Low-cost ramming material for RH and preparation method thereof

Abstract

The invention discloses a low-cost ramming material for RH and a preparation method thereof and belongs to the technical field of smelting refractory materials. The low-cost ramming material for RH comprises, by mass, 20-25% of a used waste refractory material with particle sizes of greater than 3mm and less than or equal to 5mm, 20-25% of a used waste refractory material with particle sizes of greater than 1mm and less than or equal to 3mm, 25-30% of a used waste refractory material with particle sizes of less than or equal to 1mm, 20-25% of magnesia, 2-5% of a binding agent and 0.1-0.5% of additives. After the ramming material is used, refractory material resources are reasonably applied, and environmental pollution caused by solid waste emission is reduced. The ramming material for RH has the characteristics of low cost, stable high-temperature performances and no new pollution.

Description

technical field

[0001] The invention belongs to the technical field of smelting refractory materials, and in particular relates to a low-cost RH ramming material and a preparation method thereof. Background technique

[0002] Refractories are an important part of the production of iron and steel enterprises, and the treatment of used refractories has always been one of the problems faced by the industry. In order to reduce the discharge of waste, the reuse of used refractory materials has become a research topic. Refractory materials such as ladle breathable bricks (seat bricks) and RH castables are all high-quality corundum materials. Through appropriate treatment processes, they can replace new materials and be used in environments with harsh conditions to maximize their value.

[0003] The RH vacuum circulating molten steel refining process is a necessary process for smelting high-grade steel grades. The construction of the vacuum chamber insertion tube requires a refrac...

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