Abstract: Ultrafine grinding improves pozzolan hydration activity. As a green admixture for concrete, pozzolan is processed by LUM ultrafine vertical mill to produce qualified ultrafine powder.
Pozzolan is natural volcanic mineral material. Finely ground pozzolan powder serves as low carbon green concrete admixture. It can replace part of cement to reduce carbon emission and improve concrete durability and impermeability. Fineness and particle distribution directly decide pozzolan activity. Ordinary grinding equipment struggles to steadily produce powder finer than 1000 mesh, often resulting in low activity and uneven particle size. LUM Ultrafine Vertical Mill from SBM is developed for nonmetallic mineral ultrafine grinding and well suited for pozzolan active powder production.
Standard dry processing workflow: raw stone crushing → impurity and iron removal → silo buffering → metered feeding → multi stage grinding → high precision classification → finished product collection. Pozzolan is relatively soft but contains hard crystal impurities, which puts special requirements on grinding and classification units. LUM ultrafine vertical mill adopts multi roller compression grinding. Combined with built in high precision turbine classifier, it supports wide fineness adjustment and stably produces 800–2500 mesh pozzolan powder.
The mill integrates grinding classification and conveying. Compact layout saves floor space. The whole system runs under sealed negative pressure with pulse dust collector to meet emission standards for green mines and low carbon building material projects. Frequency conversion design allows adjustment of rotating speed and grinding force according to activity targets to control particle gradation accurately. Compared with traditional ball mill ultrafine systems, LUM mill consumes less power and brings better long term economic benefits.
Pozzolan quality varies greatly from different mining areas. Activity, moisture and impurity content differ significantly. Many factories copy general ultrafine grinding parameters, and final powder fails activity standards for commercial concrete. Material testing and process commissioning are essential for pozzolan grinding projects.
If you plan to build a pozzolan ultrafine powder line, please leave message or click business consultation. Submit origin of raw material, feed size, target fineness and capacity. SBM engineers can provide full production line layout and budget based on sample test data.
Summary: This article introduces application value of pozzolan powder in concrete admixture. It shows classification and energy saving advantages of LUM mill and provides reference for pozzolan powder plant selection.
FAQ
Q1: What is the main application of pozzolan ultrafine powder?
A: It is used as mineral admixture for concrete to replace part of cement, cut cost and improve impermeability and sulfate resistance.
Q2: What mesh size pozzolan powder can LUM ultrafine vertical mill produce?
A: It can steadily produce 800–2500 mesh powder to meet fineness requirements for high activity pozzolan admixture.
Q3: Is raw material test necessary before pozzolan grinding?
A: Raw material test on activity moisture and impurity is recommended to set proper grinding parameters and guarantee qualified powder activity.
