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Structure and working principle
Pure oxygen and natural gas are used to mix and burn through the burner, spraying a flame of more than 2700 degrees Celsius, heating the furnace wall and melting the metal charge through the heat conduction of the furnace wall during the rotation process.
The furnace body of the rotary furnace is installed on the rotating frame, and the rotating frame can make the furnace body tilt in a certain Angle range under the action of the hydraulic cylinder, so as to realize the process actions such as charging, melting and dumping the slag.
At the same time, the furnace body can rotate around its axis under the action of the transmission mechanism, and the rotating movement improves the heating efficiency of the furnace, which is of great significance for the overheating of liquid iron. It is necessary to add a certain amount of slag-forming agent when melting metal in the furnace. Slag-forming agent and slag liquid have a protective effect on solid and liquid metal and can prevent metal oxidation.
There are seven kinds of rotary furnace, and the melting time of each furnace is between 60 and 80 minutes, in addition to the time of melting metal, each furnace also needs a certain amount of auxiliary time such as cleaning, feeding, iron, slag and so on.
Model and specification | RF3 | RF5 | RF8 | RF10 | RF15 | RF20 | RF30 |
Furnace liquid iron capacity /T | 3 | 5 | 8 | 10 | 15 | 20 | 30 |
Melting time /min | 60 | 75 | 90 | 100 | 110 | 120 | 135 |
Auxiliary time /min | 40 | 40 | 42 | 50 | 50 | 60 | 75 |
Total time /min | 100 | 115 | 132 | 150 | 160 | 180 | 210 |
Melting rate/(t/h) | 3 | 4 | 5.3 | 6 | 8.2 | 10 | 13 |
Maximum iron liquid production per shift per year /t | 3600 | 5200 | 7280 | 9000 | 11240 | 13340 | 17140 |
Rated flow rate of natural gas /Nm3 /h | 210 | 280 | 380 | 480 | 580 | 700 | 960 |
Rated oxygen flow rate /Nm3 /h | 480 | 650 | 900 | 1050 | 1350 | 1650 | 2200 |
Natural gas and oxygen pressure /MPa | 1.5~2.0 bar |
Superiority
In recent years, the major iron foundry in China introduced the furnace to produce and export gray iron and ductile iron castings, and achieved satisfactory results. The furnace has the following advantages: simple structure, convenient installation, less space occupied, low equipment investment:
1) Simple operation - Automatic control is realized in the smelting process, from the feed, iron and slag removal only one person can operate.
2) Strong adaptability - can produce gray iron, ductile iron, malleable cast iron, alloy cast iron, cast steel and copper, aluminum and other non-ferrous metal materials.
3) High melting efficiency, low cost, high casting quality - melting per ton of iron only takes 50 to 80 cubic meters of natural gas and 100 to 160 cubic meters of oxygen, the time is 60 to 100 minutes, the temperature is raised to about 1,500 yuan, the cost of melting iron per ton is only 280 to 350 yuan.
4) Safe, reliable and flexible.
5) Electricity consumption per hour generally does not exceed 25 kilowatt-hours.
6) Environmental protection and pollution-the carbon emissions of the rotary furnace are only 30% of the cupola, less than 38% of the converted carbon emissions of the electric coal used in the electric furnace, and there are basically no nitrides and sulfides in the exhaust gas, which belongs to the most environmentally friendly cast iron melting equipment at present.
It has completely independent intellectual property rights.
Developed furnace lining, reaching the world level.
Slagging agent effectively prevents metal oxidation, which is a major breakthrough in rotary furnace technology.
Strong power, precise gas distribution, zero nitrogen oxide emissions.
World-class melting technology, patented technology "slag operation method".
Warranty: 1 Year
40 Feet Container
Total Number of Staffs | 585 | ||
Total Number of Managers | 40 | ||
Total Number of Technical Staffs | 160 | ||
Total Number of QC Staffs | 15 | ||
Total Number of workers | 310 | ||
Total Number of other staffs | 60 | ||
Contact person | Mr .Su | Position | President |