Iron runner casting material using waste alumino-silicon-carbide carbon bricks as aggregate

Abstract

The invention discloses an iron runner casting material using waste alumino-silicon-carbide carbon bricks as an aggregate, and belongs to the technical field of refractory materials. The casting material consists of the following components in percentage by weight: 50 to 56 percent of waste alumino-silicon-carbide carbon brick granules, 12 to 18 percent of No.88 high bauxite aggregate, 2 to 3 percent of spherical modified hard pitch, 11 to 13 percent of silicon carbide fine powder, 0 to 2 percent of white corundum fine powder, 2 to 3 percent of pure calcium aluminate cement, 12 to 14 percent of oxide fine powder, 1.7 to 1.8 percent of antioxidant, 0.04 to 0.06 percent of explosion-proof fibers, and 0.16 to 0.24 percent of dispersant. The prepared iron runner casting material has the characteristics of good flowability, high strength, good slag resistance, quick drying, explosion resistance and the like. The utilization rate of the waste alumino-silicon-carbide carbon bricks is high, the comprehensive cost is greatly reduced, and economic benefits and social benefits are predominant. The iron runner casting material can be widely applied to feeder drains and slag runners of blast furnace casting houses.

Description

technical field [0001] The invention belongs to the technical field of indeterminate refractory materials; in particular, it relates to a casting material for branch ditches and slag ditches of casthouses, which uses waste aluminum silicon carbide carbon bricks as aggregates. Background technique [0002] In the existing technology, in recent years, with the continuous downturn of the iron and steel industry, the pressure of various iron and steel enterprises to reduce costs has increased sharply, and refractory materials have also become an important link in the iron and steel industry to reduce costs and increase efficiency. The blast furnace casthouse is an important part of the ironmaking process. The overall contracted price per ton of iron in the casthouse has dropped again and again, which has kept suppliers in a state of zero profit for a long time, and the price reduction has also laid hidden dangers for safe production. At the same time, large and medium-sized iron...

AI Technical Summary

Problems solved by technology

However, due to the high water absorption rate of waste aluminum silicon carbide carbon brick aggregate, the castable with waste aluminum silicon carbide carbon brick as the main raw material needs to add more water, which leads to low strength after baking, which affects the waste aluminum silicon carbide carbon brick. Performance of bricks as castables

[0003] "An Al 2 o 3 -Preparation method of SiC-C iron channel castable" (publication number: CN1661117A) describes a preparation method of iron channel castable using in-situ reaction to generate Sialon matrix binder phase, but it uses 70-80% electric melting Dense corundum is used as an aggregate, and the production cost is relatively high; "A refractory castable for blast furnace iron trough and its preparation method" (public number: CN1746135A) describes a kind of iron trough castable that comprehensively utilizes high-aluminum fly ash preparation method, but the utilization rate of waste materials is low, and the performance of castables still needs to be improved

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