Aluminum hydroxide has the characteristics of non-toxic, non-volatile, non-precipitating, and cheap. At the same time, it has good flame retardancy, smoke elimination function and relatively low decomposition temperature, and has good flame retardancy compatibility with rubber, plastic, epoxy resin and other polymers. It is a large amount of inorganic flame retardant. The preparation of filler aluminum hydroxide fine powder (5μm<median particle size<25μm) is an important part of the aluminum hydroxide production line. So, how to choose aluminum hydroxide powder crushing machine? Guilin Hongcheng is a manufacturer of aluminum hydroxide vertical mill. Today, I will introduce to you how to choose aluminum hydroxide powder crushing machine for the production of aluminum hydroxide powder?
The preparation of aluminum hydroxide fine powder in the aluminum hydroxide production line currently adopts the method of crushing coarse particles of aluminum hydrogen. According to different mechanical principles of aluminum hydroxide powder crushing, it can be divided into airflow impact crushing (jet mill), mechanical impact crushing (mechanical mill), and grinding body impact crushing (ball mill). The jet mill is a jet mill with a hierarchical structure above the interior. The raw material is fed through the screw feeder, and the material is attracted to the inner cavity of the pulverizer by the jet effect of the nozzle. With the supersonic airflow ejected from the nozzle nozzle, the raw material is accelerated to a high speed in the acceleration tube and is collided on the impact surface. After the material is collided, the purpose of crushing is achieved under the action of the high-speed rotating air flow and the friction of the material itself. Mechanical impact ultra-fine mill (mechanical mill) refers to the rotary body (rod, hammer, blade, etc.) rotating at high speed around the horizontal or vertical axis to severely strike, impact, shear, etc. Or the ultra-fine pulverization equipment that produces strong impact and collision between the fixed body and the particles to crush the particles. The ball mill uses the impact of the falling grinding body and the grinding effect of the grinding body and the inner wall of the ball mill to crush and mix the materials. When the ball mill rotates, due to the friction between the grinding body and the inner wall of the ball mill. Bring the grinding body up in the direction of rotation and then drop it. In this way, the material is continuously crushed. The above three crushing methods are the basic situation of the current aluminum hydrogen crushing equipment. The jet mill has low capacity, high energy consumption, and high viscosity; the mechanical mill has large capacity, low energy consumption, and high viscosity; the ball mill has low capacity, high energy consumption, and low viscosity. At present, there is an urgent need for a production process that can produce low-viscosity aluminum hydroxide, and has large production capacity and low energy consumption.
Aluminum hydroxide vertical grinding mill manufacturer Guilin Hongcheng recommends you to choose HLM aluminum hydroxide vertical roller mill as the aluminum hydroxide powder crushing machine. The temperature is 150-170°C; during the temperature raising process, the aluminum hydroxide raw material is placed in a vertical mill for crushing to obtain low-viscosity filler aluminum hydroxide. When the aluminum hydroxide vertical mill is working, the motor drives the millstone to rotate through the reducer, and the material falls from the discharge port to the center of the millstone, moves to the edge of the millstone under the action of centrifugal force and is crushed by the rollers, and the crushed material flows from the edge of the millstone At the same time, it is brought to the high-efficiency powder classifier integrated with the vertical mill by the high-speed upward hot air flow from the nozzle ring (air ring). The coarse powder is sorted by the separator and returned to the grinding table for re-grinding; the fine powder is then The air flows out of the mill and is collected in the dust collection device of the system, which is the product. Coarse materials that are not carried by the hot air flow and metal parts that accidentally enter sink from the air ring, and after being scraped off by the scraper, they are fed into the mill through the bucket elevator of the external circulation and are ground again.
HLM aluminum hydroxide vertical mill is an ideal large-scale grinding equipment, widely used in cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries. It integrates crushing, drying, grinding, grading and conveying, and has high production efficiency. It can grind block, granular and powder raw materials into required powder materials. First, when the raw material wet aluminum hydrogen is added to the raw material bin, the steam preheater is turned on, and the aluminum hydroxide vertical mill is turned on at the same time, and then the aluminum hydroxide vertical mill is used for drying and crushing integrated processing. Steam heat exchange is used to raise the temperature during the integrated processing of drying and crushing, which meets the corresponding temperature requirements, and because the steam temperature does not exceed 180°C, there is no risk of losing crystal water for aluminum hydrogen, which improves the quality and avoids the traditional drying mode. Electricity or natural gas as energy source. When the hot blast furnace is above 400°C, the aluminum hydrogen drying is likely to cause over-baking and affect the product quality. At the same time, the circulating air system is adopted to recover part of the hot exhausted air for secondary use, which reduces heat loss and energy consumption. Using the integrated solution of drying and crushing, the air entering the mill is heated to raise the temperature, and the moisture attached to the raw materials is taken away, so as to achieve the purpose of drying and crushing at the same time. Avoid the increase of energy consumption caused by secondary transportation, effectively reducing energy consumption. If you have purchase requirements for aluminum hydroxide powder crushing machinery, please leave us a message for detailed parameters and quotations of aluminum hydroxide vertical mill equipment.