Jul. 30, 2025
Ferrochrome production process mainly includes several main steps such as beneficiation, smelting and refining of chromite. The beneficiation of chromite is to concentrate chromite minerals, remove gangue and other impurities and obtain rich ore suitable for smelting. Smelting is to reduce the enriched chromite and reducing agent (such as coke) at high temperature in the electric furnace to generate ferrochrome alloy. Refining is to further improve the quality of ferrochrome alloy, remove impurities and obtain satisfactory ferrochrome products.
1: The chrome ore and concentrate powder shall be sampled by the Quality Inspection Department for complete analysis before entering the plant. The raw material workshop shall be dried, refined, sieved, stacked and marked, waiting for the technical department to prepare the ore for use.
2: Sinter ore production: after finishing, the chrome ore is screened to be less than 5mm undersize (ore fines), stacked and marked according to different ore types, and sampled by the Quality Control Department for full analysis. The same ore powder, concentrate powder and auxiliary sintering agent enter the sintering proportioning station, and enter the sintering machine for sintering through mixing and pelletizing. The finished sinter is crushed and sieved. The undersize is stacked according to different ore types and marked for reuse. Oversize shall be stacked and marked according to different ore types or put into the batching pit, waiting for ore preparation by the Technical Department.
3: Pelletizing ore production: after finishing, the chrome ore is screened to be less than 5mm undersize (ore powder), stacked and marked according to different ore types, and sampled by the Quality Control Department for full analysis. The same ore powder, concentrate powder and auxiliary binder enter the ball pressing and blending station, enter the ball pressing machine for ball pressing through mixing, and the finished ball enters the steam kiln for drying after 8 hours. The finished ball will be stacked and marked according to the same ore type. The Quality Control Department will take samples for full analysis, screen before putting into the blending pit, put the oversize into the blending pit, wait for the technical department to prepare ore for use, and stack and mark the undersize according to different ore types for reuse.
4: The Quality Control Department shall take samples for complete analysis after the coke enters the plant, and the coke shall be dried, sieved, stacked and marked by the raw material section. The undersize shall be stacked and marked or sent into the sintering section for use as the sintering agent. The undersize shall be put into the batching pit for use as the reducing agent produced by the electric furnace.
5: The Quality Control Department shall take samples for complete analysis after the silica is delivered to the plant. The raw material section shall be stacked and marked or put into the batching pit for use as the slagging agent produced by the electric furnace.
The electric furnace (Ferrochrome Furnace) batching station shall set the batching value according to the batching list calculated by the Technology Department according to the blending amount of various minerals, coke and silica, and weigh through the automatic batching system. The mixture shall be intermittently fed by the weighing belt conveyor, inclined bridge belt conveyor and rotary distributor.
In the production process, power system, circulating water system, gas purification system, furnace bottom dedusting, nitrogen, electrode paste, water-quenched slag (bucket elevator), ladle, ladle, slag ladle, fixed mould, water-quenched iron, crown block, etc. shall be supplemented, and the tapping time shall be determined according to furnace conditions and smelting power consumption.
Slag samples shall be taken out of the ferrochrome furnace and sent to the Quality Inspection Department for analysis and test. The Technology Department shall adjust the production process and control the production process according to the furnace discharging conditions and test data.
When casting the fixed mould, take the iron sample and send it to the quality inspection department for analysis and test. After cooling and demolding, the fixed mould iron is quenched and crushed by water, and then transported to the finished product warehouse for weighing and stacking according to different furnace numbers, waiting for finishing and warehousing.
The flue gas generated during the operation of the electric furnace enters the gas purification system. The flue gas is purified through the settling chamber, cooler and filter. The purified gas (CO) is sent to the gas cabinet through the gas storage tank and supplied to the sintering machine for sintering. Recycling of smoke and dust. Such as plugging, ball pressing, sintering, etc.
The quality inspection department shall provide test data, crush, pack and weigh according to the ferrochrome order, make marks, put in storage and wait for delivery.
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Customized metallurgical machinery and equipment range: Electric Arc Furnace, Submerged Arc Furnace, LF Refining Furnace, Vacuum Furnace, Induction Furnace, Dust Remove System, Water Treatment Equipment, etc. Providing the most advanced equipment integration services, metallurgical equipment can be customized according to different needs of customers, and production capacity can be adjusted according to customer requirements.
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Induction Furnace
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The 5 ton electric arc furnace for steel-making is a special purpose equipment that makes ordinary steel, quality carbon steel, alloy steel and non-corrosive steel with electric arc as heat source and scrap steel (iron) as raw material.
15-ton electric arc furnace is used for the short-process steelmaking process, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.
The 30-ton AC electric arc furnace is used to melt scrap steel to produce steel. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode.
30 Ton electric arc furnace is used for steelmaking short process smelting, using 100% scrap steel or scrap steel + molten iron (pig iron), or scrap steel + sponge iron (DRI) as raw materials for steelmaking.
The 50-ton ultra-high power electric arc furnace (50TUPH EAF) adopts ultra-high power, high impedance technology, bottom tapping technology (ETB), furnace wall oxygen oil burner and furnace door carbon-oxygen gun technology.
DC electric arc furnace is an electric arc furnace supplying electric energy with DC power supply. There is only one electrode on the top of the DC arc furnace, which is the negative electrode, and the bottom electrode is the positive electrode.
Electric arc furnaces are used to melt scrap steel for steel production. Electrical energy is used to melt scrap steel. An arc forms between the charged material and the electrode. The heat generated by the arc melts the scrap.
