Proven pulverising bowls providing excellent sample quality 

The bowls can typically reduce a sample for analysis in one to five minutes, depending on the sample and the choice of bowl. They are an efficient and cost-effective choice. But the speed at which they work does not make them any less effective.

Our range includes:

• Large capacity Bowl and Disc style pulverising bowls

• Traditional Ring and Roller style pulverising bowls

• Tungsten Carbide pulverising bowls for low contamination work.

Every bowl is fully compatible with our range of Essa® Pulverising Mills and will provide you with high quality results. 

Reliable, proven performer – Essa Pulverising Mill Bowls were pioneered in the 1980’s and are proven performers that are widely used by laboratories and global exploration and mining companies across the world. They are constructed from carefully-selected steel in a range of sizes and significantly minimise the risk of sample contamination.

Improved sample quality and full traceability – by using the Essa range of Pulverising Mill Bowls, you minimise the risk of unexpected contamination and improve the certainty of your final analysis. This is due to the rigorous chemical and physical testing the bowl products go through before they even reach your operations. The bowls are also fully traceable as every bowl and grinding element is stamped with a serial number that can easily be cross referenced to a 34-element steel analysis report.

Cost-effective quality product – as with all our Essa products, the Pulverising Mill Bowls are made to last the distance and are through-hardened to prolong operational life and minimise sample contamination. They come with a bowl warranty policy which provides a pro-rata credit in the unlikely event of premature failure.

Easy to manoeuvre – the bowls and grinding elements are compatible with pneumatically actuated lifting devices (MILLMATES™), reducing the need for operators to manually move them around the laboratory, reducing safety risks for the operator.

Generally, the Chrome Steel bowls have better wear properties. The Standard Steel is a low-chrome steel, perfect to use when chromium contamination may be an issue.

Standard Steel is often chosen by commercial laboratories because the chrome and iron contamination is usually negligible compared to the levels commonly encountered in most geological materials.

All bowls are through-hardened steel construction and every batch is tested by a certified laboratory to minimise the risk of unforeseen contamination and to improve the certainty of final analysis.

Our bowl range is fully compatible with all our Essa Pulverising Mills.

Bowl and Disc Style Pulverising Bowls

The Essa Pulverising Mill Bowl range has the ‘bowl and disc’ style grinding head forming its core, and is suited to the rapid reduction of large sample masses, together with a homogenising action to provide improved sample quality and increased productivity.

They are a large capacity bowl that can typically reduce ores, minerals, metallurgical samples, ceramics, soils, aggregates, chemicals and similar particulates to a nominal 0.075 mm product in approximately three to five minutes.

They have few moving parts because of the incorporation of a single grinding element which also makes them easier to clean than traditional bowl designs. The large capacity of these bowls means that you can produce a suitably-blended sub-sample for accurate analysis time and time again.

These bowls are available in a range of sizes including the 800, 1000, 2000 and 5000 cc nominal capacities.

Ring and Roller Style Pulverising Bowls

The ‘ring and roller’ bowls are traditional style bowls and can produce an even finer product in approximately one to three minutes. These bowls are available in 50, 100, 125, 300 and 400 cc nominal capacities. They are easy to handle and suitable for smaller sample masses. They are perfect where a very fine product is required.

The usable capacity of each bowl will generally be 60% to 80% of its nominal capacity.

It’s important to keep in mind that the performance expectation of the ring and roller style pulverising bowls is dependent on the characteristics of the sample being milled and the ideal final particle sizing required.

Tungsten Carbide Pulverising Bowls

The Tungsten Carbide pulverising bowls consist of a high quality 125 cc tungsten carbide grinding head with a single ring and roller. The grinding head and elements are made by sintering carbide powder with a cobalt metal powder binder.

This bowl is ideal for low-level multi-element analysis sample preparation and is used when environmental and metallurgic analyses are required. It is particularly useful in cases where low contaminant levels are required when preparing samples for further testing.

It is well-suited for industrial applications where critical processes rely on quality control data to maintain production and profit levels. Industries where this is critical include the construction of ceramics, glass and plastic, chemicals, foodstuffs and pharmaceuticals.

It’s ergonomically designed and provides the best analytical outcomes for the user as contamination is limited to just tungsten and cobalt.

It is as strong and cost-effective bowl that is compatible with the LM2 Pulverising Mill.