The industrial sulfur powder we currently use is generally produced as a by-product of the chemical industry, such as sulfur recovery from coal in coking plants and sulfur recovery in petroleum refining. The recovered sulfur residue cannot be used directly because of its complex composition. In the early days of China, these sulfur residues were often discarded directly because of the high cost of reuse, which caused huge harm and impact to our environment.
Now we are all about environmental protection, not only invaluable assets, but also green mountains and clear waters. Sulfur residues should be used efficiently. So do you know any ways to reuse it?
1. The sulfur content in the sulfur waste residue is very high, generally reaching more than 70%. Therefore, our most common method is to refine the sulfur waste residue, and obtain high-purity industrial sulfur powder by melting and purifying sulfur, which is used in industry Production, agricultural planting and other fields.
2. We all know that sulfur has the function of modifying asphalt. The special sulfur powder we usually use for highway asphalt is this principle. It can increase the viscosity of asphalt, reduce the penetration, and enhance the high temperature deformation resistance. The sulfur content in the sulfur waste residue is very high, and it is directly used for the laying of asphalt roads. On the one hand, it directly solves the pollution problem of the sulfur waste residue.
3. Sulfur is an essential element for plant growth, and after experimental analysis, sulfur residue also contains a high proportion of phosphide, which is very helpful for agricultural planting. However, it should also be noted that the sulfur waste residue contains 8% concentration of sodium chloride. Excessive sodium chloride will cause soil salinization and affect soil planting. This is an urgent problem to be solved in the application of sulfur waste residue in agricultural planting.