Direct iron, carbon and manganese alloying method taking ore as raw material

Abstract

A direct iron, carbon and manganese alloying method taking ore as a raw material belongs to the casting field and comprises the steps of uniformly mixing iron-manganese ore, solid carbon, iron ore, a binder and calcium carbonate, preparing the mixture into balls / blocks, drying the balls / blocks, and adding the dried balls / blocks into a special induction furnace. The balls / blocks comprise the following ingredients: 25-65 percent of iron-manganese ore, 25-60 percent of iron ore, 5-45 percent of solid carbon, 0.5-15 percent of the binder and 0.5-35 percent of calcium carbonate. After melting of furnace charge, alloy and furnace slag are discharged in a liquid manner. The power supply of the induction furnace is a mid-frequency or high-frequency induction power supply, and a crucible is made of a heat-proof metal or graphite. A water cooling coil is placed outside the crucible, and the total height of the water cooling coil is smaller than the height of the crucible. A dust collector is arranged above the crucible, an automatic feeder is mounted between the crucible and the dust collector and used for adding the balls / blocks, and the balls / blocks can be either independently added or added together with the metal furnace charge into the crucible. According to the direct iron, carbon and manganese alloying method, ore can be directly used, the special induction furnace is adopted, and an iron, carbon and manganese alloy is produced by one-time heating and directly used for casting while the use of ferromanganese or manganese metal and repeated heating are not needed, so that the production process is short, the raw materials are wide in source and the production cost is low.

Description

technical field [0001] The invention belongs to the field of casting, and relates to a direct alloying method of iron, carbon and manganese using ore as raw material. technical background [0002] With the increasing degree of industrialization, iron-carbon-manganese alloys (high manganese steel and medium and high manganese cast iron) have been widely used in various casting products. The typical production method of iron-carbon-manganese alloy is as follows: first, use high-quality manganese ore as the main raw material to produce ferromanganese (Mn content>60%) with electric furnace (or blast furnace) or produce metal manganese by electrolysis, and then combine ferromanganese or metal manganese with Scrap mixed and remelted to produce iron-carbon-manganese alloys containing Mn7-35%. The characteristics of this production method are: high-quality manganese ore and scrap steel are used as the main raw materials; electric furnace (or blast furnace) and intermediate frequ...

AI Technical Summary

Problems solved by technology

The characteristics of this production method are: high-quality manganese ore and scrap steel are used as the main raw materials; electric furnace (or blast furnace) and intermediate frequency furnace are used for secondary heating successively; the production process is relatively long and the cost of furnace materials is relatively high

At the same time, a large number of cheap iron-manganese ores at home and abroad cannot be utilized because of their high iron content

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