Double Roller Powder Crushing Machine Grinding Mill Factory Stainless Steel 150μm Fineness Uniform Discharge

A double-roll crusher is usually the first powered stage after manual feeding. Two parallel rollers rotate toward each other and pull the feed into the gap between them, breaking it by compression rather than by impact. For a powder line this matters, because it produces a comparatively narrow and uniform particle-size output instead of a wide spread with a lot of dust and fines. The TENCAN machine reduces material to about 150 um at 52 r/min with a throughput of up to 300 kg/h, which makes it a practical preparatory unit ahead of finer milling or sieving.

The machine is chosen for the behaviour of the material rather than for one product name. It works well on brittle and medium-hard feed that fractures under compression - materials such as ore, limestone, coal gangue, slag and carbon blocks - and on softer products where stainless-steel contact is preferred, as in food, chemical and pharmaceutical preparation, including herbs, spices and similar ingredients. It is less suited to very plastic or highly sticky materials that smear instead of breaking, and to feed that is harder, or larger, than the rollers can grip.

Fineness on a roll crusher is set by the gap between the two rollers, so the machine can be tuned to the size the next process needs instead of running at one fixed output. Widening the gap produces a coarser discharge; closing it produces finer material, within the working range of the machine. Because both rollers feed the material evenly, the discharge stays consistent across the run - the property behind this machine's "uniform discharge" characteristic. When adjusting the gap, it helps to check the target size against the following stage, a mill or a screen, so the crusher and the rest of the line stay matched.

In a powder-processing line the double-roll crusher normally sits at the head, taking bulk feed down to a workable size before finer equipment takes over. From there the crushed material can go to a ball mill or other grinder for fine grinding, and then to a sieving machine for final classification. Because the crusher delivers a more uniform feed, the downstream mill and screen work with fewer surprises - less oversize to re-handle and fewer fines to carry away as dust. TENCAN supplies the whole chain, so the crusher can be specified to match the mill, jars and screens used further along the line.

Crushers are not interchangeable; each is suited to one part of the size-reduction chain. Jaw and gyratory crushers take large lumps and coarse feed, hammer and impact mills break by impact and tend to create more fines, and a double-roll crusher sits in between: it accepts already-manageable feed and reduces it by compression to a uniform, relatively fine size with limited dust. Choose the roll crusher when uniform discharge and a controlled particle size matter more than very high throughput or primary lump breaking, and when the material is brittle rather than plastic.

The machine uses stainless-steel double rollers, so the parts that contact the product resist corrosion and are easy to clean - important where the output goes into food, medicine or fine chemicals. A dust board is fitted inside the housing to seal the working area and keep finely crushed material from splashing out, which both protects the operator and keeps the product where it belongs. For multi-product use, the smooth stainless surfaces make it straightforward to clean the crushing zone between materials and reduce carry-over.

A roll crusher is a low-speed machine, which keeps wear modest, but a few points keep it running reliably: check the roller surfaces for wear, confirm the roll gap setting before a run, keep the dust board and seals in good condition, and follow the recommended lubrication. The machine carries a one-year warranty, and its compact and simple structure means routine maintenance is straightforward. Technical support is available if a question arises, and installation, training and maintenance services can be arranged.

What fineness does it produce? About 150 um at the standard setting, adjustable through the roll gap.

What capacity can it handle? Up to around 300 kg/h, driven by a 1.5 kW motor at 52 r/min.

Which materials can contact the product? The rollers are stainless steel, so the parts touching the product are corrosion-resistant and easy to clean.

Is it suitable for food or medicine? Yes - stainless-steel contact parts and a sealed, cleanable crushing zone suit these applications.

How much space does it need? The unit measures 950*620*970 mm and weighs 220 kg, so it can be placed at the head of a line without a large footprint.

A roll crusher's output size is decided by the gap between the two rollers, so the first step in setting the machine is to define the target. The gap is opened to move toward a coarser discharge and closed to move toward a finer one; both rollers then pull the feed through evenly and the material leaves at a consistent size. Because the right setting depends on the material's hardness and the feed size, the practical method is to start from the target particle size, set the gap accordingly, run a sample, and adjust until the discharge matches. Regular checks keep the setting stable as the rollers gradually wear.

Because it reduces brittle feed to a uniform fine size with little dust, the machine appears in several very different production settings. In a refractory or ceramic plant it prepares raw materials such as clays and oxides before batching; in a coal or power application it handles coal gangue and similar brittle feed; in building-material production it processes limestone and slag; in a chemical plant it breaks down intermediate solids; and in food and pharmaceutical preparation it reduces herbs, spices and similar ingredients where stainless-steel contact is required. In each case it does the same job - it takes material that arrives in larger pieces and turns it into a steady, controllable feed for the next stage.

Once you know the crusher can produce the right size, the next question is whether it can keep up. The TENCAN double-roll crusher handles up to about 300 kg/h at 52 r/min, which suits small-to-mid production and pilot lines rather than very high-tonnage plants. To match the machine to a line, check three things: the size of the feed going in (the rollers grip smaller, brittle pieces well), the throughput your downstream mill or screen needs, and whether the process runs continuously or in batches. Where the downstream stage is slower than the crusher, a small buffer or hopper between them smooths the flow and keeps both machines working efficiently.

The main wear parts on a roll crusher are the roller surfaces, followed by the seals and the internal dust board. Roller wear is gradual and shows up first as a drift in the discharge size, so watching the output is often a good early warning. Planning a modest stock of the key wear parts - and confirming the correct roller and seal specification - keeps a production line from waiting on a single component. Because the machine runs at low speed, wear is comparatively gentle, so a simple, regular inspection routine is usually all that is needed.

Fitting the crusher into a plant is straightforward because of its compact size: 950*620*970 mm and 220 kg let it sit at the head of a line without a large foundation. The machine is delivered in a plywood case with foam protection, and the delivery lead time is around 30 days. On arrival the usual steps are to place and level the unit, connect power, check the roll gap and seals, and run a test batch to confirm the discharge size. Where needed, installation, training and maintenance services can be arranged, so operators can be shown how to set the gap, run the machine and carry out routine checks.

Reading the specification sheet is easier once you know what each figure controls. Fineness (about 150 um) is the discharge size at the standard setting and moves with the roll gap. Capacity (300 kg/h) is the throughput the machine can maintain. Speed (52 r/min) is the roller rotation - a low, steady speed that breaks material by compression and keeps dust and fines low. Power (1.5 kW) is modest for the capacity, reflecting the compression principle. Size and weight (950*620*970 mm, 220 kg) tell you the footprint and handling needs, and the one-year warranty sets the service window. Together these figures describe a compact, controlled crusher rather than a high-tonnage primary breaker.