METHOD OF RECYCLING SOLID WASTES, BASED ON A PROCESS OF SINTERING AND PELLETISATION (VERSIONS) Russian patent published in 2025 - IPC B09B3/00 C22B1/16 

FIELD: disposal of solid waste.

SUBSTANCE: present invention discloses a process for recycling solid wastes based on a sintering and pelletisation process. Proposed method comprises classification of solid wastes of steel works and/or municipal solid domestic wastes to define composition of solid wastes and to classify them in compliance with the following results: (a1) solid wastes containing organic carbon are classified as solid organic wastes; (a2) solid wastes containing zinc are classified as iron-containing solid wastes with high zinc content; (a3) solid wastes containing chlorine are classified as iron-containing solid wastes with high salt content; (a4) rest is classified as iron-containing solid wastes with low content of salt and zinc; based on content of volatile substances in the organic solid wastes in terms of dry mass, the organic solid wastes are further divided into organic solid wastes with high content of volatile substances and organic solid wastes with low content of volatile substances. Thereafter, solid wastes are pretreated. After classification and pretreatment of solid wastes from several sources, the pretreated slag obtained as a result of pretreatment is fed to a sintering and pelletisation process for final recycling; at the same time, the exhaust gas formed during the pretreatment process can also be imported into the sintering flue gas for co-cleaning, and the waste water formed as a result of additional preliminary purification is also treated together with the waste water formed during the sintering and pelletisation process, by means of unified waste water treatment and treatment of salt resources.

EFFECT: in the end the method provides complete process recycling of various solid wastes, completely eliminating the impact of solid wastes on the environment and the risk of secondary contamination.

12 cl, 7 dwg, 1 tbl, 32 ex