Smelting method of calcium-silicon alloy

Abstract

The invention belongs to the technical field of metallurgy, in particular relates to a smelting method of calcium-silicon alloy, comprising the steps of putting the raw materials of ferrosilicon, metallic calcium and crushed aggregates of metallic silicon into an intermediate frequency furnace, and smelting under the temperature of 1250 to 1350 DEG C to obtain the calcium-silicon alloy. Compared with the traditional method, in the invention, the different raw materials and devices are used, thus the carbon dioxide discharge is extremely low during the smelting process, the power consumption is far lower than that of other smelting methods, but the quality is higher. As a result, the smelting method of calcium-silicon alloy achieves the effects of energy conservation and emission reduction, and enhances the product quality of the calcium-silicon alloy.

Description

technical field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for smelting a silicon-calcium alloy. Background technique

[0002] Silicon-calcium alloy is a composite alloy composed of elements silicon, calcium and iron. It is an ideal composite deoxidizer and desulfurizer. It is widely used in the production of high-quality steel, low-carbon steel, stainless steel and other special alloys such as nickel-based alloys and titanium-based alloys; it is also suitable as a warming agent for converter steelmaking workshops; it can also be used as an inoculant for cast iron and additives in the production of ductile iron.

[0003] At present, most of the production of silicon-calcium metals is based on submerged arc furnaces as reduction equipment. Calcium-based materials, silicon dioxide materials, and carbon-based materials are produced by high-temperature reduction smelting processes and mixed smelting processes at 1800...