CN102828099A

CN102828099A - Silicon manganese barium vanadium ferrum composite alloy used for smelting steel, and preparation method thereof

Info

Publication number: CN102828099A
Application number: CN2011101567082A
Authority: CN
Inventors: 谢应旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-13
Filing date: 2011-06-13
Publication date: 2012-12-19

Abstract

The invention provides a silicon manganese barium vanadium ferrum composite alloy used for micro-alloying of smelting steel. The composite alloy is prepared by a carbothermal method. The composite alloy is prepared by employing silica, mixed manganese mine, barite, vanadium slag and the like as raw materials, carbon as a reducing agent, and reducing in a reducing furnace. The composite alloy comprises the following components of, by mass, of 5-75% of silicone, 1-75% of manganese, 1-25% of barium, 0.5-30% of vanadium, and the balance being ferrum and inevitable impurities. The composite alloy can be used for smelting micro-alloyed steel, can make alloying of silicon, manganese and vanadium in the steel finished once, reduces impurities brought in by adding a plurality of alloys, increases utilization rate of alloy elements, and reduces smelting steel cost on the basis of improving the quality of the steel.

Description

The silicomanganese barium vanadium iron composite alloy and the preparation method that are used to make steel

Technical field

The present invention is used to make steel the silicomanganese barium vanadium iron composite alloy of microalloying, belongs to metallurgical technology field.

Background technology

Silicon and manganese steel alloy is indispensable deoxidizer and alloying agent, and to the production of micro-alloy steel, but also in the steel niobium, titanium, vanadium and other elements to improve the strength of steel, enhanced ductility and toughness.During alloyings such as the silicon of steel, manganese, vanadium, all be when steel-making, in molten steel, add ferrosilicon and ferromanganese or silicomanganese, vanadium iron etc., unavoidably bring impurity into, the impurity that the kind of adding is more, Shuo Liang more is brought into greatly is just many more, influences the quality of steel.Existing patented technology " vanadium-silicon-barium-ferrum composite alloy " (ZL200510093226.1) lacks manganese, also needs in steel, to add ferromanganese.The vanadium deoxidizing capacity that data " discussion of manganese silicon vanadium alloy smelting process " was introduced in the manganese silicon vanadium alloy in (1997.04 phases of ferroalloy) is better than silicomanganese, and the precious resources of the oxidized waste vanadium of 60-70% (mass percent, as follows) is arranged in molten steel.The vanadium iron standard contains vanadium all between 40-75% in the GB in addition, and production cost is high, influences the use of vanadium in steel-making.Make a kind of composite alloy and substitute several kinds of alloying constituents, reduce and in steel, bring impurity into, what is more important reduces the oxidation of vanadium, increase operation rate, and be the problem that the present invention will solve.

Summary of the invention

The objective of the invention is to produce a kind of composite alloy agent--silicomanganese barium vanadium iron composite alloy, the alloying with doing steel-making realizes the composition requirement of silicon, manganese, v element simultaneously.Reduce impurity and bring in the steel, the utilization ratio of raising when guaranteeing to improve steel quality, reduces steel-making cost, creates better economic benefit and social benefit.

Silicomanganese barium vanadium iron composite alloy of the present invention is to produce with carbothermy; Being raw material with silica, mixing manganese ore, heavy crystalline substance or arsenic bloom, vanadium oxide or vanadium slag etc. promptly, is reductive agent with carbon, makes slag former with Wingdale or lime etc.; Press proportioning raw materials with hot stove in ore deposit or electric arc furnace, reduction makes.In silicomanganese barium ferrum composite alloy, contain: the barium of the silicon of 5-75%, the manganese of 1-75%, 1-25%, the vanadium of 0.5-30%, surplus are iron and unavoidable impurities.The content of each element is that root a tree name steel grade and manufacturing technique requirent are confirmed in the alloy.As: manganese steel manganese is just high, and silicon steel silicon is just high.For another example: the C3 hot rolled ribbed steel bar does not require in the steel to contain vanadium, but in order to improve its mechanics standard, contains vanadium 0.5% in the alloy and get final product.Vanadium is effective deoxidant element, if protect just with steel in oxidation, the reduction utilization ratio.Barium and silicon alloys is a strong deoxidizing agent combination, oxygen capacity in the vanadium, thereby protecting the role of vanadium in the steel.Barium still is strong dephosphorization and desulfurization element, can reduce phosphorus sulfur content in the alloy.Iron in the alloy increases alloy proportion, prolongs alloy time in molten steel, effectively brings into play the alloy benefit.

The also available remelting process production of silicomanganese barium vanadium iron composite alloy is about to the required raw material of alloy, and melting makes in smelting furnace, and this method production cost is high.But can in alloy, add effective elements such as aluminium, magnesium, calcium, titanium.

Below through specific embodiment explanation the present invention

Embodiment 1.

Ratio of components: mix 2 kilograms of 20 kilograms in 100 kilograms of manganese ores, 20 kilograms in silica, vanadium slag 50 kilograms (containing vanadium oxide 15%), tiff (strengthening flowability and dephosphorization, the sulphur of alloy), steel cuttings, coke is 40 kilograms of reductive agents, and lime is 20 kilograms of slag formers.All furnace charges are mixed, drop into simultaneously in the stove, smelted the scarfing cinder of coming out of the stove about 2 hours.Chemically examine alloying constituent: Si16%, Mn60%, V3%, also have Ba5%, C2%, P0.05%, S0.03% in the impurity, Fe12%, other impurity are not done chemical examination.

Embodiment 2.

Ratio of components: mix 80 kilograms of manganese ores, 100 kilograms in silica, 30 kilograms of Vanadium Pentoxide in FLAKESs, 3 kilograms in Wingdale, 1 kilogram of steel cuttings, 60 kilograms in coke, 5 kilograms of rhombspars.To mix manganese ore, silica, Wingdale, coke etc. earlier and in the hot stove in ore deposit, smelt about 2 hours, raw material has been reduced to manganese-silicon liquid in the stove, in stove, drops into Vanadium Pentoxide in FLAKES again, refines about 1 hour again, the scarfing cinder of coming out of the stove.Chemical examination alloying constituent: Si50%, Mn20%, V5% also have Ca2.8%, C1.5%, and surplus is Fe and impurity.

Embodiment 3

Certain steel mill produces the C4 hot rolled ribbed steel bar, and with the silicomanganese ferro-vanadium among the embodiment 1, the ton steel adds 26 kilograms.Si0.8% in the steel, Mn1.62%, V0.06%.Other mechanical properties reach GB GB1499.2-2007 requirement.On average about 90%, the ton steel has reduced about 36 yuan of production costs to the alloy utilization ratio.

Claims

1. be used to the silicomanganese barium vanadium iron composite alloy and the preparation method that make steel; Its technical characterictic is: containing mass percent in the silicomanganese barium vanadium iron composite alloy is: the barium of the silicon of 5-75%, the manganese of 1-75%, 1-25, the vanadium of 1-30%, surplus are iron and unavoidable impurities.