DynaMix Power
What a stone crushing plant is made of: feeder, primary, secondary and tertiary crushing, screens and conveyors. Delivered capacities from 50 to 500 tph
The mistake that costs the most money in this business is buying a crusher and calling it a plant. A single jaw crusher reduces rock; it does not produce saleable aggregate, because the discharge still contains everything from fines to oversize. What makes aggregate is the combination: a primary stage that accepts the shot rock, a secondary or tertiary stage that closes the reduction, a screen that splits the stream into the fractions the market buys, and conveyors sized so none of those stages starves.
That is why two plants quoted at the same capacity can differ by a factor of two in price: one is a crusher on a frame, the other is a flowsheet with the screens, the stock conveyors and the steelwork that make the numbers real.
Every figure on the table below is a nominal capacity in tonnes per hour at the feed, for the material named against it. Nominal is not guaranteed: the same plant will run differently on dry granite and on wet limestone, and differently again when the feed is 100 % oversize rather than a graded run-of-quarry mix.
Three things move the number more than anything else in the specification. The first is the feed size distribution — a plant rated at 200 t/h on a mixed feed will not pass 200 t/h if every lump is at the crusher's maximum opening. The second is the closed-side setting: tightening the secondary to make a tighter product reduces throughput, always. The third is the moisture and clay content, which decides whether the screens separate at all.
So a capacity conversation should start with the feed, not with the tonnage. Send the rock type, the maximum lump, the required product fractions and the hours per day the plant must run, and the number that comes back is one that can be held.
A feeder meters the shot rock into the primary crusher at a rate the crusher can actually take; a vibrating grizzly under the feeder is what stops the plant choking on its own fines. The primary — jaw for hard abrasive rock, impact where the rock is softer and the shape matters — reduces to a size the second stage can accept.
The secondary closes the reduction. A cone crusher is the usual choice for abrasive rock because it wears by compression rather than by impact; an impact crusher is used where the product shape is the priority and the rock is not excessively abrasive. A third stage is added when the plant has to make a tight small-size fraction, or when a sand product is required and a vertical-shaft machine follows the cones.
The screens are where a plant is won or lost. Undersized screens starve the stock conveyors and recirculate load; oversized screens waste capital. Closed-circuit returns — the oversize going back to the crusher — are what let a plant hold a specification, and they are also what turns a nominal capacity into a real one.
Given the same machine list, two layouts can differ by a large share of the project cost, and the difference is nearly all steel and earthworks. A plant arranged in line needs long conveyors and a long site; a plant arranged in an L or a compact block needs more transfer points but a fraction of the screening structure.
Three constraints decide it before aesthetics get a vote: the site boundary and the haul-road access, the finished-product stockpile capacity the market requires, and the height allowed for the screening tower. A plant that has to fit a narrow bench will use more conveyors and fewer chutes; a plant with room will use gravity wherever it can.
We draw the layout against the surveyed site, not against a catalogue. That is also why the layout drawing is the document worth asking for first — it shows whether the supplier has understood the site or is selling a standard skid.
There is no useful single price for a stone crushing plant, and any supplier who quotes one before asking about the feed is quoting a machine, not a plant. What the quotation is actually built from:
A quotation that names only the crushers is a quotation for a crusher. Ask for the flowsheet, the steelwork list and the electrical scope in the same document.
The choice is not about size. It is about how the plant earns its money:
Every row is a plant we have built and delivered. The capacity is the nominal figure recorded for that project, the material is the rock it was specified for, and the link opens the project page. Reading down the column is the fastest way to see which capacity band your own tonnage falls into.
It depends on four things before any figure means anything: capacity, number of stages, rock abrasiveness and how much steelwork the site needs. A plant quoted at 100 t/h and one quoted at 300 t/h are not on the same scale, and a third stage or a closed circuit changes both. The honest answer is a range derived from your feed and your required fractions — which is why we ask for those before quoting.
Work backwards from what you sell, not forwards from what you can crush. Take the tonnes of each finished fraction the market takes per day, add the expected reject rate, divide by the hours the plant can run, and you have the throughput the plant must hold. Then add margin for the days when the feed is wet or the rock is harder than the sample.
Standard machines are quoted at 15–20 working days from order confirmation. A complete plant with custom steelwork and a site-specific layout takes longer, because the structure is drawn and fabricated after the layout is approved. We confirm both dates in the quotation rather than after the deposit.
Yes for the machines, and usually for the conveyors. The screening tower is the part that has to be designed for it — a tower welded for a permanent site is cheaper to build and expensive to ship. Tell us at the layout stage that the plant will travel, and the structure is bolted rather than welded.
Tel / WhatsApp: +86 18616330128 | E-mail: ensaichen@dynamixpower.com