In aggregate production lines, people often talk about Grade A and Grade B aggregates. What exactly are they? Today we’ll break it down once and for all, and also teach you how to boost the yield of Grade A aggregates to make more big money!
Let’s start with the differences between Grade A and Grade B aggregates! Grade A aggregates are the top-tier premium ones, the straight-A students of the bunch! They boast high strength and perfectly regular particle shapes – they’re the go-to for high-strength concrete and key construction projects, the backbone of all major builds. But let’s be realistic: you can’t get flawless particles from every load of raw stone after crushing. The offcuts and irregularly shaped particles generated during crushing become Grade B aggregates. They’re a notch lower in quality, but far from useless! For applications with lower quality requirements like ordinary concrete and road base bedding, they’re absolutely perfect, offering unbeatable cost performance.
Now for the key part! How do we crank up the yield of Grade A aggregates to make more money from this high-value product? Remember these two core tips!
First, choose the right crushing process! For high-hardness stones such as granite and basalt, you need the golden combination: jaw crusher + cone crusher + shaping machine. Do coarse crushing first, then medium and fine crushing, and finish with professional shaping – this ensures top-tier particle shape and strength both. For medium and soft stones like limestone, a jaw crusher paired with an impact crusher is more than enough. Impact crushers have a built-in shaping function, which is cost-saving and highly efficient!
Second, a closed-circuit circulation system is a must! Use a screening machine to sieve the crushed aggregates: qualified Grade A aggregates are sent straight for delivery, while unqualified particles are fed back to the shaping machine for re-crushing. With repeated screening and grinding, the yield of Grade A aggregates will naturally go up!
Sure, producing Grade A aggregates requires more equipment investment, a more complex process and a bit higher energy consumption. But what you get in return is higher product added value and stronger market competitiveness – it’s definitely a worthwhile deal in the long run!
Got any questions about Grade A and Grade B aggregates or the yield-boosting tips? Drop them in the comment section! We’ll keep talking about all things aggregate production lines in the next episode!
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