” >Water glass Also known as sodium soda, it is odorless, tasteless, non-flammable, non-explosive, and alkaline. It is mainly used as adhesive for packaging materials, raw materials for detergents, refractory materials and raw materials for the foundry industry, and for manufacturing chemical products. Raw material, accelerating setting agent of concrete, and can also be used in anti-acid corrosion engineering. This is one of the materials used to prepare silica black.
” >Sodium soda in industry It is widely used, how to produce good quality and affordable products?
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” >Traditional wet production process Traditional wet production The yield of soda ash is high, the energy consumption is low, the labor intensity is low, and the raw materials are easily available. However, this method can only produce products with a modulus less than 2.5. Its production principle is that quartz sand is dissolved in high-temperature caustic soda to form sodium silicate. Active SiO2 normal pressure production process Active SiO2 normal pressure production of soda ash is a new process developed in the process of treating three wastes in recent years. This method can produce any product with a modulus of 2.2 to 3.7. Silica manufacturer Yihai Industry and Trade learned that the mechanism is to use active SiO2 (or silica gel) in by-products or scraps produced in industrial production to react with caustic soda by heating under normal pressure to generate sodium silicate. The reaction equation is the same as the traditional wet process. It can be seen from this that the wet production of soda ash is divided into two types: traditional wet process and active SiO2 normal pressure production process.
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” >So, how to use water glass to prepare silica Well, actually, we still need another product, which is ammonium salt. Let’s take a look at it below.
” >From the reaction formula, it can be seen that the ammonium salt solution and The reaction of water glass liquid with appropriate modulus can directly generate silica precipitate under suitable conditions and release ammonia gas at the same time. The silica precipitate is separated and dried to obtain a white carbon black product; the ammonia gas can be recycled and made into Ammonia and liquid ammonia. This is how water glass is used to produce white carbon black.
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