Basic principle of 1 ferroalloy smelting
1. 1 the essence of ferroalloy smelting
The extensive application of 1.2 selective reduction theory in ferroalloys
1.2. 1 Relationship between selective reduction and ferroalloy production
1.2.2 Example of selective reduction calculation
1.3 Selection of reducing agent based on oxide free energy of formation and temperature diagram.
1.3. 1 carbonaceous reductant and its characteristics
1.3.2 metal reducing agent
1.3.3 oxidation refining is a new concept in ferroalloy smelting.
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2 electrodes and furnace lining
2. 1 electrode
2. Classification, performance and application of1.1covered electrode.
2. 1.2 Fabrication of self-baking electrode
2. 1.3 sintering of self-baking electrode
2. 1.4 expansion and contraction of self-baking electrode
2. 1.5 Common accidents of self-baking electrode and their treatment
2. 1.6 electrode consumption
2.2 electric furnace lining
2.2. 1 Types, requirements and selection of refractory materials
2.2.2 lining masonry
2.2.3 Ferroalloy electric furnace baking, furnace opening, furnace stopping and furnace washing.
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3 Ferroalloy Workshop and Main Equipment
3. 1 Overview of Ferroalloy Workshop
3. 1. 1 Layout and transportation of ferroalloy plant
3. 1.2 Determination of production scale
3. 1.3 Workshop composition and layout
3. 1.4 Layout of refining furnace workshop
3. 1.5 technical and economic indicators of ferroalloy production
3.2 submerged arc furnace machinery and equipment
3.2. 1 Overview of submerged arc furnace
furnace body
3.2.3 Electrode system
hydraulic pressure system
3.2.5 Smoke exhaust hood and ventilation device
3.3 Submerged arc furnace power supply system
3.3. 1 power supply system
3.3.2 Submerged arc furnace transformer
3.3.3 Short net
3.4 Electrical Control of Ferroalloy Electric Furnace
3.4. 1 automatic power control
3.4.2 Power demand control in the factory
3.4.3 Automatic control of electrode pressure and discharge
Adjustment of electric furnace power
3.4.5 electrode depth control
3.4.6 Feeding control and weighing control
Process computer control
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Electric heating principle and basic parameters of submerged arc furnace
4. 1 Arc phenomenon in submerged arc furnace
4. 1. 1 arc generation mechanism
4. 1.2 arc characteristics
4. 1.3 arc heat transfer process
4.2 Circuit analysis of submerged arc furnace
4.2. 1 furnace current loop
4.2.2 Electric furnace running resistance
4.2.3 Reactance and harmonics of electric furnace
4.2.4 Interaction of Electric Furnace Current
4.3 Electrical characteristics of submerged arc furnace
4.3. 1 Current chart
4.3.2 Electric furnace characteristic curve under specific voltage level
4.3.3 Characteristic curve group and constant resistance curve
4.3.4 The power of each phase of three-phase electric furnace is unbalanced.
4.3.5 Monitoring and prevention of power imbalance
4.3.6 Economic operation of electric furnace
4.4 Parameter Calculation and Selection of Ferroalloy Electric Furnace
4.4. 1 Simple calculation method of electric furnace parameters
4.4.2 Calculation program of large electric furnace
4.4.3 Calculation Program Example Solution
4.4.4 Analysis Example of Electric Furnace Full Circuit
4.4.5 Drawing of Electric Furnace Characteristic Curve
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Melting of 5 Si-based alloy
5. Brand and use of1ferrosilicon
5.2 Physical and chemical properties of silicon and its compounds
5.3 Raw materials for smelting ferrosilicon
5.3. 1 silica
reductant
Black raw materials
5.4 ferrosilicon smelting principle
5.4. 1 Basic reaction of ferrosilicon smelting
5.4.2 Temperature region and reaction conditions in the furnace
5.5 ferrosilicon smelting process and treatment of abnormal furnace conditions
5.6 Material Balance and Thermal Balance of Smelting Silicon 75
5.6. 1 cost calculation
material balance
Calculation of heat balance
Simple batching calculation
5.7 Ferrosilicon Refining
Oxidation refining of synthetic slag
5.7.2 Chlorination refining method
5.8 Silicon-calcium alloy
5.8. Brand and use of1calcium-silicon alloy
5.8.2 Physical and chemical properties of calcium and its compounds
5.8.3 Production methods and raw materials
5.8.4 Physical and chemical reactions in smelting process
Smelting process
5.9 industrial silicon
5.9. 1 Brand and use of industrial silicon
5.9.2 Raw materials for producing industrial silicon
Melting principle
Smelting process
5.9.5 Calculation of Industrial Silicon Production Ingredients
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6 smelting of manganese alloy
6. 1 brand and use of ferromanganese
6.2 Physical and chemical properties of manganese and its compounds
6.2. Main physical and chemical properties of1manganese
6.2.2 Characteristics of Manganese Compounds
6.3 manganese ore
6.4 Smelting of High Carbon Ferromanganese
6.4. 1 Tempering method
raw material
6.4.3 Melting principle
6.4.4) Primary refining process
mixture calculation
6.5 smelting of manganese-silicon alloy
6.5. 1 raw materials
Melting principle
Smelting process
mixture calculation
6.6 Smelting of Medium and Low Carbon Ferromanganese
6.6. 1 Electrosilicothermic Melting of Medium and Low Carbon Ferromanganese
6.6.2 Calculation of burden for producing medium-carbon ferromanganese by silicothermic method
6.6.3 Smelting low-carbon ferromanganese by ladle method and oxygen blowing method.
6.7 Metal Manganese
6.7. 1 melting principle
6.7.2 Production method
6.7.3 Smelting of Manganese Metal
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7 smelting of chromium alloy
7. 1 overview
7.2 high carbon ferrochromium
7.2. Brand and application of1high carbon ferrochromium
7.2.2 Physical and chemical properties of chromium and its compounds
7.2.3 Smelting Process and Principle of High Carbon Ferrochrome
7.3 Silicon-chromium alloy
7.3. 1 brand and use of silicon-chromium alloy
7.3.2 Properties of Si-Cr alloy
7.3.3 Smelting process and principle of Si-Cr alloy
7.4 Medium and Low Carbon Ferrochrome
……
8 ferromolybdenum smelting
9 ferrotitanium smelting
Smelting of 10 ferrovanadium
1 1 ferrotungsten smelting
Smelting of 12 rare earth ferroalloy
13 environmental protection and comprehensive utilization
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