Bismuth reverberatory retaining wall castable for smelting

Abstract

The invention belongs to the technical field of refractory materials, and in particular relates to a bismuth reverberatory retaining wall castable for smelting. The bismuth reverberatory retaining wall castable for smelting is prepared from the following raw materials in parts by weight: 50 to 60 parts of a first component and 40 to 50 parts of a second component, wherein the first component is prepared from the following raw materials in parts by weight: 34 to 42 parts of spinel, 15 to 23 parts of aluminum metal, 17 to 21 parts of silicon metal, and 38 to 40 parts of pink fused alumina; the second component is prepared from the following raw materials in parts by weight: 15 to 25 parts of a suspending agent and 75 to 85 parts of a binder. The bismuth reverberatory retaining wall castablefor smelting is resistant to high temperature and corrosion, long in service life, and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a bismuth reverberatory furnace retaining wall castable for smelting. Background technique [0002] The reverberatory furnace is a chamber-type flame furnace. The heat transfer method in the furnace is not only by the reflection of the flame, but also by the radiation heat transfer of the furnace roof, furnace wall and hot gas. It is often used in non-ferrous metal smelting. In the production process, the reverberatory furnace The masonry of the retaining wall is subjected to high flame temperature, mechanical and slag chemical erosion, so the erosion degree of the reverberatory furnace retaining wall determines the lifetime of the reverberatory furnace. Nowadays, there are two ways to make the reverberatory furnace retaining wall, masonry method and casting method The masonry method is to divide the reverberatory furnace retaining wall into two layers. T...

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Problems solved by technology

[0002] The reverberatory furnace is a chamber-type flame furnace. The heat transfer method in the furnace is not only by the reflection of the flame, but also by the radiation heat transfer of the furnace roof, furnace wall and hot gas. It is often used in non-ferrous metal smelting. In the production process, the reverberatory furnace The masonry of the retaining wall is subjected to high flame temperature, mechanical and slag chemical erosion, so the erosion degree of the reverberatory furnace retaining wall determines the lifetime of the reverberatory furnace. Nowadays, there are two ways to make the reverberatory furnace retaining wall, masonry method and casting method The masonry method is to divide the reverberatory furnace retaining wall into two layers. The inner layer is mostly built with magnesia bricks and magnesia-aluminum bricks, and the outer layer is built with clay bricks. However, the reverberatory furnace retaining wall made by the masonry method has poor integrity. The strength of corrosion resistance is low, and the effect of thermal shock resistance is poor; the pouring method uses a pump to pump the pouring material into the mold for making the reverberatory furnace retaining wall. During the casting process, there will be a large amount of dust floating, accompanied by the escape of irritating gas; in the smelting process of metal bismuth, the existing casting materials will not only produce a large amount of harmful gases, but also produce strong alkaline harmful substances Accelerate the corrosion of the furnace body, so the existing technology needs further improvement

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