Process and device for preparing gas-phase white carbon black and recycling metal by taking industrial waste residues containing silicate as raw materials

Abstract

The invention provides a process for preparing gas-phase white carbon black at a low temperature and recycling metal by taking industrial waste residues containing silicate as raw materials. In the process, wastes including the industrial waste residues 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 the metal is 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 and recovering metal by using industrial waste residue containing silicates as raw materials, belonging to the technical fields of chemical purification and environmental protection. Background technique [0002] Since the reform and opening up, while my country has made great progress in science and technology, it has also achieved rapid economic development; specifically, it has also achieved rapid development in mining, metal smelting, coal-fired power plants, chemicals, and building materials; At the same time, in the process of industrial development, a large amount of industrial waste residues are also discharged: such as: copper slag, magnesium slag, nickel slag, aluminum sulfate slag, lithium slag, blast furnace slag, ferroalloy slag, lead-zinc slag, granulated circuit phosphorus slag, etc.; There are non-metallic ore waste residues: such as kaolin, ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a production process and device for preparing fumed white carbon black and recovering metal by using industrial waste residue containing silicates as raw materials; it successfully avoids the use of hydrogen and gas in the current fumed white carbon black process. The process of oxygen and high-temperature hydrolysis also solves the problem that the current industrial waste residue 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.

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