The parameters and specifications of aluminum melting furnaces vary depending on factors such as model, manufacturer, and production requirements. Here are some common parameters and specifications for your reference:
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Furnace type Crucible aluminum melting furnace
A crucible aluminum melting furnace is a smelting equipment used to melt aluminum and aluminum alloys. It has the following characteristics:
Advantages: It is more mobile, suitable for frequent changes in alloy grades and intermittent production, and has high smelting quality; the chemical composition of the alloy is almost unaffected by the furnace gas, and the temperature of the alloy liquid is also relatively uniform.
Disadvantages: Low thermal efficiency, high fuel consumption, small crucible capacity, poor working conditions, and large-scale production is no longer applicable.
The structure of a crucible aluminum melting furnace usually consists of a furnace body, a crucible, a heating element, a furnace cover lifting mechanism, an electrical automatic temperature control system, etc.
The furnace shell is generally welded into a cylindrical shape by section steel and steel plates, and the furnace lining is made of refractory bricks and other materials. Its heating methods are diverse, including fuel oil, gas, resistance heating, etc Oil crucible furnaces often use heavy oil and diesel as fuel.
Gas crucible furnaces often use coal gas as fuel. According to the pressure, the gas can be divided into high-pressure coal gas (pressure is about 70kPa) and low-pressure coal gas (pressure is 10-20kPa) crucible furnaces.
Resistance crucible furnaces use the heat energy generated by electrically heated shells to heat the crucible. They are suitable for alloys with low melting points and high quality requirements, such as aluminum, magnesium, zinc, lead, tin and bearing alloys.
There are many choices for the material of the crucible. For example, cast iron crucibles are often made of heat-resistant cast iron of RT Si-5.5 and RQT Si-5.5 grades; steel crucibles are divided into cast steel crucibles and steel plate welded crucibles.
Cast iron crucibles and steel crucibles are generally used to melt aluminum alloys and fusible alloys; graphite crucibles are mostly used to melt copper alloys and some alloys with higher melting points.
In actual applications, the specific technical parameters of crucible-type aluminum melting furnaces will vary depending on factors such as model and manufacturer. For example, the loading capacity has different specifications such as 20kg, 100kg, 300kg, 500kg, etc.; the power will also change accordingly; the temperature can generally reach 850℃ or higher; the crucible size varies according to the size of the loading capacity.
If you need to buy a crucible aluminum melting furnace, it is recommended to comprehensively consider factors such as the performance, quality, price, and manufacturer's reputation of the equipment, and choose the appropriate model and specifications according to your own production needs.
At the same time, during use, pay attention to safe operation and follow relevant operating procedures and precautions to ensure the normal operation of the equipment and the safety of the operator.
Reverberatory furnace aluminum melting furnace
Reverberatory furnace aluminum melting furnace is an industrial equipment commonly used for aluminum smelting. It has the following characteristics:
Large capacity: It can handle a large amount of aluminum raw materials and is suitable for large-scale production.
Relatively high thermal efficiency: Through reasonable furnace structure and combustion system design, energy utilization efficiency can be improved. Its working principle is to use the high-temperature flame and hot air generated by fuel combustion to heat and melt the aluminum material in the furnace through reflection.
The structure of a reverberatory aluminum melting furnace usually includes the furnace body, furnace top, furnace chamber, combustion system, exhaust system and other parts.
The furnace body is made of refractory materials to withstand high temperatures and protect the furnace structure.
The furnace top has different designs, some are arched and some are flat.
The furnace chamber is the main space for melting aluminum.
The combustion system is responsible for providing fuel and combustion air to ensure sufficient combustion.
The exhaust system is used to discharge the exhaust gas generated by combustion. In practical applications, the reverberatory aluminum melting furnace has some advantages:
The operation is relatively simple and the smelting process is easy to control.
It can adapt to aluminum raw materials of different qualities and shapes. However, it also has some disadvantages:
The equipment is large in size and occupies a large area.
The construction and maintenance costs are high.
Vertical aluminum melting furnace
The vertical aluminum melting furnace is a vertically placed furnace body, in which aluminum material flows from top to bottom. It is usually constructed of refractory bricks or refractory castables. This aluminum melting furnace has the following characteristics:
High thermal efficiency: With the vertical furnace structure, the charge can fully absorb the flue gas waste heat in the vertical furnace, reduce the exhaust temperature of the furnace top, and greatly improve the thermal efficiency. The charge has been preheated to a near-melting state when entering the bottom furnace, ensuring a high melting rate and low energy consumption.
Uniform furnace temperature: The furnace gas circulation is strong, and there is no local overheating or overburning, which is conducive to improving product quality and extending the service life of the furnace.
Fast melting rate: The vertical furnace preheating combined with impact heating can quickly melt aluminum material.
Low energy consumption: Compared with some other furnace types, it has lower energy consumption.
Low burnout: The flame is far away from the charge, which can reduce burnout.
Compact structure: The overall structure is relatively compact.
Simple operation: For example, it is convenient to add materials on the top of the furnace, with low labor intensity, and adding materials does not take up melting time. Its specifications can be divided into 0.1T, 0.3T, 0.5T, 0.7T, 1T, 2T, 3T, 5T and other types according to the melting rate (tons of aluminum/hour).
Vertical aluminum melting furnaces are suitable for continuous casting and rolling of aluminum rods and pure aluminum strips, as well as concentrated smelting of unadjusted components such as die casting, low-pressure casting, and general casting.
In actual use, it is necessary to select aluminum melting furnaces of appropriate specifications and types according to specific production needs, scale and process requirements, and operate and maintain them reasonably to ensure their efficient and stable operation. At the same time, attention should be paid to safe operation and compliance with relevant operating procedures and safety standards.
Capacity
Small aluminum melting furnace: usually tens of kilograms to hundreds of kilograms.
Medium-sized aluminum melting furnace: several hundred kilograms to several tons.
Large aluminum melting furnace: several tons or even tens of tons.
Heating method
Electric heating: including resistance wire heating, medium frequency induction heating, etc.
Gas heating: such as natural gas, liquefied gas, etc.
Power
The power of electric heating varies from a few kilowatts to hundreds of kilowatts depending on the furnace type and capacity.
Temperature
The working temperature is generally between 700-900°C.
Furnace size
The length, width and height vary greatly depending on the capacity and furnace design.
Energy consumption
Different heating methods and insulation measures will affect energy consumption. The energy consumption index of electric heating is usually calculated in kilowatt-hours/ton of aluminum, and gas heating is calculated in cubic meters of gas/ton of aluminum.
Control system
It has functions such as temperature control, fault alarm, and operating parameter display.
When actually selecting an aluminum melting furnace, it is necessary to comprehensively consider factors such as specific production scale, process requirements, and energy supply to determine the most suitable parameters and specifications.
