Lifting equipment rental

Collaboration Cases

VSI shaping sand-making machine employing European technology

Release date:

2022-02-28

0.075–40 mm raw materials are conveyed to the raw material silo, which features a reinforced‑concrete structure. A variable‑frequency metering belt is installed at the bottom of the silo to ensure uniform feeding to the production line and to display hourly output. The discharge hopper is equipped with a vibratory anti‑bridging device to maintain smooth material flow. The raw materials are then transported via conveyor to the shaping machine for crushing and reshaping, after which they are lifted to the top of the main crushing building.

VSI shaping sand-making machine employing European technology
VSI shaping sand-making machine employing European technology

Raw materials ranging from 0.075 to 40 mm are conveyed to the raw material storage bin, which features a reinforced‑concrete structure. A variable‑frequency metering belt is installed at the bottom of the bin to ensure uniform feeding to the production line and to display hourly output. The discharge hopper is equipped with a vibrating anti‑clogging mechanism to maintain smooth material flow. The raw materials are transported via conveyor to a shaping machine for crushing and reshaping, then lifted to the top of the main crushing building. From there, they are fed—either by a top‑mounted belt or a vibrating feeder—into a screening unit that also provides preliminary powder separation and dust collection. After screening, the aggregates are separated into five size fractions (if oversized particles are present): one fraction of 0–5 mm sand, and three additional fractions—typically 5–10 mm, 10–20 mm, and 20–30 mm—which can be customized according to customer requirements by adjusting the screen configuration to meet specified particle‑size specifications. Each fraction is conveyed by its own belt to the designated stockpile area; sand, after being moistened in a humidifier, is stored on site (or, when used for mortar production, may be delivered directly to the sand storage tank without prior moistening). Oversized particles are returned to the shaping machine for further crushing and reshaping, entering an endless recycling loop. The plant is fitted with multi‑point powder‑separation and dust‑collection systems, as well as a passive eddy‑current powder separator (patented technology). Under the suction of an induced draft fan, all dust is routed through a recovery channel, where coarse particles are also intercepted. Stone dust, before entering the dust collector, passes through a recovery filter that captures fine sand, thereby increasing the yield of fine sand and enhancing the purity and value of stone dust (200 mesh and finer). In the finished product stream, sand particles sized 0–4.75 mm are uniformly mixed in a humidifier to prevent segregation, then conveyed via a discharge belt to the finished‑product storage bin. At the head of the conveyor belt handling the shaped aggregates, an optional spray device can be installed to suppress dust and minimize segregation during discharge.

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