Refined boric acid preparation device for chemical engineering

Abstract

The invention relates to the field of chemical engineering, in particular to a refined boric acid preparation device for chemical engineering. The technical problem to be solved by the invention is toprovide the refined boric acid preparation device for chemical engineering. The refined boric acid preparation device for chemical engineering comprises a working machine bottom plate, a second elevated column, a slag washing mechanism, a mixing and soaking mechanism, a filtering and hot melting mechanism, a boric acid precipitating and washing mechanism and the like, wherein the left side of thetop end of the working machine bottom plate is welded to a first elevated column. According to the invention, caked coarse boron slag is crushed and then is subjected to solid-liquid mixing again; sufficient soaking is conducted after mixing and washing, so magnesium chloride, magnesium sulfate and other impurities are fully dissolved and enter a liquid phase to be separated, and the use amount of a container is reduced; crystallized coarse boric acid is subjected to solid-liquid separation at the first time after solid precipitation is completed in the mode of crystallization separation viaa double-layer container; and suspended water spraying washing is conducted, so pure coarse boric acid is obtained.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a device for preparing refined boric acid for chemical industry. Background technique [0002] Boronic acid, chemical formula H 3 BO 3 , is a white powdery crystal or triclinic scale-like shiny crystal, with a smooth feel and no odor. Soluble in water, alcohol, glycerin, ethers and essential oils, the aqueous solution is weakly acidic. It is widely used in the glass (optical glass, acid-resistant glass, heat-resistant glass, glass fiber for insulating materials) industry, which can improve the heat resistance and transparency of glass products, increase the mechanical strength, and shorten the melting time. [0003] In the prior art, boric acid needs to be extracted from the coarse boron slag, but there are many impurities inside the coarse boron slag, which often needs to be processed through multiple processes. The coarse boron slag is relatively dry and coagulated into bloc...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the many impurities inside the coarse boron slag, the present invention often needs to process it through multiple processes. The coarse boron slag is relatively dry and agglomerates, and the impurities inside the agglomerate cannot be washed and separated during the washing process. During the preliminary filtration of coarse boron slag, due to the limitation of the container, part of the coarse boron slag was wasted, and at the same time, the crystals could not be separated in the first time after the boric acid was precipitated. There are still a lot of impurities such as magnesium chloride and magnesium sulfate inside. At the same time, the container during the repeated filtration and extraction process will cause a waste of partially dissolved boric acid residues. At the same time, after the solution is cooled and the internal boric acid solids are precipitated, timely solid-liquid separation cannot be carried out, which leads to Part of the pure boric acid is re-dissolved into the shortcoming of the liquid, the technical problem to be solved by the present invention is to provide a chemical preparation device for refined boric acid

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