Reasons and solutions for sand mill failure when grinding pesticide suspensions
Reasons and solutions for sand mill failure when grinding pesticide suspensions
Grinding suspensions is a crucial part of the chemical production process. However, when the physical and chemical properties of the original drug are special, such as pesticides in the grinding of thickening, high content, low melting point and other characteristics, often encounter many challenges. Sand mill as the core equipment in the grinding process, the stability and reliability of its performance directly affects the product quality and production efficiency. In this paper, we will combine an actual case to analyze in detail the reasons for the failure of the sand mill in grinding pesticide suspensions, and put forward the corresponding solution strategy.
First of all, let's look at the phenomenon of failure. In the process of grinding pesticide suspensions, the sand mill appeared the following abnormalities: grinding pressure, resulting in bead rupture, which in turn damages the sand mill and affects the quality of the product; grinding slurry temperature is high, exceeding the set safety range; slurry leakage in the internal circulation mechanical seal; the material exhibits viscous and pseudoplasticity; the slurry in the bubble is more; the sand mill operation is stabilized, the current load is large.
In response to these fault phenomena, we carried out an in-depth analysis. Firstly, the performance of the original drug is stable and does not belong to the type of easy paste, so the problem of the original drug itself can be ruled out. Secondly, the hardness of the original drug is medium, and it has been coarsely crushed, and the starting concentration of the slurry is within the normal range. However, the sand mill separator has a material blockage phenomenon, resulting in the chamber material blockage, the pressure rises, the slurry backpressure into the mechanical seal to cycle. In addition, improper adjustment of the pump speed, small size of the feed pump, and slow flow pump speed also led to problems such as excessive material grinding and pseudo-plasticized paste of the slurry.
For the above problems, we put forward a series of solution strategies. First, regular maintenance and inspection of the sand mill to ensure that the separator is unobstructed to avoid material clogging. Secondly, optimize the pump speed and feeding method to reduce the cumulative pressure and fluctuation and ensure stable system pressure. At the same time, adjust the flow rate and pump speed according to the material characteristics to avoid excessive material grinding and slurry pseudoplastic paste. In addition, increase the amount of dispersant to improve grinding efficiency and reduce viscosity. Finally, viscosity adjustment and defoaming treatment of the slurry to reduce the impact of foaming on the grinding process.
Shanghai Rucca Mechanical & Electrical Technology Co.,Ltd. is a professional manufacturer of sand mills, and its newly developed df series, sf series and d series sand mills have achieved significant results in pesticide suspension grinding. These mills are excellent in designing body structure, machine sealing, output, fineness, temperature control and bubble control, etc., which can effectively solve the problems encountered in the process of grinding pesticide suspensions.
In general, when grinding pesticide suspensions, we need to choose the appropriate sand mill and grinding process according to the physical and chemical properties of the original drug, to ensure the stability and reliability of the grinding process. At the same time, regular maintenance and inspection of the sand mill, timely detection and resolution of problems, is the key to improve product quality and production efficiency. The sand mills of Shanghai Rucca Mechanical & Electrical Technology Co.,Ltd. provide strong support for the grinding process in chemical production with their excellent performance and reliable quality. If you encounter any problems in the process of grinding pesticide suspension, please feel free to call us, we will be happy to provide you with professional solutions and services.
Grinding suspensions is a crucial part of the chemical production process. However, when the physical and chemical properties of the original drug are special, such as pesticides in the grinding of thickening, high content, low melting point and other characteristics, often encounter many challenges. Sand mill as the core equipment in the grinding process, the stability and reliability of its performance directly affects the product quality and production efficiency. In this paper, we will combine an actual case to analyze in detail the reasons for the failure of the sand mill in grinding pesticide suspensions, and put forward the corresponding solution strategy.
First of all, let's look at the phenomenon of failure. In the process of grinding pesticide suspensions, the sand mill appeared the following abnormalities: grinding pressure, resulting in bead rupture, which in turn damages the sand mill and affects the quality of the product; grinding slurry temperature is high, exceeding the set safety range; slurry leakage in the internal circulation mechanical seal; the material exhibits viscous and pseudoplasticity; the slurry in the bubble is more; the sand mill operation is stabilized, the current load is large.
In response to these fault phenomena, we carried out an in-depth analysis. Firstly, the performance of the original drug is stable and does not belong to the type of easy paste, so the problem of the original drug itself can be ruled out. Secondly, the hardness of the original drug is medium, and it has been coarsely crushed, and the starting concentration of the slurry is within the normal range. However, the sand mill separator has a material blockage phenomenon, resulting in the chamber material blockage, the pressure rises, the slurry backpressure into the mechanical seal to cycle. In addition, improper adjustment of the pump speed, small size of the feed pump, and slow flow pump speed also led to problems such as excessive material grinding and pseudo-plasticized paste of the slurry.
For the above problems, we put forward a series of solution strategies. First, regular maintenance and inspection of the sand mill to ensure that the separator is unobstructed to avoid material clogging. Secondly, optimize the pump speed and feeding method to reduce the cumulative pressure and fluctuation and ensure stable system pressure. At the same time, adjust the flow rate and pump speed according to the material characteristics to avoid excessive material grinding and slurry pseudoplastic paste. In addition, increase the amount of dispersant to improve grinding efficiency and reduce viscosity. Finally, viscosity adjustment and defoaming treatment of the slurry to reduce the impact of foaming on the grinding process.
Shanghai Rucca Mechanical & Electrical Technology Co.,Ltd. is a professional manufacturer of sand mills, and its newly developed df series, sf series and d series sand mills have achieved significant results in pesticide suspension grinding. These mills are excellent in designing body structure, machine sealing, output, fineness, temperature control and bubble control, etc., which can effectively solve the problems encountered in the process of grinding pesticide suspensions.
In general, when grinding pesticide suspensions, we need to choose the appropriate sand mill and grinding process according to the physical and chemical properties of the original drug, to ensure the stability and reliability of the grinding process. At the same time, regular maintenance and inspection of the sand mill, timely detection and resolution of problems, is the key to improve product quality and production efficiency. The sand mills of Shanghai Rucca Mechanical & Electrical Technology Co.,Ltd. provide strong support for the grinding process in chemical production with their excellent performance and reliable quality. If you encounter any problems in the process of grinding pesticide suspension, please feel free to call us, we will be happy to provide you with professional solutions and services.
