Detection method and detection system of seed crystal stability

Abstract

The invention relates to a crystal seed stability detection method and detection system. The crystal seed stability detection method comprises the following steps: respectively measuring and calculating the stability of crystal seed systems at different time points in the aging process; mixing the crystal seed systems at different time points in the aging process with diluent, and detecting by using a turbidity meter so as to obtain turbidities of different time points; establishing a relationship table of the turbidities and the stability; preparing a crystal seed diluted liquid under same conditions of the crystal seed system and the diluent in the former aging process, performing on-line detection by using the turbidity meter so as to obtain an instant turbidity, and comparing according to the relationship table of the turbidities and the stability, thereby obtaining instant stability. The detection device comprises a container, a mixing device, the turbidity meter and the like applicable to the method. According to the detection method, as the corresponding relationship table of the turbidities and the stability is firstly established, the stability can be calculated according to the turbidities according to the relationship table, and thus the detection accuracy and the instantaneity can be remarkably improved.

Description

technical field [0001] The invention relates to products prepared by crystallization, in particular to a method for detecting stability of crystal seeds and a detection system for stability of crystal seeds. Background technique [0002] Crystallization is an important product preparation method. Its basic principle is that when a seed crystal is added to a saturated solution, the components in the solution leave the solution and grow with the seed crystal as the nucleus to form a large crystal, and then the crystal is separated from the solution to obtain the desired product. . In the above-mentioned crystallization process, the properties of the seed crystal have a great influence on the subsequent production process and the quality of the finished product. [0003] For example, in the production of titanium dioxide by the sulfuric acid method, the concentrated titanium solution and sodium hydroxide solution are usually partially neutralized in an appropriate proportion, ...

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Problems solved by technology

[0005] The above detection process usually takes 2 to 5 minutes according to the proficiency of the operator. At the same time as the detection, the seed crystal system in production is still maturing

Often when the test data is obtained, the nature of the seed crystal system has changed, and the test results can only be used as a vague reference. In addition, the testers have different judgments on the blue phase, which makes the stability of the seed crystal system difficult in production. precise control

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