Application area
Moisture protection and drying of goods
Silica gel has strong adsorption capacity, and its composition is safe and reliable. It can be used as drying and moistureproof agent for medicines, food, electronic appliances, clothing, shoes and bags, precision equipment and military products.
Humidity indicator
In addition to absorbing moisture to prevent drying, it can display different colors according to the change of environmental humidity to prompt that the humidity exceeds the standard and the desiccant should be changed in time. It is usually used in product package with high environmental requirements. Most of the high-end electronics, instruments and equipment such as electronic components and precision optical components, are easily affected by moisture, which leads to product corrosion, sensitivity reduction and even irrecoverable damage. In order to prevent the product from being eroded and damaged by moisture, most products use humidity indicating silica gel to detect the ambient humidity.
Petrochemical industry
In the fine chemical industry and petrochemical industry, silica gel can be used as catalyst in bonding of different precious metals and other substances for catalytic cracking. It can be also directly used as catalyst in the production of melamine. Silica gel can be made into a variety of combinations with different pore sizes and specific surface according to the bonding requirements to meet the catalyst requirements.
Preparation and drying of industrial gas
It is mainly used for air drying and purification in the process of air separation, pressure swing adsorption to remove CO2 (PSA), separation of light hydrocarbon from natural gas, dew point reduction of hydrocarbon and production of natural gas and gasoline while drying natural gas.
Air purification of living environment
It is mainly added to the filtration system of air purifier. With the strong adsorption performance of silica gel, it can more effectively adsorb, decompose or transform various air pollutants, generally including PM2.5, dust, pollen, peculiar smell, formaldehyde and other decoration pollutants, bacteria, allergens, etc., to improve air cleanliness.
Medicine separation and purification
The basic component of silica gel is silicon dioxide. As a chromatography material, silica gel is used for the separation and purification of high molecular bioactive substances, such as biopharmaceuticals, fermentation engineering, gene engineering, cell engineering and enzyme engineering, and preparation of high-purity organic substances. Silica gel is the most important inorganic separation matrix in biochemical engineering.
Beer stabilizer
Silica gel is applied to the beer production process to adsorb the high molecular protein substances which are easy to cause precipitation and deterioration so as to improve the transparency and prolong the shelf life.
Food additive
High-purity silica gel powder can be added to milk powder, coffee and other foods at a certain proportion to change the fluidity of products for moisture protection and caking prevention.
Chromatographic analysis
As the stationary phase of thin-layer chromatography and high performance liquid chromatography (HPLC), it is used in the field of analysis, test and identification, and rapid separation and detection of complex components.
Cat litter
Silica gel cat litter can absorb the urine of pets and the peculiar smell within tens of seconds, with the absorption amount reaching more than 80% of its own weight; through its super adsorption function, it can reduce the growth of bacteria and keep the surface of cat litter dry and clean so as to make the living environment healthy and safe.
Fertilizer
Silica gel can be added to silicon fertilizer as a raw material, which can improve soil composition, store and release nutrients slowly, conducive to the growth of crops.
Dried flower production
Silica gel can be used to make dried flowers, which can remove the water in flowers in a short time and keep the original shape and color of the petals to make the dried flowers look more natural and realistic, and easy to preserve.
Building decoration material
Silica gel can be added to the paints or diatom ooze for interior wall decoration. After the addition of silica gel, the adsorption function works to adjust indoor air humidity and adsorb indoor odor and harmful gases.
Oil filtration and decoloration
Silica gel has a large number of nanoscale pores in its structure, which can effectively adsorb pigments and impurities in waste engine oil or waste diesel oil and lubricating oil. The smell of the filtered oil is pure and the color reaches the national standard.
Purification of industrial wastewater
After modification treatment, silica gel can be used for wastewater treatment and adsorption of impurities and harmful substances in industrial wastewater, so that the wastewater can meet the discharge standard required by environmental protection to protect water resources.
Liquid crystal intermediate
With the continuous development of electronics technology, the requirements for the purity of liquid crystal materials are becoming higher and higher. After the reagent grade treatment, the metal ion content of silica gel is very low and it can be used for decoloration of liquid crystal and removal of impurities to improve the product quality.
Inorganic adhesive
It is used as inorganic adhesive in the precision casting, textile, papermaking and other industries.
