The average amount of carbon in anthracite coal is about 62 weight percent. It is characterized by a high degree of compressive strength as well as a low thermal conductivity. Its high mechanical and compressive strength makes it an ideal refractory. Calcination increases its resistance to corrosion. Anthracite that has been electrically calcined, also known as ECA, is best used for refractory purposes.
In the process of calcining, anthracite reaches temperatures as high as 2000 degrees Celsius. This removes all volatile material from coal. Additionally, it improves density, antioxidation, mechanical strength and electrical conductivity. ECA can be used for manufacturing carbon blocks, electrodes, and cathode anodes in the aluminum industry. It can also be used in the steel industry for producing prebaked electrodes and ramming pastes.
Segmenting the global anthracite calcined market by application, product and geography is possible. Markets can be classified based on the product. These include gas calcined, as well as electrically calcined, anthracite. Electric calcination offers a significant efficiency advantage and is similar to conventional gas calcination. According to estimates, electrical calcination processes will have the biggest share on the market within the next few years.
Calcined coal can be manufactured from various raw materials. They include brown, low-sulfur or high-carbon. It is a common carbon additive for the steel industry and has a high carbon content, low ash, and sulfur contents, and excellent mechanical properties. Due to its low rate of oxidation, it is also used in aluminum smelting. This material comes in many shapes, grades and sizes.
Many companies manufacture anthracite materials. RHEINFELDEN GERMANY, Zhengzhou Xinhua Raw Materials Technology Co., Ltd, Hebei Shengsa Carbon Manufacture Trading Co., Ltd, Gansu Yuanda New Resources Co., Ltd, etc. are all involved. They are using their market presence to establish partnerships with mining companies that produce anthracite in order to guarantee a steady supply of raw material.
Global calcined-anthracite production is projected to increase by 2.2% between 2019 and 2028. Demand for calcined material is rising, especially China and India. Globally, the decline of coal production is hindering this industry's growth. Environmental concerns may also limit growth. To ensure that they have a consistent supply of materials, small scale producers look to form partnerships with the anthracite-mining companies.
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