At present, the application of refractory materials presents the characteristics of flower, function, fine, diversified, high efficiency and low consumption, the development of refractory materials must adapt to it. The application of sodium hexametaphosphate in refractory materials also meets the new needs of user industry, and the development direction of refractory materials, such as characteristics, integration, green, low consumption, so that the adaptability of refractory materials is the main factor of diversification.
Now, the emergence of various materials can still meet the needs of major industries. Glass industrial sodium hexametaphosphate slowly dissolved in water, therefore, used as refractory material after crushed into powder binder when required to accelerate its dissolution, it can be any proportion mixed with water, let the refractory material due to its good fireproof performance and become the people to understand the material, as a result, enterprise users still need to know about the related standard when choosing materials:
1. Refractoriness of materials
2. Compressive strength of the material
Some enterprises choose refractory materials, not only consider the refractoriness, but also the refractoriness and heat resistance, the compressive strength of the data.
Sodium hexametaphosphate is a new refractory material with good properties in phosphate. Good thermal shock stability, high compressive strength, slag corrosion resistance and impact resistance, with high softening temperature under load and chemical stability. Its use temperature depends on the variety and grade of raw materials, between 1000~1800℃. As some use magnesium material as refractory aggregate and powder, more will use industrial sodium hexametaphosphate as binder.
In addition, it has a linear long chain configuration, which is adsorped to the surface of the particle by the end group, while the middle chain is basically not involved in bonding, which can provide additional electrostatic repulsion. The ionized anion of sodium hetaphosphate dissolved in water adsorbed on the particle surface and increased the electronegativity of the particle surface. The ionized Na+ ions can increase the thickness of the double electric layer, and sodium hexametaphosphate plays a dispersive effect under these two effects.
At this stage, affected by the economic downturn, low demand, resources and environmental binding force increases, the influence of such factors as high temperature industrial and refractory industry entered the new stage of development of the mass transfer efficiency, adaptability of refractory materials is also put forward the new request, beyond the traditional sodium hexametaphosphate as binder can correct use in high temperature environment, thus advances practical effect.
Company Name: Shandong Jufu Chemical Technology Co., Ltd.
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