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Majid Vafaei, director of the Iranian Mineral Processing Research Center, stated: "This center, in collaboration with the University of Tehran, implemented a feasibility study to identify and remove sulfur with the aim of increasing recovery and reducing ash of the final product in the Coal Region of Tabas Prodeh.
He added: The researchers of this project were able to produce coal concentrate with about 5% ash and 1% sulfur by using a set of physical methods (heavy mediator), physical and chemical (flotation) and chemical method (meyer).
Referring to the need of the steel industry (by long furnace method) to consume less than 10% ash and sulfur below 1% for coke production, the director of The Iranian Mineral Processing Research Center said: Coal concentrate produced by processing plants has 10% ash and sulfur 1.5 to 2% which is harmful to steel production. Therefore, now in the country, to solve the problem of this type of impurity, the coal concentrate produced is mixed with imported coal concentrate with low sulfur level so that the total sulfur concentrate of the resulting concentrate reaches about 1 percent.
At the end, vafaeifard pointed out the possibility of developing research and industrialization of sulfur identification and removal plan, noted: With the implementation of this plan in coal processing plants, the possibility of extracting concentrate production with low amount of ash and sulfur will be possible and the needs of steel mills will be met by long furnace method in the country. The move will prevent coal concentrate from importing from abroad and prevent foreign currency from leaving.
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