1. Process introduction


A new process of direct reduction ironmaking of low-grade iron containing materials (more than 35% iron). The carbon emission of blast furnace is 60 ~ 50% lower than that of traditional blast furnace process.


Scheme 1: use the DC plasma electric furnace of our company and press the ball directly into the furnace for smelting (one ton of raw material consumes about 900 degrees of power).

Scheme 2: natural gas is preheated to 1000 ℃ (50m of natural gas is consumed for one ton of raw material) ³ Left and right). Then it is smelted in DC plasma electric furnace (about 390 degrees per ton of raw material).

Copper slag, tin slag, gas cutting slag, ore, grinding wheel ash, oxide skin, dust removal ash, tailings, etc. are suitable for use.


Two end products are obtained from smelting, one is low-carbon pig iron (bread iron) and the other is water slag, which can be sold to cement plant as clinker.


2. Energy saving principle


This process uses the electromagnetic stirring characteristics of DC plasma electric furnace to increase the fluidity and thermal conductivity of molten liquid, with uniform temperature and high yield. At the same time, combined with the advantages of DC furnace power factor up to 0.95 ~ 0.98 (arc temperature 4000 ℃), the melted material can quickly reach the melting point, shorten the smelting time and obtain high-quality metal.


3. Process advantages


(1) New energy saving (2) ultra low carbon emission (3) high metal yield (4) high product quality


The metals or alloys we have directly smelted from various ores, solid wastes and hazardous wastes include:


1. Iron ore - iron 7 Ilmenite - iron and high titanium slag 13 Copper - Copper


2. Gas cutting slag - iron 8 Chrome ore, chrome slag - ferrochrome 14 Tin slag - Tin


3. Dust removal ash - iron 9 Manganese ore ferromanganese 15 Battery lead paste, lead mud - lead


4. Copper slag - iron 10 Nickel ore, catalyst - ferronickel 16 Waste circuit boards - copper and precious metals


5. Zinc slag - iron 11 Molybdenum nickel ore - molybdenum nickel ferroalloy 17 Rare and precious metal ores and catalysts - rare and precious metals


6. Red mud - iron 12 Silica, silica mud - ferrosilicon, metallic silicon




Our company can provide large, medium and small test conditions and venues. Welcome to process and test with incoming materials


Our company's multi-functional DC furnace, a set of equipment, can smelt all kinds of metal and non-metallic materials


Micro electricity: 13949514533 18790865262




New energy-saving DC plasma furnace · new concept low-carbon smelting process · green environmental protection · energy saving and consumption reduction