Home

Oxygen-Enriched Side-Blowing Smelter

Oxygen-rich side-blown smelting technology is one of the modern oxygen-rich molten pool smelting technologies. It integrates processes of concentrate drying, roasting and smelting tasks. Its technical characteristics with wide adaptability to raw materials, simple material preparation, high productivity and low investment. Its most significant features are energy saving and environmental protection. After nearly 20 years of practice and improvement, China United’s oxygen-rich side-blown molten pool melting technology has developed into an approximately ideal system technology. It is a reliable and stable new molten pool smelting method

Contact

Download

Main Feature

Live Application Image

Technical Specification

Main Feature

Strong adaptability of raw materials. Can deal with desulfurization and non-desulfurization lead paste, lead glass, lead slag, lead dust and other lead-containing waste. Furnace material preparation is simple, raw materials can be directly added to the furnace after simple granulation.
Good heat and mass transfer. Oxygen-rich air through the side wall air outlet into the melting pot, combustion in the melting pot, stirring intensity, mass and heat transfer fast, high heat utilization, heat intensity per unit volume. It is especially suitable for the treatment of non-heat materials.
Good Operation on Safety. The furnace wall is protected by hanging slag, simple operation, safety and reliability.
High operation rate, long furnace life. The bottom of the furnace is refractory brick, strong resistance to slag and lead ice and copper erosion. The air nozzle has a long life, easy maintenance, low failure rate and low maintenance.
Good environmental protection. Adopting micro-negative pressure operation, no flue gas escape, no lead dust dispersion. The slag produced contains less than 1% lead, which is general solid waste and can be used as building materials.
Low treatment cost. Adopting oxygen-enriched combustion technology to treat lead paste, low energy consumption. Flue gas volume is small, flue gas sulfur concentration is high, low cost of flue gas desulfurization, lead recovery rate is high, according to practice data, the process slag rate <15%, slag containing lead <1%, lead recovery rate> 99%
Comparing with other process,the copper smelter adopts Oxygen-enriched side-blowing melting furnace has lower investment, smaller footprint and shorter construction period as the main furnace has low furnace height, simple furnace structure, less steel structure, no drying requirement, simple material batching system, small footprint of melting area and short construction period.
Strong material adaptability. The furnace does not have high requirements on the particle size and water content of the material, and can directly deal with all kinds of copper concentrates with water content of 7~ 10% and combustion auxiliary materials with particle size of 0~30mm.
Smelting furnace in the furnace to complete the slag matte separation, the smelting process soot rate is as low as 2% or less, the slag contains low copper, and thus copper, gold, silver, high direct yield, compared with other smelting furnace type has a greater advantage；
Separation of slag and matte is done in the single furnace directly,the dust rate is as low as less than 2%, and the copper content in the slag is low, the direct recovery rate of copper, gold, and silver is high2.2.5 The furnace structure is reasonable, the furnace life is long, and the operating rate is high. The smelting furnace is equipped with lance in the middle lower parts of the furnace body on both sides. The key parts of the furnace structure adopt copper water jacket slag protection technology. The lance uses patented technology and special composite materials. and installed inside the copper water jacket furnace, make it can resist to oxidation, erosion and corrosion, and has a long service life; no cleaning and maintenance are required. Smelting furnace operation rate is over 99%.2.2.6 Low labor intensity and high degree of automation. The furnace body has a fixed hearth, and the entire furnace has no moving parts except the electrode lifting device; the oxygen supply port of the furnace body can be self-cleaning due to the high oxygen concentration; the slag and copper matte operations are easy to operate, and the feeding port does not stick to the slag and does not need to be cleaned. The entire smelting process is highly automated, safe and reliable.2.2.7 The integrated energy consumption is low. This process has a high oxygen concentration, which can reach 80% to 85%. The oxygen pressure in front of the furnace is 110kPa, and the fuel rate is 2% to 4%. The high-temperature flue gas does not absorb cold air before entering the waste heat boiler, and the unit produces more medium-pressure steam.2.2.8 The environmental protection effect is good. The furnace body has good sealing performance and less smoke spillage. There is no high-temperature radiation around the furnace, high negative pressure operation at the feeding port, the exhaust gas emission standard is good and working environment is good.

Live Application Image

Technical Specification

Technical advantages:

The charge preparation is simple and can handle charge with various complex components;

The bed energy rate is high; the fuel and reducing agent can be either coal or natural gas.

Flexibly control the redox atmosphere in the furnace by adjusting the ratio of fuel, reducing agent, air, and oxygen.

Oxygen-enriched side-blown furnaces can be used not only as smelting equipment, but also as slag depletion or fumeification equipment, and are particularly good at processing various oxide raw materials;

The furnace body has good sealing performance, good environmental conditions in the workshop, high level of automation, relatively simple operation, and compact furnace structure;

No	Equipment List	Model	Unite	Qty
1	Furnace cylinder and base	8.4㎡ Q235	set	1
2	Slag outlet assembly	ZG50	PC	1
3	1~3 layers of connecting water jackets	16016012 Q235	Pc	62
4	Connecting steel frame	□250	Ton	38
5	1∽3 layers of copper water jacket	8002250150 T2	Pc	62
6	Primary air outlet assembly	T2	Pc	12
7	Secondary air outlet assembly	316L	Pc	12
8	Primary and secondary air supply ducts	Φ325 Φ80	Pc	1
9	Four-layer water jacket assembly	Q245R	Pc	20
10	Furnace top water jacket assembly	g20	Pc	3
11	Flue connection water jacket assembly	g20	Pc	4
12	Furnace frame	□400	Ton	36
13	Support rod (jack) assembly	Screw RodΦ=35 45#	Pc	103
14	Safety ports	g20	Pc	2
15	Charging spout assembly	g20	Pc	1
16	Stainless steel short section (flame arrestor)	316L	Pc	12
17	Furnace circulating water network fittings		batch	1
18	Refractory materials	MGZ	Ton	120
19	Subtotal

Cost Advantage:

Compared with other smelting methods that directly handle complex materials, such as Ausmelt, ISA and other methods, the oxygen-rich side-blown smelting technology has independent intellectual property rights and does not require the introduction of technology and expensive key equipment. The equipment is all domestically produced and construction investment is required. can be greatly reduced. At the same time, this technology is currently the most advanced molten pool melting technology, and its operating costs and technical indicators have reached leading domestic and foreign levels.