Introduction
Sulfuric acid slag (SAS) is a byproduct of the sulfuric acid production process. It is composed of fine particles of unreacted raw material, product of the reaction of sulfuric acid and its reaction products, mainly contained in the reaction dioxide (SO2). In the sulfuric acid reaction process, sulfur dioxide is produced to produce sulfuric acid. During the reaction process, some solid materials are generated, including slag (SAS). This slag is mostly formed in the form of granules, and its shape is relatively uniform. After the reaction, SAS slag is mainly mixed with other materials in the production process, and then mixed into the final formation material.
Characteristics
SAS slag is a by-product of sulfuric acid production process and fuel production process. It is mainly composed of fine particles of unreacted raw materials, but it also contains a small amount of thick-plates. The particles mainly include calcium sulfate and iron sulfate. The iron sulfate particles of the sulfuric acid slag are basically some non-toxic iron compounds, except for the sulfate ions, as well as some water-soluble organic complexes such as malonic acid and butyric acid. The malonic acid and butyric acid will transform into toxic organic compounds after entering the environment, and the sulfate ions may combine with other elements in the environment or decompose into sulfates. The composition of SAS contains a large amount of water-soluble inorganic compounds, including calcium, magnesium, and chloride ions, which may affect the quality of the aquatic environment.
Environmental Effects
SAS is produced in large quantities in the sulfuric acid production process, and it is also highly toxic when it enters the environment. The potential hazard of SAS is due to the dissolved toxic ions, including sulfate, calcium, and magnesium, as well as the possible formation of heavy metal complexes. The SAS particles are relatively small and may suspended for a long time, which can easily penetrate into the respiratory system, causing damage to the human body. In addition, the SAS particles can affect the water quality, including the color, odor, and turbidity of water.
Conclusion
In conclusion, SAS is a by-product of the sulfuric acid production process. It is mainly composed of fine particles of unreacted raw materials, and contains a small amount of thick-plates. SAS particles can cause damage to the human body and water quality when they enter the environment. It is important to properly process and dispose of sulfuric acid slag in order to avoid its potential hazard.
