Zirconium carbonate specially used for synthesis of ammonium zirconium carbonate water-resistant cross-linking agent, and preparation method thereof

Abstract

The invention discloses a zirconium carbonate product specially used for synthesis of ammonium zirconium carbonate water-resistant cross-linking agent, and preparation method thereof, and belongs to the field of zirconium compound preparation. The particle size D50 of the zirconium carbonate ranges from 35 to 40<mu>m, ZrO2wt% is equal to or larger than 40, activity retention time is 24 months or longer; the weight ratio of zirconium carbonate to ammonium bicarbonate is controlled to be 1:0.8-2.8:1; the synthesized water-resistant cross-linking agent reaction time is 30min or shorter. The zirconium carbonate is long in active retention time, wide in zirconium carbonate to ammonium bicarbonate mass ratio range, and short in reaction time; zirconium carbonate particle size is relatively large; filtration operation is convenient; product ZrO2 content is high. Production cost is reduced, waste water discharge amount and salt content in waste water are reduced, raw materials are saved, and the zirconium carbonate and the preparation method are beneficial for environment protection.

Description

technical field [0001] The invention relates to zirconium carbonate specially used for synthesizing ammonium zirconium carbonate anti-water crosslinking agent and a preparation method thereof. A method for the preparation of compounds belonging to zirconium. Background technique [0002] Zirconium carbonate Zr 2 O(CO 3 ).nH 2 O, also known as basic zirconium carbonate ZrO 2 CO 2 .nH 2 O. It is an important zirconium compound, mainly used in cosmetic antiperspirant, automobile exhaust gas purification catalyst, papermaking water-resistant crosslinking agent, paint and ink drier, and is also a relatively economical raw material for the production of ultrafine silica. [0003] The application of zirconium carbonate in water-based coatings and adhesive crosslinking agents is to convert it into ammonium zirconium carbonate crosslinking agent. Ammonium zirconium carbonate is easily soluble in water, unstable in air, and soluble in dilute acids and alkalis. The aqueous solu...

AI Technical Summary

Problems solved by technology

[0010] 1. The activity retention time of zirconium carbonate products is relatively short, and after storage for 3 to 5 months, the activity of the product is significantly reduced, resulting in poor storage stability of ammonium zirconium carbonate produced from it, and crosslinking failure within the storage period

It is even difficult to produce clear and stable ammonium zirconium carbonate products;

[0011] 2. In the process of preparing ammonium zirconium carbonate, the mass ratio range of zirconium carbonate: ammonium bicarbonate that can be adapted is relatively narrow, and can only be used between 1:0.8 and 1:1. The production process conditions are harsh and difficult to control

Detrimental effect on the subsequent centrifugation process, resulting in lower product content

Not suitable for use as a raw material for ammonium zirconium carbonate water-resistant crosslinking agent

[0013] 4. When the zirconium carbonate product of the prior art is used for the synthesis process of the water-resistant crosslinking agent, the reaction time is long, more than 1 hour

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