Production of bismuth oxychloride

Bismuth oxychloride is a hydrolysis product of antimony trichloride, which is mainly used in the plastics industry to make plastic products have a beautiful jewel. The dosage is generally bismuth oxychloride: the resin is 0.4% to 0.8%, and can be increased or decreased according to the variety requirements.

First, the process.

As shown in Figure 1, it includes processes such as dissolution, conversion hydrolysis, washing and drying, and drying.

Figure 1 Production process of bismuth oxychloride

Second, the main technical conditions.

The water-quenched cerium particles are dissolved in a dilute nitric acid solution to form a cerium nitrate solution.

Salt conversion: The cerium nitrate solution was added to a saturated saline solution (density 1.2 g/cm ³ ), and stirred uniformly. If a white hydrolyzate was produced, it was slightly diluted with hydrochloric acid to dissolve.

Hydrolysis: The dilution water corresponding to 4 times the volume of the ruthenium chloride solution is heated to 95 ° C, and hydrochloric acid equivalent to 0.7% to 0.8% of the volume of the dilution water is added to the dilution solution, and the mash is poured under stirring, and then heat is used. The water was diluted to pH = 2.3, and after clarification, it was separated from the supernatant, and BiOCl was washed with distilled water to pH > 5.

Drying: BiOCl is dried at a constant temperature of 95 to 100 ° C, dried, and passed through 80 mesh.

Third, the main equipment.

One stainless steel dissolution tank: one for the conversion of hard polyvinyl chloride plastics; one for the hydrolysis tank: one for the centrifuge.

Fourth, product quality.

The produced bismuth oxychloride component is (%): BiOCl > 98.5, H ₂ O < 0.5, and acid insoluble matter is less than 0.1.

1. Gear is a mechnical component that can transmit motion and power by meshing.