Harmless treatment method of electrolytic manganese chromium slag

A technology of electrolytic manganese-chromium slag and harmless treatment, which is applied in the field of metallurgy, can solve the problems of electrolytic manganese-chromium slag accumulation and other problems, and achieve the effects of large processing capacity, reduced hazard impact, and easy transportation and storage

Active Publication Date: 2017-08-29
DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method for harmless treatment of electrolytic manganese-chromium slag, to perform harmless treatment of electrolytic manganese-chromium slag, to solve the problem of accumulation of electrolytic manganese-chromium slag, to eliminate the impact of electrolytic manganese-chromium slag on the environment, The produced sintered ore is more stable, easy to store, and can bring certain economic benefits

Method used

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  • Harmless treatment method of electrolytic manganese chromium slag

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Effect test

Embodiment 1

[0026] The method for harmless treatment of electrolytic manganese chromium slag comprises the following steps:

[0027] (1) Pretreatment: crush manganese oxide ore, electrolytic manganese chromium slag and anthracite coal powder to a particle size of 5mm, then add electrolytic manganese chromium slag: manganese oxide ore at a weight ratio of 1: 6, and add electrolytic manganese The total mass of chromium slag, manganese oxide ore and returned ore is 30% of the returned ore, and anthracite powder accounting for 14% of the total mass of electrolytic manganese-chromium slag and manganese oxide ore is added, and the mixture is obtained by shoveling and mixing for 4 times by stacking cone method , then add water so that the moisture content of the mixture is 7%, set aside;

[0028] (2) Ignition and cloth: first put oiled paper and wood into the bottom of the sintering furnace, then ignite and burn the wood until it is charcoal-like, break it and spread it on the bottom of the sint...

Embodiment 2

[0032] The method for harmless treatment of electrolytic manganese chromium slag comprises the following steps:

[0033] (1) Pretreatment: crush manganese oxide ore, electrolytic manganese chromium slag and anthracite coal powder to a particle size of 4mm, then add electrolytic manganese chromium slag: manganese oxide ore at a weight ratio of 1:9, and add electrolytic manganese The total mass of chromium slag, manganese oxide ore and returned ore is 25% of the returned ore, and then anthracite coal powder accounting for 15% of the total mass of electrolytic manganese-chromium slag, manganese oxide ore and returned ore is added, and the ore is mixed 5 times by stacking cone method Obtain the mixture, then add water so that the water content of the mixture is 9%, for subsequent use;

[0034] (2) Ignition and cloth: first put the oiled plastic bag and wood into the bottom of the sintering furnace, then ignite and burn the wood until it is charcoal-like, break it and spread it on ...

Embodiment 3

[0038] The method for harmless treatment of electrolytic manganese chromium slag comprises the following steps:

[0039] (1) Pretreatment: crush manganese oxide ore, electrolytic manganese-chromium slag and anthracite coal powder to a particle size of 3 mm, then add electrolytic manganese-chromium slag: manganese oxide ore at a weight ratio of 1: 13, do not add back ore, and then After adding anthracite powder accounting for 14% of the total mass of electrolytic manganese-chromium slag, manganese oxide ore and returned ore, use the stacking cone method to shovel and mix 5 times to obtain a mixture, then add water to make the water content of the mixture 8%, and set aside;

[0040] (2) Ignition and cloth: first put the oiled hay and wood into the bottom of the sintering furnace, then ignite the wood until it is charcoal-like, break it and spread it on the bottom of the sintering furnace, with a height of 5.5cm, and then spread it on a layer Wood chaff with a thickness of 4.5cm, a...

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Abstract

The invention discloses an innocent treatment method of electrolytic manganese and chromium residues. The innocent treatment method comprises the following steps of (1) pretreating; (2) igniting and arranging materials: firstly, putting igniting materials and wood at the bottom of a sintering furnace, then igniting the wood to burn into charcoal, so as to smash and lay with the height of 5 to 6 cm at the bottom of the sintering furnace, then laying a layer of sawdust with the thickness of 4 to 5 cm, subsequently, adding two shovelfuls of standby mixtures, and laying with the thickness of 3 to 4 cm; (3) sintering; (4) screening and returning to mines: screening finished products of sinters, returning the finished products of sinters of which the granularity is less than 5 mm to the mines as raw materials in the step of pretreatment, and storing the finished products of sinters of which the granularity is greater than or equal to 5 mm. The innocent treatment method has the advantages that innocent treatment can be performed on the electrolytic manganese and chromium residues, the problem of stacking of the electrolytic manganese and chromium residues is solved, the influence of the electrolytic manganese and chromium residues on the environment is eliminated, the obtained products have stronger stability and are easy to store, and certain economic benefits can be brought.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a harmless treatment method for electrolytic manganese-chromium slag. Background technique [0002] The electrolytic manganese plant has used chromium passivation for a long time, which produces a large amount of hazardous waste chromium slag. The hexavalent chromium in chromium slag has strong oxidizing properties and strong alkalinity, so chromium slag is a hazardous waste and has been included in my country's "National Hazardous Waste List". Chromium slag is very harmful and can only be stored in special chromium slag warehouses for designated accumulation, but the cumulative stockpiles over the years have been considerable. If the stockpiled chromium slag is placed in the open air without rain-proof, seepage-proof, flying-proof and other protective facilities, it will seriously pollute surface water, groundwater and soil, and cause great harm to human beings and the environment. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00
CPCY02W30/78
Inventor 邓永光秦旭芝明宪权黄冠汉吴晓丹杨勇符慧文何溯结刘惠李美娴吴贤图
Owner DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND
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