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Method for extracting iron and manganese from solid

A solid, rhodochrosite technology, applied in the field of comprehensive utilization of resources, can solve problems such as environmental hazards and affecting the ability of nerve synapses to conduct

Active Publication Date: 2017-05-31
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, manganese has a special affinity for mitochondria and affects the conduction ability of nerve synapses. If the manganese in vanadium slag is not recovered effectively, it will also cause harm to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 40 grams of dry iron and steel plant vanadium slag powder (particle size is 48-120 microns, FeO content is 37wt.%, MnO content is 5.93wt.%) is mechanically mixed with 10 grams of sodium chloride powder and 40 grams of ammonium chloride powder, Put it in the crucible. Put the crucible in a shaft furnace with high-purity argon, raise the temperature to 800°C, and keep it warm for 4 hours. Solution, filter the mixture solution, separate the solid and liquid, obtain the filtrate containing iron and manganese, and remove the filter residue of iron and manganese. Calculate the extraction rate of iron (manganese) according to the following formula:

[0029] The extraction rate of iron=(the quality of iron in the filtrate / 40 grams of iron in the vanadium slag powder)×100, the extraction rate of manganese is also calculated with a similar formula.

Embodiment 2

[0031] Mechanically mix 40 grams of dry vanadium slag powder (particle size is 48-120 microns, FeO content is 37wt.%, MnO content is 5.93wt.%) with 15 grams of potassium chloride powder and 50 grams of ammonium chloride powder , into the crucible. Put the crucible in a shaft furnace with high-purity argon, raise the temperature to 800°C, and keep it warm for 4 hours. Solution, filter the mixture solution, separate the solid and liquid, obtain the filtrate containing iron and manganese, and remove the filter residue of iron and manganese.

Embodiment 3

[0033] 40 grams of dry iron and steel plant vanadium slag powder (particle size is 48-120 microns, FeO content is 37wt.%, MnO content is 5.93wt.%) is mechanically mixed with 20 grams of sodium chloride powder and 60 grams of ammonium chloride powder, Put it in the crucible. Place the crucible in a shaft furnace with high-purity argon, raise the temperature to 800°C, and keep it warm for 4 hours. Solution, filter the mixture solution, separate the solid and liquid, obtain the filtrate containing iron and manganese, and remove the filter residue of iron and manganese.

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Abstract

The invention relates to a method for extracting valuable metal from a solid, in particular to a method for extracting iron and manganese from steel plant vanadium residues, rhodochrosite, rhodonite and alabandite and belongs to the field of resource comprehensive utilization. The method comprises the following steps that dry iron and manganese-containing solid powder, sodium chloride and ammonium chloride powder are uniformly mixed according to a certain proportion; a mixture is put into an alumina crucible, the alumina crucible is put into a shaft furnace, and high-purity argon is introduced into the shaft furnace, enters the shaft furnace from the bottom and is discharged out of the shaft furnace from the top; the shaft furnace is heated to a certain temperature and subjected to heat preservation for a certain time; and after shaft furnace heat preservation is completed, the alumina crucible is taken out of the shaft furnace, cooled residues are transferred into a container, a solution is added into the container, a mixture solution is filtered, and solid and liquid separation is conducted to obtain iron and manganese-containing filter liquor and iron and manganese-removed filter residues. By adoption of the process, the leaching rate of manganese is 95% or above, and meanwhile, the leaching rate of iron is 55% or above.

Description

technical field [0001] The invention relates to a method for extracting iron and manganese from iron and steel plant vanadium slag, rhodochrosite, rhodoxene and pyrroxene, and belongs to the field of comprehensive utilization of resources. Background technique [0002] Manganese is a good deoxidizer and desulfurizer in the steelmaking process; in the nonferrous metallurgy industry, it is used as an oxidant in the form of manganese dioxide and potassium permanganate; in alloy production, it is used to produce aluminum-magnesium-manganese alloys. In nature, the most common oxides of manganese are: pyrolusite (MnO 2 ), manganese ore (mMnO·MnO 2 ·nH 2 O), metamanganate (MnO 2 ·nH 2 O), manganese ore (MnO 2 ·Mn(OH) 2 ) and brown manganese (Mn 2 o 3 ) etc., MnO, Mn 2 o 3 , Mn 3 o 4 and MnO 2 It is insoluble in water. Since the valence state of manganese in manganese ore is generally tetravalent, the wet leaching of manganese ore is mainly by adding reducing agent to a...

Claims

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Application Information

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IPC IPC(8): C22B47/00C21B15/00C22B7/04C22B3/04C22B3/08C22B3/10C22B1/08
CPCC21B15/00C22B1/08C22B3/04C22B3/08C22B3/10C22B7/006C22B7/007C22B7/04C22B47/00Y02P10/20
Inventor 王丽君刘仕元王旗卞刘振刘晓候朋涛谢鹏程周国治
Owner UNIV OF SCI & TECH BEIJING
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