Zhongqinglin Heavy Industry Dry Process Sand Making Plant: Precise Control for High-Quality Manufactured Sand
As the construction industry moves towards greenization and precision, traditional wet process sand making technology is gradually being replaced by advanced dry process sand making technology due to its drawbacks such as high water consumption, heavy pollution and unstable finished product quality. With its leading dry process sand making plant system, Zhongqinglin Heavy Industry has set a benchmark in this field and provided high-quality, high-standard manufactured sand solutions for the market.
Nov 08,2025
As the construction industry moves towards greenization and precision, traditional wet process sand making technology is gradually being replaced by advanced dry process sand making technology due to its drawbacks such as high water consumption, heavy pollution and unstable finished product quality. With its leading dry process sand making plant system, Zhongqinglin Heavy Industry has set a benchmark in this field and provided high-quality, high-standard manufactured sand solutions for the market.
The core sand making equipment of Zhongqinglin Heavy Industry's dry process sand making plant is the vertical shaft centrifugal impact crusher. This equipment adopts two efficient crushing principles: "stone-on-stone" or "stone-on-iron". "Stone-on-stone" is suitable for shaping aggregates with excellent particle shape, and the finished products are mostly cubic with reasonable gradation. While "stone-on-iron" can increase the powder yield, it causes greater wear on vulnerable parts and increases sand making costs. Enterprises can flexibly choose the optimal crushing mode according to the use of the final finished products and economic benefits.
The key challenge of dry process sand making lies in the precise control of stone powder content. There are different international standards for the definition of stone powder: Europe and Japan use 0.065mm as the threshold, while China, the United States and others adopt 0.075mm. Concrete of different strengths has extremely strict requirements for stone powder content, ranging from 3%, 5%, 7% for C30 and above to 10-15% for C30 and below. Especially in the field of dry-mixed mortar, ordinary mortar requires stone powder content below 15%, while special mortar needs to be controlled within 3%, which can be described as "the less the better".
To this end, Zhongqinglin Heavy Industry has equipped its sand making plant with an efficient powder selection system, which has become its core technical advantage. This system can accurately separate the stone powder generated after crushing. If unpowered powder selection technology is adopted, the stone powder content can be stably controlled at around 4.1%. If more precise mechanical powder selection is used, the stone powder content can be as low as 3%, fully meeting the strict requirements for low powder content in high-grade concrete and special mortar.
Through the perfect combination of its efficient vertical shaft impact crusher and intelligent powder selection system, Zhongqinglin Heavy Industry's dry process sand making plant achieves precise control over the particle shape and stone powder content of manufactured sand. It not only effectively improves the quality of sand and gravel aggregates and reduces production costs, but also conforms to the green and environmental protection industrial trend. It is an ideal choice for commercial concrete stations and dry-mixed mortar production enterprises to create high-end and high-value-added products.
