Method for preparing aggregate from electrolytic manganese residues and cooperatively preparing acid

The invention provides a method for preparing aggregate from electrolytic manganese residues and cooperatively preparing acid, which comprises the following steps: firstly, drying the electrolytic manganese residues, and preparing ammonia water and concentrated sulfuric acid from the obtained first...

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Main Authors QI YONGFENG, DAI WENBIN, CHEN XUEGANG, CHEN KUIYUAN, WANG SHUXIAO, CHEN XI
Format Patent
LanguageChinese
English
Published 07.06.2024
Subjects
AMMONIA
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
CYANOGEN
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The invention provides a method for preparing aggregate from electrolytic manganese residues and cooperatively preparing acid, which comprises the following steps: firstly, drying the electrolytic manganese residues, and preparing ammonia water and concentrated sulfuric acid from the obtained first flue gas; then, the dried manganese slag, a regulator and first pulverized coal are subjected to mixed grinding and pressing, then fuel and industrial oxygen are introduced, raw mixed slag is roasted, and obtained second flue gas is returned to the drying step; cooling the roasted manganese slag, and returning the flue gas to the roasting step; and finally, the cooled roasted manganese slag is sequentially subjected to first screening, shaping and second screening, and artificial sand and coarse aggregate are obtained. According to the treatment method for the electrolytic manganese residues, the electrolytic manganese residual tailings can be utilized at a high value, coarse and fine aggregates, ammonia water and
Bibliography:Application Number: CN202410588803