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Charcoal electrode specially used in smelting of ferroalloy and preparation method thereof

A technology of ferroalloy and carbon electrodes, which is applied in the field of special carbon electrodes for ferroalloy smelting and its preparation, can solve the problems of threatening the lives of operators, national property safety, electrode paste consumes a lot of energy, and affects people's health, so as to improve the efficiency of electric furnaces, The effect of shortening the smelting time and saving power consumption

Active Publication Date: 2012-02-15
JIZHOU CHANGAN ELECTRODE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The large amount of coal tar pitch contained in the electrode paste will produce a large amount of asphalt fume when it is sintered into an electrode, which will pollute the environment and seriously affect people's health.
On the other hand, when the electrode paste is sintered into a self-baking electrode, a certain amount of heat is required, and electric energy is required to do work, which increases the power consumption by about 5% to 10%. In recent years, with the deepening of national energy conservation and emission reduction work, Enterprises with high energy consumption and high emissions will be gradually eliminated
The electrode paste is also included in the list of eliminated industries due to its high energy consumption and serious environmental pollution; moreover, due to careless operation, it will cause soft breakage and hard breakage of the electrode, which seriously threatens the lives of operators and national property. safety

Method used

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  • Charcoal electrode specially used in smelting of ferroalloy and preparation method thereof
  • Charcoal electrode specially used in smelting of ferroalloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The first step: preparation

[0035] A. Crushing and screening the calcined solid raw material electric calcined coal;

[0036] B. A part of petroleum coke and graphite is crushed and sieved, and a part is pulverized with a ball mill;

[0037] C, start kneading in the kneading pot according to the proportioning of 0.2 parts by weight of carbon black and 0.2 parts by weight of adhesive, take out the paste after the kneading is completed, and press the paste into flakes and blocks on the molding machine, and then Break the flake and block paste, and finally grind the paste into small particles, which is the carbon black secondary material;

[0038] Step 2: Ingredients and Dry Blending

[0039] According to claim 1, the electronic batching system weighs 12 parts by weight of crushed graphite with a particle diameter of 4 mm or less, 12 parts by weight of crushed graphite with a particle diameter greater than 4 mm and less than or equal to 8 mm, and 8 parts by weight with...

Embodiment 2

[0049] The first step: preparation

[0050] A. Crushing and screening the calcined solid raw material electric calcined coal;

[0051] B. A part of petroleum coke and graphite is crushed and sieved, and a part is pulverized with a ball mill;

[0052] C, start kneading in the kneading pot according to the proportioning of 0.5 parts by weight of carbon black and 0.4 parts by weight of adhesive, take out the paste after the kneading is completed, and press the paste into flakes and blocks on the molding machine, and then Break the flake and block paste, and finally grind the paste into small particles, which is the carbon black secondary material;

[0053] Step 2: Ingredients and Dry Blending

[0054] According to claim 1, the electronic batching system weighs 16 parts by weight of crushed graphite with a particle diameter of 4 mm or less, 16 parts by weight of crushed graphite with a particle diameter greater than 4 mm and less than or equal to 8 mm, and 11 parts by weight wit...

Embodiment 3

[0064] The first step: preparation

[0065] A. Crushing and screening the calcined solid raw material electric calcined coal;

[0066] B. A part of petroleum coke and graphite is crushed and sieved, and a part is pulverized with a ball mill;

[0067] C, start kneading in the kneading pot by the proportioning of 0.8 parts by weight of carbon black and 0.6 parts by weight of adhesive, take out the paste after the kneading is completed, and press the paste into flakes and blocks on a molding machine, and then Break the flake and block paste, and finally grind the paste into small particles, which is the carbon black secondary material;

[0068] Step 2: Ingredients and Dry Blending

[0069] According to claim 1, the electronic batching system weighs 20 parts by weight of crushed graphite with a particle size of 4 mm or less, 20 parts by weight of crushed graphite with a particle size greater than 4 mm and less than or equal to 8 mm, and 14 parts by weight with a particle size gr...

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Abstract

The invention, which belongs to the charcoal electrode technology field, discloses a charcoal electrode specially used in smelting of ferroalloy and a preparation method thereof. A main technology is characterized by: screening calcined solid-raw-material electrical calcined coal, petroleum coke, graphite scraps and a secondary material of carbon black; after performing burdening through using anelectronic batching system, entering into a kneading boiler for stirring and drily mixing; then adding coal tar pitch and performing kneading; molding, roasting and machining so as to produce a charcoal electrode specially used in the smelting of ferroalloy. In the charcoal electrode specially used in the smelting of ferroalloy, volatile matter of asphalt does not exist; body density is high; an ash content is low; inoxidability is good. The volatile matter of flue gas given off by roasting during a usage process can be avoided if the charcoal electrode substitutes a self baking electrode. Electricity consumption during roasting the self baking electrode can be saved. Therefore, energy saving and environmental protection can be realized. Installation is simple. Soft breaking accident and hard breaking accident of the electrode caused by careless operation can not be generated so that safety can be substantially raised.

Description

technical field [0001] The invention belongs to the technical field of carbon electrodes, in particular to a special carbon electrode for ferroalloy smelting and a preparation method thereof. Background technique [0002] At present, self-baking electrodes are commonly used in ferroalloy smelting and production. Self-baking electrodes are made of electrode pastes that are heated and sintered during the use of submerged arc furnaces. In recent years, due to the promulgation of the national environmental protection policy and the strengthening of environmental protection management, there are particularly strict requirements on the emission of flue gas. The large amount of coal tar pitch contained in the electrode paste will produce a large amount of pitch fume when sintered into electrodes, which will pollute the environment and seriously affect people's health. On the other hand, when the electrode paste is sintered into a self-baking electrode, a certain amount of heat is ...

Claims

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Application Information

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IPC IPC(8): H05B7/085C04B35/532C04B35/622
Inventor 王广西许谦王兴禄孟双林周全利
Owner JIZHOU CHANGAN ELECTRODE
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