The development of barite ore focuses on the application of its refinement, functionalization and compounding, and seeks new ways to develop high value-added barite products. In combination with the mineralogical characteristics of barite, the following suggestions are put forward for its future development and utilization:
(1) Continue to develop high-purity barium salts, such as barium salt fine chemicals. The grade of barite ore is generally high, which can basically meet the requirements for qualified barite for chemical industry (BaSO4 content is more than 83%). After simple purification, it can reach the quality of high-quality barite for chemical industry. Barium chemical industry is currently the most widely used field of barite, and is still an important direction for the development and utilization of barite resources.
(2) Modified barite to improve the performance of fine barite powder and prepare high-performance composites. It is found that the whiteness of the ores containing more than 95% BaSO4 barite after calcination can basically reach more than 85%, which can be added to materials such as paint, plastic, rubber, paint and ink as fine barite powder. For example, as the core material compounded with titanium dioxide, barite can effectively solve the problem of easy agglomeration of titanium dioxide and improve the photocatalytic property of titanium dioxide. At the same time, barite can also replace titanium dioxide and be added in the coating. In addition, the addition of modified barite powder can improve the compatibility between organic substances, and enhance the properties of coatings, plastics, rubber, etc. If barite is modified by stearic acid and stearate and added to the coating, the leveling property and glossiness of the coating can be improved; Adding nano barite to the resin coating can improve the T bending and strain properties of the coating, and greatly improve the corrosion resistance of the coating.
(3) Based on the radiation shielding property of barite, a high value-added barite radiation shielding concrete material was developed.
(4) Develop the next generation magnetic material barium ferrite. At present, barium nitrate is usually used as a barium source to prepare barium ferrite. Barite is of high purity, which is very easy to purify, providing an excellent barium source. It may be used as a barium source to directly prepare barium ferrite. Without adding carbon, the mixture of hematite and barite ore is roasted at 1200 ℃ for 20h. Although the coercivity of the product obtained is obviously lower than that of the product made of pure matter, the specific saturation magnetization of the two products is almost close.