Sodium tripolyphosphate is an indispensable auxiliary water reducer in the production of ceramic industry
Adding sodium tripolyphosphate as an auxiliary water-reducing agent in the preparation of ceramics is an important link. At present, many water reducing agents are used in the industry, such as sodium carboxylate series, rot sodium, sodium silicate series and other products. Among them, sodium tripolyphosphateis an indispensable auxiliary water reducer in the production of the ceramic industry.
In the ceramic industry, spray drying is generally used to manufacture powder. The powder prepared by this method has good fluidity, suitable for assembly line production requirements, and can press high-strength green bodies. However, the spray drying process consumes a lot of energy. According to statistics, the average moisture content of the slurry entering the tower is about 40%, and the average moisture content of the powder product from the tower is about 7%. About 33% of the water is evaporated, and the energy consumption required accounts for About 13% of the total energy consumption of production. Therefore, it is hoped that the water content of the slurry entering the spray drying tower is as low as possible and the fluidity of the slurry is good, which requires a water reducing agent to function.
In China's ceramic industry, inorganic salts such as water glass, sodium carbonate, and sodium tripolyphosphate are commonly used as water reducing agents. Ordinary ceramic water-reducing agents have limited dispersion due to molecular structure, relative molecular mass and other factors, and they often produce side effects when over-doped.
At present, sodium tripolyphosphate is a high-performance water-reducing agent in great demand in the ceramic field. Sodium tripolyphosphate is mainly complexed with calcium, magnesium and other divalent ions in clay mud, through cation exchange, so that more sodium ions surround the clay, and the replaced calcium and magnesium ions are synthesized by chelating with polyphosphate It is a soluble complex that supplements the steric hindrance effect. Make the clay with less water have higher fluidity, and evenly dispersed.
The ceramic powder is dispersed in water, and the slurry forming the particle bundle is aggregated. Sodium tripolyphosphate water reducing agent is added to the slurry. The molecules in the sodium tripolyphosphate water reducing agent can be adsorbed on the surface of the ceramic particles in the slurry. Adsorption interacts to destroy the flocculation between the particles and obtain a slurry with good dispersibility and fluidity. The sodium ion reduces the number of molecules in the hydration layer, thereby releasing excess adsorbed water, increasing the content of free water in the mud, and achieving a water reduction effect.
In addition, Chongqing Chuandong Chemical Group has also developed and produced ceramic grade sodium tripolyphosphate specifically for the ceramic industry. It has more than 20 internal control indicators and is well received in the ceramic industry at home and abroad.
In the ceramic industry, spray drying is generally used to manufacture powder. The powder prepared by this method has good fluidity, suitable for assembly line production requirements, and can press high-strength green bodies. However, the spray drying process consumes a lot of energy. According to statistics, the average moisture content of the slurry entering the tower is about 40%, and the average moisture content of the powder product from the tower is about 7%. About 33% of the water is evaporated, and the energy consumption required accounts for About 13% of the total energy consumption of production. Therefore, it is hoped that the water content of the slurry entering the spray drying tower is as low as possible and the fluidity of the slurry is good, which requires a water reducing agent to function.
In China's ceramic industry, inorganic salts such as water glass, sodium carbonate, and sodium tripolyphosphate are commonly used as water reducing agents. Ordinary ceramic water-reducing agents have limited dispersion due to molecular structure, relative molecular mass and other factors, and they often produce side effects when over-doped.
At present, sodium tripolyphosphate is a high-performance water-reducing agent in great demand in the ceramic field. Sodium tripolyphosphate is mainly complexed with calcium, magnesium and other divalent ions in clay mud, through cation exchange, so that more sodium ions surround the clay, and the replaced calcium and magnesium ions are synthesized by chelating with polyphosphate It is a soluble complex that supplements the steric hindrance effect. Make the clay with less water have higher fluidity, and evenly dispersed.
The ceramic powder is dispersed in water, and the slurry forming the particle bundle is aggregated. Sodium tripolyphosphate water reducing agent is added to the slurry. The molecules in the sodium tripolyphosphate water reducing agent can be adsorbed on the surface of the ceramic particles in the slurry. Adsorption interacts to destroy the flocculation between the particles and obtain a slurry with good dispersibility and fluidity. The sodium ion reduces the number of molecules in the hydration layer, thereby releasing excess adsorbed water, increasing the content of free water in the mud, and achieving a water reduction effect.
In addition, Chongqing Chuandong Chemical Group has also developed and produced ceramic grade sodium tripolyphosphate specifically for the ceramic industry. It has more than 20 internal control indicators and is well received in the ceramic industry at home and abroad.
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