Flame-proof pouring material and launder prefabricated component for copper anode furnace

Abstract

The present invention provides an improvement of fire-resistant material for copper-anode furnace flow groove. The present invention is characterized in that the basic components are 50 to 80 weight percent of SiC, 0 to 40 weight percent of fire-resistant material containing Al2O3, 1 to 20 weight percent of micro powder, 1 to 4 weight percent of C, 1 to 3 weight percent of Si, 0.5 to 5 weight percent of cement binder. The chemical component after mixing is 48 to 78 weight percent of SiC, 10 to 40 weight percent of Al2O3, 4 to 8 percent of SiO2, less than or equal to 6 weight percent of C, less than or equal to 3 weight percent of CaO, and less than or equal to 6 weight percent of Si. Compared with the prior art, the present invention has the characteristics of good thermal shock resistance, good high-temperature erosion resistance, non-stick liquid copper and copper slag, convenient cleaning, long service life and so on. The one-time service life reaches above 20 furnaces with copper. Besides, the construction is simple and the labor intensity of workers is greatly lowered. When used for the first time, the device should be baked rapidly; when used later, no baking is needed. Thus the present invention saves the baking cost and facilitates the production turnover of copper plants.

Description

technical field [0001] The invention relates to a refractory castable, in particular to a refractory castable and a prefabricated part for a launder of a copper anode furnace. Background technique [0002] The high-temperature (1300℃~1400℃) copper water pouring after smelting in copper anode furnace needs to go through tundish, launder, swing tundish, and finally fill into the mold and cast into copper plate. Due to intermittent copper discharge, refractory materials for tundish, launder and swing tundish need to have: excellent high temperature erosion resistance, excellent thermal shock resistance; non-stick copper water and copper slag, not to be affected by molten copper Erosion, easy to clean. [0003] At present, refractory materials for copper anode furnace tundish, fixed launder, and swing tundish are commonly used in magnesium chromium, Al 2 o 3 - SiC-based ramming and spreading materials. However, magnesium chromium, Al 2 o 3 - SiC refractories are easy to st...

AI Technical Summary

Problems solved by technology

However, magnesium chromium, Al 2 o 3 - SiC refractories are easy to stick to copper, so after each copper out, it needs to be cleaned and removed, and then smeared, repaired and baked, which is labor-intensive; secondly, magnesium chromium, Al 2 o 3 -SiC refractory material has low strength, and it is easy to peel off during the copper tapping process, which is easy to cause cold copper. The amount of cold copper generated is about 1.5t / furnace, and the remelting increases the production cost; moreover, the service life of the ramming material is short. Can withstand 2 to 10 furnaces of copper; the service life of the smear is shorter, and can withstand 1 to 3 furnaces of copper, and the cost of use is higher

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