FIELD: process engineering.
SUBSTANCE: invention relates to disposal of plating wastes, for example, slimes, by their processing and can be used at nonferrous production plants. Proposed process comprises addition of pyrocatechin in amount of 0.7-0.9 g per 1 litre, of suspension with moisture content of over 90%, mixing for 48 hours and separation of filtration precipitate. Produced filtrate comprises pyrocatechin complexes of metals extracted from plating slime.
EFFECT: decreased number of jobs, no aggressive reagents, yield of up to 89,7% of commercial product.
4 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF UTILIZATION OF GALVANIC PROCESS SLUDGE | 2002 |
|
RU2217529C1 |
| METHOD FOR REDUCING EMISSION INTO AQUATIC MEDIUM OF CHEMICAL ELEMENTS FROM GALVANIC SLUDGE | 2020 |
|
RU2742757C1 |
| METHOD OF REWOKING ELECTROPLATING PROCESS SLUDGES | 2000 |
|
RU2170276C1 |
| PROCESSING METHOD OF SLURRIES OF GALVANIC PRODUCTIONS | 2012 |
|
RU2504589C1 |
| METHOD FOR PROCESSING ZINC-CONTAINING GALVANIC SLUDGE TO OBTAIN NANOPARTICLES OF ZINC OXIDE | 2022 |
|
RU2799182C1 |
| FERRITIZATION-INVOLVING METHOD OF STABILIZING ELECTROPLATING SLUDGES | 1996 |
|
RU2116978C1 |
| METHOD FOR PROCESSING SLURCHEN OF ACID MINE WATER | 2018 |
|
RU2690330C1 |
| METHOD TO PROCESS SLUDGE OF NEUTRALISATION OF ACID MINE WATERS | 2012 |
|
RU2482198C1 |
| PROCEDURE FOR PROCESSING FINAL TAILINGS OF GALVANIC PRODUCTION | 2010 |
|
RU2422543C1 |
| COPPER GALVANIC SLUDGE PROCESSING METHOD | 2013 |
|
RU2535110C1 |
