Dynamic high-temperature acid washing device of high-purity quartz sand

Abstract

The invention relates to a dynamic high-temperature acid washing device of high-purity quartz sand. The dynamic high-temperature acid washing device comprises a reaction kettle, wherein the reaction kettle is of a biconical shape and a hot oil jacket covers an outer wall of the reaction kettle; the hot oil jacket is connected with a heating system through a heat-conducting oil pipe; end covers capable of being opened and closed are arranged at upper end lower ends of the reaction kettle respectively; the end covers are communicated with a vacuum system through a vacuum pipe and the inner part of the reaction kettle is vacuumized; rotary shafts are arranged at two sides of the reaction kettle and are connected with two groups of rotary supporting units respectively, so that the reaction kettle can rotate up and down; the vacuum pipe is provided with a plurality of quick connectors so that the vacuum pipe is convenient to detach and other pipelines are connected. The dynamic high-temperature acid washing device provided by the invention has a reasonable design and a simple structure; chemical reaction can be carried out on the quartz sand at relatively high temperature and under a movement state; acid washing, water washing, dehydration and drying are integrated and are finished in one step, so that a chemical reaction speed and the reaction uniformity are improved and secondary pollution is avoided, and furthermore, favorable conditions are created for improving the quality of products.

Description

technical field [0001] The invention relates to a chemical production device, in particular to a device for pickling high-purity quartz sand, specifically a dynamic high-temperature pickling device for high-purity quartz sand. Background technique [0002] High-purity quartz sand is the main raw material for producing high-purity quartz glass tubes / rods and quartz glass crucibles. Its raw ore is natural quartz ore, which usually contains various impurity minerals and fluid impurities in addition to quartz. Although most of the impurity minerals can be removed by means of flotation, magnetic separation, and gravity separation, it is difficult to remove the elemental impurities in non-mineral forms, which will affect the quality of quartz sand. At present, pickling is mostly used to remove elemental impurities in non-mineral form. However, most of these devices have a single function, are in a static state, and are in a normal temperature state, which makes the chemical reacti...

AI Technical Summary

Problems solved by technology

Although most of the impurity minerals can be removed by means of flotation, magnetic separation, and gravity separation, it is difficult to remove the elemental impurities in non-mineral forms, which will affect the quality of quartz sand.

At present, pickling is mostly used to remove elemental impurities in non-mineral form. However, most of these devices have a single function, are in a static state, and are in a normal temperature state, so that the chemical reaction of pickling is incomplete and the effect of removing impurities is poor.

Moreover, after pickling, the materials are often released for washing to remove the acid, and then dehydrated and dried. The process is complicated and it is easy to cause secondary pollution to the product.

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