defoamer for Sand and gravel

During the processes of sand and gravel mining, washing, and subsequent processing, the problem of foaming occurs frequently, which seriously affects production efficiency and product quality. The sand and gravel defoamer has thus become the key to solving this difficult problem.

There are mainly two reasons for the generation of foam during sand and gravel processing. On the one hand, in the washing stage, the impurities on the surface of the sand and gravel are mixed with the washing water. Coupled with the mechanical actions such as the impact of the water flow and stirring, a large amount of air is mixed into the water, forming numerous tiny bubbles. These bubbles gather together to form foam. On the other hand, in order to improve the washing effect of sand and gravel or during the production of products such as concrete, various additives are often added. Some of these additives have surface activity, which will reduce the surface tension of water, making it easier for foam to be generated and more stable.

The presence of foam brings many troubles to sand and gravel processing. In the sand and gravel washing stage, the foam will prevent the full contact between the sand and gravel and the washing water, reducing the washing efficiency. This will lead to the residue of impurities on the surface of the sand and gravel, affecting the quality of the sand and gravel. In subsequent applications such as concrete mixing, excessive foam will cause pores in the internal structure of the concrete, reducing its strength and durability and affecting the quality of construction projects. In addition, a large amount of foam may overflow from the equipment, resulting in a messy production environment and increasing the cleaning cost.

Sand and gravel defoamers are usually compounded from components such as polyethers, esters, and inorganic substances. Its working principle is based on reducing the surface tension of the foam system. When the defoamer is added to the sand and gravel processing system containing foam, the defoamer molecules quickly spread on the surface of the foam, destroying the elasticity and stability of the foam liquid film. At the same time, certain components in the defoamer interact with the surface-active substances in the foam, further weakening the stability of the foam, causing the foam to quickly break and disappear, thus achieving efficient defoaming and long-lasting antifoaming.

The use of sand and gravel defoamers has significant advantages. It can quickly eliminate the foam generated during the sand and gravel processing, greatly improving the washing and production efficiency and ensuring the quality of sand and gravel and related products. The operation is simple. Only the addition amount of the defoamer needs to be adjusted reasonably according to the amount of foam generated and the characteristics of the system. Moreover, with the development of technology, new types of sand and gravel defoamers are more environmentally friendly and will not cause secondary pollution to the environment and sand and gravel products, providing strong support for the efficient and green development of the sand and gravel processing industry.