Aluminosilicate efficient iron liquid slag removing heat preservation covering agent

Abstract

The invention discloses an aluminosilicate efficient iron liquid slag removing heat preservation covering agent and relates to the technical field of steel liquid and iron liquid slag removing heat preservation covering agents in the metallurgy and casting production process. The chemical components comprise, by weight, 71%-75% of SiO2, 11%-14% of Al2O3, 4%-5% of Na2O, 3%-4% of K2O, 0.5%-1.5% of CaO, 1.0% or less of FeO, 1% or less of Fe2O3, 1% or less of microscale other oxides comprising MgO, P2O5, TiO2, MnO and the like, and 4%-7% of ignition loss, and the sum of the weight percentages of all the chemical components is 100%. By adopting the specified heat treatment process, the mass ignition loss of treated volcanic rock can be controlled to be within 2%-4%, the optimal expanding effect is obtained, capacity of adhering floating slag is strengthened greatly, and the efficient slag removing effect is achieved.

Description

technical field [0001] The invention relates to an aluminosilicate high-efficiency molten iron slag removal and heat preservation covering agent, which belongs to the technical field of slag removal and heat preservation covering agents. Background technique [0002] When the metal charge is smelted into molten metal, a large amount of slag will be produced. The main sources of slag are: charge debris; oxidation of various elements during the smelting process, especially iron, silicon and manganese; and corrosion products of the furnace lining and lining. The slag is liquid or solid with low viscosity and is not easy to gather. It must be removed during smelting, spheroidizing, pouring, etc. to avoid slag inclusion defects in castings. [0003] At present, the volcanic rock slag remover most accepted by the foundry industry is Ishikawa brand pumice imported from Japan, which is originally produced in natural volcanic rock mines in Ishikawa County, Japan, and is made by benef...

AI Technical Summary

Problems solved by technology

Imported Japanese Ishikawa brand slag remover has been widely used by medium and high-end foundry manufacturers, especially in the production of automobiles, wind power, nuclear power, and aviation castings. It has become an indispensable production auxiliary material for molten iron slag removal and purification. Now The domestically produced slag remover has low expansion rate, poor expansion performance on the metal liquid surface, and poor slag accumulation performance, long slag removal time, large consumption per ton of molten iron, exceeding 5-10 kg / ton of molten iron

inefficient use

It is far from meeting the needs of foundry manufacturers