EN
Amidst the wave of industrial upgrades in high-temperature sectors such as steel, cement, and power, high-performance monolithic refractories have become a core guarantee for the long-term operation of kilns. Greatsun Aopeng Group has launched the SHCAL series of pure calcium aluminate high-temperature binders. Leveraging its proprietary sintering process, comprehensive product matrix, and stable and controllable physicochemical properties, it breaks the monopoly of imported brands. With its highly stable performance and cost-effectiveness, it provides the industry with a high-performance, one-stop refractory bonding solution.
The product range covers four basic models: SHCAL-68, 71, 75, and 80, with a full range of alumina content from 50% to 80%, suitable for all casting systems from low-cement to high-purity corundum. The core product, SHCAL-71, contains no admixtures, with a precisely proportioned mineral phase of CA as the primary component and CA₂ as the secondary component, avoiding the harmful fast-setting phase C12A7. It balances rapid demolding with sustained high-temperature strength, and is compatible with all construction techniques including vibration, self-leveling, dry spraying, and coating, making it a leader in industry versatility.
Extremely high purity and low impurities are the core competitiveness of our products. The entire series strictly controls the content of SiO₂, Fe₂O₃, and alkali metal oxides. SHCAL-71's total impurity content is superior to imported competitors such as Almatis CA-270 and Kerneos SECAR-71. Extremely low ferrosilicon impurities significantly reduce the formation of high-temperature, low-melting-point substances, ensuring stable performance under high-temperature conditions above 1400℃ and strong reducing atmospheres of hydrogen and carbon monoxide. Refractoriness, slag erosion resistance, and thermal shock resistance are comprehensively improved, making it perfectly suited for harsh environments such as RH refining furnaces, iron troughs, ladle support bricks, and cement preheaters. Actual measurements show that the compressive strength of the silica-containing corundum castable after firing at 1500℃ reaches 156MPa, far exceeding the high-temperature mechanical performance of similar products.
Strict control over the entire production chain ensures consistent batch quality. Raw materials include first-grade industrial alumina and self-processed high-purity limestone. Automated batching and homogenization, fully automated temperature-controlled rotary kiln sintering, and online XRD real-time monitoring of mineral phases are all employed. Ceramic-lined ball milling eliminates secondary contamination. Finished products undergo testing with a full set of imported equipment, including Shimadzu XRF and scanning electron microscopy, with samples retained for three months after each shift. Long-term monitoring data shows that SHCAL-71 maintains a stable specific surface area within the optimal range of 4200~4700 cm²/g, with minimal fluctuations in flow value, setting time, and 1-day strength across different batches, completely resolving common industry pain points such as unstable cement performance and difficulty in formula adjustment. Comparison tests with imported products show that, at the same additive dosage, SHCAL series castables exhibit 15%~40% higher 1-day room temperature strength, better flow retention, and a moderately controllable setting time, eliminating the need for frequent admixture adjustments.
Leveraging large-scale independent production and end-to-end cost control, our pure calcium aluminate cement boasts the best cost-performance ratio in the industry. Under the same physicochemical properties and high-temperature performance, procurement costs are significantly reduced. Simultaneously, the product is compatible with various additives, reducing the need for admixtures in the formula. Combined with its rapid-hardening and early-strength characteristics, it shortens the curing cycle and increases precast component production capacity. From raw material procurement and formula adjustment to production and construction, we reduce overall production costs for enterprises, with tangible cost reduction effects.
With strong construction adaptability, it significantly reduces costs and increases efficiency. The product exhibits excellent rheological properties, achieving high fluidity with low water addition; dry-spray coatings show low rebound rate and are less prone to sagging and collapse. It demonstrates outstanding compatibility with various water-reducing agents and retarders, reducing the amount of admixtures required. Its rapid hardening and early strength characteristics shorten the curing cycle, and the quick demolding of precast components improves production line turnover efficiency. Mature application data is available for everything from 2% ultra-low RH castables to 5% conventional iron trough mixes, supported by a complete set of formulation experiments. Customized adaptation solutions can be developed based on the customer's aggregate system.
Unlike single-product suppliers, Greatsun Aopeng Group adheres to an integrated positioning of "product + technical service," creating a one-stop solution for refractory materials. The company follows the ISO 9001 production system and is equipped with a professional R&D laboratory, capable of conducting castable mix proportion tests based on customer's on-site conditions, and providing suitable formulas and construction guidance. Compared to imported products, the SHCAL series has a shorter delivery cycle, lower procurement costs, and significantly lower overall operating costs for equivalent performance, making it the preferred domestic alternative for metallurgical, building materials, and power companies.
From ordinary heating furnaces to high-end refining equipment, from vibration casting to dry spraying, Greatsun Aopeng Group's SHCAL pure calcium aluminate cement, with its four core advantages of high purity, stability, versatility, and ultra-high cost performance, empowers high-temperature industrial refractory materials to achieve long-term durability and helps industries upgrade in a green, efficient, and low-cost manner.
