Quartz sand pickling equipment and pickling process

Abstract

The quartz sand pickling equipment comprises a tank body, a discharging device is arranged at the bottom of the tank body, a heating device is arranged at the bottom of the discharging device, a partition plate is fixedly connected in the tank body, and the interior of the tank body is divided into a main reaction space and an auxiliary reaction space by the partition plate; a main reaction space is formed between the partition plate and the heating device, a side reaction space is formed between the partition plate and the top end of the tank body, and a feeding device is arranged on the partition plate; through the arrangement of the main reaction space and the side reaction space, in the heating treatment process of the main reaction space, waste heat is transferred into the side reaction space to preheat quartz sand and acid liquor in the side reaction space, so that the waste heat is utilized, and the utilization rate of the waste heat is improved. And the reaction time of the preheated quartz sand entering the main reaction space can be shortened, and the pickling efficiency of the equipment is improved.

Description

technical field [0001] The invention relates to the technical field of quartz sand pickling, in particular to a quartz sand pickling equipment and a pickling process. Background technique [0002] After the quartz sand is purified by pickling, the content of metal impurities represented by iron is greatly reduced, and its purity is significantly improved. According to the purity of the purified quartz sand, they are used for the manufacture of glass materials respectively. Most of the traditional quartz sand pickling uses acid solution to react with quartz sand. This reaction process is slow and the production efficiency is low. At present, the method of heating the reaction tank is often used to improve the reaction speed, but the existing heated reaction tank generates a large amount of waste heat during operation, which cannot be effectively utilized, resulting in the loss of resources. [0003] In order to solve the above problems, the present invention proposes a quart...

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Problems solved by technology

[0005] The purpose of the present invention is that the reaction tank in the prior art produces a large amount of waste heat when it is working, and these heats cannot be effectively utilized, causing the problem of resource loss, and provide a kind of quartz sand pickling equipment and pickling process that improves heat utilization. To solve the above technical problems

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