Comprehensive chemical and physical treatment method of serpentine

Abstract

The invention belongs to the technical field of comprehensive utilization of chemistry and chemical engineering of mineral resources and provides a comprehensive chemical and physical treatment method of serpentine for solving the problems of the existing serpentine treatment process of complicated manufacturing process, poor product quality, low utilization rate of effective components and great raw material consumption. The method comprises the following steps: crushing serpentine; by using calcium fluoride as an activating agent and using lauryl sodium sulfate as a catalyst, treating serpentine powder by using concentrated sulfuric acid, and reacting to generate a gas, liquid and a solid precipitate; ammonifying the gas to generate gas phase white carbon black, further separating the liquid, removing impurities, adding ammonia water to precipitate magnesium, precipitating and roasting to decompose to obtain active magnesium oxide, and crystallizing the solution to produce an ammonia sulfate chemical fertilizer. The serpentine is prepared into three main products, namely gas phase white carbon black, active magnesium oxide and the ammonia sulfate fertilizer, two byproducts, namely gypsum and solid phase iron as well as a kind of metal slag, no waste is produced, the serpentine is developed to the uttermost, and final development products are obtained to the uttermost. The raw materials are fully utilized, and the original components are converted into products with high added values.

Description

technical field [0001] The invention belongs to the technical field of chemical and chemical comprehensive utilization of mineral resources, and in particular relates to a comprehensive chemical and physical treatment method for serpentine. Background technique [0002] Serpentine is a general term for hydrous magnesium-rich silicate minerals, such as antigorite, lizardite, and chrysotile. Their color is generally green, but also light gray, white or yellow. Because they are often green and green like snake skin, hence the name. The structure of serpentine often has curls, like fibers. Such serpentine is often used as asbestos. Both massive and fibrous serpentine are lustrous, massive like wax and fibrous like silk. [0003] Serpentine is a mineral aggregate whose main components are serpentine minerals. Serpentine minerals mainly include chrysotile, scale serpentine and antigorite. They are all magnesium phyllosilicate minerals containing OH, and the general chemical ...

AI Technical Summary

Problems solved by technology

[0017] In order to solve the problems of the existing serpentine treatment process complicated, poor product quality, low utilization rate of active ...