A kind of molten iron slag collecting agent

Abstract

The invention discloses a molten iron slag collecting agent. The molten iron slag collecting agent is prepared from quick lime, perlite, straw ash, periclase, cobalt oxide, zeolite powder, sepiolite powder, chromic oxide, hollow glass bead powder, chromium carbide and modified bauxite. The molten iron slag collecting agent is low in cost, good in dispersibility and flowing property, capable of firmly adhering to slag, good in spreading performance and resistant to high temperature and has a quite good heat-resistance heat-preservation action.

Description

technical field [0001] The invention relates to the field of slag collecting agents, in particular to a molten iron slag collecting agent. Background technique [0002] Iron and steel is smelted from iron-containing ores. Iron ores are generally not pure, and contain non-metallic impurities such as sulfur and phosphorus. The main components of non-metallic impurities are silicates and oxides. During high-temperature smelting at ℃, non-metallic impurities are also melted. Because of their different properties from iron, a molten state of magma is formed. Because the specific gravity is lighter than that of iron, many small groups of impurities are dispersed and floated on the surface of high-temperature molten iron, and formed after condensation. Residue, if the residue is not removed when the molten iron is poured into the casting, it will be injected together with the molten iron to form lime sand, which will cause casting quality problems. [0003] In the past, the straw ...

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Problems solved by technology

[0003] In the past, the straw ash widely used by foundry manufacturers has the function of heat preservation and avoiding the oxidation of molten iron, and also has a certain effect of collecting slag, but it seriously pollutes the environment, and it is very troublesome to store and use. It must prevent mildew in rainy days and prevent fire in sunny days.

With the continuous development of the field of liquid casting hydraulics, the perlite raw ore is directly used as a slag collecting agent after being crushed directly. The slag covering layer, its slag collecting and covering effect is far better than straw ash, but the slag collecting layer is not strong enough, it is easy to break when removing slag, and the adhesion to molten slag is not strong enough, and the perlite raw ore will cause splashing when it bursts on the surface of molten iron , some unexpanded particles are easy to enter the cavity from the gate and cause slag inclusion defects