Process and device for preparing gas-phase white carbon black by taking quartziferous fluorite tailings as raw materials

Abstract

The invention provides a process for preparing gas-phase white carbon black at a low temperature by taking quartziferous fluorite tailings as raw materials. In the process, wastes including the quartziferous fluorite tailings and the like are used as the raw materials and are reacted with fluorine-containing acid liquid, hydrochloric acid and nitric acid to prepare the product gas-phase white carbon black with a high additional value and high-valence metal and fluorite powder are recycled; in the prepared product, the content of SiO2 is more than 99.9 percent and the specific surface area measured by a multi-point BET method is: 350m<2> / g to 500m<2> / g, so that the effect of changing wastes into valuable things is realized; after acidic gas generated in the preparation process is absorbed by a negative-pressure water absorption tank, corresponding acid liquid can be prepared; when the acid liquid is concentrated to a certain concentration, the acid liquid can be circularly utilized. Meanwhile, the invention further provides a production device used for the process; all parts of the production device are common devices in chemical plants and the cost is low, so that large-scale industrial production can be realized.

Description

technical field [0001] The invention relates to a process method and a device for preparing gas-phase white carbon black by utilizing quartz fluorite tailings, belonging to the technical fields of chemical purification and environmental protection. Background technique [0002] Fluorite ore is one of the important non-metallic mineral strategic resources in my country. It is mainly used in fluorine chemical industry and fluorine material industry. After mining, fluorite ore must be processed and purified before it can be used in the fluorine chemical industry and fluorine material industry. In the process of mineral processing and purification, a large amount of tailings are often produced. The stacking of tailings takes up a lot of land, which destroys the ecology. The environment has become a serious disaster hazard. Therefore, if we can scientifically develop and utilize quartz fluorite tailings resources, we can not only save a lot of land resources, beautify our produc...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a production process and device for preparing fumed white carbon black with quartz fluorite tailings as raw material; it successfully avoids the process of using hydrogen and oxygen and high-temperature hydrolysis in the current preparation process of fumed white carbon black The process also solves the problem that the current quartz fluorite tailings cannot be efficiently utilized. The present invention also provides a new process technology and production device that can produce gas-phase silica products under normal temperature and pressure.

Images