Efficient recycling method of silicomanganese slag

The invention discloses an efficient recycling method of silicomanganese slag, which comprises the following steps of: proportionally and uniformly mixing silicomanganese slag and water to form slurry, regulating the stirring rate, and adding a certain concentration of acid to perform acid pretreatment; carrying out filter pressing on the slurry, carrying out liquid-solid separation, drying filterresidues to obtain a white carbon black product, and reserving filtrate for later use; slowly adding a certain concentration of alkali liquor at a certain stirring rate to precipitate required ions;then carrying out solid-liquid separation; and adding sulfuric acid or ammonium carbonate into the manganese hydroxide slurry to obtain a manganese sulfate or manganese carbonate product, and adding aluminum hydroxide crystals into the sodium metaaluminate liquid for coprecipitation to obtain an aluminum hydroxide product. According to the method, the silicon-manganese slag is subjected to acid pretreatment to obtain the w