Fluorine-free high-efficiency compound slagging charging material and production method thereof

Abstract

The invention discloses a fluorine-free high-efficiency compound slagging charging material. The charging material is formed by crushing and mixing ferric oxide, aluminum oxide and silicon dioxide serving as main raw materials; adding calcium oxide and water for stirring and briquetting; and curing and roasting to obtain a finished product. The charging material performs slagging instead of an iron sheet or fluorite, has stable operation, reduces the phenomena of sputtering, gun adhesion and returning, shortens smelting time, reduces steel material consumption and protects environment, simultaneously can reduce the furnace lining loss of a converter, improve furnace age, eliminate the pollution of the fluorine in converter circulating water, prolong the service life of molten steel warehouse slag line part, slag and cool quickly, and improve steel quality, and simultaneously contributes to improving metal yield, realizes advanced dephosphorization, improves dephosphorization rate and reduces production cost.

Description

Technical field [0001] The invention belongs to a slagging and slagging charge for steelmaking and smelting. Specifically, it is a fluorine-free high-efficiency composite slagging and slagging charge and its production method, which effectively protects the environment. Background technique [0002] Cleaner production is the direction of the sustainable development of the iron and steel industry in the 21st century. There is unnecessary waste of resources and serious environmental pollution. Due to the diversity of steelmaking charge and the high production cost of steel enterprises, it is a practical production problem that needs to be solved urgently. For example, the smelting of steelmaking usually uses a variety of single charge such as fluorite, so that it has a rapid slagging reaction and is widely used. However, in practical applications, on the one hand, because the raw material of fluorite contains fluorine, the fluorine-containing recycled waste water is discharged dur...

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Problems solved by technology

However, in practical application, on the one hand, since the fluorite raw material itself contains fluorine components, during the smelting process, the circulating waste water containing fluorine will be discharged, polluting the environment; Corrosion will reduce the service life of the furnace lining; on the other hand, the cost per ton of fluorite raw materials is relatively high at 1,000 yuan per ton, because smelting needs to consume a large amount of fluorite raw materials, which will increase the production cost accordingly