RU2010152797A

RU2010152797A - METHOD FOR ENRICHMENT AND PROCESSING OF SOLID MUNICIPAL WASTE

Info

Publication number: RU2010152797A
Application number: RU2010152797/13A
Authority: RU
Inventors: Лазарь Яковлевич Шубов (RU); Лазарь Яковлевич Шубов; Оксана Николаевна Борисова (RU); Оксана Николаевна Борисова
Priority date: 2010-12-24
Filing date: 2010-12-24
Publication date: 2012-06-27
Also published as: RU2542116C2

Abstract

1. Способ обогащения и переработки твердых коммунальных отходов, включающий их сортировку по крупности с выделением биоразлагаемой фракции крупностью от -60 до -100 мм, подвергаемой гравитационной сепарации в водной среде, отличающийся тем, что концентрат гравитационной сепарации последовательно подвергают термообработке в течение 1,5 ч при 150°С до содержания влаги 38-40%, первичному дроблению в дробилке ударно-режущего действия со щелью между колосниками решетки 40 мм, грохочению продукта первичного дробления по классу 20 мм с выделением подрешетного и надрешетного продукта, сушке подрешетного продукта крупностью -20+0 мм при температуре 100°С до содержания влаги 10-12% и его вторичному дроблению предпочтительно в валковой дробилке со щелью 3 мм, грохочению продукта вторичного дробления по классам 5 мм и 10 мм с выделением подрешетного и надрешетного продукта, дроблению третьей стадии подрешетного продукта крупностью - 5+0 мм в валковой дробилке со щелью 1 мм, а подрешетного продукта крупностью -10+5 мм в валковой дробилке со щелью 3 мм, раздельному грохочению продуктов дробления третьей стадии соответственно по классам 2 мм и 5 мм с выделением подрешетных продуктов крупностью - 2+0 мм и - 5+0 мм и их объединением в готовый продукт (биоразлагаемая фракция) и надрешетных продуктов. !2. Способ по п.1, отличающийся тем, что продукт термообработки гравитационного концентрата подвергают перед первичным дроблением последовательно магнитной сепарации с извлечением черных металлов и электродинамической сепарации с извлечением цветных металлов. ! 3. Способ по п.1 или 2, отличающийся тем, что надрешетные продукты всех стадий грохочения, выв� 1. A method of enrichment and processing of solid municipal waste, including their sorting by size with the release of a biodegradable fraction with a particle size of -60 to -100 mm, subjected to gravitational separation in an aqueous medium, characterized in that the gravity separation concentrate is sequentially subjected to heat treatment for 1.5 h at 150 ° C to a moisture content of 38-40%, primary crushing in an impact-cutting crusher with a gap between the grates of a 40 mm grate, screening of the primary crushing product in a 20 mm class with the release of undersize and oversize products, drying an undersize product with a size of -20 +0 mm at a temperature of 100 ° C to a moisture content of 10-12% and its secondary crushing, preferably in a roll crusher with a slot of 3 mm, screening of the secondary crushing product in 5 mm and 10 mm classes with the release of undersize and oversize products, crushing of the third stage of undersize product size - 5 + 0 mm in a roller crusher with a 1 mm gap, and the undersize product size -10 + 5 mm in a roller crusher with a slot of 3 mm, separate screening of crushing products of the third stage, respectively, in classes 2 mm and 5 mm with the separation of undersize products with a size of - 2 + 0 mm and - 5 + 0 mm and their combination into a finished product (biodegradable fraction) and oversize products. ! 2. The method according to claim 1, characterized in that the product of the heat treatment of the gravity concentrate is subjected to successive magnetic separation with the extraction of ferrous metals and electrodynamic separation with the extraction of non-ferrous metals before the primary crushing. ! 3. The method according to claim 1 or 2, characterized in that the oversize products of all stages of screening,

Claims

1. The method of enrichment and processing of solid municipal waste, including sorting by size with the release of a biodegradable fraction with a particle size of from -60 to -100 mm, subjected to gravity separation in an aqueous medium, characterized in that the gravity separation concentrate is subjected to heat treatment in series for 1.5 h at 150 ° C to a moisture content of 38-40%, primary crushing in an impact-cutting crusher with a gap between the grid grates of 40 mm, screening of the primary crushing product in the class of 20 mm with allocation of undercut sieve and over-sizing product, drying of the under-sieve product with a grain size of -20 + 0 mm at a temperature of 100 ° C to a moisture content of 10-12% and its secondary crushing, preferably in a roll crusher with a slot of 3 mm, screening of the secondary crushing product in classes of 5 mm and 10 mm with the allocation of the under-sieve and over-sieve product, crushing of the third stage of the under-sieve product with a grain size of 5 + 0 mm in a roll crusher with a gap of 1 mm, and the under-sieve product with a grain size of -10 + 5 mm in a roller crusher with a gap of 3 mm, separate screening of the crushing products of the third s adii respectively by Classes 2 mm and 5 mm from the release of undersize grain size - 2 + 0 mm - 5 mm + 0 and combining them into a finished product (biodegradable fraction) and oversize products.

2. The method according to claim 1, characterized in that the heat treatment product of the gravity concentrate is subjected to magnetic separation with primary extraction of ferrous metals and electrodynamic separation with extraction of non-ferrous metals before primary crushing.

3. The method according to claim 1 or 2, characterized in that the oversize products of all stages of screening, derived from the process, are sent to thermal processing.