The main components of phosphorus slag are calcium oxide and silicon dioxide, which have excellent activity and are widely used in the building materials industry. In recent years, phosphorus slag powder has also been widely used in commercial concrete. The market prospect is good, with good social and economic benefits. Phosphorus slag vertical grinding is a widely used phosphorus slag grinding machine process, with low system investment and operation maintenance costs, high system reliability, and low grinding power consumption. The particle shape of the grinding product is superior to that produced by the roller press final grinding system, so its product performance is better under the same specific surface area. As a manufacturer of phosphorus slag vertical mill, HCMilling(Guilin Hongcheng) will introduce the technical requirements for phosphorus slag grinding and the process flow of phosphorus slag vertical mill.

There is a phosphorus slag composite fine powder additive and a production process thereof, the formula of which is phosphorus slag 93 8 5-9 7.8 0%, triethanolamine 0.0 2-0 15%, gypsum 2-6%; Specific surface area: 400~4200 ‘/Kg. Process: Adding gypsum during primary grinding of phosphorus slag, sorting, and adding triethanolamine during secondary grinding.

Phosphorus slag vertical mill was originally used to grind pulverized coal, with a smaller specification. They began to be used in the late 1970s to grind cement raw materials, with increasingly larger specifications. Since the mid-1980s, with the continuous improvement of vertical mills and the research and development of new wear-resistant materials, vertical mills have achieved success in grinding cement clinker. Compared to other grinding systems, the process of phosphorus slag vertical mill has the advantages of integrating drying, grinding, and powder selection, simple systems, and high single unit output, For grinding materials with high moisture content, it is not necessary to install a drying equipment alone, resulting in lower system investment and operation and maintenance costs. The system has high reliability and low power consumption for grinding. The unit power consumption for grinding slag powder with a specific surface area of 420m/kg is about 45kWh/t.

Process flow of vertical grinding phosphorus slag powder: slag is transported by train or truck into the plant and unloaded to a combined storage warehouse for storage; Then, it is sent to the slag bin of the batching station for storage through a grab and belt conveyor. A feeding scale is provided at the bottom of the slag silo. The slag in the silo is quantitatively discharged by a belt feeding scale and sent to the vertical mill system via a belt conveyor. To prevent metal blocks from entering the mill, an electromagnetic iron remover and a metal detector are installed on the incoming belt conveyor. The slag sent from the raw material system is fed into the vertical mill through the pneumatic flap valve and the air lock feeding valve for drying and grinding. The material fed into the mill is pressed by the grinding roller on a rotating grinding plate and crushed under a certain load. The milled material is sent by hot air, i.e., ascending bearing air, into a high-efficiency powder concentrator located at the upper part of the vertical mill to be sorted into coarse powder and fine powder; The fine powder, that is, the finished product, is collected by a bag type dust collector and sent to the finished product system through conveyor equipment such as a chute and elevator; The coarse powder falls on the grinding plate and is ground again. In order to save energy, a portion of the coarse powder is discharged from the vertical mill and sent back to the vertical mill through equipment such as iron remover, elevator, conveyor, etc. for further grinding. After being dedusted by a high-efficiency bag dust collector, the exhaust gas is discharged into the atmosphere through a chimney by an exhaust fan, and the drying heat source is provided by a gas fired hot air stove. Qualified phosphorus slag grinding mills are fed to 3 sets through elevators and conveyorsφ15X40m and 1 seatφ8X25m slag powder warehouse for storage. The slag powder silo is equipped with an open aerated chute. After being aerated, the phosphorus slag vertical mill can be transported into a bulk truck and shipped out of the factory through the unloading equipment at the bottom of the silo and a truck bulk machine.

Phosphorus slag vertical mill, with mature production process, stable product quality, meets the technical requirements of phosphorus slag grinding, and saves energy and reduces consumption during production. The additive of phosphorus slag vertical mill has excellent dispersion, can improve the performance of the surface of concrete powder particles, produce fluidization effect and reinforcement effect. Even if the water cement ratio of concrete is as small as 0.26, the slump can still reach more than 22cm, and can simultaneously achieve high strength, high fluidity, and good rheological properties. Concrete has high late strength, good crack resistance, and durability, and has a good market reaction. If you have project requirements for phosphorus slag grinding mill, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com. Our selection engineer will plan scientific equipment configuration for you and quote for you.