What Is Ferromanganese Alloy? How Did It Form? Come And Find Out!
Production mode of ferromanganese alloy: At present, ferroalloy enterprises mainly use double method to produce low carbon alloy. The silicon is reduced to produce high silicon alloy with blue carbon in the ore furnace, and then the manganese ore is reduced with liquid high silicon alloy, so as to obtain the alloy. The shaking ladle method refers to adding preheated manganese ore, white ash and liquid high silicon alloy to the shaking ladle, and then shaking, using the sensible heat of the charge and the chemical heat generated by reducing manganese ore for refining reaction, so as to obtain low and medium carbon alloy.
In some places, the bag shaking method is also called the furnace shaking method. Liquid high-silicon alloy and preheated manganese slag are mixed in the shaking ladle, mixed in the shaking ladle, shaking ladle, so that the silicon mno reaction, mno shaking method of equipment structure is relatively complex, shaking ladle production efficiency is low, equipment structure in slag is complex, mno residue is high, shaking ladle furnace lining corrosion is serious, leading to the ladle life is short. Generally less than 20 furnace to repair resistant material, high production cost.
The production of alloy bottom blowing and mixing equipment includes steel bags and bottom blowing devices installed at the bottom of steel bags. The inner wall of the steel bag is provided with a thermal insulation layer, and the bottom blowing device is connected with the three-way on-off valve through the gas conveying pipe, and the two inlet ends of the three-way on-off valve are respectively connected with the collection pipe and the air pipe.
The assembly pipe includes nitrogen pipe and oxygen pipe, and the three groups of pipes include the manual cut off valve, pressure gauge, pressure transmitter, check valve and the flowmeter at both ends of the pipe set along the direction of gas transmission. The reaction between the raw materials inside the steel bag can be realized by bottom blowing and stirring, which replaces the traditional alloy shaking bag method to achieve higher production efficiency, reduce power consumption and corrosion of the steel bag lining. When the bottom blowing device is blocked or ventilated, the oxygen contained in the high pressure compressed air and compressed air in the air pipeline reacts with the high temperature slag steel to burn the blocked ventilation hole and improve the service life and blowing rate of the bottom blowing device.
The bottom blowing device comprises a resistant material mounted at the bottom of a steel bag. The resistant material is provided with a plurality of groups of bottom blow pipes. One end of the bottom blow pipe is connected with the shunt pipe on the gas conveying pipe, and the other end is provided with a gas shunt mechanism to realize a more efficient reaction inside the steel bag and ensure the production of ferroalloy. At least four groups of resistant materials are distributed along the steel bag, and at least two groups of bottom blow pipes are set for each group of resistant materials to improve the mixing speed and reaction efficiency of steel bag and gas, replace the traditional shaking bag method, and save energy.
The gas diverting mechanism comprises a diversion tube with the bottom blow pipe away from one end of the diverting pipe. The guide tube is located at the top of the resistant material, and the top of the guide tube is provided with multiple sets of bottom mouthpieces, which increases the contact area with the raw materials in the steel bag, achieves the purpose of efficient mixing, and reduces the production cost of the alloy. The gas diverting mechanism comprises a diversion tube through a connecting pipe and a bottom blow pipe away from one end of the diverting pipe, and the outlet end of the two groups of connecting pipes is reversed.
The guide tube is distributed on both sides of the resistant material, and multiple sets of bottom mouthpieces are set at the top of the guide tube to make the reaction between gas and raw material faster and more effective, reduce the dead zone area, and improve the refining effect and efficiency of agitation. The stop valve is connected in parallel to both ends of the check valve, and the pneumatic cut-off valve is also arranged on the three sets of pipes to ensure the reaction between the gas and the alloy production raw material.
Through three groups of pipeline Settings, provide nitrogen and oxygen for alloy production, according to the pressure gauge and flow meter to adjust the nitrogen and oxygen delivery, according to the production needs to switch the type of bottom blowing air source, through the bottom blowing device and gas shunt mechanism, increase the contact area between the gas and raw materials, replace the traditional ferro alloy, to achieve higher production efficiency, Reduce power consumption and corrosion of steel packaging lining, and obtain higher quality alloy. When the bottom blowing device is blocked or ventilated, the oxygen contained in the high pressure compressed air and the compressed air in the air pipeline will react with the high temperature slag steel, boil the blocked ventilation hole, and improve the service life and blowing rate of the bottom blowing device.
