After processing, metallurgical slag can be converted into qualified manufactured sand, realizing the recycling and reuse of industrial solid waste. Crushing equipment is the core component of a slag sand-making production line. Due to the special characteristics of slag materials—such as varying hardness, moisture content, and impurity levels—improper equipment selection can easily lead to blockages, severe wear, and unqualified product particle sizes. To build a stable and highly efficient slag sand-making production line, it is essential to rationally configure the entire equipment set based on the condition of the raw slag, capacity requirements, and finished product standards.
To select a production line tailored to specific slag working conditions, it is recommended to directly connect with a reliable crushing equipment manufacturer. Shanghai Dongmeng possesses extensive experience in solid waste sand-making projects. For industrial waste residues like slag, we provide integrated services covering complete equipment selection, production line planning, and installation guidance, serving solid waste recycling projects across China.
1. Primary Crushing Equipment: Jaw Crusher
Large blocks of raw slag must first go through primary crushing. The jaw crusher handles the first crushing stage, capable of processing large-sized slag with strong load-bearing capacity, stable operation, and excellent impact resistance. It crushes large slag blocks into small and medium-sized materials, preparing the feed for subsequent secondary and tertiary crushing stages. For slag with a high content of iron impurities, iron removal devices can be equipped to reduce damage to downstream equipment caused by metallic impurities.2. Secondary and Tertiary Crushing Equipment: Impact Crusher / Cone Crusher
After primary crushing, the slag material enters the secondary and tertiary crushing stage. If the slag has moderate hardness, the impact crusher is preferred, as it combines crushing and shaping functions to produce well-shaped end products. For high-hardness slag materials, the cone crusher is more suitable; its interparticle crushing (laminated crushing) mode results in lower wear part consumption, making it ideal for long-term continuous production. These two models can be configured based on the actual physical properties of the slag.3. Sand-Making and Shaping Equipment: Vertical Shaft Impact (VSI) Crusher
To produce slag manufactured sand that meets construction sand standards, a VSI crusher is indispensable. This equipment further grinds and shapes the secondary/tertiary crushed slag, optimizes particle gradation, reduces the content of elongated and flaky particles, and produces uniformly sized finished sand. Additionally, the equipment features a built-in screening and recirculation function, returning unqualified materials back into the crushing chamber for reprocessing to ensure the quality of the finished sand.4. Auxiliary Supporting Equipment
A complete slag sand-making process also requires supporting equipment such as vibrating feeders, vibrating screens, belt conveyors, magnetic separators, and dust collection systems. The feeder ensures uniform material feeding, the vibrating screen completes size classification, the magnetic separator extracts metallic particles mixed in the slag, and the dust collection system meets environmental protection requirements. These integrated components ensure the continuous operation of the production line.5. Choosing Between Stationary and Mobile Production Lines
For projects with a fixed slag raw material site and high output, a stationary complete sand-making production line is preferred. For projects with scattered slag stockpiles and frequently changing sites, a mobile crushing and screening plant is an excellent choice. It integrates primary crushing, sand making, and screening into one unit, eliminating the need for extensive civil construction, allowing immediate on-site operation, and reducing material transportation costs.6. Advantages of Customized Solutions from Crushing Equipment Manufacturers
Due to the complex composition of slag, simply copying a standard aggregate production line configuration can easily lead to production failures. As a professional crushing equipment manufacturer, Shanghai Dongmeng provides customized solutions based on on-site user slag samples, site conditions, and capacity targets. We distinguish between stationary and mobile solutions and rationally configure host equipment such as jaw crushers, cone crushers, impact crushers, and VSI crushers. From solution design and equipment manufacturing to on-site debugging and subsequent spare parts supply, we provide comprehensive turnkey services to clients nationwide, helping to realize the resource value of solid waste slag.
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