METHOD FOR CLEANING WATER-TURNING WATER OF SYSTEMS OF GAS PURIFICATION OF Smelting furnaces and DISPOSAL OF METAL-CONTAINING Sludge AND DEVICE FOR ITS IMPLEMENTATION

摘要

1. A method for purifying circulating water of gas cleaning systems of smelting furnaces and utilization of metal-containing sludge, including magnetic separation, drying and briquetting, capturing gases and other volatile compounds released during drying, and passing them in a centrifugal field in the presence of liquid, characterized in that magnetic separation circulating water is produced in a flowing mode and the slurry suspension obtained after magnetic separation is subjected to additional magnetic dehydration, and then preliminary thickening in gravitational or centrifugal fields, and the circulating water released during dehydration and thickening is directed to the beginning of the magnetic separation process. ! 2. The method according to claim 1, characterized in that before magnetic dewatering and preliminary thickening, the slurry suspension is treated with a flocculant. ! 3. The method according to claim 1, characterized in that the disposal of gases and other volatile compounds released after drying in a centrifugal field is carried out using purified circulating water, which is then sent to the beginning of the magnetic separation process. ! 4. A device for implementing the method, including a magnetic separator, a continuous-flow furnace with a rotating drum, a press, a rotoclone, characterized in that the magnetic separator for purification of circulating water is sealed, and a magnetic separator for dewatering a sludge product, a belt filter or decanter. !five. Device according to claim 4, characterized in that the magnetic separator for dewatering the sludge product, belt filter or decanter is equipped with a liquid feeding device