Raymond mill processes barite

Publication time：2025-06-27
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What is barite?

Barite has barium sulfate (BaSO₄) as its main component, containing 58.8% barium and 41.2% sulfur trioxide (SO₃), and often contains small amounts of impurities such as strontium, calcium, and lead. Its Mohs hardness is 3 - 3.5 (Mohs hardness), it is relatively soft in texture, with a density of 4.3 - 4.6 g/cm³, which is relatively high among common non - metallic minerals. It is usually colorless, white, gray, light yellow, or brown, and occasionally blue or green. It occurs in tabular or columnar crystals, and the aggregates are granular, fibrous, or massive.

Barite powder is an important weighting agent for drilling mud. It can increase the density of the mud, enhance the bearing capacity, balance the downhole pressure, and prevent blowouts. Approximately 85% - 90% of barite powder is used in the petroleum industry. Generally, the purity is required to be ≥92%, the density is ≥4.2 g/cm³, and the fineness is above 325 mesh.

Barite and barite powder.webp

Barite and barite powder

The process of processing barite with Raymond mill

Raw material pretreatment: Large pieces of barite raw materials are crushed to ≤20 - 30mm by a jaw crusher, and then quantitatively, evenly and continuously fed into the grinding chamber of the main machine by a vibrating feeder.

Grinding process: The main machine drives the central shaft to rotate. The grinding roller revolves and rotates on its own axis. Under the action of centrifugal force, it presses against the grinding ring. The grinding roller and the grinding ring work together to grind barite particles into powder.

Classification and screening: The blower blows up the ground powder and sends it to the classifier for sorting. The classifier controls the fineness of the finished product by adjusting the rotation speed. Coarse powder samples fall back to the grinding area for re - grinding, and fine powder enters the cyclone collector for separation and collection.

Key points of processing barite with Raymond mill

Equipment Selection: High-hardness grinding rolls and rings are crucial. Using manganese steel or wear-resistant alloy materials can extend the equipment's lifespan. The frequency conversion speed regulation classifier can precisely control the fineness of the finished product.

Process Control: Air volume adjustment affects powder transportation and classification efficiency, and temperature control can prevent powder caking. It is necessary to accurately control the air volume according to the equipment model, production output, and the fineness requirements of the finished product, and control the discharge temperature at ≤60℃.

Finished Product Quality Requirements: Requirements vary in different fields. For the oil drilling grade, BaSO₄≥92%, density≥4.2 g/cm³, and 325-mesh sieve residue≤5%. For the chemical filler grade, whiteness and impurity content are emphasized, with whiteness≥90% and Fe₂O₃≤0.1%.

Environmental Protection and Energy Consumption: The Raymond mill is equipped with a pulse bag dust collector, which can control the emission concentration at ≤20mg/m³, reducing dust pollution. When processing 325-mesh barite powder, the power consumption is approximately 40 - 60 kWh/t, showing obvious energy-saving advantages.

Advantages of Raymond mill in processing barite

High - efficiency crushing: Adopting advanced technology, it can quickly grind barite to the required fineness, improving production efficiency. Medium - scale equipment can process several tons of raw materials per hour, with an efficiency increase of 30% - 50% compared to traditional equipment.

Flexible particle size adjustment: By adjusting the equipment parameters, the particle size of the finished product can be controlled to meet the needs of different fields.

Low energy consumption: The optimized design reduces energy consumption and saves costs. When processing 325 - mesh barite powder, the power consumption is about 40 - 60 kWh/t, which is lower than that of other equipment such as ball mills, in line with the concept of energy conservation and emission reduction.

Stable operation: With a sturdy structure, stable operation and low failure rate. The main components are made of high - quality materials, which are wear - resistant and pressure - resistant. The maintenance cycle is long and the number of repairs is small, ensuring continuous production.

Environment - friendly: Equipped with advanced dust removal equipment to reduce dust pollution.

Summary

The Raymond mill is a key device for processing barite. The process includes crushing, grinding, classification, etc. It has the advantages of high - efficiency pulverization, adjustable particle size, low energy consumption, stable operation, and environmental friendliness. By optimizing equipment selection, process control, and quality requirements, barite powder that meets different standards can be produced. Its dust removal system can control dust emissions, meeting the requirements of green production, and the low energy consumption reflects energy conservation and environmental protection.