2022/12/29

 

عبد الكريم جاسم
                                                                     Graphite Electrode Factory

A graphite electrode is a type of high-temperature industrial product made from compressed, treated petroleum coke and pitch. They are commonly used in electric arc furnace steel production, as well as  in the production of other alloys such as copper, aluminum, and titanium.  

The production of graphite electrodes begins with the raw materials, which are refined and processed to create the final product. The process starts with the mining and crushing of raw petroleum coke, which is then cleaned and ground into a fine powder. The coke is mixed with pitch, a thick, black, tar-like substance made from coal, and is then pressed and baked at high temperatures to create the finished electrode.

The electrodes are then cut to the desired length and shape, and are inspected for quality and purity. Any defects or impurities are removed, and the electrodes are packaged and shipped to customers around the world.

Overall, the production of graphite electrodes is a highly technical and precise process, requiring specialized equipment and trained personnel to ensure the highest quality and performance of the finished product.



 

عبد الكريم جاسم
عبد الكريم جاسم
                                                          GRAPHITE ELECTRODES
Graphite electrodes are made of high-quality petroleum coke and pitch, which are formed into cylindrical shapes and then baked in an electric furnace to nearly 2,600 degrees Fahrenheit. This process removes any impurities and creates a highly conductive and thermally stable material.

Graphite electrodes are primarily used in electric arc furnace steel production, where they serve as the conductive material to melt scrap steel and alloying elements. They are also used in other industrial processes that require high levels of heat and electrical conductivity, such as in the production of silicon and ferroalloys.

One of the key properties of graphite electrodes is their ability to withstand high temperatures and electrical currents. They can operate at temperatures up to 10,000 degrees Fahrenheit and can conduct electrical currents up to 100,000 amperes. This makes them essential for the production of high-quality steel and other materials.

Graphite electrodes come in various sizes and grades, depending on the specific application and the amount of current that needs to be conducted. They can be as small as a few inches in diameter and a few feet in length, or as large as several feet in diameter and several feet in length. The grade of the electrode is determined by its electrical and thermal properties, as well as its mechanical strength and dimensional stability.

In addition to their use in industrial processes, graphite electrodes have a number of other applications. They are used in the production of lithium-ion batteries, as well as in the manufacturing of graphite products such as crucibles and continuous casting dies. They are also used in the production of water treatment chemicals and other specialty chemicals.

Overall, graphite electrodes are a vital component in a variety of industrial processes and applications, and their unique properties make them an essential material for high-temperature and high-current applications.R


2022/12/26

                                                                 GRAPHITE ELECTRODS

                                                                                                                                     Introduction        
Are you looking for a reliable and long-lasting relationship? Look no further than graphite electrodeGraphite Electrodes - Your secret to a long lasting relationships! With a surprisingly long life of 20 years or more, graphite electrodes have been used in industrial applications since the 19th century, making them the perfect choice for those seeking a durable, cost-effective solution. Read on to learn more about the properties of graphite electrodes and how they can help you achieve your desired results.

                                                                                                    History of graphite electrodes   
Graphite electrodes have a long and fascinating history. They have been used in various applications since the 19th century, but were not widely manufactured until the early 20th century. In the early days, graphite was produced from naturally occurring deposits, but later on artificial graphite was developed for use in industrial applications.
The first use of graphite electrodes was for arc lamps in the 1800s, which were large electrical systems that required electrodes to provide a path for electricity to flow. This type of electrode was also used for telegraphy and telephony in the late 19th century. By the early 20th century, graphite electrodes were being used for a variety of industrial applications such as steel production, welding, soldering and forging. 
Graphite electrodes are still widely used today, and they have been improved over time to offer greater performance and durability. The popularity of these electrodes is due to their low cost and long life, which can exceed 20 years in standard industrial applications. Graphite electrodes are now commonly used in industries such as metallurgy, construction, automotive, mining, power generation and chemical production. Their increased application has resulted in them becoming more efficient and durable. As a result, they have become increasingly popular among industrial consumers. For example, electric arcs powered by graphite electrodes are often used in welding processes to fuse metal parts together. Additionally, graphite electrodes may be used to create permanent magnets, produce pigments for paint or ceramic glazes, or manufacture grinding media for cement plants. Furthermore, graphite electrodes are even capable of holding an electric current at temperatures above 3000 °C (5400 °F), making them invaluable for certain manufacturing processes where extreme heat resistance is necessary. Lastly, graphite electrodes are environmentally friendly and don’t require hazardous chemicals or materials during manufacturing or when disposing of them after use. With all these benefits, it’s no wonder why so many people choose to invest in graphite electrodes for their businesses
                                                                                                                              
                                                                                                                          How they work
Graphite electrodes are composed of nearly pure carbon. This allows them to be highly conductive, allowing electricity to pass through easily. Graphite electrodes are usually constructed in a cylindrical shape, allowing for a uniform current throughout the electrode. In order for graphite electrodes to work effectively, they need to be properly maintained and serviced regularly. 
The electrodes are subjected to high temperatures during operation and must be able to withstand these temperatures while providing the required electrical current. To ensure this, graphite electrodes have a specially designed coating on the surface which serves as a protective layer against extreme heat. 
Graphite electrodes are connected to an external power source and their performance is regulated by adjusting the voltage and amperage accordingly. The shape and size of the electrode will determine the current capacity of the electrode and, thus, the amount of power that can be transferred. The electrodes also need to be periodically cleaned to prevent any build-up of residue which can potentially reduce their performance.

                                                                                                                                       Advantages
Graphite electrodes offer a number of advantages for industrial applications. They are reliable and relatively inexpensive, meaning they can save you money in the long run. They also have an impressive life span, with the average graphite electrode lasting up to 20 years. This makes them a great choice for applications where durability is needed. Additionally, graphite electrodes are heat resistant, meaning they can handle high temperatures. Finally, graphite electrodes are very easy to install and maintain, making them a great option for many different applications.

