FAQ

Dolomite Properties and Grinding BehaviorDolomite has a Mohs hardness of 3.5–4, slightly harder than limestone but still brittle and suitable for compression grinding. It breaks efficiently under roller pressure with low energy loss. Typical feed size is below 30–40 mm after crushing, and moisture

Material Characteristics and Grinding BehaviorLimestone typically has a Mohs hardness of 3–4, making it a soft to medium-hard, brittle material. It fractures easily under compressive and shear forces, which favors roller-based grinding systems. Feed size is usually below 30–50 mm after primary cru

Why is limestone relatively easy to grind?Limestone is a soft to medium-soft material, usually around Mohs 3, with good brittleness and low abrasiveness. That means the grinding load is moderate and wear on rollers, rings, and liners is normally lower than with silica-rich stone. In most plants, cru

Why is a Raymond mill usually the best fit at 6 TPH?At 6 TPH, barite grinding is in the middle range where stable fineness and simple operation matter more than very large installed power. Barite is brittle, with typical Mohs hardness of 3 to 3.5, so it breaks well under roller and ring compression.

What makes barite suitable for drilling powder production?Barite is mainly used in drilling mud as a weighting agent, so the mill choice must support stable fineness, low contamination, and steady throughput. The mineral is relatively brittle, with typical Mohs hardness around 3 to 3.5. It is not di

What makes quicklime difficult to grind?Quicklime, or CaO, is brittle and usually around Mohs 3 to 4, so breakage itself is not the main problem. The real issue is moisture. Quicklime reacts with water and absorbs humidity from air, which can cause hydration, agglomeration, and heavy buildup in duct

Why is an ultra-fine mill preferred for 800 mesh calcite?Calcite is a relatively soft mineral, usually around Mohs 3, with good brittleness and low abrasiveness. That makes it easy to grind, but 800 mesh is already in the fine powder range, so the key issue is not breakage alone. The real requiremen

How does talc behave in grinding?Talc is soft, typically around Mohs 1, with good natural grindability but strong plate-like cleavage. That means it breaks easily, yet it can produce flaky particles and coating inside the mill if feed moisture is too high. In practice, dry feed below 1% moisture is

An efficient limestone grinding plant starts with matching the process to the product target. For 80 to 325 mesh powder, MTW Raymond Mill or LM Vertical Roller Mill is usually selected based on capacity and drying demand. For powder finer than 400 mesh, LUM Ultrafine Vertical Mill or MW Micro Powder

For 200 mesh quicklime powder, the standard industrial choices are MTW European Type Raymond Mill or LM Vertical Roller Mill, selected by required capacity, feed size, and drying demand. Because 200 mesh is within the normal range for both machines, the decision is usually based on throughput, moist

Quick AnswerTo grind calcite into 800 mesh fine powder, the practical choice is an ultrafine grinding system with high-efficiency classification. In most industrial lines, 800 mesh means about D97 15 microns, which is beyond the stable operating range of standard Raymond or conventional vertical rol

Which mill is normally selected?For limestone at 20 tons per hour, mill selection mainly depends on target fineness and moisture. Limestone is relatively soft, usually Mohs 3 to 4, so impact, compression, and grinding under roller pressure all work well. If the product is in the 80 to 325 mesh range