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Alkaline granule steel ladle covering agent

A technology of ladle covering agent and alkaline particles, applied in the field of ladle covering agent, can solve the problems of secondary oxidation of molten steel, corrosion of alkaline ladle refractory material, and increase of inclusion content, etc.

Inactive Publication Date: 2004-06-02
上海宝谊保温材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the general ladle covering agent generally adopts acidic covering agent, which contains high SiO 2 Although it has good thermal insulation performance, it is easy to cause secondary oxidation of molten steel, and Al in molten steel 2 o 3 Increased inclusion content and acidic cover agent slag attack basic ladle refractory

Method used

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Embodiment Construction

[0004] Below in conjunction with embodiment the present invention is described in further detail,

[0005] Calculate the chemical composition of the covering agent as SiO 2 20kg, Al 2 o 3 5 kg, CaO 60 kg, MgO 12 kg, Fe 2 o 3 2.7 kg, 0.1 kg of MnO, and 0.2 kg of fixed carbon are mixed and stirred to form 100 kg of covering agent, granulated (10mm*5mm particles), dried, and packed after sieving. When used, the melting point of the covering agent is suitable, the three-layer melting structure is controlled, and it has good thermal insulation properties. Due to the low content of reducible oxides, it can prevent secondary oxidation of molten steel. 2 o 3 Low content, adsorption of Al in molten steel 2 o 3 The ability of inclusions is strong and the carbon content is low, which will not add carbon to the molten steel. Since the covering agent is alkaline, it will not corrode the alkaline refractory material of the ladle, which is beneficial to prolong the ladle life of th...

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Abstract

The composition of coverflux contains (wt) SiO2 10%-20%, Al2O3 1%-5%, CaO 50%-60%, MgO 5%-12%, Fe2O3 1%-3%, MnO 0.01%-0.1% and fixed carbon 0%-1%. Said coverflux possesses proper melting point and good heat-insulating property, can prevent secondary oxidation of molten steel, and can prolong ladle life.

Description

technical field [0001] The invention relates to a ladle covering agent, in particular to an alkaline particle ladle covering agent. Background technique [0002] At present, the general ladle covering agent generally adopts acidic covering agent, which contains high SiO 2 Although it has good thermal insulation performance, it is easy to cause secondary oxidation of molten steel, and Al in molten steel 2 o 3 The inclusion content increases, and the acidic covering agent slag will attack the basic ladle refractory. Contents of the invention [0003] The object of the present invention is to provide a basic Al with low fixed carbon content, low reducible oxide content, initial Al 2 o 3 An alkaline granular ladle covering agent with low content and high alkalinity. The technical scheme of the present invention is to design a kind of alkaline particle ladle covering agent, it is characterized in that: the chemical composition of covering agent is by weight percentage: SiO...

Claims

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Application Information

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IPC IPC(8): B22D11/111C21C7/076
CPCY02P10/20
Inventor 王兆达
Owner 上海宝谊保温材料有限公司
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