CN103319186A - Aluminum melting furnace cast refractory material and preparation method thereof - Google Patents

Abstract

An aluminum melting furnace cast refractory material is prepared through using the following raw materials, by weight, 50-60 parts of bauxite, 30-35 parts of 1-50mum brown fused alumina, 15-20 parts of a silicon-based floating bead, 10-15 parts of alumina, 20-25 parts of white mud, 20-25 parts of quartz sand, 10-15 parts of mullite, 10-15 parts of 30-80mum silicon carbide, 5-10 parts of sodium tripolyphosphate, 15-20 parts of andalusite, 1-2 parts of zirconia, 2-3 parts of titanium oxide, 15-20 parts of potash feldspar and 10-15 parts of vermiculite. In the invention, bauxite is used as a primary material, the particle sizes of the raw materials are preset, and parts of the raw materials are molten, and then are cooled and crushed, so the combination force among the raw materials is enhanced, the thermo stability of the refractory cast material is improved, the thermal shock resistance stability of the cast material is good, a reaction of the cast material and the aluminum element is difficult, the penetration of molten aluminum is effectively prevented, and the service life of a furnace is prolonged. The aluminum melting furnace can be used for 2-3 years, and the washing of the inner wall of the furnace is less.

Description

Molten aluminium stove pouring fireproof material and preparation method thereof

Technical field

The present invention relates to a kind of aluminum smelting technology technology, specifically build employed mould material in the molten aluminium stove process, it can obviously improve the work-ing life of molten aluminium stove.

Background technology

At present, employed mould material in building molten aluminium stove process exists the anti-thermal shock poor stability, easily be washed, corrode, be prone to breakage after use for some time, aluminising occurs, need to repair, and the furnace wall is easy and aluminium element generation chemical reaction, reduce the quality of product.

Summary of the invention

The purpose of this invention is to provide a kind of molten aluminium stove pouring fireproof material and preparation method thereof, improved the thermostability of refractory casting material, mould material is not prone to burn into breakage, long service life.

Technical scheme of the present invention is as follows:

A kind of molten aluminium stove pouring fireproof material is characterized in that being made by the raw material of following weight part: aluminium vanadine 50-60,1-50 μ m palm fibre corundum 30-35, siliceous pearl 15-20, aluminum oxide 10-15, white clay 20-25, quartz sand 20-25, mullite 10-15,30-80 μ m silicon carbide 10-15, tripoly phosphate sodium STPP 5-10, andaluzite 15-20, zirconium white 1-2, titanium oxide 2-3, potassium felspar sand 15-20, the vermiculite 10-15 of floating.

The preparation method of described molten aluminium stove pouring fireproof material is characterized in that may further comprise the steps:

(1), aluminium vanadine, andaluzite, potassium felspar sand, vermiculite are heated to 2000-2500 ℃ of high temperature melt, stir after 30-40 minute, pour Quench in the cold water, be ground into again the fine powder of 1-30 μ m;

(2), quartz sand, mullite, aluminum oxide, white clay are heated to 1800-2000 ℃ of high temperature melt, stir after 30-40 minute, pour Quench in the cold water, be ground into again the fine powder of 80-120 μ m;

(3), fine powder that step (1), (2) are obtained is with after other leftover materials mix, temper and get final product.

Advantage of the present invention: take the aluminium vanadine as major ingredient, the setting of the particle diameter by raw material, after the part material melting, cooling crush has strengthened the bonding force between the raw material again, has improved the thermostability of refractory casting material, the anti-thermal shock good stability of this mould material, be not easy to react with aluminium element, can effectively stop the infiltration of molten aluminium, prolong the work-ing life of stove.Molten aluminium stove can use 2-3, and the stove inwall washes away few.

Embodiment

A kind of molten aluminium stove pouring fireproof material is made by the raw material of following weight part (kilogram): aluminium vanadine 50,1-50 μ m palm fibre corundum 30, siliceous pearl 20, aluminum oxide 15, white clay 20, quartz sand 25, mullite 10,30-80 μ m silicon carbide 10, tripoly phosphate sodium STPP 10, andaluzite 20, zirconium white 2, titanium oxide 2, potassium felspar sand 20, the vermiculite 15 of floating.

The preparation method of molten aluminium stove pouring fireproof material may further comprise the steps:

(1), aluminium vanadine, andaluzite, potassium felspar sand, vermiculite are heated to 2000-2500 ℃ of high temperature melt, stir after 30-40 minute, pour Quench in the cold water, be ground into again the fine powder of 1-30 μ m;

(2), quartz sand, mullite, aluminum oxide, white clay are heated to 1800-2000 ℃ of high temperature melt, stir after 30-40 minute, pour Quench in the cold water, be ground into again the fine powder of 80-120 μ m;

(3), fine powder that step (1), (2) are obtained is with after other leftover materials mix, temper and get final product.

Behind the casting, then room temperature maintenance 18-36 hour is incubated 12-24 hour under 180 ℃ of-250 ℃ of conditions.Use 3 years without damaging, still using.

Claims (2)

1. a molten aluminium stove pouring fireproof material is characterized in that being made by the raw material of following weight part: aluminium vanadine 50-60,1-50 μ m palm fibre corundum 30-35, siliceous pearl 15-20, aluminum oxide 10-15, white clay 20-25, quartz sand 20-25, mullite 10-15,30-80 μ m silicon carbide 10-15, tripoly phosphate sodium STPP 5-10, andaluzite 15-20, zirconium white 1-2, titanium oxide 2-3, potassium felspar sand 15-20, the vermiculite 10-15 of floating.

2. the preparation method of molten aluminium stove pouring fireproof material according to claim 1 is characterized in that may further comprise the steps:

(1), aluminium vanadine, andaluzite, potassium felspar sand, vermiculite are heated to 2000-2500 ℃ of high temperature melt, stir after 30-40 minute, pour Quench in the cold water, be ground into again the fine powder of 1-30 μ m;

(2), quartz sand, mullite, aluminum oxide, white clay are heated to 1800-2000 ℃ of high temperature melt, stir after 30-40 minute, pour Quench in the cold water, be ground into again the fine powder of 80-120 μ m;

(3), fine powder that step (1), (2) are obtained is with after other leftover materials mix, temper and get final product.