A METHOD FOR RECOVERING K AND MN FROM DUST OF ELECTRIC FURNACE, AND A METHOD FOR PREPARING FERROUS OXIDE AND POTASSIUM SULFATE FROM K FROM DUST OF ELECTRIC FURNACE AND FERROUS SULFATE SCRAP

摘要

PURPOSE: A method for recovering K and Mn from dust of electric furnace is provide to collect K and Mn by using water and to use potassium hydroxide aqueous solution as a neutralizer. CONSTITUTION: A method for recovering K and Mn from dust of electric furnace comprises a step of mixing and filtering washed water in an electro furnace and obtaining potassium hydroxide by filtering the filtrate; a step of washing, stirring, and filtering the slurry to collect manganese-containing slurry; a step of recirculating the filtrate into the washed water of the electro furnace. A method for preparing ferrous oxide and potassium sulfate from K from dust of electric furnace and ferrous sulfate scrap comprises a step of dissolving iron sulphate scrap into the potassium hydroxide solution; and a step of manufacturing filtrate solution after separation and collecting potassium sulphate powder.