Electric arc furnace steel making is a steelmaking method that uses the thermal effect of electric arc to heat the charge for melting.
Ultra-high power electric arc furnace mainly changes the arc characteristics of high voltage and long arc to the arc characteristics of high current, low voltage and short arc
1 ton electric arc furnace is used for melting steel and titanium scrap metal. The principle of electric arc furnace is based on the generation of direct current, which converts electrical energy into heat energy through electrodes to melt the metal.
The closed pig iron furnace (submerged arc furnace iron making) is a non-blast furnace iron making method. Under the premise of guaranteeing the power supply, it is easy to solve the problem by using the reducing agent required by the submerged arc furnace iron making.
The main mechanical device design of Sanui ferroalloy refining furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
The Ferronickel submerged arc furnace is a special submerged arc furnace used for smelting nickel-iron alloy. Its main function is to add nickel ore, carbonaceous reducing agent (such as coke) and limestone and other raw materials into the furnace in a certain proportion
The main mechanical device design of Sanui ferrosilicon furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
The main mechanical device design of Sanui high carbon ferrochrome furnace combines China's national conditions and draws on international advanced technologies such as Demark and Pyremate.
Industrial silicon submerged arc furnace is an important equipment in silicon ore processing, playing a key role in the silicon industry.
The manganese silicon alloy furnace is mainly used to smelt silicon-manganese alloy, which is an alloy containing silicon and manganese.
The design of the submerged arc furnace main mechanical device by Sanui is based on China's national conditions and draws on international advanced technologies such as Demark and Perlmutter.
Submerged electric arc furnace is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent. It mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, etc.
Titanium slag production adopts titanium slag electric furnace (circular furnace and rectangular furnace according to its shape) smelting process.
The LF 20 T ladle refining furnace has the functions of arc heating under normal pressure, argon blowing and stirring at the bottom of the ladle, and reducing slag making in the ladle.
LF ladle refining furnace is a bottom-blown argon ladle furnace with three-phase submerged arc heating under normal pressure. It is a device for refining molten steel in a ladle.
VD vacuum refining furnace is a commonly used refining process equipment, mainly used for deoxidation, impurity removal and other operations of molten steel, so as to obtain high purity, low impurity content of high quality steel.
VOD vacuum refining furnace has multiple functions such as vacuum degassing, oxygen blowing decarburization, vacuum charging, argon blowing stirring, non-vacuum temperature measurement sampling, wire feeding, etc.
The cast steel melting induction furnace has outstanding advantages in heat penetration or melting soft magnetic alloys, high resistance alloys, platinum group alloys, heat-resistant, corrosion-resistant, wear-resistant alloys and pure metals.
Metal silicon smelting furnace is a metal silicon medium frequency melting furnace, which consists of furnace body, water and electricity introduction system, furnace tilting device, etc. It has fast melting temperature rise, easy to control furnace temperature and high production efficiency.
Medium frequency induction furnace mainly used for melting steel, alloy steel, special steel, stainless steel, and can also be used for melting and casting non-ferrous metals such as copper, aluminum, lead, zinc, etc. The customized range of induction furnaces sold by Sanrui ranges from 0.1 tons to 10 tons.
Medium frequency induction furnaces are mainly used for melting steel, alloy steel, special steel, stainless steel, and can also be used for melting and casting non-ferrous metals such as copper, aluminum, lead, and zinc.
Medium frequency aluminum melting furnace is used for melting and heating aluminum, scrap aluminum, aluminum ingots, and aluminum alloys; The melting capacity ranges from 100KG to 3000KG.
An induction furnace is an electric furnace that uses the induction electrothermal effect of the material to heat or melt the material. The main components of an induction furnace are sensors, furnace body, power supply, capacitors and control system.
The 3-ton medium frequency coreless induction furnace adopts a 6-phase 12-pulse double rectifier control system. A 2000KVA special rectifier transformer is used for the 2000KW medium frequency power supply.
The conductive arm of an electric arc furnace (EAF) is primarily composed of the front electrode conductive arm holder, a water-cooled clamping ring, the arm body, and the rear conductive copper plate.
The scrap charging basket of the electric arc furnace is mainly used for loading and conveying raw materials such as scrap steel into the electric arc furnace for smelting.
There are many insulation links between the EAF electrode holder and the conductive cross arm body, which greatly simplifies the cconductive cross arm structure and is a new type of electrode arm on the ultra-high power arc furnace.
Generally, the furnace cover of the electric arc furnace adopts the tubular water-cooled closed tube furnace cover structure.
The electrode lifting mechanism of electric arc furnace is composed of conductive cross arm and electrode column device.
Forged copper tile is one of the main accessories in submerged arc furnace (silicon metal furnace, calcium carbide furnace and iron alloy furnace). It generates heat energy due to passing through large current at high temperature, and is easy to be damaged due to poor working environment.
The furnace cover lifting and rotating device consists of a furnace cover lifting mechanism, a rotating mechanism and a rotating frame.
Submerged arc furnace pressure ring is used to monitor the change of air pressure in the furnace in real time, and adjust the air pressure automatically or manually according to the preset parameters to ensure the stability of air pressure in the furnace
Submerged arc furnace water-cooled Roof is an important part of submerged arc furnace (also known as electric arc furnace, calcium carbide furnace or mining furnace), which is mainly used to close the top of furnace body and bear the high temperature and pressure in the furnace.
Short network bus systems), also known as high current line, refers to the general term of the carrier fluid from the secondary outlet terminal of the transformer to the electrode (including the electrode).
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