Clinker
Clinker
Long Son is a provider of Clinker products to the Southern market with years of experience. To replicate that success, Long Son Co., Ltd will provide Clinker products with guaranteed quality meeting the needs of cement production as well as the needs of export to demanding markets where the company is implementing.
Clinker is a product burned and sintered at 1450°C of the limestone – clay and some coefficient control additives such as iron ore, bauxite, sand, …
The primary chemicals of blending include 04 major oxides such as CaO (limestone), and SiO2, Fe2O3, Al2O3 (clay), If lacking, it will be supplemented by the coefficient control additives above.
– When being burned to 1450°C, 04 major oxides in blending will react to each other and form 04 major mineral in clinker C3S (3CaO. SiO2); C2S(2Cao.SiO2); C3A (3CaO.Al2O3); C4AF (4CaO. Al2O3. Fe2O3)
These minerals have different crystal structures and this determines the nature of the clinker. The quality of clinker will determine the nature of the cement.
With the advantage of the high-quality materials, Long Son Co., Ltd believes that they will provide the best Clinker meeting the ASTM (America) standard to produce types of cement with perfect quality
Specification:
| Characteristic | Units | Ceriteria conform with ASTM C150 Type I | Typical Test Result | Test Method |
| 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 | |
| Remark: C3S to be calculated based on gross 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) | ||||