Vertical Compound Sand Making Machine

Updated: 2026-09-10

Overview

The Vertical Compound Sand Making Machine represents advanced crushing technology for artificial sand production in modern construction and mining operations. Unlike traditional horizontal shaft impact crushers, this equipment adopts a space-saving vertical structure that integrates multiple crushing principles into a single unit. It was developed to address the growing demand for high-quality manufactured sand in infrastructure projects where natural sand resources are scarce or environmentally restricted. Manufacturers typically design these machines with production capacities ranging from 30 to 300 tons per hour, making them suitable for both medium and large-scale sand plants. The machine's name derives from its unique working mechanism that combines impact crushing and grinding in two-stage crushing chambers, allowing for superior particle shape optimization compared to conventional sand makers.

Structure and Working Principle

The machine's core components include a vertically mounted main shaft, upper crushing chamber with impact plates, lower grinding chamber with concave liners, hydraulic opening system, and vibration damping base. Material enters through the top feed inlet and undergoes initial crushing in the upper chamber where high-speed rotating impellers fling stones against fixed impact blocks at velocities exceeding 60m/s. Partially crushed material then falls into the lower grinding chamber where a unique 'stone-on-stone' and 'stone-on-iron' combined action further refines particle shape. The adjustable gap between the rotating distributor plate and fixed liner allows precise control over final product gradation. Finished sand exits through discharge gates at the machine's base, with oversized particles automatically recirculated via an internal return system.

Key Features

Energy efficiency stands out as a primary advantage, with power consumption reduced by 30-50% compared to conventional sand makers due to optimized kinetic energy utilization. The dual-chamber design achieves exceptionally high sand-forming rates above 60%, significantly reducing unwanted stone powder content while producing cubical particles ideal for concrete mixing. Maintenance-friendly features include hydraulic-assisted upper cover opening for quick access to wear parts, with some models offering automatic lubrication systems. Advanced vibration sensors and temperature monitoring devices protect critical components. The machine's modular wear parts (impact blocks, distributor plates, liners) are designed for symmetrical use, allowing rotation during service to extend operational life by 40-60%.

Application Areas

This equipment dominates artificial sand production for high-grade construction projects requiring strict particle shape standards, particularly in concrete works where flaky or elongated grains would compromise structural integrity. Major applications include manufacturing machine-made sand for precast concrete components, ready-mix plants, and high-speed rail projects where sand quality directly affects engineering safety. The machine also proves valuable in comprehensive aggregate processing plants that produce both coarse aggregates and fine sand simultaneously. In mining operations, it processes tailings into usable construction materials, contributing to resource utilization and environmental protection. Some specialized models handle abrasive materials like quartzite and iron ore for industrial foundry sand production.

Maintenance and Precautions

Regular maintenance focuses on wear parts inspection, with impact blocks and liners typically requiring replacement after processing 30,000-50,000 tons of medium-hard material. Monthly checks should include main shaft runout measurement (tolerance <0.1mm) and belt tension adjustment. The hydraulic system demands clean oil (NAS 7 grade or better) with moisture content below 500ppm. Critical operation precautions include maintaining uniform feeding to prevent chamber overload and avoiding materials with metal contaminants that could damage internal components. During winter operation in cold regions, operators should preheat lubricating oil to ensure proper viscosity before startup. Noise levels exceeding 85dB may indicate component wear or misalignment requiring immediate inspection.

B2B Procurement Guide

When procuring Vertical Compound Sand Making Machines, buyers should evaluate capacity requirements based on projected sand demand—typically 1.2-1.5 times the desired finished product output to account for processing losses. Key selection criteria include the machine's maximum feed size (usually 50-60mm), sand modulus adjustability range (2.3-3.0 preferred), and whether it offers PLC control integration for automated production lines. Leading Chinese manufacturers often provide 12-18 month warranties covering main frame and major components, with wear parts typically excluded. Procurement contracts should specify delivery terms for heavy components (main shaft assembly may exceed 5 tons), onsite installation support, and availability of local service technicians. For reference, a 150t/h capacity machine with full hydraulic systems and dust removal accessories commonly costs $45,000-$65,000 FOB.