METALLURGICAL PRODUCTION WASTE TREATMENT EFFICIENCY INCREASE

Metallurgical enterprises, concentration plants, gold-mining plants, coke and by-product production facilities and electrodeposition plants waste water treatment from carbolic acid and hydroxy benzene are getting increasingly important over past decade due to continuing expansion of cyanation methods in metallurgical industry, and coke production ramp up. The most dangerous waste water pollution agents are soluble organic matters: phenols, detergents, oil-products, cresols, xanthogenates, cyanides. Existing methods of waste treatment, including electric and ozone oxydazing, reagent purification methods as extraction, are of low efficiency, or result in cross contamination by reagents, namely by butyl acetate or benzol. Sorption methods engaging activated carbon or synthetic sorbents are expensive processes, since later include regeneration, which leads to increase of net cost of the product and sorbents disposal necessity. Along with it, metallurgical enterprises are sources of various production waste types. Part of waste, fraction lower than 0.01mm, can be used as raw material for multifunctional sorbent based on ferromanganese nodule. Following method allows to resolve different tasks: lowering of man-induced pressure of production facilities by reusing waste as raw material for multifunctional sorbents; mineral resources usage efficiency increase by lowering amount of waste produced; multifunctional sorbents production, which allows to remove cyanides and phenols from waste waters. Usage of ferromanganese nodule as raw material is highly perspective due to diversified mineral composition of nodules. Owing to low cost of ferromanganese nodules, these are used as rough material for manganese dioxide and ferrous oxide (III) production.