Taking the by-product zinc mud from the production of sodium formaldehyde sulfoxylate as raw material,dissolving the zinc mud by emulsifer,converting the zinc into zinc hydroxide by using H_2O_2 as an oxidant,then the basic zinc carbonate precipitate is obtained by using CO_2 as a precipitator.

The carbon-bearing pellets made of zinc-bearing dust and sludge,iron concentrates and additive of agglomerant were reduced at 1 000~1 200 °C,the effects of different kinds of additive and reduction temperature on the strength and metallization rate of carbon-bearing pellets were studied.