clay shale, chalk, brick, slag, clinker, feldspar, coke etc. It applies to cement chemical industry, electric power, metallurgy, construction, refractory and other industrial department including limestone, slag, coke, steel slag etc.

Feed size:≤40-120mm
Productive capacity:20-400t/h

Application:Highway, railway, high-rise buildings, municipal, hydropower dam construction, concrete mixing station, sand and stone field, etc.

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Double Roller Sand Making Production Line

Professional Integrated Sand Processing System

Overview

As a professional integrated sand processing system, the multi-stage crushing double roller sand making line is engineered for high-hardness raw materials (Mohs hardness 6-8) and large-capacity sand production. It integrates full-process links including coarse crushing, medium crushing, fine crushing, sand making and gradation classification, which is well-suited for large-scale production scenarios such as medium and large-sized sand and gravel plants, commercial concrete mixing stations, and large-scale infrastructure projects. The production line stably outputs high-quality manufactured sand (meeting GB/T 14684 and international construction sand standards) and by-produces graded construction aggregates, achieving a balance of production efficiency, environmental protection compliance and product quality.

Core Equipment & Operation System

The production line adopts a professional core crushing unit composed of jaw crusher (coarse crushing), cone crusher/ impact crusher (medium crushing) and hydraulic double roller crusher (sand making). Equipped with professional supporting equipment such as vibrating feeder, multi-deck circular vibrating screen, closed belt conveyor and bag-type dust collector, it forms a closed-circuit circulation operation system. This system realizes one-stop processing from large-grain raw materials (max feeding size ≤500mm) to qualified manufactured sand, eliminating the need for additional intermediate crushing links, which significantly improves production efficiency and reduces labor and operational costs.

Raw Material Adaptability & Product Advantages

With strong raw material adaptability, the production line can efficiently process various high-hardness raw materials such as river pebbles, granite, basalt, limestone and quartzite. Through multi-stage gradient crushing, the particle size of materials is optimized step by step, and finally, the hydraulic double roller crusher performs precision sand making, resulting in manufactured sand with round cubic particle shape, uniform gradation and controllable powder content (≤5%). The product fully meets the high standards of construction sand for concrete preparation and dry-mix mortar production. Meanwhile, it can synchronously by-produce 10-20mm, 20-40mm graded construction aggregates, realizing “one line for multiple uses” and improving resource utilization efficiency.

Automation & Environmental Protection

The production line is equipped with a PLC automatic control system, which realizes centralized start-stop, precise adjustment of operating parameters (such as roller gap and feeding speed) of the entire set of equipment, and is equipped with fault alarm, remote monitoring and automatic protection functions. This system greatly reduces manual intervention and ensures continuous and stable production. Combined with closed conveying system and high-efficiency bag-type dust collector, it effectively controls dust emission (emission concentration ≤30mg/m³) and reduces operating noise (≤75dB), fully complying with national environmental protection emission standards and realizing green and low-carbon production.

Advantages & Applicable Scenarios

Strong adaptability and wear resistance: Equipped with high-manganese steel roller skin, it is suitable for long-term continuous large-scale production of medium and large-sized sand and gravel plants, effectively reducing equipment wear and operational costs.

High-standard sand quality: The manufactured sand is up to standard with uniform gradation, which can accurately meet the strict requirements of commercial concrete mixing stations for sand used in high-standard concrete preparation.

Continuous operation and multi-purpose: It features continuous operation and can by-produce graded aggregates, which can efficiently meet the large-volume sand and aggregate needs of large-scale infrastructure projects.

Technical parameter

Model	Roll Diameter (mm)	Roll Width (mm)	Feeding Size (mm)	Capacity (t/h)	Motor Power (kw)
2PGY750×500	φ750	500	≤40	20-30	2×(22-30)
2PGY800×600	φ800	600	≤40	30-40	2×(30-37)
2PGY800×800	φ800	800	≤40	40-50	2×(37-45)
2PGY1000×800	φ1000	800	≤40	50-80	2×(45-55)
2PGY1000×1000	φ1000	1000	≤60	80-100	2×(75-90)
2PGY1200×1000	φ1200	1000	≤80	100-120	2×(75-132)
2PGY1500×1200	φ1500	1200	≤120	150-200	2×(132-160)
2PGY1800×1000	φ1800	1000	≤100	250-300	2×(250-315)
2PGY2000×1200	φ2000	1200	≤120	300-400	2×(315-355)