Magnesium injection agent for ferrous metal

a technology of ferrous metal and injection agent, which is applied in the direction of furnace details, crucible furnaces, furnaces, etc., can solve the problems of certain grades of alloys that are not wanted, and achieve the effects of improving metal recovery, reducing magnesium loss, and improving alloying of magnesium metal

Inactive Publication Date: 2001-11-15
MAGNESIUM TECH CORP
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Benefits of technology

0021] In still another object of the present invention is to improve the alloying of magnesium metal in molten ferrous material.
0022] It is still yet another object of the present invention to reduce the loss of magnesium by vaporization or oxida...

Problems solved by technology

Materials commonly used as a carrier for metallic magnesium in other applications, such as hot metal desulfirization, which incl...

Method used

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  • Magnesium injection agent for ferrous metal
  • Magnesium injection agent for ferrous metal

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Embodiment Construction

[0027] Referring now to the drawings where the showings are for the purpose of illustrating a preferred embodiment only and not for the purposes of limiting the same, FIG. 1 illustrates one preferred arrangement for injecting magnesium into a molten bath of ferro-silicon. As shown in FIG. 1 injection assembly 10 includes an injector 20 which is supported by an injector frame 22 and includes an injector port 24 for dispensing particles within injector 20 into an injection pipe 30. The particles in injector 20 are a mixture of magnesium particles and particles of a high melting temperature alloy such as ferro-silicon or magnesium-ferro-silicon. The particle size of the magnesium particles and the particles of high melting temperature alloy are substantially the same with an average particle size of less than about 1.5 mm, and preferably between about 0.18 and 1.5 mm. The ratio of magnesium particles to the high melting temperature particles in injector 20 ranges from about 5:95 to abo...

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Abstract

A treatment agent and method to introduce magnesium into ferrous material. The treatment agent includes a mixture of high melting temperature particles and magnesium particles. The content of high melting temperature particles in the particle mixture is present in an effective amount to inhibit the complete conversion of the magnesium particles into molten magnesium prior to the magnesium particles entering the ferrous material. The method describes the efficient treatment of molten ferrous material with these particles.

Description

[0001] The present invention relates to a composition of an agent and a method for the treatment of molten ferrous metal, and more particularly to a magnesium-containing agent and method for the treatment of molten ferrous metal.[0002] Cast iron is primarily an iron alloy that contains carbon and silicon. Wide variations of the properties of cast iron material can be achieved by varying the amount of carbon and silicon, and by adding various metallic alloys to the cast iron. Commercial cast irons include gray, ductile, malleable, compacted graphite and white cast iron, among others. With the exception of white cast iron, the cast iron steels have a common micro-structure that consists of a graphite phase and a matrix that may be ferritic, pearlitic, bainitic, tempered martensitic, or combinations thereof. Gray iron has flake shaped graphite, ductile iron has nodular or spherically shaped graphite, compacted graphite iron (also called vermicular graphite iron) is intermediate between...

Claims

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Application Information

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IPC IPC(8): B22D1/00B22D27/20C21C1/10C21C7/00C21C7/072C22C33/12C22C37/00C22C37/10C22C38/00C22C38/02
CPCC21C1/105C21C7/0037Y02P10/20
Inventor BIENIOSEK, THOMAS H.FAHEY, JEROME P.
Owner MAGNESIUM TECH CORP
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