Quality control in the silica production process involves many links and aspects. Here are some key quality control steps and considerations:

Raw material control: Selection of high-quality raw materials is the basis for ensuring the quality of silica. The main raw materials such as quartz sand, soda ash, etc. should comply with relevant standards and undergo strict warehousing inspection.

Temperature and time control in the carbon black preparation process: In the carbon black preparation process, the raw material gas is heated to a certain temperature through the heating furnace and then enters the reaction chamber to react with the catalyst at high temperature. During this process, the reaction temperature and time need to be strictly controlled to ensure that the size and distribution of the carbon black particles produced meet the requirements.

Quality control of the purification process: After the carbon black is prepared, it needs to be purified to remove impurities such as catalysts and gases. During the purification process, appropriate solvents and extraction methods should be selected to ensure that impurities are effectively removed while avoiding secondary pollution of carbon black.

Quality control of the drying process: Purified carbon black contains high humidity and needs to be removed through a drying process. Appropriate temperature and wind speed should be controlled during the drying process to ensure uniform drying of carbon black and avoid agglomeration or over-drying, which may lead to a decrease in carbon black performance.

Packaging and Storage: Dried silica pellets should be placed in bags or containers and sealed to prevent moisture from entering. The storage environment should be kept dry and ventilated, avoiding direct sunlight and high temperature environments to ensure the quality of silica is stable.
Quality testing and evaluation: Quality testing and evaluation of silica should be carried out regularly during the production process, including indicators such as particle size distribution, chemical composition, specific surface area, pH value and resistivity. These indicators can reflect the performance and quality of silica and provide a basis for quality control.

In summary, quality control in the silica production process requires attention to multiple links such as raw materials, preparation, purification, drying, packaging and storage. Through strict control of process parameters and quality testing, high-quality silica can be produced. Black product.