Abstract
During coal coking process a great deal of sulfurs are produced and are discarded to surroundings, which makes a lot of lands to be occupied and puts the environment to be polluted. In order to find multi-win production mode of coal coking for resources, surroundings and societies, carbon disulfide as an extracting agent was applied to extract sulfur from sulfur cake in this study. Final laboratory technological condition was that more than 98% sulfur yield could be gotten when the granularity of raw sulfur powder, liquid-solid ratio, extraction temperature, stirring velocity and stirring time respectively were 200 mesh, 3:1 g/g, 40°C, 200rpm and 30 min.
Highlights
Coal as an important natural resource still plays its irreplaceable role in 21st Century, especially in those countries such as China, in which coal resources is relatively abundant [1,2]
The associated elemental sulfur is generated simultaneously while high quality coke is produced [6,7,8]. These sulfurs mostly exist in the form of a mixture of sulfur formation and are discarded to environments. This disposal method occupies a lot of lands and pollutes the surroundings, and it brings a huge waste of derived resources
As we know sulfur is an important raw material for the chemical, food, medicine and other industries [9,10,11], there are a great deal of market demand in each year [12,13]
Summary
Coal as an important natural resource still plays its irreplaceable role in 21st Century, especially in those countries such as China, in which coal resources is relatively abundant [1,2]. The associated elemental sulfur is generated simultaneously while high quality coke is produced [6,7,8] These sulfurs mostly exist in the form of a mixture of sulfur formation and are discarded to environments. As we know sulfur is an important raw material for the chemical, food, medicine and other industries [9,10,11], there are a great deal of market demand in each year [12,13] If these sulfurs can be recycled, it will have a positive effect on our environments, and the production chain of coal coking industry will be extended and the comprehensive utilization value of coal resources will be promoted, which will bring important economic significance to our societies. Extraction, the rest of sulfur recovery way [18], will become a method used to decrease energy consumption under environmental protection with closed cycle of solvent and to get optimized harvest for eligible sulfur product in this work because relevant investigation for those sulfurs extraction from coal coking waste isn’t reported so far
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