Treatment system and treatment method of ferrous manganese ore

A processing system and ferromanganese ore technology, which is applied in the field of energy and metallurgy, can solve problems such as high cost, long process, and serious environmental pollution, and achieve the effects of high recovery rate, high manganese content, and short process

Pending Publication Date: 2017-08-22
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Claims
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Problems solved by technology

The first is blast furnace ferromanganese smelting. This process is mature, and the manganese content in the blast furnace ferromanganese produced is greater than 65%. It is only required that the raw material into the furnace has a high manganese content and a relatively low iron content, so manganese needs to be adjusted. The ore is sintered to increase the manganese content, so the energy consumption is higher
The second is the blast furnace + submerged arc furnace method to smelt silicon-manganese alloys, that is, first obtain pig iron and manganese-rich slag through blast furnace smelting, and then use the submerged arc furnace to produce silicon-manganese alloys from the manganese-rich slag. This process has strong adaptability to resources, but long process
The third is the smelting of ferromanganese alloy by medium frequency induction furnace. This process uses metal manganese mixed with scrap steel to produce different grades of ferromanganese alloy. serious

Method used

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  • Treatment system and treatment method of ferrous manganese ore
  • Treatment system and treatment method of ferrous manganese ore
  • Treatment system and treatment method of ferrous manganese ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The ferromanganese ore used in the present embodiment has a composition of: TFe25.28%, TMn14.35%; the reducing agent used is coal powder, and the mass percentage of its fixed carbon is 82.63%, and the mass percentage of air-dry basis ash The content is 8.17%; the reduced coal used is also the coal powder; the additive used is calcium oxide.

[0063] This embodiment adopts figure 1 The system shown and image 3 The process flow shown for manganese ore is as follows:

[0064] The manganese ore and coal powder are sent into the second mixture 1 according to the mass ratio of 100:20 and mixed evenly to obtain the second mixture.

[0065] The second mixture is sent to the second molding device 2 for molding to obtain carbon-containing pellets.

[0066] The carbon-containing pellets are sent to the reduction device 3 for reduction roasting, and are reduced at 1100° C. for 20 minutes to obtain metallized pellets.

[0067] The metallized pellets are sent to the grinding dev...

Embodiment 2

[0072] The ferromanganese ore used in the present embodiment has a composition of: TFe25.28%, TMn14.35%; the reducing agent used is H 2 and CO mixed gas, in which the mixed gas (H 2 +CO) volume fraction ≥ 70%, the mass percentage of fixed carbon in the reduced coal used is 76%; the additive used is magnesium oxide.

[0073] This embodiment adopts figure 1 The system shown and figure 2 The process flow shown for manganese ore is as follows:

[0074] The manganese ore is sent to the reduction device 3, and the above-mentioned mixed gas is passed into the reduction device 3, the manganese ore is reduced and roasted, and the manganese ore is reduced at 800°C for 90 minutes to obtain metallized pellets.

[0075] The metallized pellets are sent to the grinding device 4 for grinding and magnetic separation to obtain metal iron powder with TFe91.18% and manganese slag with TFe9.06% and TMn32.71%.

[0076] The manganese slag, reduced coal, and magnesium oxide are sent to the first...

Embodiment 3

[0080] The ferromanganese ore used in the present embodiment has a composition of: TFe18.15%, TMn17.97%; the reductant used is coal powder, and the mass percentage of its fixed carbon is 79.50%, and the mass percentage of air-dry basis ash The content is 9.78%; the reduced coal used is also the coal powder; the additive used is a mixture of calcium carbonate and magnesium carbonate.

[0081] This embodiment adopts figure 1 The system shown and image 3 The process flow shown for manganese ore is as follows:

[0082] The manganese ore and coal powder are sent into the second mixture 1 according to the mass ratio of 100:19.6 and mixed evenly to obtain the second mixture.

[0083] The second mixture is sent to the second molding device 2 for molding to obtain carbon-containing pellets.

[0084] The carbon-containing pellets are sent to the reducing device 3 for reduction roasting, and are reduced at 900° C. for 60 minutes to obtain metallized pellets.

[0085] The metallized ...

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Abstract

The invention provides a processing system and processing method of ferromanganese ore. The system includes: reduction device, with raw material inlet and metallized pellet outlet; grinding device, with metallized pellet inlet, metal iron powder outlet and manganese slag outlet, metallized pellet inlet and metallization of reduction device The pelletizing outlet is connected; the first mixing device is provided with manganese slag inlet, reduced coal inlet, additive inlet and the first mixture outlet, and the manganese slag inlet is connected with the manganese slag outlet of the grinding device; the first forming device is equipped with The first mixture inlet and the first pellet outlet, the first mixture inlet is connected with the first mixture outlet of the first mixing device; the melting device is provided with the first pellet inlet and the ferromanganese alloy outlet, the first pellet The inlet is connected to the first pellet outlet of the first forming device. The invention can comprehensively recover the manganese and iron in the ferromanganese ore to obtain metal iron powder and ferromanganese.

Description

technical field [0001] The invention belongs to the field of energy and metallurgy, and in particular relates to a processing system and method of ferromanganese ore. Background technique [0002] Manganese products are widely used in steel, electronics, light industry, chemical industry, agriculture and other fields. Except for a small amount of manganese-rich ore that can be directly used in steelmaking and battery manganese powder, most of them need to be processed before they can be used. Therefore, extracting manganese from manganese ore has always been the focus of research at home and abroad. [0003] my country's manganese ore is mostly lean ore, mainly in the form of manganese carbonate and manganese oxide, and manganese oxide ore is symbiotic with manganese oxide and iron oxide, which is mainly used to produce manganese-rich slag and pig iron. At present, there are three main ways to produce manganese alloys. The first is blast furnace ferromanganese smelting. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B1/24C22B47/00C21B13/00
CPCC22B1/02C21B13/006C22B1/2406C22B47/00
Inventor 王敏古明远王健月吴佩佩王福佳曹志成吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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