The CTC-1275 tertiary impact crusher handles the final crushing stage in an aggregate line, where shaping and fines generation are the goal. The information below covers feed materials, output products, applications, wear-part service and comparisons with alternative final-stage crushers.
What Materials Can the CTC-1275 Process?
The CTC-1275 is built for medium-hard, non-abrasive stone already reduced by a secondary crusher. Typical feed includes:
- Limestone, dolomite and similar sedimentary rock
- Secondary-crushed natural stone and gravel
- Pre-crushed material requiring final shaping and fines
Maximum feed size is 100 mm. The machine is not intended for highly abrasive rock; abrasive feed sharply increases blow-bar wear, and for hard, abrasive stone a vertical shaft impactor is the better final-stage choice.
What Products Does It Make?
The CTC-1275 produces a cubical, well-graded product down to around 0.5 mm with roughly 60 percent passing in a single pass. This covers fine concrete-grade aggregate and the fine fraction used as manufactured-sand feed. The high crush count gives a strongly cubical grain shape, which improves concrete strength and workability and helps mixes meet shape specifications.
Which Industries and Applications Use It?
- Concrete aggregate production where cubical shape is specified
- Manufactured-sand and fine-aggregate generation
- Asphalt aggregate requiring tight shape control
- Closed-circuit finishing of secondary-crushed stone
How Are Wear Parts Replaced and How Long Do They Last?
The main wear parts are the blow bars on the rotor and the breaker plate liners, which are interchangeable. Tertiary duty runs at high rotor speed and generates fines, so wear is steady and depends on feed hardness and tonnage. The hydraulic opening mechanism exposes the rotor and liners for replacement without dismantling, keeping downtime low.
How Does a Tertiary Impact Crusher Compare with a Vsi?
Both are final-stage shaping machines. A tertiary impact crusher uses a horizontal rotor with blow bars and breaker plates and gives strong reduction with cubical shaping; it is well suited to non-abrasive stone. A vertical shaft impactor (VSI) accelerates material against anvils or a rock bed and excels at manufactured sand from harder, more abrasive rock with lower wear when run rock-on-rock. The CTC-1275 is the economical choice for non-abrasive feed where a cubical product and fines are the goal, and it can be run in series with a VSI when both cubical aggregate and a high sand yield are required.
How Does It Compare with a Cone Crusher in the Final Stage?
A cone crusher works by compression and handles harder, more abrasive rock, but it produces a higher proportion of flaky particles and a lower fines yield than the CTC-1275. For non-abrasive stone where cubical shape and fines are the priority, the tertiary impact crusher gives a better-shaped product in a single pass, and at lower purchase price and simpler maintenance.
How Does the CTC-1275 Relate to the Larger CTC Models?
The CTC-1275 is the compact unit, with a 1,100 x 750 mm rotor, 100 mm feed and 60-80 t/h. The CTC-1210 (120 mm feed, 80-135 t/h), CTC-1212 (150 mm feed, 120-170 t/h) and CTC-1215 (150 mm feed, 230-250 t/h) use larger rotors for higher capacity, all sharing the same 800-900 rpm rotor speed, selective crushing and hydraulic adjustment. Selection follows the required tonnage and the feed size delivered by the secondary stage.
