Reaction, separation, washing, evaporation and drying integrated device and method

Abstract

The invention provides a reaction, separation, washing, evaporation and drying integrated device and method and belongs to the field of hydrometallurgy and the chemical industry. The device is mainly composed of unit partition chambers and accessory equipment. The partition chambers are connected through partition plates with holes, and according to different process combinations of the leaching reaction process, the separation and washing process, the crystallization and drying process and the like and different treatment objects, specific filtering films are selected and used for the partition plates with the holes, and upper sealing rings and lower sealing rings are arranged to seal the partition chambers. According to the different treatment objects, certain process procedures of the leaching reaction process, the separation and washing process and the crystallization and drying process are finished continuously in the partition chambers. By the adoption of the high-diameter high-ratio independent partition chamber space, control over the pressure, the temperature, the stirring speed and other reaction conditions is facilitated; and by the adoption of stirring scrapper devices with holes, the high-solid-liquid-ratio solid-liquid phase reaction and the high-concentration liquid phase reaction are easy to accelerate, and the mass transfer rate is increased. By the adoption of the method, adaptability to the procedures and treatment capacity is high, energy, water and chemicals can be used in a cyclic manner, cleanness and environment friendliness are achieved, and operation is convenient.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy and chemical industry, and relates to a high solid-liquid ratio solid-liquid two-phase, or high-concentration liquid phase leaching reaction, separation and washing, crystallization and drying in an integrated device and method. The device is mainly composed of a main device and an auxiliary device. The compartments are unitized, and the number of compartments is set according to the processing capacity. Compartment space with high diameter-to-height ratio, stirring scraper with holes is easy to accelerate solid-liquid two-phase with high solid-liquid ratio, and high-concentration liquid phase reaction and improve mass transfer efficiency, and the independent space is easy to pressure, temperature, stirring rate According to the different processing objects, several processes in the process of reaction, separation, washing, evaporation, crystallization and drying can be completed continuously and stab...

AI Technical Summary

Problems solved by technology

However, the washing method is dense washing, and a large amount of unreacted and complete residual acid still remains in the underflow solid phase, so the residual acid must be washed by increasing the number of washings. The leaching reaction and dense washing are carried out in different equipment, which increases the equipment cost. The equipment occupies a large area and is cumbersome to operate, and the above devices do not involve the technical fields of evaporation, crystallization and drying, and the reaction is limited to the traditional leaching reaction

[0005] In view of the frequent transfer of materials in the traditional reaction, separation and washing process, the equipment occupies a large area and the effect of leaching, filtration and washing is not good, the reaction liquid phase is large and difficult to concentrate and purify, a set of reaction, separation, washing, evaporation and drying is designed. The device and method realize the perfect combination of the leaching device and the filtering and washing device. The equipment occupies a small area and has good thermal insulation performance, easy to operate, clean water and chemicals are recycled, clean and environmentally friendly, and has broad application prospects.

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