particles, and 0.1 parts of sodium oxide particles The dispersant is weighed according to the ratio of 60 parts of sodium tripolyphosphate, 15 parts of sodium hydroxymethanesulfonate, and 10 parts of ammonium polyacrylate; 80 parts of powder, 5 parts of activated alumina fine powder, 1 part of gel powder, and 1 part of water reducer, which are respectively bagged and marked as raw materials for argon-blowing permeable bricks;

[0040] (2) Classified mixing and stirr...

Embodiment 2

[0048](1) Classification and preparation of materials: according to the ratio of each component, weigh 80 parts of corundum particles and fine powder, 20 parts of magnesium aluminum spinel fine powder, 5 parts of gel powder, 8 parts of binder, dispersant 5 parts, and respectively bagged and marked as raw materials for contacting air-permeable bricks, wherein the binder is formulated according to 90 parts of alumina particles, 0.5 parts of calcium oxide particles, 1 part of silica particles, 0.5 parts of cobalt aluminum oxide particles, and 0.3 parts of sodium oxide particles. The dispersant is weighed according to the ratio of 70 parts of sodium tripolyphosphate, 20 parts of sodium hydroxymethanesulfonate, and 15 parts of ammonium polyacrylate; 100 parts of powder, 10 parts of activated alumina fine powder, 5 parts of gel powder, and 5 parts of water reducer, which are respectively bagged and marked as raw materials for argon-blowing permeable bricks;

[0049] (2) Classified m...

Embodiment 3

[0057] (1) Classification and preparation of materials: according to the ratio of each component, weigh 70 parts of corundum particles and fine powder, 15 parts of magnesium aluminum spinel fine powder, 3 parts of gel powder, 5 parts of binder, dispersant 3 parts, and respectively bagged and labeled as raw materials for contacting air-permeable bricks, wherein the binder is formulated according to 87 parts of alumina particles, 0.3 parts of calcium oxide particles, 0.8 parts of silica particles, 0.4 parts of cobalt aluminum oxide particles, and 0.2 parts of sodium oxide particles. The dispersant is weighed according to the ratio of 65 parts of sodium tripolyphosphate, 18 parts of sodium hydroxymethanesulfonate, and 13 parts of ammonium polyacrylate; 90 parts of powder, 8 parts of activated alumina fine powder, 3 parts of gel powder, and 3 parts of water reducer, which are respectively bagged and marked as raw materials for argon-blowing permeable bricks;

[0058] (2) Classifie...

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Abstract

The present invention provides an argon-blowing ventilation brick at the bottom of an intermediate frequency furnace, which is divided into two parts: the contact ventilation brick at the upper part and the argon-blowing ventilation brick at the lower part. The contact ventilation brick contains the following components corresponding to the following parts by weight: corundum particles and fine powder 60‑80 parts; magnesium aluminum spinel fine powder 10‑20 parts; gel powder 1‑5 parts; binder 2‑8 parts; dispersant 1‑5 parts. The object of the present invention is to provide an argon-blowing ventilation brick at the bottom of an intermediate frequency furnace with anti-leakage, good ventilation effect and low production cost.

Description

technical field [0001] The invention relates to the technical field of high-temperature smelting and purification, in particular to an argon-blowing ventilation brick at the bottom of an intermediate frequency furnace and a preparation method thereof. Background technique [0002] At the end of the 20th century, a technology developed in the field of iron and steel smelting to remove impurities in molten steel, that is, the blowing technology of installing breathable bricks at the bottom of the ladle, the principle is to install breathable bricks at the bottom of the ladle, and blow oxygen or Other gases, on the one hand, further reduce impurities such as carbon in molten steel, and on the other hand, the blown gas flows from bottom to top in molten steel to stir molten steel, thereby improving the efficiency of smelting. Air permeable bricks play a key role in this process. They are mainly made of refractory materials and must have good air permeability, high temperature re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/101C04B38/00B22D41/02
Inventor 万少丰
Owner 襄阳聚力新材料科技有限公司
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