Granite is hard and highly abrasive. Liners and mantles in the crushing chamber work against hard rock all day, so the first question in equipment selection is whether the machine can take it. Hard rock is difficult to break and wears parts quickly — a granite line has to be both tough enough and costed carefully.
That is also why a 1,000 t/h layout that works on one project cannot simply be copied to the next. Granite crushing lines are always specified per quarry.
1. Four variables that decide the configuration
Site area decides whether the equipment can be laid out at all; budget decides the machine class; product spec decides the screening circuit; shape requirement decides what goes into secondary and tertiary duty. Change any one of the four and the configuration changes with it.
2. The four operating lines side by side
The table below lists four Shuangjin granite lines at 1,000 t/h, all in production, compiled from project records. Use it as a reference when specifying a line of the same size.
| Project | Secondary | Tertiary | Note |
|---|---|---|---|
| Zhangzhou, Fujian | SK.50.20 gyratory ×1 | SJ.1650 spring cone ×4 | Classic pairing, easy to run |
| Fuding, Fujian | SJ.1650 spring cone ×2 | SK.D.1500 multi-cylinder ×2 | Two parallel streams, switchable |
| Meizhou, Guangdong | SK.56.14 gyratory ×1 | SK.Y.1800 single-cylinder ×2 | Steady feed, heavy tertiary duty |
| Fangchenggang, Guangxi | SK.50.20 gyratory ×1 | SK.D.1500 multi-cylinder ×3 | Output past 1,000 t/h |
Table: secondary and tertiary configuration of four operating 1,000 t/h granite lines.
The difference between the four lines sits almost entirely in the secondary and tertiary stages. The machines differ, but the division of labour is the same: secondary takes what the jaw crusher discharges and breaks it down further; tertiary brings size and shape to spec.
Start with secondary. A gyratory crusher in secondary duty wins on steady feed and high capacity; the spring cone crusher is a classic, forgiving design. Shuangjin delivered its first self-developed spring cone in 2006, and the model earned its reputation among customers through years of continuous running. The Fuding line pairs a spring cone with multi-cylinder units on two parallel streams: when one stream is down for maintenance the other keeps running, and the product shape stays good.
Finally, the fine crushing stage. The SK.D multi-cylinder hydraulic cone crusher gives good shape at fine settings with few elongated flakes; the SK.Y single-cylinder hydraulic cone takes heavy loads. The Meizhou line runs an SK.56.14 gyratory in secondary and two SK.Y.1800 single-cylinder units in tertiary for exactly those two reasons. The Zhangzhou and Fangchenggang lines are wet processes: washing takes extra space and needs a water circuit, but the finished aggregate is clean and sells for more.
No configuration is better than another — only better matched. Zhangzhou runs a gyratory with spring cones, Fangchenggang a gyratory with multi-cylinder cones. Both combinations have been proven over years of production, provided site, budget and product spec line up as well.
3. Planning a new line: product, shape, then site and budget
If you are planning a new line, the order of decisions should not be reversed.
- First fix the product spec. How many fractions, and in what proportion — screening and the closed circuit follow from it.
- Then the shape requirement. Projects with tight limits on elongated and flaky particles need more capacity in shaping and fine crushing.
- Only then site and budget. Whether the plant fits, and which machine class you can afford, are constraints that come last.
With those three answers in hand, the equipment list for a granite line becomes worth discussing.
Common questions
Q: gyratory or cone crusher for secondary duty on granite?
A: A gyratory wins on steady feed and capacity — the SK.50.20 hydraulic gyratory crusher handles 1,000–2,000 t/h — while cones take the tertiary stage down to size. The choice follows site and product spec.
Q: can a spring cone crusher handle granite?
A: Yes. The spring cone is a classic, durable design; the Zhangzhou 1,000 t/h line in Fujian runs a gyratory with spring cones and has been running stably for years.
Q: where does a single-cylinder cone fit?
A: Single-cylinder cones take heavy duty. The Meizhou 1,000 t/h line in Guangdong runs an SK.56.14 gyratory in secondary and two SK.Y.1800 single-cylinder cones in tertiary.
If you are planning a new granite production line, call 400-006-1987, or leave a message on our contact page — and you are welcome to visit Shuangjin headquarters to see the equipment at work.