Method and device for preparing manganese-silicon alloy by utilizing poor ferrous manganese ore

A manganese-silicon alloy and iron ore technology, applied in the direction of improving process efficiency, can solve the problems of high energy consumption, slow heating speed, long production cycle, etc., and achieve the effect of avoiding volatilization loss

Pending Publication Date: 2017-09-22
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Submerged arc furnace heating uses electrodes to heat these raw materials to a high temperature and needs to be heated to above 1600°C, but these materials have low conductivity and heat transfer efficiency, the heating process consumes a lot of energy, the heating speed is slow, and the production cycle is long

Method used

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  • Method and device for preparing manganese-silicon alloy by utilizing poor ferrous manganese ore
  • Method and device for preparing manganese-silicon alloy by utilizing poor ferrous manganese ore

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 and figure 2 As shown, the composition of manganese iron ore in this embodiment is: iron 28%, manganese 15%. At step S101 , the manganese iron ore is dried to a moisture content of less than 1% by using the dryer 1 , and crushed by the crusher 2 to less than 2 mm. Then at step 102, the dried and crushed manganese ore is sent to the mixer 5 through the conveying device, and the silicon powder and quicklime in the silo 3 and the silo 4 are also sent into the mixer 5 through the conveying device. Feeder 5. Wherein, the ferromanganese ore, silicon powder and quicklime in the mixer 5 are mixed according to the ratio of 100:23:25 and pelletized in the pelletizer 6 to form pellets. At step S103, the prepared pellets are put into the gas melting furnace 7 for smelting, the temperature of the gas melting furnace is controlled at 1480±10° C., and the melting time is 35 minutes. After smelting, a manganese-silicon alloy with a manganese content of 62% and a s...

Embodiment 2

[0042] Such as figure 1 and figure 2 As shown, the composition of manganese iron ore in this embodiment is: 34% iron and 20% manganese. At step S101 , the manganese iron ore is dried to a moisture content of less than 1% by using the dryer 1 , and crushed by the crusher 2 to less than 2 mm. Then at step 102, the dried and crushed manganese ore is sent to the mixer 5 through the conveying device, and the silicon powder and quicklime in the silo 3 and the silo 4 are also sent into the mixer 5 through the conveying device. Feeder 5. Wherein, the ferromanganese ore, silicon powder and quicklime in the mixer 5 are mixed according to the ratio of 100:25:30 and pelletized in the pelletizer 6 to form pellets. At step S103, the prepared pellets are put into the gas melting furnace 7 for smelting, the temperature of the gas melting furnace is controlled at 1500±10° C., and the smelting time is 40 minutes. After smelting, a manganese-silicon alloy with a manganese content of 63.8% a...

Embodiment 3

[0044] Such as figure 1 and figure 2 As shown, the composition of manganese iron ore in this embodiment is: iron 32%, manganese 19%. At step S101 , the manganese iron ore is dried to a moisture content of less than 1% by using the dryer 1 , and crushed by the crusher 2 to less than 2 mm. Then at step 102, the dried and crushed manganese ore is sent to the mixer 5 through the conveying device, and the silicon powder and quicklime in the silo 3 and the silo 4 are also sent into the mixer 5 through the conveying device. Feeder 5. Wherein, the ferromanganese ore, silicon powder and quicklime in the mixer 5 are mixed according to the ratio of 100:26:33 and pelletized in the pelletizer 6 to form pellets. At step S103, the prepared pellets are put into the gas melting furnace 7 for smelting, the temperature of the gas melting furnace is controlled at 1530±10° C., and the melting time is 50 minutes. After smelting, a manganese-silicon alloy with a manganese content of 62.2% and a...

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Abstract

The invention discloses a method for preparing manganese-silicon alloy by utilizing poor ferrous manganese ore. The method includes the following steps of drying and crushing the poor ferrous manganese ore; mixing the crushed poor ferrous manganese ore, silica power and quick lime, and balling the mixed materials to form balls; and arranging the balls into a fuel gas melting separation furnace to conduct heating reaction to obtain the manganese-silicon alloy. The invention further discloses a device carrying out the above method. Through the usage of the above method and the device, the difficult problem of treatment of low-grade ferrous manganese ore is solved, and respective recycling for manganese and iron of the low-grade ferrous manganese ore is achieved.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method and a device for preparing a manganese-silicon alloy from manganese-poor iron ore. Background technique [0002] There have been long-term and in-depth researches on the smelting of manganese-silicon alloys at home and abroad, and the improvement and improvement of the process is beneficial to various economic difficulties. The improvement of technical indicators can achieve the purpose of saving energy, reducing consumption and improving product quality. In order to further upgrade the manganese-silicon alloy smelting technology to a new level, the problems of high energy consumption and unstable product quality in the current manganese-silicon alloy smelting must be further resolved. [0003] Silicon-manganese alloy is an important alloy for steelmaking, and it is used in the largest amount. It is an important alloy for improving the mechanical properties of steel. my count...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/24C22B1/00C22B5/04C22B47/00C22C22/00C21B13/00
CPCC21B13/006C22B1/00C22B1/2406C22B5/04C22B47/00C22C22/00Y02P10/20
Inventor 吴佩佩王敏王福佳王健月古明远曹志成吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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