                                                                                                                                 Disadvantages
Despite their many advantages, graphite electrodes also have some drawbacks. They are relatively fragile and can be easily damaged if mishandled during installation. They also require a great deal of maintenance as they can become easily clogged with impurities from the application's environment. The electrodes must be frequently monitored and cleaned to ensure optimal performance. Finally, graphite electrodes are prone to thermal shock which can cause cracking or spalling. This can affect the integrity of the electrode over time.

                                                                                                                                  Applications
Graphite electrodes are used in a variety of industries and applications. They are used in the steelmaking process as well as aluminum production. They can be found in electric arc furnaces and ladles, providing a high temperature source of heat. Graphite electrodes can also be used for smelting operations, including gold and silver, as well as refining copper and nickel. 
They can also be used for cutting and welding applications, due to their low electrical resistance. This is especially true when using high current levels such as those found in plasma cutting systems. 
Graphite electrodes are used in the power industry, including nuclear power plants. Their heat conduction properties make them ideal for this use. They are also widely used in electrode boilers, which produce steam from water by passing an electric current through the water.
In the chemical industry, graphite electrodes are used for electrolysis processes, such as producing chlorine and sodium hydroxide. This is done by passing an electric current through a solution containing the electrolyte. 
Graphite electrodes are also used in the automotive industry for EDM (electrical discharge machining). This is a process where a spark of electricity is used to create a controlled burn on a metal surface to create precision shapes or patterns. 

Overall, graphite electrodes are versatile and reliable. They are easy to work with, offer a long life expectancy, and can be used in a wide range of industries and applications.

2022/12/11

 Carbon

Carbon is the chemical element with symbol C and atomic number 6. It has an atomic mass of

 12.0107, which means that each carbon atom has a mass of about 12 atomic mass units. Carbon is a

 nonmetal, meaning that it does not react with water or dissolve in acids.[1] The air we breathe out

 contains about 4% carbon dioxide by weight. The United States Environmental Protection Agency

 estimates that human activity including the burning of fossil fuels, agriculture, and deforestation

 has resulted in over 550 billion metric tons of carbon being released as carbon dioxide into the

 atmosphere since the mid-1850s.[2] Carbon is a necessary part of life on Earth. It exists in all living

things. The average adult human body contains about 18 to 20 pounds (8 to 9 kilograms) of carbon.

[1] Carbon is also present in all organic compounds in trace amounts (less than 0.04%).

 

Graphite Electrodes

Graphite electrodes are reliable and inexpensive. They have a surprisingly long life, about 20 years for


 standard industrial applications. Graphite electrodes date back to the 19th century but were not commonly manufactured until the early 20th century.


Graphite is an abundant mineral that can be used to produce many different things, like pencils and heat conduction elements in electrical equipment. Its even naturally found in nature as a black sand beach sand (commonly called "black sand").


Graphite is mined in three different ways: a) Surface Mining, b) Underground Mining, and c) Strip Mining. 

Surface mining occurs when the graphite is on or near the surface. It is commonly cleaned by using water or air to wash away the dirt, clay, and sand. The graphite can then be extracted by hand or heavy machinery.

Graphite deposits can also be found underground through excavating into the earth called "underground mining". electrodes are manufactueed from coke


2020/03/15

شرح الكتاب المقرر للرياضيات للسادس الابتدائي الفصل الخامس النسبه والتناسب
( ٥-٢) التناسب
التناسب هو تساوي نسبتين وهو نوع آخر من التطبيقات على الكسور 
فإذا قمنا بإجراء مقارنه بين النسبتين  ٢٠/٨    ١٠/٤ نجدهما متساويين بعد قسمه بسط ومقام ٢٠/٨على ٢ أي ان
٢٠/٨ = ١٠/٤  ، كذلك يسمى العددان ١٠، ٨ طرفي التناسب وان ٨×١٠=٨٠ ويسمى العددان ٢٠،٤ وسطي التناسب وان        ٢٠×٤ =٨٠  ، اي ان ١٠×٨ = ٢٠×٤ ومن هنا نستنتج أن
في كل تناسب يكون : حاصل ضرب الطرفين يساوي حاصل ضرب الوسطين . ارجو الاشتراك والمتابعة لدروس أخرى مع الشكر .

شرح الفصل الخامس من الكتاب المدرسي المقرر للصف السادس الابتدائي

الفصل الخامس
النسبه والتناسب
(٥-١) النسبه
النسبه هي مقارنه بين كميتين لهما نفس النوع ووحدة القياس.
وهي إحدى التطبيقات على الكسور وتستخدم للمقارنة بين الجزء الى الكل أو جزء إلى جزء 
٢٠/٧ يمكن أن تكتب بالشكل ٧: ٢٠ وتقرأ ٧ إلى ٢٠
كذلك تستخدم النسبه للمقارنة بين كميتين لهما نفس وحدة القياس  مثلا عمر احمد ١٠ سنوات وعمر والده ٤٠ سنه فإن نسبة عمر احمد إلى عمر والده هو ٤٠/١٠ (١٠ على ٤٠) ويمكن كذلك ان تكتب ٤٠:١٠
 النسبه ليس لها وحدة قياس مثلا ٨:١
لذا عند مقارنة كميتين يجب التأكد اولا أنهما من نفس الوحدة  مثال: ما نسبة ٣ سنه إلى ١٢ شهر 
الجواب: ٣سنه ×١٢ شهر=٣٦ شهر 
اذن:النسبه ٣٦ / ١٢ (٣٦على١٢) =٣ /١