What is the main use of Ammonium silifofluoride?

Ammonium fluorosilicate, also known as ammonium silifofluoride, is widely used. In the industrial field, it is often used as a flux in the aluminum smelting process. When aluminum is smelted in bauxite, ammonium fluorosilicate is added to reduce the melting point of aluminum oxide, reduce energy consumption, and refine aluminum efficiency, just like paving a smooth way for aluminum smelting.

In the ceramic production industry, it is also indispensable. It can optimize the performance of the ceramic body, reduce the sintering temperature of the body, reduce the shrinkage rate, and then enhance the mechanical strength and chemical stability of the ceramic, so that the ceramic products are like treasures that have been tempered, and the texture is better.

Furthermore, in the service of wood preservation, ammonium fluorosilicate also has a miraculous effect. It can be injected into wood to prevent wood rot and termite erosion, prolong the service life of wood, just like building a strong defense line for wood and protecting it from damage.

And in glass manufacturing, it can improve the thermal stability and chemical stability of glass, help the glass resist the influence of the external environment, and make the glass products seem to be covered with tough armor, with excellent quality.

In the agricultural field, ammonium fluorosilicate can also be used as a trace element fertilizer after proper preparation, adding silicon, fluorine and other elements to the soil, helping crops thrive and enhancing crop resistance, just like injecting vitality into crops and improving yield and quality.

What are the physical properties of Ammonium silifofluoride?

Ammonium fluorosilicate, its physical properties are as follows: This substance is a white crystalline powder at room temperature, like fine snow, with a fine texture. Its density is moderate, about [X] grams/cubic centimeter, and it is more weighty. When placed in the palm of your hand, you can feel its heavy state.

Looking at its solubility, it is slightly soluble in cold water, just like a spiritual object hidden in a pool, with only a little trace; in hot water, the solubility is slightly increased, such as warm sun melting snow, gradually melting in water.

Ammonium fluorosilicate has a high melting point, and it needs to change under strong heat, reaching about [X] degrees Celsius. This characteristic makes it stable under normal temperature environments, maintaining its own shape and structure. And this thing is difficult to volatilize, standing in the air, rarely lost due to volatilization, like a restrained person, not easy to show signs.

Its luster is soft, not as dazzling as metal, but it has a warm feeling. Under the light, it flickers faintly, like a shimmer hidden in the dark, low-key and unique.

Ammonium fluorosilicate is placed in dry air for a long time, and it is not easy to deteriorate. It seems to be able to resist the erosion of time. In case of humid environment, if it encounters a strong enemy, subtle changes may occur, and it needs to be properly stored to prevent performance damage.

Ammonium silifofluoride chemical properties

Ammonium fluorosilicate has unique properties. This substance is in the form of colorless crystals, or white powder, and has deliquescence.

In water, ammonium fluorosilicate is soluble, and its aqueous solution is acidic. If heated, it will decompose and emit gases such as hydrogen fluoride, which is irritating to a certain extent.

Its chemical activity is quite significant and can react with many substances. In case of alkali, corresponding salts and fluorides will be formed; when interacting with acids, depending on the type and conditions of acids, hydrogen fluoride may escape, or other fluorides may be produced.

Ammonium fluorosilicate is widely used in industry. In the manufacture of enamel and glass, it can be used as a flux to help reduce the melting point and improve the texture. In the field of wood preservative, it can prevent wood rot and moth-eaten, and chemically inhibit the growth of microorganisms. In terms of metal surface treatment, it can improve metal surface properties, enhance corrosion resistance and wear resistance.

However, use this material with caution, because its decomposition products such as hydrogen fluoride are toxic, corrosive, and harmful to the human body and the environment. When operating, follow safety procedures and take good protection to prevent contact and inhalation.

Ammonium silifofluoride should be paid attention to when storing and transporting

Ammonium fluorosilicate, during storage and transportation, many matters should be paid attention to.

First word storage. This substance should be placed in a cool, dry and well-ventilated place. Because of its nature or fear of moisture, if it is in a humid place, it is easy to deteriorate. For example, the things recorded in "Tiangong Kaiwu" can only be stored for a long time because the environment is suitable. The same is true for ammonium fluorosilicate. If the humidity is too high, or the appearance of deliquescence will affect its quality. And the temperature should not be too high, under high temperature, or cause its chemical properties to change, so a cool place is the best choice. Storage must be kept away from fire and heat sources to prevent accidents, which is essential to ensure its safe storage.

Second on transportation. When transporting, the packaging must be tight. Suitable packaging materials should be selected to prevent it from leaking. The transportation of items in "Tiangong Kaiwu" should be heavily packaged to ensure the integrity of the items. The same is true of ammonium fluorosilicate. If the packaging is not good, it will vibrate and collide during transportation, which will easily damage the packaging and cause it to be exposed. At the same time, the transportation vehicle must also be clean, and there should be no other chemical residues to avoid reaction with it. And the transportation personnel should know its characteristics, pay close attention during transportation, and if there is any abnormality, dispose of it immediately to ensure the safety of transportation.

Ammonium silifofluoride preparation method

Ammonium fluorosilicate is prepared in two ways. First, hydrofluoric acid is used in combination with silica powder and ammonium carbonate. First, take an appropriate amount of hydrofluoric acid, which is a highly corrosive liquid and needs to be handled with caution. Place it in a corrosion-resistant container and slowly add silica powder. The two gradually react. Hydrofluoric acid etches silica and precipitates silicon ions. After adding ammonium carbonate, which is co-synthesized with silicon ions and fluoride ions. After stirring and temperature control, after a few hours, ammonium fluorosilicate gradually emerges. After the reaction is completed, impurities are filtered out, the filtrate is evaporated and concentrated, crystallized, and then dried to obtain the finished ammonium fluorosilicate.

Second, sodium silicate and ammonium fluoride are used as raw materials. Take an appropriate amount of the liquid of sodium silicate and put it in a container. Another liquid of ammonium fluoride is made, and slowly pour it into the liquid of sodium silicate. The two touch, the ions interact, and the ammonium fluorosilicate gradually precipitates. When reacting, pay attention to stirring and temperature. After the precipitation is formed, separate it with a filter, and the filter cake is washed with water, removed impurities, and dried again to obtain ammonium fluorosilicate. These two methods have their own advantages and disadvantages. The raw materials of the former are easy to obtain, but hydrofluoric acid is dangerous; the operation of the latter is slightly simpler, but the cost of raw materials may be different. The operator should choose according to the situation.