He postulated that the carbon reacts initially with the sulfate to form calciumsulfide.
他认为碳最初和硫酸钙反应生成硫化钙。
2
This invention relates to a novel method for producing calciumsulfide from phosphogypsum or other gypsum.
本发明涉及一种用磷石膏或其它石膏生产硫化钙的新方法。
3
The high combustion temperatures melt together the coal ash (largely silica and alumna) and calciumsulfide solids to form an inert slag that drains from the bottom of the boiler.