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Address: Xiaobeiqu Community, Chengyang Street, Chengyang District, Qingdao, Shandong, China
Contact person: Fujun Pei
Contact phone: +86-532-88732781
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Graphite Anode Plate, Graphite Cathode Carbon Block, Graphite Electrode Use And The Difference

1. the use of graphite anode

       In  the electrolytic cell, the current flowing into the electrolyte from  here is called the graphite anode plate, the

electrolysis industry, the  anode is generally made into a plate, so called the graphite anode  plate, widely used in electric

crossing, waste water treatment,  industrial anti-corrosion equipment Or for special materials.

       In  the electrolysis industry, the use of graphite anode plate as an anode  has been a hundred years of history, the

anode is made of metal in  recent decades, China's metal anode research and application later, the  seventies of last century

(2%) low silver (0.5%), namely, lead silver alloy, lead silver tin antimony alloy, lead calcium alloy, lead (lead), and lead Silver

plus nucleating agent alloy and other stages.

Compared  with other materials, graphite anode plate has the advantages of high  temperature resistance, good thermal

conductivity, easy machining, good  chemical stability, acid and alkali corrosion, low ash content; for  electrolysis of aqueous

solution, the preparation of chlorine, caustic,  electrolysis Salt  solution; for example, the use of graphite anode plate can be

used as  electrolytic salt solution to produce caustic soda conductive anode. Application of graphite anode plate can be used

as electroplating  industry conductive anode, is used for a variety of electroplating ideal  material; plating products with

smooth, delicate, wear, corrosion  resistance, high brightness, easy to change color and so on.


2. the use of graphite cathode carbon

        To high quality anthracite, coke, graphite and other raw materials made of carbon block. Used as the cathode for

aluminum electrolytic cells. It is masonry at the bottom of the cell, also known as the bottom of the carbon block.

Characteristics of the cathode carbon block from the conductive and constitute a dual role in the electrolytic cell liner.

Aluminum electrolytic production requirements of the cathode carbon block has high temperature. Resistant to salt corrosion

and conductivity, good thermal  conductivity and high mechanical strength, good thermal shock resistance  and strong

anti-sodium erosion and other characteristics, which is  conducive to the production of aluminum electrolytic energy and tank

 life to improve.

       The  type of cathode carbon block According to the quality requirements of  the products, the choice of raw materials

and the use of process  conditions, the Chinese cathode carbon block is divided into ordinary  cathode carbon block,

semi-graphite carbon block and graphite carbon  block 3 categories. Ordinary cathode carbon block to 1250 ~ 1350 ℃

calcined anthracite as the main raw material. Semi-graphite carbon block according to the production process is divided into

two different.

       One  is to high-quality high-temperature electric calcination anthracite or,  with more graphite fragments or even all with

graphite fragments as  aggregate, after forming the green products only after roasting  (calcination temperature does not

exceed 1200 ℃) no longer into the  graphitization Furnace heat treatment, this carbon block called semi-graphite carbon

block.

       Another  kind of easy to graphitize the coke as aggregate, raw products roasted  into the graphitization furnace at 1800

~ 2000 ℃ temperature heat  treatment, this carbon block called semi-graphite (carbonized) block. The former strength, high

hardness, the latter's conductive properties and the overall effect is better. Graphite charcoal block, easy to graphite coke as

raw material, the graphitization temperature should reach about 2500 ℃.

Semi-graphite  carbon block and graphite carbon block is the difference between the  degree of orderly arrangement of

products, that is, the degree of  different graphitization. You can use the size of the product resistivity to indicate the level of

the degree of graphitization. The  lattice of the graphite charcoal block is completely in the order of  arrangement, the

resistivity is less than 15μΩ? M; the semi-graphite  carbon block has a low degree of graphitization or only partial

 graphitization with a resistivity of 15 to 45? In  the process of performance for the heat treatment temperature,  semi-graphite

carbon block heat treatment maximum temperature of about  2000 ℃, graphite carbon block of the graphitization temperature

of 2500 ~  2800 ℃. Ordinary cathode carbon block, resistivity 50 ~ 60μΩm.

        The  graphitized cathode is the conductive material used in the cathode of  the aluminum electrolytic cell, representing

the development direction  of the electrolytic aluminum industry. With  the electrolytic aluminum industry, technological

progress and  development of electrolytic cell to more than 300KVA large capacity  direction, the higher requirements of the

cathode material. The  main advantage of graphitizing cathode is to strengthen the current,  improve the current efficiency, to

achieve the purpose of increasing  production and energy saving, and make the electrolytic cell running  stable, the greater

the better the stability of the groove, the more  obvious the current efficiency, the use of graphite cathode aluminum Unit

capacity increased by 10-15%, tons of aluminum energy saving more than 600KWh. Graphite cathode aluminum electrolytic

cell due to energy saving and  emission reduction effect is obvious, is the country in the electrolytic  aluminum industry to

promote the development of one of the materials.


3.the use of graphite electrodes

       Graphite  electrode, mainly in petroleum coke, needle coke as raw material, coal  tar pitch as binder, calcined,

ingredients, mixed kneading, pressure,  roasting, graphitization, machining and made in the arc furnace in the  form of arc

release The  electric energy is used to heat and melt the charge of the conductor,  mainly used in electric furnace

steelmaking, according to its quality  indicators can be divided into ordinary power, high power and ultra high  power.

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