Coal tar needle coke
Thread Content
As the production of steel using ultra-high power electric furnaces develops, it inevitably leads to an increase in the production of ultra-high power electrodes, and needle coke serves as the aggregate for such electrodes. Pinacol coke has the advantages of anisotropy, a low thermal expansion coefficient, a low specific resistance, and low impurity content. Therefore, ultra-high power electrodes made from needle coke necessarily possess advantages such as low resistivity, low thermal expansion coefficient, high resistance to thermal shock and mechanical strength, good oxidation resistance, and low consumption. Compared with conventional electrode steelmaking, the smelting time can be reduced by one-third, electricity consumption per ton of steel can be cut in half, and production capacity can increase by 1.3 times. Asphalt needle coke is a high-tech, high-value product resulting from the advanced processing of coal tar pitch; its value is 2–3 times that of ordinary asphalt delayed coking coke. The international market price ranges from 1,400 to 1,500 dollars per ton, and production is monopolized by only a few countries such as the United States and Japan. China’s annual demand of 70,000–100,000 tons must be met through imports, so the market prospects and economic benefits for needle coke are even more promising.
The production process is quite difficult, and the technology is not yet mature. At present, only Hongte in China is capable of carrying out production on a regular basis
Hongte’s needle coke is already at the forefront in China; by continuing to improve the production processes, it will gradually become more mature. I heard that the ten-thousand-ton needle coke plant developed by the Thermal Energy Institute in collaboration with Sinosteel is about to go into operation soon.
The thermal energy project was supposed to go into operation last year, but now it is said that it will not be operational until June this year.
The equipment has not yet been fully installed, and the trial results of its electrodes were not satisfactory; there are issues such as fractures, high wear rate, and thermal shock loads
Expand the carbon production capacity by building a new plant with an annual capacity of 50,000 tons; it was put into operation in 2010
What process is used for the amplified carbon pretreatment?
What process route should be used to build a new 50,000-ton/year carbon expansion plant? Should it be the same as that used by Hongte, or the same as that used by the Thermal Energy Research Institute?
Anshan Thermal Energy Institute is a unit under China Iron and Steel Group. Their needle coke project is perhaps the most technologically advanced in the country.
Fangda’s preprocessing method is likely to be a modification approach (just a guess). Fangda does have considerable capabilities, but its current strengths lie elsewhere; by focusing on things that are not important and following trends blindly, it may fail to do well in its main business, and its side businesses will suffer even more as a result