Barium sulfate powder with controllable particle size and surface modification production method thereof

The invention belongs to the technical field of chemical product modification, and discloses barium sulfate powder with a controllable particle size and a surface modification production method thereof. According to the method, low-cost barium sulfide is used as a raw material, a barium sulfide solution and a sulfuric acid solution react under the action of a dispersing agent to generate barium sulfate and hydrogen sulfide gas with good dispersity, the barium sulfate is subjected to surface modification to prepare barium sulfate powder with the surface coated with 0.5-10% of modified nano barium sulfate, and the hydrogen sulfide gas is absorbed and treated to produce sulfur. The barium sulfate powder of the present invention has a number-average primary particle diameter of 100-700 nm, the particle diameter of the powder can be effectively adjusted, the powder has an organic compound on the surface, and the powder has hydrophobicity and can be easily dispersed in an organic solvent. 本发明属于化工产品改性技术领域，公开了一种粒径可控硫