Environmentally friendly and low-cost industrial zirconium carbonate production method

Abstract

The invention relates to an environment-friendly and low-cost production method for industrial zirconium carbonate, and belongs to a preparation method for zirconium compounds. The method is characterized in that washing water and filtered mother liquor produced in a crude zirconium carbonate work section and a product zirconium carbonate work section are used in an alkaline zirconium sulfate worksection and replace non-ionic water to be used as basic zirconium sulfate washing water, raw material zirconium oxychloride preparation water and raw material basic zirconium sulfate slurrying waterin a crude product zirconium carbonate device. The non-ionic water consumption per ton of zirconium carbonate products is reduced to 6.8 tons or less, 89.8% or more of anhydrous sodium sulfate is saved, 32.8% or more of sodium carbonate is saved, and the consumption of the product raw materials is totally reduced by about 342 yuan / ton. Most of the zirconium carbonate washing water and filtered mother liquor discharged by the zirconium carbonate product device are recycled. Most of the non-ionic water and carried chemicals are recycled, the production cost is greatly reduced and the load of a water treatment device is alleviated.

Description

technical field [0001] The invention is an environmentally friendly and low-cost industrial zirconium carbonate production method. A method for the preparation of compounds belonging to zirconium. Background technique [0002] Zirconium was first discovered in zircon (Zircon) by German chemist Martin Heinrich Kaproth in 1789 and prepared zirconium dioxide. [0003] Zirconium carbonate Zr 2 O(CO 3 ).nH 2 O, also known as basic zirconium carbonate ZrO 2 CO 2 ·nH 2 O or zirconium carbonate. It is an important zirconium compound, which is widely used in functional ceramics, structural ceramics, cosmetic antiperspirants, automobile exhaust purification catalysts, water-resistant crosslinking agents for papermaking, paint and ink drier, and is also a relatively economical method for producing ultrafine silica raw materials. [0004] Zirconium carbonate liquid phase precipitation synthesis method has the advantages of simple process control, stable product quality, good ac...

AI Technical Summary

Problems solved by technology

[0009] 1. In the production process, deionized water is used for the preparation of raw material solutions in each step and pulping of intermediate products after washing, resulting in excessive consumption of deionized water

[0010] 2. The crude zirconium carbonate washing water discharged from the crude zirconium carbonate section contains a large amount of sulfate and soda ash, which are all discharged without recycling

It leads to the waste of resources of sodium sulfate and sodium carbonate chemicals carried in a large amount of deionized water and washing water, and also increases the load on the water treatment section

[0011] 3. The zirconium carbonate washing water and filtered mother liquor discharged from the zirconium carbonate production section are all discharged without recycling

Also do not see ideal recycling method in the prior art

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