Smelting method of manganese alloy

A smelting method and manganese alloy technology, applied in the field of metallurgy, can solve problems such as increasing environmental pollution, consuming large fuel, reducing manganese grade, etc., achieving huge economic benefits, reducing pollution, and reducing usage

Active Publication Date: 2012-03-07
云南牧隆锰业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the roasting temperature of manganese carbonate generally reaches 1423K. Because the roasting temperature is too high, it not only consumes a lot of fuel (increasing the cost and increasing the pollution to the environment), but more importantly, the manganese oxide obtained after roasting is constantly being burned. Oxidation produces manganese trioxide, trimanganese tetraoxide and manganese dioxide, thereby greatly reducing the grade of manganese

Method used

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  • Smelting method of manganese alloy
  • Smelting method of manganese alloy
  • Smelting method of manganese alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Manganese ore with a particle size of 5 cm and coke with a particle size of 3 cm are uniformly mixed according to a weight ratio of 1:0.16 to obtain a mixed feed for smelting high-carbon ferromanganese. Wherein, the weight content of manganese carbonate in the manganese ore is 10%. The above-mentioned mixed feed is added to a three-phase resistance furnace for smelting. The primary current of the three-phase resistance furnace is 220A and the secondary voltage is 140V. Turn on the three-phase resistance furnace every four hours and pour the magma containing high-carbon ferromanganese in the three-phase resistance furnace into the ladle. Subsequently, the slag-iron separation (that is, the separation of high-carbon ferromanganese from the molten slurry) and pouring are carried out on the ladle containing high-carbon ferromanganese, and high-carbon ferromanganese finished products with qualified quality are obtained. In this embodiment, the grade of the manganese ore is ...

Embodiment 2

[0042] Manganese ore with a particle size of 15 cm and coke with a particle size of 5 cm are uniformly mixed according to a weight ratio of 1:0.22 to obtain a mixed feed for smelting high-carbon ferromanganese. Wherein, the weight content of manganese carbonate in the manganese ore is 15%. The above-mentioned mixed feed is added to a three-phase resistance furnace for smelting. The primary current of the three-phase resistance furnace is 300A and the secondary voltage is 160V. Turn on the three-phase resistance furnace every four hours and pour the magma containing high-carbon ferromanganese in the three-phase resistance furnace into the ladle. Then, the slag and iron are separated and poured into the ladle containing high-carbon ferromanganese, and high-carbon ferromanganese finished products with qualified quality are obtained. In this embodiment, the grade of the manganese ore is 31.40%, the recovery rate is 77.28%, and the production cost of high-carbon ferromanganese is ...

Embodiment 3

[0044] Manganese ore with a particle size of 10 cm and coke with a particle size of 4 cm are uniformly mixed according to a weight ratio of 1:0.19 to obtain a mixed feed for smelting high-carbon ferromanganese. Wherein, the weight content of manganese carbonate in the manganese ore is 20%. The above-mentioned mixed feed is added to a three-phase resistance furnace for smelting, the primary current of the three-phase resistance furnace is 260A, and the secondary voltage is 150V. Turn on the three-phase resistance furnace every four hours and pour the magma containing high-carbon ferromanganese in the three-phase resistance furnace into the ladle. Then, the slag and iron are separated and poured into the ladle containing high-carbon ferromanganese, and high-carbon ferromanganese finished products with qualified quality are obtained. In this embodiment, the grade of the manganese ore is 31.31%, the recovery rate is 77.31%, and the production cost of high-carbon ferromanganese is...

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Abstract

The invention discloses a smelting method of a manganese alloy. The smelting method comprises the following steps of: A) mixing manganese ores and auxiliary materials evenly according to a preset ratio to obtain a mixed feeding material, wherein the manganese ores contain manganese oxide ores and manganese carbonate ores of which the weight content is no more than 20%; B) adding the mixed feedingmaterial obtained in the step A) in an electric furnace to smelt and obtain fused slurry containing the manganese alloy; and C) separating the fused slurry obtained in the step B) to obtain the manganese alloy, and pouring to obtain the manganese alloy finished product. According to the smelting method of the manganese alloy in the embodiment of the invention, the smelting cost of the manganese alloy can be greatly reduced and the pollution to the environment can be greatly lowered.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a method for smelting manganese alloys. Background technique [0002] When using manganese ore to smelt manganese alloy, it is necessary to roast the manganese carbonate ore in the manganese ore to remove carbon dioxide before smelting in the furnace. Only after roasting can the manganese carbonate ore be put into the furnace for use. Manganese carbonate ore generates manganese oxide and carbon dioxide during the roasting process. Among them, the roasting temperature of manganese carbonate generally reaches 1423K. Because the roasting temperature is too high, it not only consumes a lot of fuel (increasing the cost and increasing the pollution to the environment), but more importantly, the manganese oxide obtained after roasting is constantly being burned. Oxidation produces manganese trioxide, trimanganese tetraoxide and manganese dioxide, thereby greatly reducing the manganese grade. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C22/00C22C35/00
Inventor 韦祖林高德云吕达海王宁冉友祥温衍顺杨忠姚杨选何兴杰胡忠奎王春林汤顺祥赵光跃杨绍萍张定刚李培元
Owner 云南牧隆锰业有限公司
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