In mineral sampling and sample preparation for metallurgy, mining, ports, geological exploration, and third-party testing laboratories, coarse crushing directly determines downstream preparation efficiency, sample uniformity, and whether the entire automated sampling and sample preparation system can operate continuously and reliably. The SRC series single-roll crushers (SRC-H150 and SRC-H300), developed and manufactured by **Qingdao Hitec Electromechanical Technology Development Co., Ltd.**, are designed specifically for coarse crushing of hard, brittle materials such as sinter and coal gangue. They serve as key standalone coarse crushing units in mineral sample preparation systems and are widely used with automated sampling and sample preparation systems and fire assay laboratory sample preparation lines. Applications include third-party inspection organizations, government quality inspection agencies, port groups, and metallurgical and mining enterprises.
I. Operating Principle
Hitec’s SRC **single-roll crushers**consist of a rotating roll and a fixed jaw plate. The rotating roll crushes material by compression and shearing. Material enters the crushing chamber through the upper feed opening and is coarsely crushed by compression and splitting between the rotating roll and the fixed jaw plate. Material that meets the required particle size is discharged through the gap at the bottom. Unlike hammer or jaw crushers, this design is less prone to clogging when handling sticky or moist mineral materials and offers greater stability during continuous operation. It is particularly suitable for preparing samples of sinter and coal gangue, which tend to adhere to the chamber.
II. Key Model Specifications
We offer two standard models to cover low-to-medium and medium-to-high throughput sample preparation requirements:
– Throughput: 2–5 t/h
– Feed particle size: ≤50 mm
– Discharge particle size: ≤3 mm
– Motor power: 2.2 kW
– Machine weight: approx. 1.2 t
– Throughput: 3–10 t/h
– Feed particle size: ≤150 mm
– Discharge particle size: ≤13 mm
– Motor power: 7.5 kW
– Machine weight: approx. 2.6 t
✅ Energy-saving advantage: Both models use only 1/2 to 1/5 as much energy as comparable crushing equipment, reducing electricity costs for laboratories and online automated sample preparation stations during extended continuous operation.
Note: These specifications are for model selection only. Equipment specifications can be customized to project operating conditions and are subject to the final supply configuration.
III. Product Advantages
1. Anti-clogging design for sticky materials
The chamber is optimized for sinter and wet coal gangue. Compared with conventional crushing equipment, it significantly reduces the likelihood of material sticking or clogging and is suitable for extended, continuous online sample preparation.
2. Simple construction and easy maintenance
The modular machine features an inspection window for real-time viewing of crushing inside the chamber. Wear parts are easy to remove, install, and replace, reducing maintenance downtime.
3. Compatible with automated sampling and sample preparation systems
The crusher can be used as a standalone unit or integrated seamlessly with Hitec’s complete automated sampling and sample preparation systems and sample preparation solutions for fire assay laboratories. It can be combined with belt conveyors, sample splitters, and grinding equipment to build an intelligent, unattended sample preparation station.
4. Precision manufacturing to meet testing standards
The discharge particle size is consistent and controllable, with no risk of sample cross-contamination. The crusher meets Chinese national mineral sampling and sample preparation requirements and supports high-precision preparation in third-party inspection and government quality inspection laboratories. It is available for domestic and export supply, including for overseas mining and metallurgical testing projects.
IV. Applications
– Metallurgy: coarse crushing of sinter and iron ore pellets for sample preparation
– Mining / geological exploration: coarse crushing of ore and rock samples
– Port commodity inspection: online sampling and sample preparation of coal and mineral fines
– Third-party testing laboratories and government inspection organizations: coarse processing of coal gangue and mineral raw materials before sample preparation
– Standalone equipment for automated sampling and sample preparation projects
V. About Qingdao Hitec Electromechanical
Qingdao Hitec Electromechanical Technology Development Co., Ltd. specializes in the research, development, and manufacture of **standalone mineral sample preparation equipment, automated sampling and sample preparation systems, and complete fire assay laboratory solutions**, as well as dedicated analytical instruments. We integrate R&D, production, and sales, serving both domestic projects and export markets. Our services cover solution design, equipment manufacture, on-site installation and commissioning, and after-sales maintenance, helping testing laboratories across industries adopt intelligent, automated, and digital workflows.
If you are looking for stable, energy-efficient equipment for coarse crushing of sinter and coal gangue or need a single-roll crusher for an automated sampling and sample preparation system, contact Hitec Electromechanical for model selection advice, a quotation, and drawings.