Iron-carbon micro-electrolysis filler and preparation method thereof

The invention discloses an iron-carbon micro-electrolysis filler and a preparation method thereof. The iron-carbon micro-electrolysis filler is prepared from 30 to 45 parts by weight of partially carbonized lignite, 5 to 10 parts by weight of coking coal, 40 to 50 parts by weight of iron-containing metallurgical dust and an appropriate amount of a binder. The preparation method comprises the following steps of mixing the partially carbonized lignite, the coking coal, the iron-containing metallurgical dust and coal tar, processing the mixture into spherical particles, and carrying out microporous activation to obtain the iron-carbon micro-electrolysis filter. In the iron-carbon micro-electrolysis filter, iron and carbon exist in a form of an iron-carbon containment framework, an iron skeleton and a carbon chain are crossed with each other, and iron particles are uniformly dispersed around carbon particles so that the problem of hardening of the traditional micro-electrolysis filler is solved. The iron-carbon m