Medicament for preventing phosphogypsum tailing reuse wastewater from scaling and preparation method thereof

Abstract

The invention discloses amedicament for preventing phosphogypsum tailing reuse wastewater from scaling and a preparation method thereof. The components of the medicament comprise an alkaline compound, a solubilizer and water; the contents of the alkaline compound, the solubilizer and the water are as follows: 3-10% of the alkaline compound, 0.1-5% of the solubilizer and the balance of water. The preparation method comprises the following steps of S1, weighing a calcium-containing compound, a sodium-containing compound, a magnesium-containing compound and a potassium-containing compound in proportion, mixing, adding water, and uniformly stirring to obtain an anti-scaling mixture, S2, adding the weighed solubilizer into the anti-scaling mixture, and uniformly stirring again, and S3, evaporating the anti-scaling mixture added with the solubilizer to remove excessive moisture, and crushing to obtain the prepared medicament.

Description

technical field [0001] The invention relates to the field of phosphorus chemical industry, in particular to a medicament for preventing fouling of waste water reused from phosphogypsum tailings and a preparation method thereof. Background technique [0002] The production of phosphoric acid by wet method refers to the dissolution of phosphate rock with sulfuric acid, hydrochloric acid, nitric acid and other acids. The dissolved waste slag and waste water are discharged to the tailings pond for stacking and settlement, and the settled waste water is then reused. During the process of wastewater reuse, the SiF stored in the wastewater 6 2- 、K + 、Na + Plasma is continuously enriched, and the temperature of the wastewater discharged from the production workshop to the tailings pond is high, which eventually leads to the supersaturation of fluorosilicate in the wastewater. Salt precipitates in the pipeline, causing the pipeline to be blocked and affecting the production of t...

AI Technical Summary

Problems solved by technology

During the process of wastewater reuse, the SiF stored in the wastewater 6 2- 、K + 、Na + Plasma is continuously enriched, and the temperature of the wastewater discharged from the production workshop to the tailings pond is high, which eventually leads to the supersaturation of fluorosilicate in the wastewater. Salt precipitates in the pipeline, causing the pipeline to be blocked and affecting the production of the enterprise

[0003] At present, the measures to prevent and control fluorosilicate scaling at home and abroad mainly include cleaning pipes with water, reducing slurry concentration, adding chemical reagents to clean pipes, and mechanical cleaning pipes, etc., but the above-mentioned technologies are not effective enough to meet the production needs of enterprises. ; Therefore, it is urgent to find an easy-to-operate and low-cost technology to solve the problem of fouling of phosphogypsum reuse wastewater pipelines