A kind of special water-based binder for rotary hearth furnace and production method thereof

Abstract

The invention provides a special water-based binder for a rotary hearth furnace and a production method thereof, belonging to the technical field of binders. The invention adopts starch residue, polyvinyl alcohol, ammonium persulfate, polyacrylamide, sodium hydroxide and water to prepare the water-based binder suitable for rotary hearth furnace. The water-based binder of the invention has the characteristics of low cost, energy saving and environmental protection, can effectively improve the spheroidization rate of pre-reduced balls of the rotary hearth furnace and the reduction rate of iron elements, and greatly reduces the cost of dust agglomeration and pre-reduction.

Description

technical field

[0001] The invention relates to the technical field of water-based binders, in particular to a special-purpose water-based binder for rotary hearth furnaces and a production method thereof. Background technique

[0002] Steel smelting has to go through three major processes: sintering, iron making and steel making. The total amount of dust produced is 8% to 15% of the steel output. The total amount of dust recovered by environmental protection dust removal is about 100 million tons to 160 million tons each year. It has a wide variety, different properties, complex components, and is difficult to utilize. For many steel mills without environmental awareness, they will choose the form of landfill and open-air stacking, and these dusts contain many harmful elements, which are harmful to soil, water quality and atmospheric environment. There are also companies that directly return all the generated dust to the sintering process for reuse. Although this method ca...