Clinker
Long Son is a supplier of clinker products for the southern market and export with many years of experience. Following in the footsteps of Long Son Cement Company, it will provide clinker products with guaranteed quality, meeting the needs of cement production as well as meeting the needs of exporting to demanding markets that the company is implementing.
Clinker is a product sintered at 1450 degrees Celsius of limestone – clay and some coefficient adjusting additives such as iron ore, bauxite, sand….
– The main chemical composition of the mixture includes 04 main oxides such as: CaO (from limestone), and SiO2, Fe2O3, Al2O3 (from clay). If lacking, they will be supplemented with the above adjustment additives.
– 04 main oxides in the mixture when heated to 1450 degrees Celsius will react with each other to form 4 main minerals in clinker C3S (3CaO. SiO2); C2S(2Cao.SiO2); C3A (3CaO.Al2O3); C4AF (4CaO. Al2O3. Fe2O3)
These minerals have different crystal structures and determine the properties of clinker. The quality of clinker will determine the properties of cement.
With the strength of having high quality raw material areas, Long Son believes that it will provide the best clinker that meets ASTM standards (USA) to produce perfect quality cement.
Specifications:
| Target name | Unit | ASTM C150 Type I | Result / Typical results | PP try |
| SiO2 | % | Max 22.5 | 21.86 | ASTM C114-09 |
| Al2O3 | % | Max 6.0 | 5.31 | |
| Fe2O3 | % | Max 4.5 | 3.43 | |
| CaO | % | Min 65.0 | 66.34 | |
| MgO | % | Max 4.00 | 0.72 | |
| SO3 | % | Max 1.0 | 0.30 | |
| Loss on Lgnition, (LOI) | % | Max 1.5 | 0.75 | |
| Free lime (F.CaO) | % | Max 1.5 | 1.0 | |
| Insoluble Residue | % | Max 0.75 | 0.42 | |
| Total alkalies (Na2O+0.658K2O) | % | Max 0.6 | 0.53 | |
| C3S | % | Min 55.0 | 63.18 | ASTM C150-11 |
| C2S | % | Max 21.5 | 15.18 | Calculated |
| C3A | % | Max 12.0 | 8.28 | |
| C4AF | % | Max 13.0 | 10.44 | |
| Lime Saturation Factor – LSF | % | Min 92 | 95.15 | |
| Moisture | % | Max 1.0 | 0.01 | Refer ASTM C136 |
| Particle Size: – Below 1mm | % | Max 10.0 | 7.82 | Sieve |
| – Above 30 mm | % | Max 10.0 | 6.50 | |
| Ghi chú: C3S must be calculated based on the CaO content. | ||||
| C3S = (4.071x %CaO) – (7.60x %SiO2) – (6.718 x Al2O3)- (1.43 x %Fe2O3)-(2.852xSO3) | ||||
| C2S = (2.867x% SiO2) – (0.7544x % C3S) | ||||
| C3A = (2.650x %Al2O3)-(1.692x Fe2O3); C4AF= 3.043 x % Fe2O3 | ||||
| LSF = (100 x % CaO) / (2.8 x %SiO2 + 1.18 x %Al2O3 + 0.65 x % Fe2O3) | ||||
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