| 论文简介 |
Abstract
China is the largest producer and consumer of calcium carbide in the world. The calcium carbide industry is an indispensa ble industry to support the basic life of people. The huge production capacity of calcium carbide is accompanied by a large
number of solid waste carbide slag. Due to the immature treatment technology of carbide slag, a large number of carbide
slag are stacked on-site, resulting in land occupation, air-drying, easy take-of ash, and pollution of the environment and
water resources. In China, calcium carbide is mainly used to produce acetylene and further utilized, 80% of which is used to
produce polyvinyl chloride (PVC). A large amount of carbide slag is not used, while only a small part is used in the traditional building materials industry, fue gas desulfurization, sewage treatment, etc., however, the economic benefts are poor.
Therefore, converting the solid waste carbide slag produced by the calcium carbide industry into high value-added CaCO3,
CaCl2, CaSO4 whiskers, etc. has become a potential way to expand the development feld of the calcium carbide industry
and is environmentally friendly. This paper focuses on summarizing the traditional and emerging high value-added utilization technologies of carbide slag, and then introduces the application research of carbide slag in carbon emission reduction.
Finally, the defects of these technologies are summarized and further research directions are prospected. This study provides
basic guidance for the diversifed development of efcient resource utilization of carbide slag. |
(创新港)
