Nanjing Tengda Machinery Equipment Co., LTD. products

Aluminum dross, or aluminum ash is the mixture of metallic aluminum and non-metal part mostly aluminum oxide. Dross is formed on the surface of molten aluminum or its alloys by oxidation. It is a valuable byproduct of any aluminum smelter or aluminum foundry, which is recycled to recover the valuable aluminum metal worldwide. The recoverable metal content varies from 10% to 70%. Typical dross generation from a primary operation can be from 0.8% to 1.3% of aluminum output. From the secondary smelters it can reach up to 10%. Primary dross is called white dross, while secondary dross is called black dross.

During various stages of iron and steel production a number of iron bearing by-products are generated. Since these by-products can’t be recycled back in fine form, they need to be agglomerated. The traditional way to recycle them back to blast furnace has been the balling and sintering process. Steel mill produce wastes & by-products in large amount every year, such as iron ore fines, coke fines, steel slag, mill scale, filter dust, steel sludge, sinter fines. This is a challenge, and also a great chance. To transform iron-containing residue material into valuable products, briquetting process is an advanced solution.

Flue dust briquetting machine is particularly adapted for converting iron ore fines, blast furnace flue dust, mill scale, steel slag, steel sludge and other sources of iron and iron compounds in finely divided state into briquettes as a substitute for lump ore in the natural state. Flue dust from steelmaking, containing rich iron as mill scale (70% by weight), is produced in large quantity annually. Mixed with sodium silicate and pressed into briquettes, flue dust could be charged into oxygen converter.

This page relates to the making of composite briquettes of iron and steel plant wastes by cold briquetting process. It’s a process for cold briquetting of steel plant by-products such as iron ore fines, flue dust, mill scale, coke fines, steel slag and the like with an improved binder matrix, consisting of a combination of different in-organic binders, to make composite briquettes. The briquettes obtained have adequate green strength, cold-crushing strength and RDI and are suitable as blast furnace charge.