Environment-friendly high-cost-performance long-life type lander castable and manufacturing method thereof

Abstract

The invention discloses an environment-friendly high-cost-performance long-life type lander castable and a manufacturing method of the castable, and belonging to the technical field of chemistry. The castable is formed by mixing the following substances in parts by mass: 25-35 parts of 12-3mm recovered corundum particles, 15-25 parts of 3-1mm corundum particles, 20-36 parts of silicon carbide particle and micropowder mixture, 2-5 parts of 1-0mm resin particles, 5-10 parts of active aluminum oxide micropowder, 1-5 parts of Gangxi mud, 1-3 parts of 0.8 mum silicon micropowder, 1-3 parts of 320-mesh metallic silicon powder, 2-5 parts of cement and a proper amount of cement water reducing agent, antiknock additive and water. The manufacturing method comprises the steps of: mixing the raw materials according to the ratio, adding to a die cavity in a casting field, vibrating and compacting, rapidly maintaining and baking to obtain the product. According to the environment-friendly high-cost-performance long-life type lander castable and manufacturing method provided by the invention, the castable has the advantages that the physical injury of toxic gas to personnel is effectively reduced, the service life is prolonged, the baking time is shortened and the halt blowing-out is effectively prevented.

Description

technical field [0001] The invention relates to a special casting material for tapping trough, which belongs to the field of chemical technology, and in particular to an environment-friendly, cost-effective and long-life casting material for tapping trough and a manufacturing method thereof. Background technique [0002] With the enlargement of blast furnaces at home and abroad, the carbonaceous material used in the castable castables used in the castables of large and medium-sized blast furnaces is toxic asphalt. For example: Chinese patent CN200910092570.7 discloses a A blast furnace tapping trough castable containing aluminum ash and a preparation method thereof, the castable is made of industrial-grade corundum fine powder, SiC fine powder, high-temperature asphalt particle powder, alumina cement or calcium aluminate cement, a-Al 2 o 3 Ultrafine powder, SiO 2 Superfine powder and metal silicon powder are the main raw materials, sodium tripolyphosphate or sodium hexame...

AI Technical Summary

Problems solved by technology

[0002] With the enlargement of blast furnaces at home and abroad, the carbonaceous material used in the castable castables used in the castables of large and medium-sized blast furnaces is toxic asphalt. For example: Chinese patent CN200910092570.7 discloses a A blast furnace tapping trough castable containing aluminum ash and a preparation method thereof, the castable is made of industrial-grade corundum fine powder, SiC fine powder, high-temperature asphalt particle powder, alumina cement or calcium aluminate cement, a-Al 2 o 3 Ultrafine powder, SiO 2 Superfine powder and metal silicon powder are the main raw materials, sodium tripolyphosphate or sodium hexametaphosphate is used as the dispersant, explosion-proof organic fibers are added, aluminum ash is added, and after stirring and mixing, the castable for the blast furnace tapping trough can be obtained. High-temperature asphalt particles are used in it. Another example is Chinese patent ZL200510012224.5 which discloses a blast furnace tapping channel refractory castable and its preparation method. The castable is made of industrial grade corundum fine powder, SiC fine powder, high-temperature asphalt fine powder, oxidation Aluminum cement or calcium aluminate cement, a-Al 2 o 3 Ultrafine powder, SiO 2 Ultrafine powder and metal silicon powder are the main raw materials, sodium tripolyphosphate or sodium hexametaphosphate and metal aluminum powder are used as additives, and high-alumina fly ash is added after stirring and mixing to become the refractory castable for blast furnace tapping trench. High-temperature asphalt fine powder is also added to its raw materials, and the toxic components will form yellow smoke during baking, causing personal injury and environmental pollution

[0003] Iron trough castables will be damaged in advance in the environment of high-velocity and high-temperature molten iron impact, high-velocity slag corrosion and high thermal shock environment, etc., causing the iron trough to wear out in advance, forming iron leakage, and then causing the blast furnace to shut down Discontinued, subject to improvement

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