New techniques for processing wastepaper

Resumo

The paper presents processing techniques of waste newsprint paper. Wastepaper was soaked in a soda or a hydrochloric solution and heated in a reactor with limited air access or in an autoclave. In the first stage, at 300°C, we obtained brittle carbonated coal with particle sizes of 10–50 µm, which can be used after milling as an additive in poor coals in the production of a coal-water slurry fuel. At the second stage, at 500–600°C, we obtained an amorphous carbon containing of up to 91.2% of C, which is widely used in the tire, rubber, and paint and varnish industries.