Nodulizing

nodulizing

[′näj·ə‚līz·iŋ] (engineering) Creation of spherical lumps from powders by working them together, coalescing them with binders, drying fluid-solid mixtures, heating, or chemical reaction.

Nodulizing

 

the process of consolidating ore fines and concentrates for smelting by sintering, pelletization, or briquetting. Nodulizing improves the metallurgic properties of the ore by altering the chemical composition: it removes harmful impurities, such as sulfur and volatile gases, and increases reducibility. As a result of nodulizing, mechanical strength is increased, and the ore acquires a porous structure.

In 1973 in the USSR and other industrially developed countries, over 95 percent of iron ore that was smelted in blast furnaces was nodulized, primarily as agglomerates and pellets.