Manganese silicon alloy

  • Silicon manganese alloy is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements, is a widely used, large production of iron alloy. Guimeng alloys is a complex deoxidizer for steelmaking commonly used, and is producing medium and low carbon ferromanganese smelting agent and electro silicothermic process production of manganese metal. Guimeng alloys can take continuous smelting operation in large, medium and small ore heat furnace. In steel production only by manganese or silicon deoxidation, loss rates were 46% and 37%, and the use of silicon manganese alloy burning loss rate is 29%. Therefore, the production of iron and steel in order to reduce the production cost, in recent years by silicon manganese alloy instead of pure silicon, manganese, silicon manganese alloy, so in recent years the growth rate higher than that of steel production speed, usually silicon manganese alloy steelmaking using known as commodity Si Mn alloy, the use of low carbon Si Mn alloy smelting silicomanganese alloy called for their own use, the use of manganese metal called silicon manganese alloy, carbon in silicon manganese alloy below 1.9% or used for semi-finished products of producing medium and low carbon ferromanganese and electrical silicon hot metal manganese. And silicon manganese alloy demand at the rate of 15% per year increase, in the iron and steel industry production gradually take the place of ferrosilicon, widely used.
    The production of silicon manganese alloy raw materials are manganese, manganese rich slag, silica, dolomite (or coke, limestone, fluorite). Production of manganese silicon alloy can use a manganese or manganese (including several manganese rich slag) mixed ore. Because the silicon manganese alloy iron and phosphorus requirements than high carbon ferromanganese is low, so the requirement of smelting manganese silicon manganese ore is higher than phosphorus and manganese than ferromanganese. The use of manganese ore containing manganese is higher, the better the indicators.
    The main raw material of silicon manganese alloy production unit of the project of a manganese (340000t/a), manganese rich slag (112000t/a), intends to import high grade manganese ore from Gabon, Brazil, Garner, South Africa, rich manganese slag is supplied by the five southwestern provinces Guizhou, Sichuan, Guangxi, Yunnan, Hunan area, the main raw material silica source security. Auxiliary materials such as silica, coke supply by region and Inner Mongolia surrounding areas.
  • Ferroalloy
    Iron alloys in one or more of the metal or nonmetal elements and iron composition. Iron alloy is an important raw material for steelmaking and steel, mechanical performance can be improved physicochemical properties and casting steel, machinery, defense, precision manufacturing, household appliances and other industries on the material requirements more and more high, the iron alloy are increasingly high requirements.
    Iron alloy is mainly used as in the process of steel-making deoxidizing agent, alloy agent and reducing agent.
    1, Deoxidizer
    When you need to add some steelmaking and oxygen combining power is relatively strong, and the oxide and can smoothly discharge from steel and metal material liquid, so that the oxygen content in steel and metal materials in liquid reduction.
    Commonly used with ferrosilicon, ferromanganese deoxidation agent, aluminum and iron, calcium silicate (iron), manganese (iron), silicon barium (iron), silicon aluminum (iron) etc..
    2, alloy agent
    The addition of various carbon steel, iron alloy in adjusting its chemical composition, can produce a variety of alloy steel and new metal materials.
    Alloy agent commonly used are: ferrosilicon, ferrochrome, ferromanganese, ferrotungsten, ferromolybdenum, titanium, niobium, vanadium iron iron, nickel iron.
    3, reducing agent
    In metal magnesium smelting process of ferrosilicon is used as the reducing agent.
    In addition, iron alloy other varieties also need in ferroalloy production in their reduction or adjust the ingredients, such as ferrosilicon can be used as reducing agent in high carbon ferrochromium, ferromanganese ferromolybdenum; is the main raw material for smelting silicon chromium alloys, and silicon chromium alloy is the main raw material of low chromium iron.
    Iron alloy in other areas such as in the welding industry, manganese powder, tungsten powder, molybdenum powder is the main raw material of special electrode.
  • Silicon manganese alloy product specification and quality indicators for the implementation of national standards (GB/T4008-1996), the specific quality indicators table "national silicomanganese standard (GB/T4008-1996)".
    The national standard (GB/T4008-1996) of silicon manganese alloy

    Grade

    Chemical composition(%)

    Mn

    Si

    C

    P

    S

    FeMn64Si27

    60.0-67.0

    25.0-28.0

    0.5

    0.10

    0.15

    0.25

    0.04

    FeMn67Si23

    63.0-70.0

    22.0-25.0

    0.7

    0.10

    0.15

    0.25

    0.04

    FeMn68Si22

    65.0-72.0

    20.0-23.0

    1.2

    0.10

    0.15

    0.25

    0.04

    FeMn64Si23

    60.0-67.0

    20.0-25.0

    1.2

    0.10

    0.15

    0.25

    0.04

    FeMn68Si18

    65.0-72.0

    17.0-20.0

    1.8

    0.10

    0.15

    0.25

    0.04

    FeMn64Si18

    60.0-67.0

    17.0-20.0

    1.8

    0.10

    0.15

    0.25

    0.04

    FeMn68Si16

    65.0-72.0

    14.0-17.0

    2.5

    0.10

    0.15

    0.25

    0.04

    FeMn64Si16

    60.0-67.0

    14.0-17.0

    2.5

    0.20

    0.25

    0.25

    0.05

    Note: the buyer has special requirements on chemical composition, the supply and demand sides can negotiate



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