Building gypsum is made of gypsum. The calcined and ground product, also known as β-type hemihydrate gypsum, is the main raw material for making gypsum products such as paper gypsum board, fiber gypsum board, and gypsum decorative board. The main machine in the construction gypsum powder production equipment is gypsum grinding equipment, which currently has three types: Raymond mill, wind-swept mill, and gypsum vertical grinding mill. As a manufacturer of gypsum vertical roller mills, Guilin Hongcheng will introduce to you today the advantages of gypsum vertical mills as construction gypsum powder production equipment.
The technological process of gypsum vertical mill as construction gypsum powder production equipment is: beneficiation → crushing (jaw crushing) → grinding and dehydration → aging → packaging. In this process, the grinding and dehydration of gypsum is carried out in the same gypsum vertical mill equipment. The dehydration speed is very fast and can be completed within a few seconds. The process is simple, occupies less land, saves investment, low production energy consumption and automation High, stable product quality. On the basis of digesting and absorbing foreign advanced technology, our company has designed and manufactured HLM type gypsum vertical mill suitable for this production process, and it has been successfully put into operation.
The main structure of HLM gypsum vertical mill is composed of separator, grinding roller, grinding disc, pressurizing device, motor, reducer, shell and so on. The separator is an important part to ensure the fineness of the product. It is composed of a speed control motor, a reducer, a housing, and an air outlet. Grinding roller is the main part for grinding materials, which is composed of roller sleeve, roller core, shaft, bearing and so on. The grinding disc is fixed on the output shaft of the reducer, and there is an annular groove on the grinding disc, which is the rolling groove for grinding materials. The pressurizing device is an important part that provides grinding pressure, and is composed of a high-pressure oil station, a hydraulic cylinder, a tie rod, an accumulator, etc.. the reducer not only plays the role of decelerating, transmitting power, and driving the grinding disc to rotate.
Working principle of HLM type gypsum vertical mill: The motor drives the grinding disc to rotate through the reducer, and at the same time, high-temperature hot air enters the mill from the air inlet, and the gypsum raw material falls into the center of the grinding disc from the discharge port, and moves to the edge of the grinding disc under the action of centrifugal force, passing through the grinding disc. When the annular groove on the top is crushed by the grinding roller, it will be pulverized. The pulverized material continues to move to the edge of the grinding disc until it is taken up by the high-speed hot air flow at the wind ring. At the same time, the attached water and crystal water carried by the gypsum fine powder are removed. When the materials in the air flow pass through the separator, under the action of the rotor, the coarse powder falls to the grinding table for re-grinding, and the qualified fine powder is milled together with the air flow, collected and cooled in the dust collection device of the system, and becomes the product.
The advantages of HLM type gypsum vertical mill as construction gypsum powder production equipment:
① High efficiency of grinding and dehydration. The vertical gypsum mill adopts the principle of material bed grinding to grind materials, and uses gas to convey materials. The specific surface area of the ground materials increases, and the contact with hot gas is sufficient. In this thermodynamic environment, gypsum fine powder is easy to dehydrate quickly, and Very thorough.
② The particle gradation is uniform, and the ratio of the three phases of the product (soluble anhydrite β-type hemihydrate and residual dihydrate gypsum) is stable. The material only stays in the mill for 2 ~ 3 minutes, while the rotary kiln or frying pan takes 10 ~ 20 minutes.
③The technological process is simple and the construction area is small. When the vertical gypsum mill is working, high-temperature hot air is passed through, and the material is dehydrated and dried at the same time as it is ground, and the dust-laden gas after drying can directly enter the high-temperature-resistant bag filter and collect it as a product. Therefore, the technological process is simple and the layout is compact, which is about 20% to 30% of the building area of the rotary kiln or frying pan used in the same production scale.
④Low noise, less dust, high degree of automation and high operation rate.
⑤ Low investment and quick results.
Gypsum vertical mill has achieved good economic benefits as construction gypsum powder production equipment. If you want to know more details about gypsum vertical mill equipment, please leave us a message.