Silicon manganese furnace for ferroalloy ore furnace and refining equipment

Technical Description of Silicon Manganese Ore Thermal Furnace:

1.1 Silicon manganese alloy grades and applications
Silicon manganese alloy is an alloy composed of silicon, manganese, iron, a small amount of carbon, and other elements. It is a widely used and high-yield iron alloy. Its consumption ranks second among electric furnace ferroalloy products. Manganese and silicon in manganese silicon alloys have a strong affinity for oxygen. When manganese silicon alloys are used in steelmaking, the deoxidation products MnSiO3 and MnSiO4 produced have melting points of 1270 ℃ and 1327 ℃, respectively. They have the advantages of low melting point, large particle size, easy floating, and good deoxidation effect.

1.2 Brief description of process flow
After sorting, qualified materials such as manganese ore and manganese rich slag are stored in the raw material yard, which also contains raw materials such as coke and electrode paste. Various raw materials are mixed according to the formula requirements for smelting alloys. The raw materials are lifted by the inclined bridge trolley to the four level platform of the main plant, and then sent to the hopper by the circular distribution trolley. They flow into the furnace through the material pipe.
The furnace charge enters the semi enclosed mineral thermal furnace, and the 35KV power supply is introduced into the furnace through a transformer and three-phase electrodes. The electrodes generate arc heat between them and the furnace charge, which is transmitted to the furnace filled with the furnace charge. Through the arc heat and resistance heat, the silica can be reduced to silicon manganese alloy. During the entire smelting process, the strength of the voltage and current on the electrodes is set according to the smelting process parameters, and the values of the voltage and current are also different at different times, that is, the power input into the furnace is different. The electrodes are always stably inserted into the furnace charge in the furnace, and the gas uniformly escapes from the entire charge surface. The arc is not exposed from beginning to end, and the mixed furnace material is added to the furnace in small batches as the material level decreases, keeping the material level in the furnace at a certain height. The electrode is in a flat cone shape around it. When the silicon manganese iron generated by reduction in the furnace reaches a certain level, a burner or round steel is used to open the furnace hole, release the iron and slag, remove the slag in the alloy, and then cast into ingots in the ingot mold. Electric furnaces are powered under the prescribed power supply system. The average electric furnace produces iron every 2 hours, with four furnaces produced every 8 hours per shift. Select water quenched slag, and after the iron casting is completed, use a winch to pull the molten iron ladle to the casting room for about 20 minutes. The overhead crane will lift the molten iron ladle and cast it into the ground ingot mold. After the alloy has cooled slightly, pry it up and lift it into the iron container with a crane. After cooling, store it in the warehouse.